If suspend callback fails in system sleep context, usb core will ignore the failure and let system sleep go ahead further, so this patch doesn't recover device under this situation. Also add comments on this case. Acked-by: David S. Miller <davem@xxxxxxxxxxxxx> Cc: Steve Glendinning <steve.glendinning@xxxxxxxxxxx> Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxxxxx> --- drivers/net/usb/smsc75xx.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c index 9abe517..21b607a 100644 --- a/drivers/net/usb/smsc75xx.c +++ b/drivers/net/usb/smsc75xx.c @@ -2011,7 +2011,11 @@ static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message) ret = smsc75xx_enter_suspend0(dev); done: - if (ret) + /* + * TODO: resume() might need to handle the suspend failure + * in system sleep + */ + if (ret && PMSG_IS_AUTO(message)) usbnet_resume(intf); return ret; } -- 1.7.9.5 -- 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
