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[media] gspca: only set gspca->int_urb if submitting it succeeds 

Currently alloc_and_submit_int_urb() is setting gspca->int_urb
as soon as the allocation has succeeded, but if the subsequent
submit fails, the urb gets destroyed. And then later will
get destroyed again in gspca_input_destroy_urb() because
gspca->int_urb is set, leading to a double free.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans de Goede 2010-10-26 05:16:32 -03:00 committed by Mauro Carvalho Chehab
parent 314b3e0881
commit 2661da47da
1 changed files with 1 additions and 1 deletions
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2
drivers/media/video/gspca/gspca.c
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@ -224,12 +224,12 @@ static int alloc_and_submit_int_urb(struct gspca_dev *gspca_dev,
buffer, buffer_len,
int_irq, (void *)gspca_dev, interval);
urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
gspca_dev->int_urb = urb;
ret = usb_submit_urb(urb, GFP_KERNEL);
if (ret < 0) {
PDEBUG(D_ERR, "submit int URB failed with error %i", ret);
goto error_submit;
}
gspca_dev->int_urb = urb;
return ret;
error_submit: