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| author | Stanislaw Gruszka <sgruszka@redhat.com> | 2012-05-16 11:06:21 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-06-08 13:43:57 -0400 |
| commit | 0fde0a8cfd0ede7f310d6a681c8e5a7cb3e32406 (patch) | |
| tree | ce4707cdb1cd648fc01685ad34dfe460e06345b2 | |
| parent | aac495a8002bbf20e879572c6cf0789ab2ffb32b (diff) | |
| download | linux-0fde0a8cfd0ede7f310d6a681c8e5a7cb3e32406.tar.gz linux-0fde0a8cfd0ede7f310d6a681c8e5a7cb3e32406.tar.bz2 linux-0fde0a8cfd0ede7f310d6a681c8e5a7cb3e32406.zip | |
rtl8187: ->brightness_set can not sleep
Fix:
BUG: sleeping function called from invalid context at kernel/workqueue.c:2547
in_atomic(): 1, irqs_disabled(): 0, pid: 629, name: wpa_supplicant
2 locks held by wpa_supplicant/629:
#0: (rtnl_mutex){+.+.+.}, at: [<c08b2b84>] rtnl_lock+0x14/0x20
#1: (&trigger->leddev_list_lock){.+.?..}, at: [<c0867f41>] led_trigger_event+0x21/0x80
Pid: 629, comm: wpa_supplicant Not tainted 3.3.0-0.rc3.git5.1.fc17.i686
Call Trace:
[<c046a9f6>] __might_sleep+0x126/0x1d0
[<c0457d6c>] wait_on_work+0x2c/0x1d0
[<c045a09a>] __cancel_work_timer+0x6a/0x120
[<c045a160>] cancel_delayed_work_sync+0x10/0x20
[<f7dd3c22>] rtl8187_led_brightness_set+0x82/0xf0 [rtl8187]
[<c0867f7c>] led_trigger_event+0x5c/0x80
[<f7ff5e6d>] ieee80211_led_radio+0x1d/0x40 [mac80211]
[<f7ff3583>] ieee80211_stop_device+0x13/0x230 [mac80211]
Removing _sync is ok, because if led_on work is currently running
it will be finished before led_off work start to perform, since
they are always queued on the same mac80211 local->workqueue.
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=795176
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Acked-by: Hin-Tak Leung <htl10@users.sourceforge.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/rtl818x/rtl8187/leds.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/rtl818x/rtl8187/leds.c b/drivers/net/wireless/rtl818x/rtl8187/leds.c index 2e0de2f5f0f9..c2d5b495c179 100644 --- a/drivers/net/wireless/rtl818x/rtl8187/leds.c +++ b/drivers/net/wireless/rtl818x/rtl8187/leds.c @@ -117,7 +117,7 @@ static void rtl8187_led_brightness_set(struct led_classdev *led_dev, radio_on = true; } else if (radio_on) { radio_on = false; - cancel_delayed_work_sync(&priv->led_on); + cancel_delayed_work(&priv->led_on); ieee80211_queue_delayed_work(hw, &priv->led_off, 0); } } else if (radio_on) { |