From: Martin Kelly Date: Tue, 5 Dec 2017 19:15:47 +0000 (-0800) Subject: can: ems_usb: cancel urb on -EPIPE and -EPROTO X-Git-Tag: v4.15-rc3~8^2^2~4 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=bd352e1adfe0d02d3ea7c8e3fb19183dc317e679;p=users%2Fdwmw2%2Flinux.git can: ems_usb: cancel urb on -EPIPE and -EPROTO 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 Cc: linux-stable Signed-off-by: Marc Kleine-Budde --- diff --git a/drivers/net/can/usb/ems_usb.c b/drivers/net/can/usb/ems_usb.c index b3d02759c226b..b003582974246 100644 --- a/drivers/net/can/usb/ems_usb.c +++ b/drivers/net/can/usb/ems_usb.c @@ -288,6 +288,8 @@ static void ems_usb_read_interrupt_callback(struct urb *urb) case -ECONNRESET: /* unlink */ case -ENOENT: + case -EPIPE: + case -EPROTO: case -ESHUTDOWN: return;