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Subject[patch 60/62] b43legacy: Release mutex in error handling code
2.6.26 -stable review patch.  If anyone has any objections, please let
us know.

------------------
From: Julia Lawall <julia@diku.dk>
commit 4104863fb4a724723d1d5f3cba9d3c5084087e45 upstream

The mutex is released on a successful return, so it would seem that it
should be released on an error return as well.

The semantic patch finds this problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
expression l;
@@

mutex_lock(l);
.. when != mutex_unlock(l)
when any
when strict
(
if (...) { ... when != mutex_unlock(l)
+ mutex_unlock(l);
return ...;
}
mutex_unlock(l);
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/net/wireless/b43legacy/main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/wireless/b43legacy/main.c
+++ b/drivers/net/wireless/b43legacy/main.c
@@ -3862,10 +3862,10 @@ static int b43legacy_resume(struct ssb_d
goto out;
}
}
- mutex_unlock(&wl->mutex);

b43legacydbg(wl, "Device resumed.\n");
out:
+ mutex_unlock(&wl->mutex);
return err;
}

--


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