usbatm: Detect usb device shutdown and ignore failed urbs.

Detect usb device shutdown and ignore failed urbs.
This happens when the driver is unloaded or the device is unplugged.

---
I'm not sure what other urb statuses should be ignored, and the warning message doesn't need to be shown when the module is unloaded or the device is removed.

drivers/usb/atm/usbatm.c | 3 +++

1 files changed, 3 insertions(+), 0 deletions(-)

index d0f1976..6b31175 100644
@@ -274,6 +274,9 @@ static void usbatm_complete(struct urb *urb)

			(!(channel->usbatm->flags & UDSL_IGNORE_EILSEQ) ||
			 urb->status != -EILSEQ ))
	{
+		if (urb->status == -ESHUTDOWN)
+			return;
+
		if (printk_ratelimit())
			atm_warn(channel->usbatm, "%s: urb 0x%p failed (%d)!\n",
				__func__, urb, urb->status);

1.5.0.1

-- 
Simon Arlott