Hi Joe

On Wed, Dec 23, 2020 at 12:30 PM Joe Perches <j...@perches.com> wrote:
>
> Perhaps this on top.
>
> trace isn't a good name as it's not a trace mechanism, it is a
> typical debug mechanism.
>
> Rename uvc_trace/uvc_trace_cont macros to uvc_dbg/uvc_dbg_cont.
> Rename uvc_trace_param to uvc_dbg_param
> Rename UVC_TRACE_<FOO> defines to UVC_DBG_<FOO>
> Use ## concatenation in uvc_dbg macros to avoid overly long and
> repetitive UVC_DBG uses
> ---
I have added your patch to

https://patchwork.linuxtv.org/project/linux-media/patch/20201223133528.55014-12-riba...@chromium.org/

Hope you don't mind.

Cheers!

>  drivers/media/usb/uvc/uvc_ctrl.c   |  81 +++++----
>  drivers/media/usb/uvc/uvc_driver.c | 343 
> ++++++++++++++++++-------------------
>  drivers/media/usb/uvc/uvc_isight.c |  17 +-
>  drivers/media/usb/uvc/uvc_queue.c  |   4 +-
>  drivers/media/usb/uvc/uvc_status.c |  29 ++--
>  drivers/media/usb/uvc/uvc_v4l2.c   |  55 +++---
>  drivers/media/usb/uvc/uvc_video.c  | 120 +++++++------
>  drivers/media/usb/uvc/uvcvideo.h   |  34 ++--
>  8 files changed, 331 insertions(+), 352 deletions(-)
>
> diff --git a/drivers/media/usb/uvc/uvc_ctrl.c 
> b/drivers/media/usb/uvc/uvc_ctrl.c
> index bf448c213c53..7b70877b2483 100644
> --- a/drivers/media/usb/uvc/uvc_ctrl.c
> +++ b/drivers/media/usb/uvc/uvc_ctrl.c
> @@ -906,8 +906,8 @@ static struct uvc_control *uvc_find_control(struct 
> uvc_video_chain *chain,
>         }
>
>         if (ctrl == NULL && !next)
> -               uvc_trace(chain->dev, UVC_TRACE_CONTROL,
> -                         "Control 0x%08x not found.\n", v4l2_id);
> +               uvc_dbg(chain->dev, CONTROL, "Control 0x%08x not found\n",
> +                       v4l2_id);
>
>         return ctrl;
>  }
> @@ -1820,9 +1820,9 @@ static int uvc_ctrl_fill_xu_info(struct uvc_device *dev,
>         ret = uvc_query_ctrl(dev, UVC_GET_LEN, ctrl->entity->id, dev->intfnum,
>                              info->selector, data, 2);
>         if (ret < 0) {
> -               uvc_trace(dev, UVC_TRACE_CONTROL,
> -                         "GET_LEN failed on control %pUl/%u (%d).\n",
> -                         info->entity, info->selector, ret);
> +               uvc_dbg(dev, CONTROL,
> +                       "GET_LEN failed on control %pUl/%u (%d)\n",
> +                       info->entity, info->selector, ret);
>                 goto done;
>         }
>
> @@ -1833,20 +1833,20 @@ static int uvc_ctrl_fill_xu_info(struct uvc_device 
> *dev,
>
>         ret = uvc_ctrl_get_flags(dev, ctrl, info);
>         if (ret < 0) {
> -               uvc_trace(dev, UVC_TRACE_CONTROL,
> -                         "Failed to get flags for control %pUl/%u (%d).\n",
> -                         info->entity, info->selector, ret);
> +               uvc_dbg(dev, CONTROL,
> +                       "Failed to get flags for control %pUl/%u (%d)\n",
> +                       info->entity, info->selector, ret);
>                 goto done;
>         }
>
>         uvc_ctrl_fixup_xu_info(dev, ctrl, info);
>
> -       uvc_trace(dev, UVC_TRACE_CONTROL,
> -                 "XU control %pUl/%u queried: len %u, flags { get %u set %u 
> auto %u }.\n",
> -                 info->entity, info->selector, info->size,
> -                 (info->flags & UVC_CTRL_FLAG_GET_CUR) ? 1 : 0,
> -                 (info->flags & UVC_CTRL_FLAG_SET_CUR) ? 1 : 0,
> -                 (info->flags & UVC_CTRL_FLAG_AUTO_UPDATE) ? 1 : 0);
> +       uvc_dbg(dev, CONTROL,
> +               "XU control %pUl/%u queried: len %u, flags { get %u set %u 
> auto %u }\n",
> +               info->entity, info->selector, info->size,
> +               (info->flags & UVC_CTRL_FLAG_GET_CUR) ? 1 : 0,
> +               (info->flags & UVC_CTRL_FLAG_SET_CUR) ? 1 : 0,
> +               (info->flags & UVC_CTRL_FLAG_AUTO_UPDATE) ? 1 : 0);
>
>  done:
>         kfree(data);
> @@ -1871,10 +1871,10 @@ static int uvc_ctrl_init_xu_ctrl(struct uvc_device 
> *dev,
>
>         ret = uvc_ctrl_add_info(dev, ctrl, &info);
>         if (ret < 0)
> -               uvc_trace(dev, UVC_TRACE_CONTROL,
> -                         "Failed to initialize control %pUl/%u on device %s 
> entity %u\n",
> -                         info.entity, info.selector, dev->udev->devpath,
> -                         ctrl->entity->id);
> +               uvc_dbg(dev, CONTROL,
> +                       "Failed to initialize control %pUl/%u on device %s 
> entity %u\n",
> +                       info.entity, info.selector, dev->udev->devpath,
> +                       ctrl->entity->id);
>
>         return ret;
>  }
> @@ -1902,8 +1902,8 @@ int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
>         }
>
>         if (!found) {
> -               uvc_trace(chain->dev, UVC_TRACE_CONTROL,
> -                         "Extension unit %u not found.\n", xqry->unit);
> +               uvc_dbg(chain->dev, CONTROL, "Extension unit %u not found\n",
> +                       xqry->unit);
>                 return -ENOENT;
>         }
>
> @@ -1918,9 +1918,8 @@ int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
>         }
>
>         if (!found) {
> -               uvc_trace(chain->dev, UVC_TRACE_CONTROL,
> -                         "Control %pUl/%u not found.\n", entity->guid,
> -                         xqry->selector);
> +               uvc_dbg(chain->dev, CONTROL, "Control %pUl/%u not found\n",
> +                       entity->guid, xqry->selector);
>                 return -ENOENT;
>         }
>
> @@ -2068,10 +2067,9 @@ static int uvc_ctrl_add_info(struct uvc_device *dev, 
> struct uvc_control *ctrl,
>
>         ctrl->initialized = 1;
>
> -       uvc_trace(dev, UVC_TRACE_CONTROL,
> -                 "Added control %pUl/%u to device %s entity %u\n",
> -                 ctrl->info.entity, ctrl->info.selector, dev->udev->devpath,
> -                 ctrl->entity->id);
> +       uvc_dbg(dev, CONTROL, "Added control %pUl/%u to device %s entity 
> %u\n",
> +               ctrl->info.entity, ctrl->info.selector, dev->udev->devpath,
> +               ctrl->entity->id);
>
>         return 0;
>  }
> @@ -2108,9 +2106,8 @@ static int __uvc_ctrl_add_mapping(struct uvc_device 
> *dev,
>                 map->set = uvc_set_le_value;
>
>         list_add_tail(&map->list, &ctrl->info.mappings);
> -       uvc_trace(dev, UVC_TRACE_CONTROL,
> -                 "Adding mapping '%s' to control %pUl/%u.\n",
> -                 map->name, ctrl->info.entity, ctrl->info.selector);
> +       uvc_dbg(dev, CONTROL, "Adding mapping '%s' to control %pUl/%u\n",
> +               map->name, ctrl->info.entity, ctrl->info.selector);
>
>         return 0;
>  }
> @@ -2126,9 +2123,9 @@ int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
>         int ret;
>
>         if (mapping->id & ~V4L2_CTRL_ID_MASK) {
> -               uvc_trace(dev, UVC_TRACE_CONTROL,
> -                         "Can't add mapping '%s', control id 0x%08x is 
> invalid.\n",
> -                         mapping->name, mapping->id);
> +               uvc_dbg(dev, CONTROL,
> +                       "Can't add mapping '%s', control id 0x%08x is 
> invalid\n",
> +                       mapping->name, mapping->id);
>                 return -EINVAL;
>         }
>
> @@ -2173,9 +2170,9 @@ int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
>
>         list_for_each_entry(map, &ctrl->info.mappings, list) {
>                 if (mapping->id == map->id) {
> -                       uvc_trace(dev, UVC_TRACE_CONTROL,
> -                                 "Can't add mapping '%s', control id 0x%08x 
> already exists.\n",
> -                                 mapping->name, mapping->id);
> +                       uvc_dbg(dev, CONTROL,
> +                               "Can't add mapping '%s', control id 0x%08x 
> already exists\n",
> +                               mapping->name, mapping->id);
>                         ret = -EEXIST;
>                         goto done;
>                 }
> @@ -2184,9 +2181,9 @@ int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
>         /* Prevent excess memory consumption */
>         if (atomic_inc_return(&dev->nmappings) > UVC_MAX_CONTROL_MAPPINGS) {
>                 atomic_dec(&dev->nmappings);
> -               uvc_trace(dev, UVC_TRACE_CONTROL,
> -                         "Can't add mapping '%s', maximum mappings count 
> (%u) exceeded.\n",
> -                         mapping->name, UVC_MAX_CONTROL_MAPPINGS);
> +               uvc_dbg(dev, CONTROL,
> +                       "Can't add mapping '%s', maximum mappings count (%u) 
> exceeded\n",
> +                       mapping->name, UVC_MAX_CONTROL_MAPPINGS);
>                 ret = -ENOMEM;
>                 goto done;
>         }
> @@ -2255,9 +2252,9 @@ static void uvc_ctrl_prune_entity(struct uvc_device 
> *dev,
>                     !uvc_test_bit(controls, blacklist[i].index))
>                         continue;
>
> -               uvc_trace(dev, UVC_TRACE_CONTROL,
> -                         "%u/%u control is black listed, removing it.\n",
> -                         entity->id, blacklist[i].index);
> +               uvc_dbg(dev, CONTROL,
> +                       "%u/%u control is black listed, removing it\n",
> +                       entity->id, blacklist[i].index);
>
>                 uvc_clear_bit(controls, blacklist[i].index);
>         }
> diff --git a/drivers/media/usb/uvc/uvc_driver.c 
> b/drivers/media/usb/uvc/uvc_driver.c
> index 1f72bda6036e..2dbed5c3831a 100644
> --- a/drivers/media/usb/uvc/uvc_driver.c
> +++ b/drivers/media/usb/uvc/uvc_driver.c
> @@ -33,7 +33,7 @@ unsigned int uvc_clock_param = CLOCK_MONOTONIC;
>  unsigned int uvc_hw_timestamps_param;
>  unsigned int uvc_no_drop_param;
>  static unsigned int uvc_quirks_param = -1;
> -unsigned int uvc_trace_param;
> +unsigned int uvc_dbg_param;
>  unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT;
>
>  /* ------------------------------------------------------------------------
> @@ -521,10 +521,10 @@ static int uvc_parse_format(struct uvc_device *dev,
>         case UVC_VS_FORMAT_FRAME_BASED:
