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can: mcba_usb: fix device disconnect bug

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commit 1cb35a33a28394fd711bb26ddf3a564f4e9d9125 upstream.

Currently, when you disconnect the device, the driver infinitely
resubmits all URBs, so you see:

Rx URB aborted (-32)

in an infinite loop.

Fix this by catching -EPIPE (what we get in urb->status when the device
disconnects) and not resubmitting.

With this patch, I can plug and unplug many times and the driver
recovers correctly.

Signed-off-by: Martin Kelly <mkelly@xevo.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Martin Kelly 2017-11-27 15:49:16 -08:00 committed by Greg Kroah-Hartman
parent 4dc9c1cfa9
commit ba4eed1bd4
1 changed files with 1 additions and 0 deletions
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1
drivers/net/can/usb/mcba_usb.c
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@ -592,6 +592,7 @@ static void mcba_usb_read_bulk_callback(struct urb *urb)
break;
case -ENOENT:
case -EPIPE:
case -ESHUTDOWN:
return;