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. Link: https://lore.kernel.org/all/20230718-gs_usb-cleanups-v1-9-c3b9154ec605@xxxxxxxxxxxxxx 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
