rt2x00: usb: fix reset resume

Patch fixes warnings like below happened on resume:

WARNING: at net/mac80211/driver-ops.h:12 check_sdata_in_driver+0x32/0x34()

Problem is that in __ieee80211_susped() we remove sdata (i.e wlan0
interface) and then during resume we call usb_unbind_interface() ->
ieee80211_unregister_hw() with sdata removed.

Patch fixes problem by adding .reset_resume calback, hence we do not
unbind usb device on resume. This callback can be the same as normal
.resume callback, sice we do all needed initalization during interface
start, which is performed on resume [ ieee80211_resume() ->
ieee80211_reconfig() -> rt2x00mac_start() -> rt2x00lib_start ].

Resolves:
https://bugzilla.kernel.org/show_bug.cgi?id=48041

Reported-by: David Herrmann <dh.herrmann@googlemail.com>
Reported-and-tested-by: Stephen Boyd <bebarino@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Stanislaw Gruszka 2012-10-16 14:34:12 +02:00 committed by John W. Linville
parent 0c7e92075f
commit 761ce8c41e
3 changed files with 3 additions and 0 deletions

View file

@ -1988,6 +1988,7 @@ static struct usb_driver rt2500usb_driver = {
.disconnect = rt2x00usb_disconnect,
.suspend = rt2x00usb_suspend,
.resume = rt2x00usb_resume,
.reset_resume = rt2x00usb_resume,
.disable_hub_initiated_lpm = 1,
};

View file

@ -1282,6 +1282,7 @@ static struct usb_driver rt2800usb_driver = {
.disconnect = rt2x00usb_disconnect,
.suspend = rt2x00usb_suspend,
.resume = rt2x00usb_resume,
.reset_resume = rt2x00usb_resume,
.disable_hub_initiated_lpm = 1,
};

View file

@ -2535,6 +2535,7 @@ static struct usb_driver rt73usb_driver = {
.disconnect = rt2x00usb_disconnect,
.suspend = rt2x00usb_suspend,
.resume = rt2x00usb_resume,
.reset_resume = rt2x00usb_resume,
.disable_hub_initiated_lpm = 1,
};