efirtc: BKL pushdown

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

diff --git a/drivers/char/efirtc.c b/drivers/char/efirtc.c
index 49233f5898742040339b5a1d31c4ce7fd74d9960..d57ca3e4e5343311f43acbf8b35021ed16ee3fe4 100644 (file)
--- a/drivers/char/efirtc.c
+++ b/drivers/char/efirtc.c
@@ -28,6 +28,7 @@
  */
 
 
+#include <linux/smp_lock.h>
 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/miscdevice.h>
@@ -272,6 +273,7 @@ efi_rtc_open(struct inode *inode, struct file *file)
         * We do accept multiple open files at the same time as we
         * synchronize on the per call operation.
         */
+       cycle_kernel_lock();
        return 0;
 }