>                 n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28;
>                 if (buflen < n) {
> -                       uvc_trace(dev, UVC_TRACE_DESCR,
> -                                 "device %d videostreaming interface %d 
> FORMAT error\n",
> -                                 dev->udev->devnum,
> -                                 alts->desc.bInterfaceNumber);
> +                       uvc_dbg(dev, DESCR,
> +                               "device %d videostreaming interface %d FORMAT 
> error\n",
> +                               dev->udev->devnum,
> +                               alts->desc.bInterfaceNumber);
>                         return -EINVAL;
>                 }
>
> @@ -585,10 +585,10 @@ static int uvc_parse_format(struct uvc_device *dev,
>
>         case UVC_VS_FORMAT_MJPEG:
>                 if (buflen < 11) {
> -                       uvc_trace(dev, UVC_TRACE_DESCR,
> -                                 "device %d videostreaming interface %d 
> FORMAT error\n",
> -                                 dev->udev->devnum,
> -                                 alts->desc.bInterfaceNumber);
> +                       uvc_dbg(dev, DESCR,
> +                               "device %d videostreaming interface %d FORMAT 
> error\n",
> +                               dev->udev->devnum,
> +                               alts->desc.bInterfaceNumber);
>                         return -EINVAL;
>                 }
>
> @@ -601,10 +601,10 @@ static int uvc_parse_format(struct uvc_device *dev,
>
>         case UVC_VS_FORMAT_DV:
>                 if (buflen < 9) {
> -                       uvc_trace(dev, UVC_TRACE_DESCR,
> -                                 "device %d videostreaming interface %d 
> FORMAT error\n",
> -                                 dev->udev->devnum,
> -                                 alts->desc.bInterfaceNumber);
> +                       uvc_dbg(dev, DESCR,
> +                               "device %d videostreaming interface %d FORMAT 
> error\n",
> +                               dev->udev->devnum,
> +                               alts->desc.bInterfaceNumber);
>                         return -EINVAL;
>                 }
>
> @@ -619,10 +619,10 @@ static int uvc_parse_format(struct uvc_device *dev,
>                         strscpy(format->name, "HD-DV", sizeof(format->name));
>                         break;
>                 default:
> -                       uvc_trace(dev, UVC_TRACE_DESCR,
> -                                 "device %d videostreaming interface %d: 
> unknown DV format %u\n",
> -                                 dev->udev->devnum,
> -                              alts->desc.bInterfaceNumber, buffer[8]);
> +                       uvc_dbg(dev, DESCR,
> +                               "device %d videostreaming interface %d: 
> unknown DV format %u\n",
> +                               dev->udev->devnum,
> +                               alts->desc.bInterfaceNumber, buffer[8]);
>                         return -EINVAL;
>                 }
>
> @@ -648,14 +648,14 @@ static int uvc_parse_format(struct uvc_device *dev,
>         case UVC_VS_FORMAT_STREAM_BASED:
>                 /* Not supported yet. */
>         default:
> -               uvc_trace(dev, UVC_TRACE_DESCR,
> -                         "device %d videostreaming interface %d unsupported 
> format %u\n",
> -                         dev->udev->devnum, alts->desc.bInterfaceNumber,
> -                         buffer[2]);
> +               uvc_dbg(dev, DESCR,
> +                       "device %d videostreaming interface %d unsupported 
> format %u\n",
> +                       dev->udev->devnum, alts->desc.bInterfaceNumber,
> +                       buffer[2]);
>                 return -EINVAL;
>         }
>
> -       uvc_trace(dev, UVC_TRACE_DESCR, "Found format %s.\n", format->name);
> +       uvc_dbg(dev, DESCR, "Found format %s\n", format->name);
>
>         buflen -= buffer[0];
>         buffer += buffer[0];
> @@ -674,10 +674,10 @@ static int uvc_parse_format(struct uvc_device *dev,
>                 n = n ? n : 3;
>
>                 if (buflen < 26 + 4*n) {
> -                       uvc_trace(dev, UVC_TRACE_DESCR,
> -                                 "device %d videostreaming interface %d 
> FRAME error\n",
> -                                 dev->udev->devnum,
> -                                 alts->desc.bInterfaceNumber);
> +                       uvc_dbg(dev, DESCR,
> +                               "device %d videostreaming interface %d FRAME 
> error\n",
> +                               dev->udev->devnum,
> +                               alts->desc.bInterfaceNumber);
>                         return -EINVAL;
>                 }
>
> @@ -739,10 +739,10 @@ static int uvc_parse_format(struct uvc_device *dev,
>                                 frame->dwDefaultFrameInterval;
>                 }
>
> -               uvc_trace(dev, UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n",
> -                         frame->wWidth, frame->wHeight,
> -                         10000000 / frame->dwDefaultFrameInterval,
> -                         (100000000 / frame->dwDefaultFrameInterval) % 10);
> +               uvc_dbg(dev, DESCR, "- %ux%u (%u.%u fps)\n",
> +                       frame->wWidth, frame->wHeight,
> +                       10000000 / frame->dwDefaultFrameInterval,
> +                       (100000000 / frame->dwDefaultFrameInterval) % 10);
>
>                 format->nframes++;
>                 buflen -= buffer[0];
> @@ -758,10 +758,10 @@ static int uvc_parse_format(struct uvc_device *dev,
>         if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
>             buffer[2] == UVC_VS_COLORFORMAT) {
>                 if (buflen < 6) {
> -                       uvc_trace(dev, UVC_TRACE_DESCR,
> -                                 "device %d videostreaming interface %d 
> COLORFORMAT error\n",
> -                                 dev->udev->devnum,
> -                                 alts->desc.bInterfaceNumber);
> +                       uvc_dbg(dev, DESCR,
> +                               "device %d videostreaming interface %d 
> COLORFORMAT error\n",
> +                               dev->udev->devnum,
> +                               alts->desc.bInterfaceNumber);
>                         return -EINVAL;
>                 }
>
> @@ -793,18 +793,18 @@ static int uvc_parse_streaming(struct uvc_device *dev,
>
>         if (intf->cur_altsetting->desc.bInterfaceSubClass
>                 != UVC_SC_VIDEOSTREAMING) {
> -               uvc_trace(dev, UVC_TRACE_DESCR,
> -                         "device %d interface %d isn't a video streaming 
> interface\n",
> -                         dev->udev->devnum,
> -                         intf->altsetting[0].desc.bInterfaceNumber);
> +               uvc_dbg(dev, DESCR,
> +                       "device %d interface %d isn't a video streaming 
> interface\n",
> +                       dev->udev->devnum,
> +                       intf->altsetting[0].desc.bInterfaceNumber);
>                 return -EINVAL;
>         }
>
>         if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) {
> -               uvc_trace(dev, UVC_TRACE_DESCR,
> -                         "device %d interface %d is already claimed\n",
> -                         dev->udev->devnum,
> -                         intf->altsetting[0].desc.bInterfaceNumber);
> +               uvc_dbg(dev, DESCR,
> +                       "device %d interface %d is already claimed\n",
> +                       dev->udev->devnum,
> +                       intf->altsetting[0].desc.bInterfaceNumber);
>                 return -EINVAL;
>         }
>
> @@ -826,9 +826,9 @@ static int uvc_parse_streaming(struct uvc_device *dev,
>
>                         if (ep->extralen > 2 &&
>                             ep->extra[1] == USB_DT_CS_INTERFACE) {
> -                               uvc_trace(dev, UVC_TRACE_DESCR,
> -                                         "trying extra data from endpoint 
> %u.\n",
> -                                         i);
> +                               uvc_dbg(dev, DESCR,
> +                                       "trying extra data from endpoint 
> %u\n",
> +                                       i);
>                                 buffer = alts->endpoint[i].extra;
>                                 buflen = alts->endpoint[i].extralen;
>                                 break;
> @@ -843,8 +843,8 @@ static int uvc_parse_streaming(struct uvc_device *dev,
>         }
>
>         if (buflen <= 2) {
> -               uvc_trace(dev, UVC_TRACE_DESCR,
> -                         "no class-specific streaming interface descriptors 
> found.\n");
> +               uvc_dbg(dev, DESCR,
> +                       "no class-specific streaming interface descriptors 
> found\n");
>                 goto error;
>         }
>
> @@ -861,9 +861,9 @@ static int uvc_parse_streaming(struct uvc_device *dev,
>                 break;
>
>         default:
> -               uvc_trace(dev, UVC_TRACE_DESCR,
> -                         "device %d videostreaming interface %d HEADER 
> descriptor not found.\n",
> -                         dev->udev->devnum, alts->desc.bInterfaceNumber);
> +               uvc_dbg(dev, DESCR,
> +                       "device %d videostreaming interface %d HEADER 
> descriptor not found\n",
> +                       dev->udev->devnum, alts->desc.bInterfaceNumber);
>                 goto error;
>         }
>
> @@ -871,9 +871,9 @@ static int uvc_parse_streaming(struct uvc_device *dev,
>         n = buflen >= size ? buffer[size-1] : 0;
>
>         if (buflen < size + p*n) {
> -               uvc_trace(dev, UVC_TRACE_DESCR,
> -                         "device %d videostreaming interface %d HEADER 
> descriptor is invalid.\n",
> -                         dev->udev->devnum, alts->desc.bInterfaceNumber);
> +               uvc_dbg(dev, DESCR,
> +                       "device %d videostreaming interface %d HEADER 
> descriptor is invalid\n",
> +                       dev->udev->devnum, alts->desc.bInterfaceNumber);
