IB/rdmavt: restore IRQs on error path in rvt_create_ah()

We need to call spin_unlock_irqrestore() instead of vanilla
spin_unlock() on this error path.

Fixes: 119a8e708d16 ("IB/rdmavt: Add AH to rdmavt")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Acked-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/sw/rdmavt/ah.c b/drivers/infiniband/sw/rdmavt/ah.c
index 16c446142c2aeb75a87e93991491f25cae96c203..b0f09fb45c7225c8fc988c27f5f423601d832bd8 100644 (file)
--- a/drivers/infiniband/sw/rdmavt/ah.c
+++ b/drivers/infiniband/sw/rdmavt/ah.c
@@ -119,7 +119,7 @@ struct ib_ah *rvt_create_ah(struct ib_pd *pd,
 
        spin_lock_irqsave(&dev->n_ahs_lock, flags);
        if (dev->n_ahs_allocated == dev->dparms.props.max_ah) {
-               spin_unlock(&dev->n_ahs_lock);
+               spin_unlock_irqrestore(&dev->n_ahs_lock, flags);
                kfree(ah);
                return ERR_PTR(-ENOMEM);
        }