From: Christian Lamparter <chunkeey@googlemail.com>
To: linux-wireless@vger.kernel.org
Cc: "John W. Linville" <linville@tuxdriver.com>
Subject: [PATCH for-2.6.37] carl9170: fix scheduling while atomic
Date: Sat, 23 Oct 2010 15:02:02 +0200 [thread overview]
Message-ID: <201010231502.02582.chunkeey@googlemail.com> (raw)
This patch fixes the following mishap:
BUG: scheduling while atomic: wpa_supplicant/4164/0x00000002
Modules linked in: carl9170 mac80211 [...]
Pid: 4164, comm: wpa_supplicant Not tainted 2.6.36-wl+ #119
Call Trace:
[<c13779a9>] ? schedule+0x349/0x4c0
[<c13780d6>] ? schedule_timeout+0x106/0x1e0
[<c1037f50>] ? process_timeout+0x0/0x10
[<c1377e8d>] ? wait_for_common+0x9d/0x140
[<c1029110>] ? default_wake_function+0x0/0x10
[<f80c6080>] ? carl9170_exec_cmd+0xf0/0x250 [carl9170]
[<f80c695e>] ? carl9170_set_mac_reg+0x5e/0x70 [carl9170]
[<f80c3f76>] ? carl9170_op_add_interface+0x176/0x310 [carl9170]
[...]
rcu_read_unlock() call was erroneously placed after the
sync. function carl9170_mod_virtual_mac.
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
---
diff --git a/drivers/net/wireless/ath/carl9170/main.c b/drivers/net/wireless/ath/carl9170/main.c
index 4e96910..d56f440 100644
--- a/drivers/net/wireless/ath/carl9170/main.c
+++ b/drivers/net/wireless/ath/carl9170/main.c
@@ -639,8 +639,8 @@ init:
if (err)
goto unlock;
} else {
- err = carl9170_mod_virtual_mac(ar, vif_id, vif->addr);
rcu_read_unlock();
+ err = carl9170_mod_virtual_mac(ar, vif_id, vif->addr);
if (err)
goto unlock;
reply other threads:[~2010-10-23 13:02 UTC|newest]
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