>                 goto error;
>         }
>
> @@ -923,10 +923,10 @@ static int uvc_parse_streaming(struct uvc_device *dev,
>
>                 case UVC_VS_FORMAT_MPEG2TS:
>                 case UVC_VS_FORMAT_STREAM_BASED:
> -                       uvc_trace(dev, UVC_TRACE_DESCR,
> -                                 "device %d videostreaming interface %d 
> FORMAT %u is not supported.\n",
> -                                 dev->udev->devnum,
> -                                 alts->desc.bInterfaceNumber, _buffer[2]);
> +                       uvc_dbg(dev, DESCR,
> +                               "device %d videostreaming interface %d FORMAT 
> %u is not supported\n",
> +                               dev->udev->devnum,
> +                               alts->desc.bInterfaceNumber, _buffer[2]);
>                         break;
>
>                 case UVC_VS_FRAME_UNCOMPRESSED:
> @@ -948,9 +948,9 @@ static int uvc_parse_streaming(struct uvc_device *dev,
>         }
>
>         if (nformats == 0) {
> -               uvc_trace(dev, UVC_TRACE_DESCR,
> -                         "device %d videostreaming interface %d has no 
> supported formats defined.\n",
> -                         dev->udev->devnum, alts->desc.bInterfaceNumber);
> +               uvc_dbg(dev, DESCR,
> +                       "device %d videostreaming interface %d has no 
> supported formats defined\n",
> +                       dev->udev->devnum, alts->desc.bInterfaceNumber);
>                 goto error;
>         }
>
> @@ -997,10 +997,9 @@ static int uvc_parse_streaming(struct uvc_device *dev,
>         }
>
>         if (buflen)
> -               uvc_trace(dev, UVC_TRACE_DESCR,
> -                         "device %d videostreaming interface %d has %u bytes 
> of trailing descriptor garbage.\n",
> -                         dev->udev->devnum, alts->desc.bInterfaceNumber,
> -                         buflen);
> +               uvc_dbg(dev, DESCR,
> +                       "device %d videostreaming interface %d has %u bytes 
> of trailing descriptor garbage\n",
> +                       dev->udev->devnum, alts->desc.bInterfaceNumber, 
> buflen);
>
>         /* Parse the alternate settings to find the maximum bandwidth. */
>         for (i = 0; i < intf->num_altsetting; ++i) {
> @@ -1133,9 +1132,9 @@ static int uvc_parse_vendor_control(struct uvc_device 
> *dev,
>                 n = buflen >= 25 + p ? buffer[22+p] : 0;
>
>                 if (buflen < 25 + p + 2*n) {
> -                       uvc_trace(dev, UVC_TRACE_DESCR,
> -                                 "device %d videocontrol interface %d 
> EXTENSION_UNIT error\n",
> -                                 udev->devnum, alts->desc.bInterfaceNumber);
> +                       uvc_dbg(dev, DESCR,
> +                               "device %d videocontrol interface %d 
> EXTENSION_UNIT error\n",
> +                               udev->devnum, alts->desc.bInterfaceNumber);
>                         break;
>                 }
>
> @@ -1182,9 +1181,9 @@ static int uvc_parse_standard_control(struct uvc_device 
> *dev,
>                 n = buflen >= 12 ? buffer[11] : 0;
>
>                 if (buflen < 12 + n) {
> -                       uvc_trace(dev, UVC_TRACE_DESCR,
> -                                 "device %d videocontrol interface %d HEADER 
> error\n",
> -                                 udev->devnum, alts->desc.bInterfaceNumber);
> +                       uvc_dbg(dev, DESCR,
> +                               "device %d videocontrol interface %d HEADER 
> error\n",
> +                               udev->devnum, alts->desc.bInterfaceNumber);
>                         return -EINVAL;
>                 }
>
> @@ -1195,9 +1194,9 @@ static int uvc_parse_standard_control(struct uvc_device 
> *dev,
>                 for (i = 0; i < n; ++i) {
>                         intf = usb_ifnum_to_if(udev, buffer[12+i]);
>                         if (intf == NULL) {
> -                               uvc_trace(dev, UVC_TRACE_DESCR,
> -                                         "device %d interface %d doesn't 
> exists\n",
> -                                         udev->devnum, i);
> +                               uvc_dbg(dev, DESCR,
> +                                       "device %d interface %d doesn't 
> exists\n",
> +                                       udev->devnum, i);
>                                 continue;
>                         }
>
> @@ -1207,9 +1206,9 @@ static int uvc_parse_standard_control(struct uvc_device 
> *dev,
>
>         case UVC_VC_INPUT_TERMINAL:
>                 if (buflen < 8) {
> -                       uvc_trace(dev, UVC_TRACE_DESCR,
> -                                 "device %d videocontrol interface %d 
> INPUT_TERMINAL error\n",
> -                                 udev->devnum, alts->desc.bInterfaceNumber);
> +                       uvc_dbg(dev, DESCR,
> +                               "device %d videocontrol interface %d 
> INPUT_TERMINAL error\n",
> +                               udev->devnum, alts->desc.bInterfaceNumber);
>                         return -EINVAL;
>                 }
>
> @@ -1226,10 +1225,10 @@ static int uvc_parse_standard_control(struct 
> uvc_device *dev,
>                  */
>                 type = get_unaligned_le16(&buffer[4]);
>                 if ((type & 0x7f00) == 0 || (type & 0x8000) != 0) {
> -                       uvc_trace(dev, UVC_TRACE_DESCR,
> -                                 "device %d videocontrol interface %d 
> INPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
> -                                 udev->devnum, alts->desc.bInterfaceNumber,
> -                                 buffer[3], type);
> +                       uvc_dbg(dev, DESCR,
> +                               "device %d videocontrol interface %d 
> INPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
> +                               udev->devnum, alts->desc.bInterfaceNumber,
> +                               buffer[3], type);
>                         return 0;
>                 }
>
> @@ -1248,9 +1247,9 @@ static int uvc_parse_standard_control(struct uvc_device 
> *dev,
>                 }
>
>                 if (buflen < len + n + p) {
> -                       uvc_trace(dev, UVC_TRACE_DESCR,
> -                                 "device %d videocontrol interface %d 
> INPUT_TERMINAL error\n",
> -                                 udev->devnum, alts->desc.bInterfaceNumber);
> +                       uvc_dbg(dev, DESCR,
> +                               "device %d videocontrol interface %d 
> INPUT_TERMINAL error\n",
> +                               udev->devnum, alts->desc.bInterfaceNumber);
>                         return -EINVAL;
>                 }
>
> @@ -1295,9 +1294,9 @@ static int uvc_parse_standard_control(struct uvc_device 
> *dev,
>
>         case UVC_VC_OUTPUT_TERMINAL:
>                 if (buflen < 9) {
> -                       uvc_trace(dev, UVC_TRACE_DESCR,
> -                                 "device %d videocontrol interface %d 
> OUTPUT_TERMINAL error\n",
> -                                 udev->devnum, alts->desc.bInterfaceNumber);
> +                       uvc_dbg(dev, DESCR,
> +                               "device %d videocontrol interface %d 
> OUTPUT_TERMINAL error\n",
> +                               udev->devnum, alts->desc.bInterfaceNumber);
>                         return -EINVAL;
>                 }
>
> @@ -1306,10 +1305,10 @@ static int uvc_parse_standard_control(struct 
> uvc_device *dev,
>                  */
>                 type = get_unaligned_le16(&buffer[4]);
>                 if ((type & 0xff00) == 0) {
> -                       uvc_trace(dev, UVC_TRACE_DESCR,
> -                                 "device %d videocontrol interface %d 
> OUTPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
> -                                 udev->devnum, alts->desc.bInterfaceNumber,
> -                                 buffer[3], type);
> +                       uvc_dbg(dev, DESCR,
> +                               "device %d videocontrol interface %d 
> OUTPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
> +                               udev->devnum, alts->desc.bInterfaceNumber,
> +                               buffer[3], type);
>                         return 0;
>                 }
>
> @@ -1333,9 +1332,9 @@ static int uvc_parse_standard_control(struct uvc_device 
> *dev,
>                 p = buflen >= 5 ? buffer[4] : 0;
>
>                 if (buflen < 5 || buflen < 6 + p) {
> -                       uvc_trace(dev, UVC_TRACE_DESCR,
> -                                 "device %d videocontrol interface %d 
> SELECTOR_UNIT error\n",
> -                                 udev->devnum, alts->desc.bInterfaceNumber);
> +                       uvc_dbg(dev, DESCR,
> +                               "device %d videocontrol interface %d 
> SELECTOR_UNIT error\n",
> +                               udev->devnum, alts->desc.bInterfaceNumber);
>                         return -EINVAL;
>                 }
>
> @@ -1359,9 +1358,9 @@ static int uvc_parse_standard_control(struct uvc_device 
> *dev,
>                 p = dev->uvc_version >= 0x0110 ? 10 : 9;
>
>                 if (buflen < p + n) {
> -                       uvc_trace(dev, UVC_TRACE_DESCR,
> -                                 "device %d videocontrol interface %d 
> PROCESSING_UNIT error\n",
> -                                 udev->devnum, alts->desc.bInterfaceNumber);
> +                       uvc_dbg(dev, DESCR,
> +                               "device %d videocontrol interface %d 
> PROCESSING_UNIT error\n",
> +                               udev->devnum, alts->desc.bInterfaceNumber);
>                         return -EINVAL;
>                 }
>
> @@ -1392,9 +1391,9 @@ static int uvc_parse_standard_control(struct uvc_device 
> *dev,
>                 n = buflen >= 24 + p ? buffer[22+p] : 0;
>
>                 if (buflen < 24 + p + n) {
> -                       uvc_trace(dev, UVC_TRACE_DESCR,
> -                                 "device %d videocontrol interface %d 
