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USB: fix the bug that urb enqueue again after kill urb.

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This commit is contained in:
wlf
2014-05-08 14:58:11 +08:00
parent c8801cb2b3
commit e3a736b88c
1 changed files with 11 additions and 3 deletions
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14
drivers/usb/dwc_otg_310/dwc_otg_hcd_linux.c
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@@ -983,11 +983,19 @@ static int urb_enqueue(struct usb_hcd *hcd,
}
#endif
if(atomic_read(&urb->use_count)>1){
if (unlikely(atomic_read(&urb->use_count) > 1)) {
retval = -EPERM;
printk("%s urb %p already in queue, qtd %p, count%d\n",
printk("%s urb %p already in queue, qtd %p, use_count %d\n",
__func__, urb, urb->hcpriv, atomic_read(&urb->use_count));
return retval;
return retval;
}
if (unlikely(atomic_read(&urb->reject))) {
retval = -EPERM;
printk("%s urb %p submissions will fail, urb->reject %d, use_count %d\n",
__func__, urb, atomic_read(&urb->reject), atomic_read(&urb->use_count));
return retval;
}
if ((usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS)