diff options
| author | Marcin Slusarz <marcin.slusarz@gmail.com> | 2008-06-08 13:13:06 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2008-06-09 15:53:38 -0400 |
| commit | b6b16196b064bbff83e8161359f8b73465d4aa36 (patch) | |
| tree | 856dace79bb6551115fae6fd10c03b8d4ca0a17c | |
| parent | 585c5434f0e02ff0ffc567ec223af61e2d8e2e88 (diff) | |
| download | blackbird-op-linux-b6b16196b064bbff83e8161359f8b73465d4aa36.tar.gz blackbird-op-linux-b6b16196b064bbff83e8161359f8b73465d4aa36.zip | |
iwlwifi: fix oops in iwl3945_led_brightness_set
fix race between:
ieee80211_open->ieee80211_led_radio->led_trigger_event->led_set_brightness->iwl3945_led_brightness_set
(which assumes that "led->priv" is not NULL)
and
iwl3945_pci_probe->iwl3945_setup_deferred_work->(...)->iwl3945_bg_alive_start->iwl3945_alive_start->iwl3945_led_register->iwl3945_led_register_led
which sets priv field in struct iwl3945_led
after
led->led_dev.brightness_set = iwl3945_led_brightness_set;
(...)
led_classdev_register(device, &led->led_dev);
http://kerneloops.org/guilty.php?guilty=iwl3945_led_brightness_set&version=2.6.25-release&start=1671168&end=1703935&class=oops
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: Zhu Yi <yi.zhu@intel.com>
Cc: Reinette Chatre <reinette.chatre@intel.com>
Cc: Tomas Winkler <tomas.winkler@intel.com>
Cc: linux-wireless@vger.kernel.org
Cc: ipw3945-devel@lists.sourceforge.net
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-3945-led.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-led.c b/drivers/net/wireless/iwlwifi/iwl-3945-led.c index d200d08fb086..8b1528e52d43 100644 --- a/drivers/net/wireless/iwlwifi/iwl-3945-led.c +++ b/drivers/net/wireless/iwlwifi/iwl-3945-led.c @@ -229,14 +229,15 @@ static int iwl3945_led_register_led(struct iwl3945_priv *priv, led->led_dev.brightness_set = iwl3945_led_brightness_set; led->led_dev.default_trigger = trigger; + led->priv = priv; + led->type = type; + ret = led_classdev_register(device, &led->led_dev); if (ret) { IWL_ERROR("Error: failed to register led handler.\n"); return ret; } - led->priv = priv; - led->type = type; led->registered = 1; if (set_led && led->led_on) |