> EXTENSION_UNIT error\n",
> -                                 udev->devnum, alts->desc.bInterfaceNumber);
> +                       uvc_dbg(dev, DESCR,
> +                               "device %d videocontrol interface %d 
> EXTENSION_UNIT error\n",
> +                               udev->devnum, alts->desc.bInterfaceNumber);
>                         return -EINVAL;
>                 }
>
> @@ -1419,9 +1418,9 @@ static int uvc_parse_standard_control(struct uvc_device 
> *dev,
>                 break;
>
>         default:
> -               uvc_trace(dev, UVC_TRACE_DESCR,
> -                         "Found an unknown CS_INTERFACE descriptor (%u)\n",
> -                         buffer[2]);
> +               uvc_dbg(dev, DESCR,
> +                       "Found an unknown CS_INTERFACE descriptor (%u)\n",
> +                       buffer[2]);
>                 break;
>         }
>
> @@ -1466,9 +1465,9 @@ static int uvc_parse_control(struct uvc_device *dev)
>                 if (usb_endpoint_is_int_in(desc) &&
>                     le16_to_cpu(desc->wMaxPacketSize) >= 8 &&
>                     desc->bInterval != 0) {
> -                       uvc_trace(dev, UVC_TRACE_DESCR,
> -                                 "Found a Status endpoint (addr %02x).\n",
> -                                 desc->bEndpointAddress);
> +                       uvc_dbg(dev, DESCR,
> +                               "Found a Status endpoint (addr %02x)\n",
> +                               desc->bEndpointAddress);
>                         dev->int_ep = ep;
>                 }
>         }
> @@ -1652,23 +1651,23 @@ static int uvc_scan_chain_entity(struct 
> uvc_video_chain *chain,
>  {
>         switch (UVC_ENTITY_TYPE(entity)) {
>         case UVC_VC_EXTENSION_UNIT:
> -               uvc_trace_cont(UVC_TRACE_PROBE, " <- XU %d", entity->id);
> +               uvc_dbg_cont(PROBE, " <- XU %d", entity->id);
>
>                 if (entity->bNrInPins != 1) {
> -                       uvc_trace(chain->dev, UVC_TRACE_DESCR,
> -                                 "Extension unit %d has more than 1 input 
> pin.\n",
> -                                 entity->id);
> +                       uvc_dbg(chain->dev, DESCR,
> +                               "Extension unit %d has more than 1 input 
> pin\n",
> +                               entity->id);
>                         return -1;
>                 }
>
>                 break;
>
>         case UVC_VC_PROCESSING_UNIT:
> -               uvc_trace_cont(UVC_TRACE_PROBE, " <- PU %d", entity->id);
> +               uvc_dbg_cont(PROBE, " <- PU %d", entity->id);
>
>                 if (chain->processing != NULL) {
> -                       uvc_trace(chain->dev, UVC_TRACE_DESCR,
> -                                 "Found multiple Processing Units in 
> chain.\n");
> +                       uvc_dbg(chain->dev, DESCR,
> +                               "Found multiple Processing Units in chain\n");
>                         return -1;
>                 }
>
> @@ -1676,15 +1675,15 @@ static int uvc_scan_chain_entity(struct 
> uvc_video_chain *chain,
>                 break;
>
>         case UVC_VC_SELECTOR_UNIT:
> -               uvc_trace_cont(UVC_TRACE_PROBE, " <- SU %d", entity->id);
> +               uvc_dbg_cont(PROBE, " <- SU %d", entity->id);
>
>                 /* Single-input selector units are ignored. */
>                 if (entity->bNrInPins == 1)
>                         break;
>
>                 if (chain->selector != NULL) {
> -                       uvc_trace(chain->dev, UVC_TRACE_DESCR,
> -                                 "Found multiple Selector Units in 
> chain.\n");
> +                       uvc_dbg(chain->dev, DESCR,
> +                               "Found multiple Selector Units in chain\n");
>                         return -1;
>                 }
>
> @@ -1694,29 +1693,29 @@ static int uvc_scan_chain_entity(struct 
> uvc_video_chain *chain,
>         case UVC_ITT_VENDOR_SPECIFIC:
>         case UVC_ITT_CAMERA:
>         case UVC_ITT_MEDIA_TRANSPORT_INPUT:
> -               uvc_trace_cont(UVC_TRACE_PROBE, " <- IT %d\n", entity->id);
> +               uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id);
>
>                 break;
>
>         case UVC_OTT_VENDOR_SPECIFIC:
>         case UVC_OTT_DISPLAY:
>         case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
> -               uvc_trace_cont(UVC_TRACE_PROBE, " OT %d", entity->id);
> +               uvc_dbg_cont(PROBE, " OT %d", entity->id);
>
>                 break;
>
>         case UVC_TT_STREAMING:
>                 if (UVC_ENTITY_IS_ITERM(entity))
> -                       uvc_trace_cont(UVC_TRACE_PROBE, " <- IT %d\n", 
> entity->id);
> +                       uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id);
>                 else
> -                       uvc_trace_cont(UVC_TRACE_PROBE, " OT %d", entity->id);
> +                       uvc_dbg_cont(PROBE, " OT %d", entity->id);
>
>                 break;
>
>         default:
> -               uvc_trace(chain->dev, UVC_TRACE_DESCR,
> -                         "Unsupported entity type 0x%04x found in chain.\n",
> -                         UVC_ENTITY_TYPE(entity));
> +               uvc_dbg(chain->dev, DESCR,
> +                       "Unsupported entity type 0x%04x found in chain\n",
> +                       UVC_ENTITY_TYPE(entity));
>                 return -1;
>         }
>
> @@ -1742,26 +1741,26 @@ static int uvc_scan_chain_forward(struct 
> uvc_video_chain *chain,
>                 if (forward == prev)
>                         continue;
>                 if (forward->chain.next || forward->chain.prev) {
> -                       uvc_trace(chain->dev, UVC_TRACE_DESCR,
> -                                 "Found reference to entity %d already in 
> chain.\n",
> -                                 forward->id);
> +                       uvc_dbg(chain->dev, DESCR,
> +                               "Found reference to entity %d already in 
> chain\n",
> +                               forward->id);
>                         return -EINVAL;
>                 }
>
>                 switch (UVC_ENTITY_TYPE(forward)) {
>                 case UVC_VC_EXTENSION_UNIT:
>                         if (forward->bNrInPins != 1) {
> -                               uvc_trace(chain->dev, UVC_TRACE_DESCR,
> -                                         "Extension unit %d has more than 1 
> input pin.\n",
> -                                         entity->id);
> +                               uvc_dbg(chain->dev, DESCR,
> +                                       "Extension unit %d has more than 1 
> input pin\n",
> +                                       entity->id);
>                                 return -EINVAL;
>                         }
>
>                         list_add_tail(&forward->chain, &chain->entities);
>                         if (!found)
> -                               uvc_trace_cont(UVC_TRACE_PROBE, " (->");
> +                               uvc_dbg_cont(PROBE, " (->");
>
> -                       uvc_trace_cont(UVC_TRACE_PROBE, " XU %d", 
> forward->id);
> +                       uvc_dbg_cont(PROBE, " XU %d", forward->id);
>                         found = 1;
>                         break;
>
> @@ -1770,23 +1769,23 @@ static int uvc_scan_chain_forward(struct 
> uvc_video_chain *chain,
>                 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
>                 case UVC_TT_STREAMING:
>                         if (UVC_ENTITY_IS_ITERM(forward)) {
> -                               uvc_trace(chain->dev, UVC_TRACE_DESCR,
> -                                         "Unsupported input terminal %u.\n",
> -                                         forward->id);
> +                               uvc_dbg(chain->dev, DESCR,
> +                                       "Unsupported input terminal %u\n",
> +                                       forward->id);
>                                 return -EINVAL;
>                         }
>
>                         list_add_tail(&forward->chain, &chain->entities);
>                         if (!found)
> -                               uvc_trace_cont(UVC_TRACE_PROBE, " (->");
> +                               uvc_dbg_cont(PROBE, " (->");
>
> -                       uvc_trace_cont(UVC_TRACE_PROBE, " OT %d", 
> forward->id);
> +                       uvc_dbg_cont(PROBE, " OT %d", forward->id);
>                         found = 1;
>                         break;
>                 }
>         }
>         if (found)
> -               uvc_trace_cont(UVC_TRACE_PROBE, ")");
> +               uvc_dbg_cont(PROBE, ")");
>
>         return 0;
>  }
> @@ -1811,33 +1810,33 @@ static int uvc_scan_chain_backward(struct 
> uvc_video_chain *chain,
>                         break;
>                 }
>
> -               uvc_trace_cont(UVC_TRACE_PROBE, " <- IT");
> +               uvc_dbg_cont(PROBE, " <- IT");
>
>                 chain->selector = entity;
>                 for (i = 0; i < entity->bNrInPins; ++i) {
>                         id = entity->baSourceID[i];
>                         term = uvc_entity_by_id(chain->dev, id);
>                         if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) {
> -                               uvc_trace(chain->dev, UVC_TRACE_DESCR,
> -                                         "Selector unit %d input %d isn't 
> connected to an input terminal\n",
> -                                         entity->id, i);
> +                               uvc_dbg(chain->dev, DESCR,
> +                                       "Selector unit %d input %d isn't 
> connected to an input terminal\n",
> +                                       entity->id, i);
>                                 return -1;
>                         }
>
>                         if (term->chain.next || term->chain.prev) {
> -                               uvc_trace(chain->dev, UVC_TRACE_DESCR,
> -                                         "Found reference to entity %d 
> already in chain.\n",
