[SCSI] libsas: fix lockdep issue with ATA

lockdep noticed that with ATA support the port->dev_list_lock was
entangled at irq context, so it now needs to become IRQ safe

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 6 insertions, 6 deletions

diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index d05fc23b4d5b..969fd3eb494a 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -677,9 +677,9 @@ static struct domain_device *sas_ex_discover_end_dev(
 
                 child->rphy = rphy;
 
-                spin_lock(&parent->port->dev_list_lock);
+                spin_lock_irq(&parent->port->dev_list_lock);
                 list_add_tail(&child->dev_list_node, &parent->port->dev_list);
-                spin_unlock(&parent->port->dev_list_lock);
+                spin_unlock_irq(&parent->port->dev_list_lock);
 
                 res = sas_discover_sata(child);
                 if (res) {
@@ -701,9 +701,9 @@ static struct domain_device *sas_ex_discover_end_dev(
                 child->rphy = rphy;
                 sas_fill_in_rphy(child, rphy);
 
-                spin_lock(&parent->port->dev_list_lock);
+                spin_lock_irq(&parent->port->dev_list_lock);
                 list_add_tail(&child->dev_list_node, &parent->port->dev_list);
-                spin_unlock(&parent->port->dev_list_lock);
+                spin_unlock_irq(&parent->port->dev_list_lock);
 
                 res = sas_discover_end_dev(child);
                 if (res) {
@@ -816,9 +816,9 @@ static struct domain_device *sas_ex_discover_expander(
         sas_fill_in_rphy(child, rphy);
         sas_rphy_add(rphy);
 
-        spin_lock(&parent->port->dev_list_lock);
+        spin_lock_irq(&parent->port->dev_list_lock);
         list_add_tail(&child->dev_list_node, &parent->port->dev_list);
-        spin_unlock(&parent->port->dev_list_lock);
+        spin_unlock_irq(&parent->port->dev_list_lock);
 
         res = sas_discover_expander(child);
         if (res) {