On Wed, Nov 04, 2020 at 12:16:58PM +0530, Himadri Pandya wrote:
> The new usb_control_msg_recv() and usb_control_msg_send() nicely wraps
> usb_control_msg() with proper error check. Hence use the wrappers
> instead of calling usb_control_msg() directly
>
> Signed-off-by: Himadri Pandya <himadrispan...@gmail.com>
> ---
> drivers/usb/serial/io_ti.c | 28 ++++++++++------------------
> 1 file changed, 10 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c
> index c327d4cf7928..ab2370b80b3c 100644
> --- a/drivers/usb/serial/io_ti.c
> +++ b/drivers/usb/serial/io_ti.c
> @@ -260,16 +260,12 @@ static int ti_vread_sync(struct usb_device *dev, __u8
> request,
> {
> int status;
>
> - status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
> - (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
> - value, index, data, size, 1000);
> - if (status < 0)
> + status = usb_control_msg_recv(dev, 0, request, USB_TYPE_VENDOR |
> + USB_RECIP_DEVICE | USB_DIR_IN, value,
> + index, data, size, 1000, GFP_KERNEL);
> + if (status)
> return status;
> - if (status != size) {
> - dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote
> %d\n",
> - __func__, size, status);
> - return -ECOMM;
> - }
> +
> return 0;
> }
>
> @@ -278,16 +274,12 @@ static int ti_vsend_sync(struct usb_device *dev, u8
> request, u16 value,
> {
> int status;
>
> - status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
> - (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
> - value, index, data, size, timeout);
> - if (status < 0)
> + status = usb_control_msg_send(dev, 0, request, USB_TYPE_VENDOR |
> + USB_RECIP_DEVICE | USB_DIR_OUT, value,
> + index, data, size, timeout, GFP_KERNEL);
> + if (status)
> return status;
> - if (status != size) {
> - dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote
> %d\n",
> - __func__, size, status);
> - return -ECOMM;
> - }
> +
> return 0;
> }
These helper are only used with DMA-able buffers so this change
introduces an additional redundant allocation and memcpy for every call
for no real gain.
Please drop this one as well.
Johan