> -                                         term->id);
> +                               uvc_dbg(chain->dev, DESCR,
> +                                       "Found reference to entity %d already 
> in chain\n",
> +                                       term->id);
>                                 return -EINVAL;
>                         }
>
> -                       uvc_trace_cont(UVC_TRACE_PROBE, " %d", term->id);
> +                       uvc_dbg_cont(PROBE, " %d", term->id);
>
>                         list_add_tail(&term->chain, &chain->entities);
>                         uvc_scan_chain_forward(chain, term, entity);
>                 }
>
> -               uvc_trace_cont(UVC_TRACE_PROBE, "\n");
> +               uvc_dbg_cont(PROBE, "\n");
>
>                 id = 0;
>                 break;
> @@ -1860,8 +1859,8 @@ static int uvc_scan_chain_backward(struct 
> uvc_video_chain *chain,
>
>         entity = uvc_entity_by_id(chain->dev, id);
>         if (entity == NULL) {
> -               uvc_trace(chain->dev, UVC_TRACE_DESCR,
> -                         "Found reference to unknown entity %d.\n", id);
> +               uvc_dbg(chain->dev, DESCR,
> +                       "Found reference to unknown entity %d\n", id);
>                 return -EINVAL;
>         }
>
> @@ -1874,7 +1873,7 @@ static int uvc_scan_chain(struct uvc_video_chain *chain,
>  {
>         struct uvc_entity *entity, *prev;
>
> -       uvc_trace(chain->dev, UVC_TRACE_PROBE, "Scanning UVC chain:");
> +       uvc_dbg(chain->dev, PROBE, "Scanning UVC chain:");
>
>         entity = term;
>         prev = NULL;
> @@ -1882,9 +1881,9 @@ static int uvc_scan_chain(struct uvc_video_chain *chain,
>         while (entity != NULL) {
>                 /* Entity must not be part of an existing chain */
>                 if (entity->chain.next || entity->chain.prev) {
> -                       uvc_trace(chain->dev, UVC_TRACE_DESCR,
> -                                 "Found reference to entity %d already in 
> chain.\n",
> -                                 entity->id);
> +                       uvc_dbg(chain->dev, DESCR,
> +                               "Found reference to entity %d already in 
> chain\n",
> +                               entity->id);
>                         return -EINVAL;
>                 }
>
> @@ -2038,9 +2037,8 @@ static int uvc_scan_fallback(struct uvc_device *dev)
>
>         list_add_tail(&chain->list, &dev->chains);
>
> -       uvc_trace(dev, UVC_TRACE_PROBE,
> -                 "Found a video chain by fallback heuristic (%s).\n",
> -                 uvc_print_chain(chain));
> +       uvc_dbg(dev, PROBE, "Found a video chain by fallback heuristic 
> (%s)\n",
> +               uvc_print_chain(chain));
>
>         return 0;
>
> @@ -2082,9 +2080,8 @@ static int uvc_scan_device(struct uvc_device *dev)
>                         continue;
>                 }
>
> -               uvc_trace(dev, UVC_TRACE_PROBE,
> -                         "Found a valid video chain (%s).\n",
> -                         uvc_print_chain(chain));
> +               uvc_dbg(dev, PROBE, "Found a valid video chain (%s)\n",
> +                       uvc_print_chain(chain));
>
>                 list_add_tail(&chain->list, &dev->chains);
>         }
> @@ -2384,12 +2381,11 @@ static int uvc_probe(struct usb_interface *intf,
>                     ? dev->info->quirks : uvc_quirks_param;
>
>         if (id->idVendor && id->idProduct)
> -               uvc_trace(dev, UVC_TRACE_PROBE,
> -                         "Probing known UVC device %s (%04x:%04x)\n",
> -                         udev->devpath, id->idVendor, id->idProduct);
> +               uvc_dbg(dev, PROBE, "Probing known UVC device %s 
> (%04x:%04x)\n",
> +                       udev->devpath, id->idVendor, id->idProduct);
>         else
> -               uvc_trace(dev, UVC_TRACE_PROBE,
> -                         "Probing generic UVC device %s\n", udev->devpath);
> +               uvc_dbg(dev, PROBE, "Probing generic UVC device %s\n",
> +                       udev->devpath);
>
>         if (udev->product != NULL)
>                 strscpy(dev->name, udev->product, sizeof(dev->name));
> @@ -2433,14 +2429,13 @@ static int uvc_probe(struct usb_interface *intf,
>
>         /* Parse the Video Class control descriptor. */
>         if (uvc_parse_control(dev) < 0) {
> -               uvc_trace(dev, UVC_TRACE_PROBE,
> -                         "Unable to parse UVC descriptors.\n");
> +               uvc_dbg(dev, PROBE, "Unable to parse UVC descriptors\n");
>                 goto error;
>         }
>
>         /* Parse the associated GPIOs. */
>         if (uvc_gpio_parse(dev) < 0) {
> -               uvc_trace(dev, UVC_TRACE_PROBE, "Unable to parse UVC 
> GPIOs\n");
> +               uvc_dbg(dev, PROBE, "Unable to parse UVC GPIOs\n");
>                 goto error;
>         }
>
> @@ -2495,7 +2490,7 @@ static int uvc_probe(struct usb_interface *intf,
>                          "Unable to request privacy GPIO IRQ %d. Continuing 
> without privacy events\n",
>                          ret);
>
> -       uvc_trace(dev, UVC_TRACE_PROBE, "UVC device initialized.\n");
> +       uvc_dbg(dev, PROBE, "UVC device initialized\n");
>         usb_enable_autosuspend(udev);
>         return 0;
>
> @@ -2527,7 +2522,7 @@ static int uvc_suspend(struct usb_interface *intf, 
> pm_message_t message)
>         struct uvc_device *dev = usb_get_intfdata(intf);
>         struct uvc_streaming *stream;
>
> -       uvc_trace(dev, UVC_TRACE_SUSPEND, "Suspending interface %u\n",
> +       uvc_dbg(dev, SUSPEND, "Suspending interface %u\n",
>                 intf->cur_altsetting->desc.bInterfaceNumber);
>
>         /* Controls are cached on the fly so they don't need to be saved. */
> @@ -2545,8 +2540,8 @@ static int uvc_suspend(struct usb_interface *intf, 
> pm_message_t message)
>                         return uvc_video_suspend(stream);
>         }
>
> -       uvc_trace(dev, UVC_TRACE_SUSPEND,
> -                 "Suspend: video streaming USB interface mismatch.\n");
> +       uvc_dbg(dev, SUSPEND,
> +               "Suspend: video streaming USB interface mismatch\n");
>         return -EINVAL;
>  }
>
> @@ -2556,8 +2551,8 @@ static int __uvc_resume(struct usb_interface *intf, int 
> reset)
>         struct uvc_streaming *stream;
>         int ret = 0;
>
> -       uvc_trace(dev, UVC_TRACE_SUSPEND, "Resuming interface %u\n",
> -                 intf->cur_altsetting->desc.bInterfaceNumber);
> +       uvc_dbg(dev, SUSPEND, "Resuming interface %u\n",
> +               intf->cur_altsetting->desc.bInterfaceNumber);
>
>         if (intf->cur_altsetting->desc.bInterfaceSubClass ==
>             UVC_SC_VIDEOCONTROL) {
> @@ -2585,8 +2580,8 @@ static int __uvc_resume(struct usb_interface *intf, int 
> reset)
>                 }
>         }
>
> -       uvc_trace(dev, UVC_TRACE_SUSPEND,
> -                 "Resume: video streaming USB interface mismatch.\n");
> +       uvc_dbg(dev, SUSPEND,
> +               "Resume: video streaming USB interface mismatch\n");
>         return -EINVAL;
>  }
>
> @@ -2636,7 +2631,7 @@ module_param_named(nodrop, uvc_no_drop_param, uint, 
> S_IRUGO|S_IWUSR);
>  MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames");
>  module_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR);
>  MODULE_PARM_DESC(quirks, "Forced device quirks");
> -module_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR);
> +module_param_named(trace, uvc_dbg_param, uint, S_IRUGO|S_IWUSR);
>  MODULE_PARM_DESC(trace, "Trace level bitmask");
>  module_param_named(timeout, uvc_timeout_param, uint, S_IRUGO|S_IWUSR);
>  MODULE_PARM_DESC(timeout, "Streaming control requests timeout");
> diff --git a/drivers/media/usb/uvc/uvc_isight.c 
> b/drivers/media/usb/uvc/uvc_isight.c
> index 445c4d39aeff..2578d6ee4829 100644
> --- a/drivers/media/usb/uvc/uvc_isight.c
> +++ b/drivers/media/usb/uvc/uvc_isight.c
> @@ -50,16 +50,15 @@ static int isight_decode(struct uvc_video_queue *queue, 
> struct uvc_buffer *buf,
>
>         if ((len >= 14 && memcmp(&data[2], hdr, 12) == 0) ||
>             (len >= 15 && memcmp(&data[3], hdr, 12) == 0)) {
> -               uvc_trace(stream->dev, UVC_TRACE_FRAME,
> -                         "iSight header found\n");
> +               uvc_dbg(stream->dev, FRAME, "iSight header found\n");
>                 is_header = 1;
>         }
>
>         /* Synchronize to the input stream by waiting for a header packet. */
>         if (buf->state != UVC_BUF_STATE_ACTIVE) {
>                 if (!is_header) {
> -                       uvc_trace(stream->dev, UVC_TRACE_FRAME,
> -                                 "Dropping packet (out of sync).\n");
> +                       uvc_dbg(stream->dev, FRAME,
> +                               "Dropping packet (out of sync)\n");
>                         return 0;
>                 }
>
> @@ -87,8 +86,8 @@ static int isight_decode(struct uvc_video_queue *queue, 
> struct uvc_buffer *buf,
>                 buf->bytesused += nbytes;
>
>                 if (len > maxlen || buf->bytesused == buf->length) {
> -                       uvc_trace(stream->dev, UVC_TRACE_FRAME,
> -                                 "Frame complete (overflow).\n");
> +                       uvc_dbg(stream->dev, FRAME,
> +                               "Frame complete (overflow)\n");
>                         buf->state = UVC_BUF_STATE_DONE;
>                 }
>         }
> @@ -105,9 +104,9 @@ void uvc_video_decode_isight(struct uvc_urb *uvc_urb, 
> struct uvc_buffer *buf,
>
>         for (i = 0; i < urb->number_of_packets; ++i) {
>                 if (urb->iso_frame_desc[i].status < 0) {
> -                       uvc_trace(stream->dev, UVC_TRACE_FRAME,
> -                                 "USB isochronous frame lost (%d).\n",
> -                                 urb->iso_frame_desc[i].status);
> +                       uvc_dbg(stream->dev, FRAME,
> +                               "USB isochronous frame lost (%d)\n",
> +                               urb->iso_frame_desc[i].status);
>                 }
>
>                 /* Decode the payload packet.
