infiniband: Mellanox IB driver patch use _nort() primitives

Fixes in_atomic stack-dump, when Mellanox module is loaded into the RT
Kernel.

Michael S. Tsirkin <mst@dev.mellanox.co.il> sayeth:
"Basically, if you just make spin_lock_irqsave (and spin_lock_irq) not disable
interrupts for non-raw spinlocks, I think all of infiniband will be fine without
changes."

Signed-off-by: Sven-Thorsten Dietrich <sven@thebigcorporation.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
index a0e97532e714..1dc64467bae6 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
@@ -773,7 +773,7 @@ void ipoib_mcast_restart_task(struct work_struct *work)
 
         ipoib_mcast_stop_thread(dev, 0);
 
-        local_irq_save(flags);
+        local_irq_save_nort(flags);
         netif_addr_lock(dev);
         spin_lock(&priv->lock);
 
@@ -852,7 +852,7 @@ void ipoib_mcast_restart_task(struct work_struct *work)
 
         spin_unlock(&priv->lock);
         netif_addr_unlock(dev);
-        local_irq_restore(flags);
+        local_irq_restore_nort(flags);
 
         /* We have to cancel outside of the spinlock */
         list_for_each_entry_safe(mcast, tmcast, &remove_list, list) {