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usbnet: smsc75xx: don't recover device if suspend fails in system sleep

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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@davemloft.net>
Cc: Steve Glendinning <steve.glendinning@shawell.net>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ming Lei 2013-03-15 12:08:59 +08:00 committed by Greg Kroah-Hartman
parent 0d41be53f0
commit 5410a473fb
1 changed files with 5 additions and 1 deletions
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6
drivers/net/usb/smsc75xx.c
View file

@ -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;
}