> diff --git a/drivers/media/usb/uvc/uvc_queue.c 
> b/drivers/media/usb/uvc/uvc_queue.c
> index 2255daa3e240..21a907d32bb7 100644
> --- a/drivers/media/usb/uvc/uvc_queue.c
> +++ b/drivers/media/usb/uvc/uvc_queue.c
> @@ -103,8 +103,8 @@ static int uvc_buffer_prepare(struct vb2_buffer *vb)
>
>         if (vb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT &&
>             vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) {
> -               uvc_trace(uvc_queue_to_stream(queue)->dev, UVC_TRACE_CAPTURE,
> -                         "[E] Bytes used out of bounds.\n");
> +               uvc_dbg(uvc_queue_to_stream(queue)->dev, CAPTURE,
> +                       "[E] Bytes used out of bounds\n");
>                 return -EINVAL;
>         }
>
> diff --git a/drivers/media/usb/uvc/uvc_status.c 
> b/drivers/media/usb/uvc/uvc_status.c
> index b5f493216fcd..d65666bc68f3 100644
> --- a/drivers/media/usb/uvc/uvc_status.c
> +++ b/drivers/media/usb/uvc/uvc_status.c
> @@ -93,22 +93,21 @@ static void uvc_event_streaming(struct uvc_device *dev,
>                                 struct uvc_streaming_status *status, int len)
>  {
>         if (len < 3) {
> -               uvc_trace(dev, UVC_TRACE_STATUS,
> -                         "Invalid streaming status event received.\n");
> +               uvc_dbg(dev, STATUS,
> +                       "Invalid streaming status event received\n");
>                 return;
>         }
>
>         if (status->bEvent == 0) {
>                 if (len < 4)
>                         return;
> -               uvc_trace(dev, UVC_TRACE_STATUS, "Button (intf %u) %s len 
> %d\n",
> -                         status->bOriginator,
> -                         status->bValue[0] ? "pressed" : "released", len);
> +               uvc_dbg(dev, STATUS, "Button (intf %u) %s len %d\n",
> +                       status->bOriginator,
> +                       status->bValue[0] ? "pressed" : "released", len);
>                 uvc_input_report_key(dev, KEY_CAMERA, status->bValue[0]);
>         } else {
> -               uvc_trace(dev, UVC_TRACE_STATUS,
> -                         "Stream %u error event %02x len %d.\n",
> -                         status->bOriginator, status->bEvent, len);
> +               uvc_dbg(dev, STATUS, "Stream %u error event %02x len %d\n",
> +                       status->bOriginator, status->bEvent, len);
>         }
>  }
>
> @@ -163,14 +162,13 @@ static bool uvc_event_control(struct urb *urb,
>
>         if (len < 6 || status->bEvent != 0 ||
>             status->bAttribute >= ARRAY_SIZE(attrs)) {
> -               uvc_trace(dev, UVC_TRACE_STATUS,
> -                         "Invalid control status event received.\n");
> +               uvc_dbg(dev, STATUS, "Invalid control status event 
> received\n");
>                 return false;
>         }
>
> -       uvc_trace(dev, UVC_TRACE_STATUS, "Control %u/%u %s change len %d.\n",
> -                 status->bOriginator, status->bSelector,
> -                 attrs[status->bAttribute], len);
> +       uvc_dbg(dev, STATUS, "Control %u/%u %s change len %d\n",
> +               status->bOriginator, status->bSelector,
> +               attrs[status->bAttribute], len);
>
>         /* Find the control. */
>         ctrl = uvc_event_find_ctrl(dev, status, &chain);
> @@ -236,9 +234,8 @@ static void uvc_status_complete(struct urb *urb)
>                 }
>
>                 default:
> -                       uvc_trace(dev, UVC_TRACE_STATUS,
> -                                 "Unknown status event type %u.\n",
> -                                 dev->status[0]);
> +                       uvc_dbg(dev, STATUS, "Unknown status event type %u\n",
> +                               dev->status[0]);
>                         break;
>                 }
>         }
> diff --git a/drivers/media/usb/uvc/uvc_v4l2.c 
> b/drivers/media/usb/uvc/uvc_v4l2.c
> index 3a2d17bc766b..2b8cbb4730e0 100644
> --- a/drivers/media/usb/uvc/uvc_v4l2.c
> +++ b/drivers/media/usb/uvc/uvc_v4l2.c
> @@ -75,9 +75,8 @@ static int uvc_ioctl_ctrl_map(struct uvc_video_chain *chain,
>                 break;
>
>         default:
> -               uvc_trace(chain->dev, UVC_TRACE_CONTROL,
> -                         "Unsupported V4L2 control type %u.\n",
> -                         xmap->v4l2_type);
> +               uvc_dbg(chain->dev, CONTROL,
> +                       "Unsupported V4L2 control type %u\n", 
> xmap->v4l2_type);
>                 ret = -ENOTTY;
>                 goto free_map;
>         }
> @@ -165,11 +164,10 @@ static int uvc_v4l2_try_format(struct uvc_streaming 
> *stream,
>                 return -EINVAL;
>
>         fcc = (u8 *)&fmt->fmt.pix.pixelformat;
> -       uvc_trace(stream->dev, UVC_TRACE_FORMAT,
> -                 "Trying format 0x%08x (%c%c%c%c): %ux%u.\n",
> -                 fmt->fmt.pix.pixelformat,
> -                 fcc[0], fcc[1], fcc[2], fcc[3],
> -                 fmt->fmt.pix.width, fmt->fmt.pix.height);
> +       uvc_dbg(stream->dev, FORMAT, "Trying format 0x%08x (%c%c%c%c): 
> %ux%u\n",
> +               fmt->fmt.pix.pixelformat,
> +               fcc[0], fcc[1], fcc[2], fcc[3],
> +               fmt->fmt.pix.width, fmt->fmt.pix.height);
>
>         /* Check if the hardware supports the requested format, use the 
> default
>          * format otherwise.
