When the USB device is unplugged, gs_can_close() (which implements the
struct net_device_ops::ndo_stop callback) is called. In this function
an attempt is made to shut down the USB device with a USB control
message. For disconnected devices this will fail and a warning message
is printed.
Silence the driver by removing the printout of the error message if
the reset command fails.
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
---
drivers/net/can/usb/gs_usb.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/net/can/usb/gs_usb.c b/drivers/net/can/usb/gs_usb.c
index a5cab6a07002..7718f6a4367e 100644
--- a/drivers/net/can/usb/gs_usb.c
+++ b/drivers/net/can/usb/gs_usb.c
@@ -1029,9 +1029,7 @@ static int gs_can_close(struct net_device *netdev)
dev->can.state = CAN_STATE_STOPPED;
/* reset the device */
- rc = gs_cmd_reset(dev);
- if (rc < 0)
- netdev_warn(netdev, "Couldn't shutdown device (err=%d)", rc);
+ gs_cmd_reset(dev);
/* reset tx contexts */
for (rc = 0; rc < GS_MAX_TX_URBS; rc++) {
--
2.40.1
