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usb: check return value of submit_{control, bulk}_msg 

Return values of submit_{control,bulk}_msg() functions
should be checked to detect possible error.

Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
This commit is contained in:
Ilya Yanok 2012-07-15 04:43:51 +00:00 committed by Marek Vasut
parent 80ab414afd
commit fd06028df8
1 changed files with 4 additions and 2 deletions
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6
common/usb.c
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@ -188,7 +188,8 @@ int usb_control_msg(struct usb_device *dev, unsigned int pipe,
request, requesttype, value, index, size);
dev->status = USB_ST_NOT_PROC; /*not yet processed */
submit_control_msg(dev, pipe, data, size, setup_packet);
if (submit_control_msg(dev, pipe, data, size, setup_packet) < 0)
return -1;
if (timeout == 0)
return (int)size;
@ -220,7 +221,8 @@ int usb_bulk_msg(struct usb_device *dev, unsigned int pipe,
if (len < 0)
return -1;
dev->status = USB_ST_NOT_PROC; /*not yet processed */
submit_bulk_msg(dev, pipe, data, len);
if (submit_bulk_msg(dev, pipe, data, len) < 0)
return -1;
while (timeout--) {
if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
break;