From 67464fbca35ccfbe2f5e957ff2a31334390b7947 Mon Sep 17 00:00:00 2001 From: Martin Kelly Date: Tue, 5 Dec 2017 11:15:50 -0800 Subject: [PATCH] can: usb_8dev: cancel urb on -EPIPE and -EPROTO commit 12147edc434c9e4c7c2f5fee2e5519b2e5ac34ce 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 (-EPIPE and -EPROTO). 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/usb_8dev.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/can/usb/usb_8dev.c b/drivers/net/can/usb/usb_8dev.c index d000cb62d6ae..27861c417c94 100644 --- a/drivers/net/can/usb/usb_8dev.c +++ b/drivers/net/can/usb/usb_8dev.c @@ -524,6 +524,8 @@ static void usb_8dev_read_bulk_callback(struct urb *urb) break; case -ENOENT: + case -EPIPE: + case -EPROTO: case -ESHUTDOWN: return; -- 2.20.1