[PATCH 3.10 040/104] b43legacy: Fix unload oops if firmware is not available

From: Greg Kroah-Hartman
Date: Tue Feb 04 2014 - 17:56:01 EST

3.10-stable review patch. If anyone has any objections, please let me know.


From: Larry Finger <Larry.Finger@xxxxxxxxxxxx>

commit 452028665312672c6ba9e16a19248ee00ead9400 upstream.

The asyncronous firmware load uses a completion struct to hold firmware
processing until the user-space routines are up and running. There is.
however, a problem in that the waiter is nevered canceled during teardown.
As a result, unloading the driver when firmware is not available causes an oops.

Signed-off-by: Larry Finger <Larry.Finger@xxxxxxxxxxxx>
Signed-off-by: John W. Linville <linville@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

drivers/net/wireless/b43legacy/main.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/net/wireless/b43legacy/main.c
+++ b/drivers/net/wireless/b43legacy/main.c
@@ -3919,6 +3919,7 @@ static void b43legacy_remove(struct ssb_
* as the ieee80211 unreg will destroy the workqueue. */
+ complete(&wldev->fw_load_complete);

if (!wldev->fw.ucode)

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