]> git.karo-electronics.de Git - karo-tx-linux.git/commit
IB/mlx4: Fix spinlock order to avoid lockdep warnings
authorJack Morgenstein <jackm@dev.mellanox.co.il>
Tue, 27 Nov 2012 16:24:29 +0000 (16:24 +0000)
committerRoland Dreier <roland@purestorage.com>
Thu, 29 Nov 2012 20:14:45 +0000 (12:14 -0800)
commitceb7decb366591e9b67d70832e07f5d240572a3d
tree5fb1789536cde94d2b616c1fb46f9b5a66dd492f
parent08ff32352d6ff7083533dc1c25618d42f92ec28e
IB/mlx4: Fix spinlock order to avoid lockdep warnings

lockdep warns about taking a hard-irq-unsafe lock (sriov->id_map_lock)
inside a hard-irq-safe lock (sriov->going_down_lock).

Since id_map_lock is never taken in the interrupt context, we can
simply reverse the order of taking the two spinlocks, thus avoiding
the warning and the depencency.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Roland Dreier <roland@purestorage.com>
drivers/infiniband/hw/mlx4/cm.c