We've seen device access fail with -EPROTO when the device has been recently disconnected and before the USB core had a chance to handle the disconnect hub event. It doesn't make sense to continue on trying to enable host access when the adapter is gone. Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx> --- drivers/net/usb/asix_common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/usb/asix_common.c b/drivers/net/usb/asix_common.c index be1e103b7a95..28b31e4da020 100644 --- a/drivers/net/usb/asix_common.c +++ b/drivers/net/usb/asix_common.c @@ -96,7 +96,7 @@ static int asix_check_host_enable(struct usbnet *dev, int in_pm) for (i = 0; i < AX_HOST_EN_RETRIES; ++i) { ret = asix_set_sw_mii(dev, in_pm); - if (ret == -ENODEV || ret == -ETIMEDOUT) + if (ret == -ENODEV || ret == -ETIMEDOUT || ret == -EPROTO) break; usleep_range(1000, 1100); ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG, -- 2.30.2