| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.4 15/37] b43legacy: Fix unload oops if firmware is not available | Date | Tue, 4 Feb 2014 13:00:51 -0800 |
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3.4-stable review patch. If anyone has any objections, please let me know.
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From: Larry Finger <Larry.Finger@lwfinger.net>
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@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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 @@ -3915,6 +3915,7 @@ static void b43legacy_remove(struct ssb_ * as the ieee80211 unreg will destroy the workqueue. */ cancel_work_sync(&wldev->restart_work); cancel_work_sync(&wl->firmware_load); + complete(&wldev->fw_load_complete); B43legacy_WARN_ON(!wl); if (!wldev->fw.ucode)
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