> @@ -209,18 +207,17 @@ static int uvc_v4l2_try_format(struct uvc_streaming 
> *stream,
>         }
>
>         if (frame == NULL) {
> -               uvc_trace(stream->dev, UVC_TRACE_FORMAT,
> -                         "Unsupported size %ux%u.\n", fmt->fmt.pix.width,
> -                         fmt->fmt.pix.height);
> +               uvc_dbg(stream->dev, FORMAT, "Unsupported size %ux%u\n",
> +                       fmt->fmt.pix.width, fmt->fmt.pix.height);
>                 return -EINVAL;
>         }
>
>         /* Use the default frame interval. */
>         interval = frame->dwDefaultFrameInterval;
> -       uvc_trace(stream->dev, UVC_TRACE_FORMAT,
> -                 "Using default frame interval %u.%u us (%u.%u fps).\n",
> -                 interval / 10, interval % 10, 10000000 / interval,
> -                (100000000 / interval) % 10);
> +       uvc_dbg(stream->dev, FORMAT,
> +               "Using default frame interval %u.%u us (%u.%u fps)\n",
> +               interval / 10, interval % 10, 10000000 / interval,
> +               (100000000 / interval) % 10);
>
>         /* Set the format index, frame index and frame interval. */
>         memset(probe, 0, sizeof(*probe));
> @@ -262,9 +259,8 @@ static int uvc_v4l2_try_format(struct uvc_streaming 
> *stream,
>         }
>
>         if (i == stream->nformats) {
> -               uvc_trace(stream->dev, UVC_TRACE_FORMAT,
> -                         "Unknown bFormatIndex %u\n",
> -                         probe->bFormatIndex);
> +               uvc_dbg(stream->dev, FORMAT, "Unknown bFormatIndex %u\n",
> +                       probe->bFormatIndex);
>                 return -EINVAL;
>         }
>
> @@ -276,9 +272,8 @@ static int uvc_v4l2_try_format(struct uvc_streaming 
> *stream,
>         }
>
>         if (i == format->nframes) {
> -               uvc_trace(stream->dev, UVC_TRACE_FORMAT,
> -                         "Unknown bFrameIndex %u\n",
> -                         probe->bFrameIndex);
> +               uvc_dbg(stream->dev, FORMAT, "Unknown bFrameIndex %u\n",
> +                       probe->bFrameIndex);
>                 return -EINVAL;
>         }
>
> @@ -422,9 +417,8 @@ static int uvc_v4l2_set_streamparm(struct uvc_streaming 
> *stream,
>
>         interval = uvc_fraction_to_interval(timeperframe.numerator,
>                 timeperframe.denominator);
> -       uvc_trace(stream->dev, UVC_TRACE_FORMAT,
> -                 "Setting frame interval to %u/%u (%u).\n",
> -                 timeperframe.numerator, timeperframe.denominator, interval);
> +       uvc_dbg(stream->dev, FORMAT, "Setting frame interval to %u/%u (%u)\n",
> +               timeperframe.numerator, timeperframe.denominator, interval);
>
>         mutex_lock(&stream->mutex);
>
> @@ -553,7 +547,7 @@ static int uvc_v4l2_open(struct file *file)
>         int ret = 0;
>
>         stream = video_drvdata(file);
> -       uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);
> +       uvc_dbg(stream->dev, CALLS, "%s\n", __func__);
>
>         ret = usb_autopm_get_interface(stream->dev->intf);
>         if (ret < 0)
> @@ -595,7 +589,7 @@ static int uvc_v4l2_release(struct file *file)
>         struct uvc_fh *handle = file->private_data;
>         struct uvc_streaming *stream = handle->stream;
>
> -       uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);
> +       uvc_dbg(stream->dev, CALLS, "%s\n", __func__);
>
>         /* Only free resources if this is a privileged handle. */
>         if (uvc_has_privileges(handle))
> @@ -1471,8 +1465,7 @@ static ssize_t uvc_v4l2_read(struct file *file, char 
> __user *data,
>         struct uvc_fh *handle = file->private_data;
>         struct uvc_streaming *stream = handle->stream;
>
> -       uvc_trace(stream->dev, UVC_TRACE_CALLS,
> -                 "uvc_v4l2_read: not implemented.\n");
> +       uvc_dbg(stream->dev, CALLS, "%s: not implemented\n", __func__);
>         return -EINVAL;
>  }
>
> @@ -1481,7 +1474,7 @@ static int uvc_v4l2_mmap(struct file *file, struct 
> vm_area_struct *vma)
>         struct uvc_fh *handle = file->private_data;
>         struct uvc_streaming *stream = handle->stream;
>
> -       uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);
> +       uvc_dbg(stream->dev, CALLS, "%s\n", __func__);
>
>         return uvc_queue_mmap(&stream->queue, vma);
>  }
> @@ -1491,7 +1484,7 @@ static __poll_t uvc_v4l2_poll(struct file *file, 
> poll_table *wait)
>         struct uvc_fh *handle = file->private_data;
>         struct uvc_streaming *stream = handle->stream;
>
> -       uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);
> +       uvc_dbg(stream->dev, CALLS, "%s\n", __func__);
>
>         return uvc_queue_poll(&stream->queue, file, wait);
>  }
> @@ -1504,7 +1497,7 @@ static unsigned long uvc_v4l2_get_unmapped_area(struct 
> file *file,
>         struct uvc_fh *handle = file->private_data;
>         struct uvc_streaming *stream = handle->stream;
>
> -       uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);
> +       uvc_dbg(stream->dev, CALLS, "%s\n", __func__);
>
>         return uvc_queue_get_unmapped_area(&stream->queue, pgoff);
>  }
> diff --git a/drivers/media/usb/uvc/uvc_video.c 
> b/drivers/media/usb/uvc/uvc_video.c
> index e44fcb645516..7189624e1ec7 100644
> --- a/drivers/media/usb/uvc/uvc_video.c
> +++ b/drivers/media/usb/uvc/uvc_video.c
> @@ -95,7 +95,7 @@ int uvc_query_ctrl(struct uvc_device *dev, u8 query, u8 
> unit,
>         if (ret != 1)
>                 return ret < 0 ? ret : -EPIPE;
>
> -       uvc_trace(dev, UVC_TRACE_CONTROL, "Control error %u\n", error);
> +       uvc_dbg(dev, CONTROL, "Control error %u\n", error);
>
>         switch (error) {
>         case 0:
> @@ -705,12 +705,12 @@ void uvc_video_clock_update(struct uvc_streaming 
> *stream,
>
>         sof = y;
>
> -       uvc_trace(stream->dev, UVC_TRACE_CLOCK,
> -                 "%s: PTS %u y %llu.%06llu SOF %u.%06llu (x1 %u x2 %u y1 %u 
> y2 %u SOF offset %u)\n",
> -                 stream->dev->name, buf->pts,
> -                 y >> 16, div_u64((y & 0xffff) * 1000000, 65536),
> -                 sof >> 16, div_u64(((u64)sof & 0xffff) * 1000000LLU, 65536),
> -                 x1, x2, y1, y2, clock->sof_offset);
> +       uvc_dbg(stream->dev, CLOCK,
> +               "%s: PTS %u y %llu.%06llu SOF %u.%06llu (x1 %u x2 %u y1 %u y2 
> %u SOF offset %u)\n",
> +               stream->dev->name, buf->pts,
> +               y >> 16, div_u64((y & 0xffff) * 1000000, 65536),
> +               sof >> 16, div_u64(((u64)sof & 0xffff) * 1000000LLU, 65536),
> +               x1, x2, y1, y2, clock->sof_offset);
>
>         /* Second step, SOF to host clock conversion. */
>         x1 = (uvc_video_clock_host_sof(first) + 2048) << 16;
> @@ -740,13 +740,13 @@ void uvc_video_clock_update(struct uvc_streaming 
> *stream,
>
>         timestamp = ktime_to_ns(first->host_time) + y - y1;
>
> -       uvc_trace(stream->dev, UVC_TRACE_CLOCK,
> -                 "%s: SOF %u.%06llu y %llu ts %llu buf ts %llu (x1 %u/%u/%u 
> x2 %u/%u/%u y1 %u y2 %u)\n",
> -                 stream->dev->name,
> -                 sof >> 16, div_u64(((u64)sof & 0xffff) * 1000000LLU, 65536),
> -                 y, timestamp, vbuf->vb2_buf.timestamp,
> -                 x1, first->host_sof, first->dev_sof,
> -                 x2, last->host_sof, last->dev_sof, y1, y2);
> +       uvc_dbg(stream->dev, CLOCK,
> +               "%s: SOF %u.%06llu y %llu ts %llu buf ts %llu (x1 %u/%u/%u x2 
> %u/%u/%u y1 %u y2 %u)\n",
> +               stream->dev->name,
> +               sof >> 16, div_u64(((u64)sof & 0xffff) * 1000000LLU, 65536),
> +               y, timestamp, vbuf->vb2_buf.timestamp,
> +               x1, first->host_sof, first->dev_sof,
> +               x2, last->host_sof, last->dev_sof, y1, y2);
>
>         /* Update the V4L2 buffer. */
>         vbuf->vb2_buf.timestamp = timestamp;
> @@ -875,15 +875,15 @@ static void uvc_video_stats_update(struct uvc_streaming 
> *stream)
>  {
>         struct uvc_stats_frame *frame = &stream->stats.frame;
>
> -       uvc_trace(stream->dev, UVC_TRACE_STATS,
> -                 "frame %u stats: %u/%u/%u packets, %u/%u/%u pts (%searly 
> %sinitial), %u/%u scr, last pts/stc/sof %u/%u/%u\n",
> -                 stream->sequence, frame->first_data,
> -                 frame->nb_packets - frame->nb_empty, frame->nb_packets,
> -                 frame->nb_pts_diffs, frame->last_pts_diff, frame->nb_pts,
> -                 frame->has_early_pts ? "" : "!",
> -                 frame->has_initial_pts ? "" : "!",
> -                 frame->nb_scr_diffs, frame->nb_scr,
> -                 frame->pts, frame->scr_stc, frame->scr_sof);
> +       uvc_dbg(stream->dev, STATS,
> +               "frame %u stats: %u/%u/%u packets, %u/%u/%u pts (%searly 
> %sinitial), %u/%u scr, last pts/stc/sof %u/%u/%u\n",
> +               stream->sequence, frame->first_data,
> +               frame->nb_packets - frame->nb_empty, frame->nb_packets,
> +               frame->nb_pts_diffs, frame->last_pts_diff, frame->nb_pts,
> +               frame->has_early_pts ? "" : "!",
> +               frame->has_initial_pts ? "" : "!",
> +               frame->nb_scr_diffs, frame->nb_scr,
> +               frame->pts, frame->scr_stc, frame->scr_sof);
>
>         stream->stats.stream.nb_frames++;
>         stream->stats.stream.nb_packets += stream->stats.frame.nb_packets;
> @@ -1038,8 +1038,8 @@ static int uvc_video_decode_start(struct uvc_streaming 
> *stream,
>
>         /* Mark the buffer as bad if the error bit is set. */
>         if (data[1] & UVC_STREAM_ERR) {
> -               uvc_trace(stream->dev, UVC_TRACE_FRAME,
> -                         "Marking buffer as bad (error bit set).\n");
> +               uvc_dbg(stream->dev, FRAME,
> +                       "Marking buffer as bad (error bit set)\n");
>                 buf->error = 1;
>         }
>
> @@ -1053,8 +1053,8 @@ static int uvc_video_decode_start(struct uvc_streaming 
> *stream,
>          */
>         if (buf->state != UVC_BUF_STATE_ACTIVE) {
>                 if (fid == stream->last_fid) {
> -                       uvc_trace(stream->dev, UVC_TRACE_FRAME,
> -                                 "Dropping payload (out of sync).\n");
> +                       uvc_dbg(stream->dev, FRAME,
> +                               "Dropping payload (out of sync)\n");
>                         if ((stream->dev->quirks & UVC_QUIRK_STREAM_NO_FID) &&
>                             (data[1] & UVC_STREAM_EOF))
>                                 stream->last_fid ^= UVC_STREAM_FID;
> @@ -1085,8 +1085,8 @@ static int uvc_video_decode_start(struct uvc_streaming 
> *stream,
>          * previous payload had the EOF bit set.
