From dd12eb784eddfefabb27bdab05fdf1c29f55b404 Mon Sep 17 00:00:00 2001 From: Martin Kelly Date: Tue, 5 Dec 2017 11:15:47 -0800 Subject: [PATCH] can: ems_usb: cancel urb on -EPIPE and -EPROTO commit bd352e1adfe0d02d3ea7c8e3fb19183dc317e679 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: Ben Hutchings --- drivers/net/can/usb/ems_usb.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/can/usb/ems_usb.c b/drivers/net/can/usb/ems_usb.c index 3b8c4da11f3e5..96f500c4a836e 100644 --- a/drivers/net/can/usb/ems_usb.c +++ b/drivers/net/can/usb/ems_usb.c @@ -292,6 +292,8 @@ static void ems_usb_read_interrupt_callback(struct urb *urb) case -ECONNRESET: /* unlink */ case -ENOENT: + case -EPIPE: + case -EPROTO: case -ESHUTDOWN: return; -- 2.47.2