1 files changed, 6 insertions, 0 deletions

diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index 08a36f1b35d2..b4e9b734e0bd 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -17,6 +17,7 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  */
 #include <linux/init.h>
+#include <linux/spinlock.h>
 
 #include <asm/cacheflush.h>
 #include <asm/io.h>
@@ -25,14 +26,19 @@
 #define CACHE_LINE_SIZE         32
 
 static void __iomem *l2x0_base;
+static DEFINE_SPINLOCK(l2x0_lock);
 
 static inline void sync_writel(unsigned long val, unsigned long reg,
                                unsigned long complete_mask)
 {
+        unsigned long flags;
+
+        spin_lock_irqsave(&l2x0_lock, flags);
         writel(val, l2x0_base + reg);
         /* wait for the operation to complete */
         while (readl(l2x0_base + reg) & complete_mask)
                 ;
+        spin_unlock_irqrestore(&l2x0_lock, flags);
 }
 
 static inline void cache_sync(void)