1 files changed, 3 insertions, 2 deletions

diff --git a/arch/sparc/kernel/prom_common.c b/arch/sparc/kernel/prom_common.c
index 9f20566b0773..79cc0d1a477d 100644
--- a/arch/sparc/kernel/prom_common.c
+++ b/arch/sparc/kernel/prom_common.c
@@ -54,6 +54,7 @@ EXPORT_SYMBOL(of_set_property_mutex);
 int of_set_property(struct device_node *dp, const char *name, void *val, int len)
 {
         struct property **prevp;
+        unsigned long flags;
         void *new_val;
         int err;
 
@@ -64,7 +65,7 @@ int of_set_property(struct device_node *dp, const char *name, void *val, int len
         err = -ENODEV;
 
         mutex_lock(&of_set_property_mutex);
-        raw_spin_lock(&devtree_lock);
+        raw_spin_lock_irqsave(&devtree_lock, flags);
         prevp = &dp->properties;
         while (*prevp) {
                 struct property *prop = *prevp;
@@ -91,7 +92,7 @@ int of_set_property(struct device_node *dp, const char *name, void *val, int len
                 }
                 prevp = &(*prevp)->next;
         }
-        raw_spin_unlock(&devtree_lock);
+        raw_spin_unlock_irqrestore(&devtree_lock, flags);
         mutex_unlock(&of_set_property_mutex);
 
         /* XXX Upate procfs if necessary... */