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usb: pch_udc: unlock on allocation failure 

There was an unlock missing on the error path.

Also I did a small cleanup by changing ep->dev->lock for just dev->lock.
They're the same lock, but dev->lock is shorter and that's how it is
used for the spin_unlock_irqrestore() call.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Dan Carpenter 2011-03-20 14:09:50 +03:00 committed by Greg Kroah-Hartman
parent 9ab7927bb8
commit 485707116b
1 changed files with 5 additions and 3 deletions
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8
drivers/usb/gadget/pch_udc.c
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@ -1608,7 +1608,7 @@ static int pch_udc_pcd_queue(struct usb_ep *usbep, struct usb_request *usbreq,
return -EINVAL;
if (!dev->driver || (dev->gadget.speed == USB_SPEED_UNKNOWN))
return -ESHUTDOWN;
spin_lock_irqsave(&ep->dev->lock, iflags);
spin_lock_irqsave(&dev->lock, iflags);
/* map the buffer for dma */
if (usbreq->length &&
((usbreq->dma == DMA_ADDR_INVALID) || !usbreq->dma)) {
@ -1625,8 +1625,10 @@ static int pch_udc_pcd_queue(struct usb_ep *usbep, struct usb_request *usbreq,
DMA_FROM_DEVICE);
} else {
req->buf = kzalloc(usbreq->length, GFP_ATOMIC);
if (!req->buf)
return -ENOMEM;
if (!req->buf) {
retval = -ENOMEM;
goto probe_end;
}
if (ep->in) {
memcpy(req->buf, usbreq->buf, usbreq->length);
req->dma = dma_map_single(&dev->pdev->dev,