>          */
>         if (fid != stream->last_fid && buf->bytesused != 0) {
> -               uvc_trace(stream->dev, UVC_TRACE_FRAME,
> -                         "Frame complete (FID bit toggled).\n");
> +               uvc_dbg(stream->dev, FRAME,
> +                       "Frame complete (FID bit toggled)\n");
>                 buf->state = UVC_BUF_STATE_READY;
>                 return -EAGAIN;
>         }
> @@ -1147,8 +1147,8 @@ static void uvc_video_decode_data(struct uvc_urb 
> *uvc_urb,
>
>         /* Complete the current frame if the buffer size was exceeded. */
>         if (len > maxlen) {
> -               uvc_trace(uvc_urb->stream->dev, UVC_TRACE_FRAME,
> -                         "Frame complete (overflow).\n");
> +               uvc_dbg(uvc_urb->stream->dev, FRAME,
> +                       "Frame complete (overflow)\n");
>                 buf->error = 1;
>                 buf->state = UVC_BUF_STATE_READY;
>         }
> @@ -1161,11 +1161,9 @@ static void uvc_video_decode_end(struct uvc_streaming 
> *stream,
>  {
>         /* Mark the buffer as done if the EOF marker is set. */
>         if (data[1] & UVC_STREAM_EOF && buf->bytesused != 0) {
> -               uvc_trace(stream->dev, UVC_TRACE_FRAME,
> -                         "Frame complete (EOF found).\n");
> +               uvc_dbg(stream->dev, FRAME, "Frame complete (EOF found)\n");
>                 if (data[0] == len)
> -                       uvc_trace(stream->dev, UVC_TRACE_FRAME,
> -                                 "EOF in empty payload.\n");
> +                       uvc_dbg(stream->dev, FRAME, "EOF in empty payload\n");
>                 buf->state = UVC_BUF_STATE_READY;
>                 if (stream->dev->quirks & UVC_QUIRK_STREAM_NO_FID)
>                         stream->last_fid ^= UVC_STREAM_FID;
> @@ -1281,13 +1279,13 @@ static void uvc_video_decode_meta(struct 
> uvc_streaming *stream,
>         memcpy(&meta->length, mem, length);
>         meta_buf->bytesused += length + sizeof(meta->ns) + sizeof(meta->sof);
>
> -       uvc_trace(stream->dev, UVC_TRACE_FRAME,
> -                 "%s(): t-sys %lluns, SOF %u, len %u, flags 0x%x, PTS %u, 
> STC %u frame SOF %u\n",
> -                 __func__, ktime_to_ns(time), meta->sof, meta->length,
> -                 meta->flags,
> -                 has_pts ? *(u32 *)meta->buf : 0,
> -                 has_scr ? *(u32 *)scr : 0,
> -                 has_scr ? *(u32 *)(scr + 4) & 0x7ff : 0);
> +       uvc_dbg(stream->dev, FRAME,
> +               "%s(): t-sys %lluns, SOF %u, len %u, flags 0x%x, PTS %u, STC 
> %u frame SOF %u\n",
> +               __func__, ktime_to_ns(time), meta->sof, meta->length,
> +               meta->flags,
> +               has_pts ? *(u32 *)meta->buf : 0,
> +               has_scr ? *(u32 *)scr : 0,
> +               has_scr ? *(u32 *)(scr + 4) & 0x7ff : 0);
>  }
>
>  /* ------------------------------------------------------------------------
> @@ -1341,9 +1339,9 @@ static void uvc_video_decode_isoc(struct uvc_urb 
> *uvc_urb,
>
>         for (i = 0; i < urb->number_of_packets; ++i) {
>                 if (urb->iso_frame_desc[i].status < 0) {
> -                       uvc_trace(stream->dev, UVC_TRACE_FRAME,
> -                                 "USB isochronous frame lost (%d).\n",
> -                                 urb->iso_frame_desc[i].status);
> +                       uvc_dbg(stream->dev, FRAME,
> +                               "USB isochronous frame lost (%d)\n",
> +                               urb->iso_frame_desc[i].status);
>                         /* Mark the buffer as faulty. */
>                         if (buf != NULL)
>                                 buf->error = 1;
> @@ -1631,16 +1629,16 @@ static int uvc_alloc_urb_buffers(struct uvc_streaming 
> *stream,
>                 }
>
>                 if (i == UVC_URBS) {
> -                       uvc_trace(stream->dev, UVC_TRACE_VIDEO,
> -                                 "Allocated %u URB buffers of %ux%u bytes 
> each.\n",
> -                                 UVC_URBS, npackets, psize);
> +                       uvc_dbg(stream->dev, VIDEO,
> +                               "Allocated %u URB buffers of %ux%u bytes 
> each\n",
> +                               UVC_URBS, npackets, psize);
>                         return npackets;
>                 }
>         }
>
> -       uvc_trace(stream->dev, UVC_TRACE_VIDEO,
> -                 "Failed to allocate URB buffers (%u bytes per packet).\n",
> -                 psize);
> +       uvc_dbg(stream->dev, VIDEO,
> +               "Failed to allocate URB buffers (%u bytes per packet)\n",
> +               psize);
>         return 0;
>  }
>
> @@ -1839,13 +1837,13 @@ static int uvc_video_start_transfer(struct 
> uvc_streaming *stream,
>                 bandwidth = stream->ctrl.dwMaxPayloadTransferSize;
>
>                 if (bandwidth == 0) {
> -                       uvc_trace(stream->dev, UVC_TRACE_VIDEO,
> -                                 "Device requested null bandwidth, 
> defaulting to lowest.\n");
> +                       uvc_dbg(stream->dev, VIDEO,
> +                               "Device requested null bandwidth, defaulting 
> to lowest\n");
>                         bandwidth = 1;
>                 } else {
> -                       uvc_trace(stream->dev, UVC_TRACE_VIDEO,
> -                                 "Device requested %u B/frame bandwidth.\n",
> -                                 bandwidth);
> +                       uvc_dbg(stream->dev, VIDEO,
> +                               "Device requested %u B/frame bandwidth\n",
> +                               bandwidth);
>                 }
>
>                 for (i = 0; i < intf->num_altsetting; ++i) {
> @@ -1868,14 +1866,14 @@ static int uvc_video_start_transfer(struct 
> uvc_streaming *stream,
>                 }
>
>                 if (best_ep == NULL) {
> -                       uvc_trace(stream->dev, UVC_TRACE_VIDEO,
> -                                 "No fast enough alt setting for requested 
> bandwidth.\n");
> +                       uvc_dbg(stream->dev, VIDEO,
> +                               "No fast enough alt setting for requested 
> bandwidth\n");
>                         return -EIO;
>                 }
>
> -               uvc_trace(stream->dev, UVC_TRACE_VIDEO,
> -                         "Selecting alternate setting %u (%u B/frame 
> bandwidth).\n",
> -                         altsetting, best_psize);
> +               uvc_dbg(stream->dev, VIDEO,
> +                       "Selecting alternate setting %u (%u B/frame 
> bandwidth)\n",
> +                       altsetting, best_psize);
>
>                 ret = usb_set_interface(stream->dev->udev, intfnum, 
> altsetting);
>                 if (ret < 0)
> diff --git a/drivers/media/usb/uvc/uvcvideo.h 
> b/drivers/media/usb/uvc/uvcvideo.h
> index 63f7e88c5713..1ca16c95ba25 100644
> --- a/drivers/media/usb/uvc/uvcvideo.h
> +++ b/drivers/media/usb/uvc/uvcvideo.h
> @@ -731,18 +731,18 @@ struct uvc_driver {
>   * Debugging, printing and logging
>   */
>
> -#define UVC_TRACE_PROBE                (1 << 0)
> -#define UVC_TRACE_DESCR                (1 << 1)
> -#define UVC_TRACE_CONTROL      (1 << 2)
> -#define UVC_TRACE_FORMAT       (1 << 3)
> -#define UVC_TRACE_CAPTURE      (1 << 4)
> -#define UVC_TRACE_CALLS                (1 << 5)
> -#define UVC_TRACE_FRAME                (1 << 7)
> -#define UVC_TRACE_SUSPEND      (1 << 8)
> -#define UVC_TRACE_STATUS       (1 << 9)
> -#define UVC_TRACE_VIDEO                (1 << 10)
> -#define UVC_TRACE_STATS                (1 << 11)
> -#define UVC_TRACE_CLOCK                (1 << 12)
> +#define UVC_DBG_PROBE          (1 << 0)
> +#define UVC_DBG_DESCR          (1 << 1)
> +#define UVC_DBG_CONTROL                (1 << 2)
> +#define UVC_DBG_FORMAT         (1 << 3)
> +#define UVC_DBG_CAPTURE                (1 << 4)
> +#define UVC_DBG_CALLS          (1 << 5)
> +#define UVC_DBG_FRAME          (1 << 7)
> +#define UVC_DBG_SUSPEND                (1 << 8)
> +#define UVC_DBG_STATUS         (1 << 9)
> +#define UVC_DBG_VIDEO          (1 << 10)
> +#define UVC_DBG_STATS          (1 << 11)
> +#define UVC_DBG_CLOCK          (1 << 12)
>
>  #define UVC_WARN_MINMAX                0
>  #define UVC_WARN_PROBE_DEF     1
> @@ -750,20 +750,20 @@ struct uvc_driver {
>
>  extern unsigned int uvc_clock_param;
>  extern unsigned int uvc_no_drop_param;
> -extern unsigned int uvc_trace_param;
> +extern unsigned int uvc_dbg_param;
>  extern unsigned int uvc_timeout_param;
>  extern unsigned int uvc_hw_timestamps_param;
>
> -#define uvc_trace(_dev, flag, fmt, ...)                                      
>   \
> +#define uvc_dbg(_dev, flag, fmt, ...)                                  \
>  do {                                                                   \
> -       if (uvc_trace_param & flag)                                     \
> +       if (uvc_dbg_param & UVC_DBG_##flag)                             \
>                 dev_printk(KERN_DEBUG, &(_dev)->udev->dev, fmt,         \
>                            ##__VA_ARGS__);                              \
>  } while (0)
>
> -#define uvc_trace_cont(flag, fmt, ...)                                 \
> +#define uvc_dbg_cont(flag, fmt, ...)                                   \
>  do {                                                                   \
> -       if (uvc_trace_param & flag)                                     \
> +       if (uvc_dbg_param & UVC_DBG_##flag)                             \
>                 pr_cont(fmt, ##__VA_ARGS__);                            \
>  } while (0)
>
>


-- 
Ricardo Ribalda

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