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Subject[PATCH 4.14 017/164] can: esd_usb2: cancel urb on -EPIPE and -EPROTO
4.14-stable review patch.  If anyone has any objections, please let me know.


From: Martin Kelly <>

commit 7a31ced3de06e9878e4f9c3abe8f87d9344d8144 upstream.

In mcba_usb, we have observed that when you unplug the device, the driver will
endlessly resubmit failing URBs, which can cause CPU stalls. This issue
is fixed in mcba_usb by catching the codes seen on device disconnect

This driver also resubmits in the case of -EPIPE and -EPROTO, so fix it
in the same way.

Signed-off-by: Martin Kelly <>
Signed-off-by: Marc Kleine-Budde <>
Signed-off-by: Greg Kroah-Hartman <>

drivers/net/can/usb/esd_usb2.c | 2 ++
1 file changed, 2 insertions(+)

--- a/drivers/net/can/usb/esd_usb2.c
+++ b/drivers/net/can/usb/esd_usb2.c
@@ -393,6 +393,8 @@ static void esd_usb2_read_bulk_callback(

case -ENOENT:
+ case -EPIPE:
+ case -EPROTO:

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