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authorMartin Kelly <mkelly@xevo.com>2017-12-05 11:15:50 -0800
committerMarc Kleine-Budde <mkl@pengutronix.de>2017-12-08 10:45:11 +0100
commit12147edc434c9e4c7c2f5fee2e5519b2e5ac34ce (patch)
treea72c9a35cba12f852ee6b4d8c0538b4909364dd3 /drivers
parent6aa8d5945502baf4687d80de59b7ac865e9e666b (diff)
downloadlinux-12147edc434c9e4c7c2f5fee2e5519b2e5ac34ce.tar.bz2
can: usb_8dev: 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 <mkelly@xevo.com> Cc: linux-stable <stable@vger.kernel.org> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/can/usb/usb_8dev.c2
1 files changed, 2 insertions, 0 deletions
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;