David Miller [mailto:davem@xxxxxxxxxxxxx] > Sent: Saturday, December 20, 2014 4:44 AM [...] > > Don't submit the rx if the device is unplugged, linking down, > > or stopped. > ... > > @@ -1789,6 +1789,11 @@ int r8152_submit_rx(struct r8152 > *tp, struct rx_agg *agg, gfp_t mem_flags) > > { > > int ret; > > > > + /* The rx would be stopped, so skip submitting */ > > + if (test_bit(RTL8152_UNPLUG, &tp->flags) || > > + !test_bit(WORK_ENABLE, &tp->flags) || !(tp->speed & LINK_STATUS)) > > + return 0; > > + > > I think netif_carrier_off() should always be true in all three of those > situations, and would be a much simpler test than what you've coded > here. When the device is unplugged or stopped, the linking status may be true, so I add additional checks to avoid the submission. Besides, in set_carrier() I set netif_carrier_on() after ops.enable() to avoid any transmission before I finish starting the tx/rx. tp->rtl_ops.enable(tp); set_bit(RTL8152_SET_RX_MODE, &tp->flags); netif_carrier_on(netdev); However, the r8152_submit_rx() would be called in ops.enable(), and the check of netif_carrier_ok() would be always false. That is why I use tp->speed, not netif_carrier_ok(), to check the linking stauts. Best Regards, Hayes -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
