ChangeSet 1.2181.4.68, 2005/03/24 15:30:24-08:00, [EMAIL PROTECTED]
[PATCH] USB: gadget zero sparse fixes [5/5]
Some "sparse" updates for the Gadget Zero driver, preparing it to
expect SETUP packets to be little endian.
Signed-off-by: David Brownell <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
drivers/usb/gadget/zero.c | 48 +++++++++++++++++++++++-----------------------
1 files changed, 25 insertions(+), 23 deletions(-)
diff -Nru a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c
--- a/drivers/usb/gadget/zero.c 2005-03-30 13:33:04 -08:00
+++ b/drivers/usb/gadget/zero.c 2005-03-30 13:33:04 -08:00
@@ -919,6 +919,9 @@
struct zero_dev *dev = get_gadget_data (gadget);
struct usb_request *req = dev->req;
int value = -EOPNOTSUPP;
+ u16 w_index = ctrl->wIndex;
+ u16 w_value = ctrl->wValue;
+ u16 w_length = ctrl->wLength;
/* usually this stores reply data in the pre-allocated ep0 buffer,
* but config change events will reconfigure hardware.
@@ -929,17 +932,17 @@
case USB_REQ_GET_DESCRIPTOR:
if (ctrl->bRequestType != USB_DIR_IN)
goto unknown;
- switch (ctrl->wValue >> 8) {
+ switch (w_value >> 8) {
case USB_DT_DEVICE:
- value = min (ctrl->wLength, (u16) sizeof device_desc);
+ value = min (w_length, (u16) sizeof device_desc);
memcpy (req->buf, &device_desc, value);
break;
#ifdef CONFIG_USB_GADGET_DUALSPEED
case USB_DT_DEVICE_QUALIFIER:
if (!gadget->is_dualspeed)
break;
- value = min (ctrl->wLength, (u16) sizeof dev_qualifier);
+ value = min (w_length, (u16) sizeof dev_qualifier);
memcpy (req->buf, &dev_qualifier, value);
break;
@@ -950,10 +953,10 @@
#endif /* CONFIG_USB_GADGET_DUALSPEED */
case USB_DT_CONFIG:
value = config_buf (gadget, req->buf,
- ctrl->wValue >> 8,
- ctrl->wValue & 0xff);
+ w_value >> 8,
+ w_value & 0xff);
if (value >= 0)
- value = min (ctrl->wLength, (u16) value);
+ value = min (w_length, (u16) value);
break;
case USB_DT_STRING:
@@ -963,9 +966,9 @@
* any UTF-8 characters
*/
value = usb_gadget_get_string (&stringtab,
- ctrl->wValue & 0xff, req->buf);
+ w_value & 0xff, req->buf);
if (value >= 0)
- value = min (ctrl->wLength, (u16) value);
+ value = min (w_length, (u16) value);
break;
}
break;
@@ -981,14 +984,14 @@
else
VDBG (dev, "HNP inactive\n");
spin_lock (&dev->lock);
- value = zero_set_config (dev, ctrl->wValue, GFP_ATOMIC);
+ value = zero_set_config (dev, w_value, GFP_ATOMIC);
spin_unlock (&dev->lock);
break;
case USB_REQ_GET_CONFIGURATION:
if (ctrl->bRequestType != USB_DIR_IN)
goto unknown;
*(u8 *)req->buf = dev->config;
- value = min (ctrl->wLength, (u16) 1);
+ value = min (w_length, (u16) 1);
break;
/* until we add altsetting support, or other interfaces,
@@ -999,7 +1002,7 @@
if (ctrl->bRequestType != USB_RECIP_INTERFACE)
goto unknown;
spin_lock (&dev->lock);
- if (dev->config && ctrl->wIndex == 0 && ctrl->wValue == 0) {
+ if (dev->config && w_index == 0 && w_value == 0) {
u8 config = dev->config;
/* resets interface configuration, forgets about
@@ -1020,12 +1023,12 @@
goto unknown;
if (!dev->config)
break;
- if (ctrl->wIndex != 0) {
+ if (w_index != 0) {
value = -EDOM;
break;
}
*(u8 *)req->buf = 0;
- value = min (ctrl->wLength, (u16) 1);
+ value = min (w_length, (u16) 1);
break;
/*
@@ -1036,23 +1039,23 @@
case 0x5b: /* control WRITE test -- fill the buffer */
if (ctrl->bRequestType != (USB_DIR_OUT|USB_TYPE_VENDOR))
goto unknown;
- if (ctrl->wValue || ctrl->wIndex)
+ if (w_value || w_index)
break;
/* just read that many bytes into the buffer */
- if (ctrl->wLength > USB_BUFSIZ)
+ if (w_length > USB_BUFSIZ)
break;
- value = ctrl->wLength;
+ value = w_length;
break;
case 0x5c: /* control READ test -- return the buffer */
if (ctrl->bRequestType != (USB_DIR_IN|USB_TYPE_VENDOR))
goto unknown;
- if (ctrl->wValue || ctrl->wIndex)
+ if (w_value || w_index)
break;
/* expect those bytes are still in the buffer; send back */
- if (ctrl->wLength > USB_BUFSIZ
- || ctrl->wLength != req->length)
+ if (w_length > USB_BUFSIZ
+ || w_length != req->length)
break;
- value = ctrl->wLength;
+ value = w_length;
break;
default:
@@ -1060,14 +1063,13 @@
VDBG (dev,
"unknown control req%02x.%02x v%04x i%04x l%d\n",
ctrl->bRequestType, ctrl->bRequest,
- ctrl->wValue, ctrl->wIndex, ctrl->wLength);
+ w_value, w_index, w_length);
}
/* respond with data transfer before status phase? */
if (value >= 0) {
req->length = value;
- req->zero = value < ctrl->wLength
- && (value % gadget->ep0->maxpacket) == 0;
+ req->zero = value < w_length;
value = usb_ep_queue (gadget->ep0, req, GFP_ATOMIC);
if (value < 0) {
DBG (dev, "ep_queue --> %d\n", value);
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