uml-random: BKL pushdown

Signed-off-by: Arnd Bergmann <[email protected]>
chewitt · Jul 2, 2008 · 7eb500d · 7eb500d
1 parent bd6859f
commit 7eb500d
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/arch/um/drivers/random.c b/arch/um/drivers/random.c
@@ -7,6 +7,7 @@
  * of the GNU General Public License, incorporated herein by reference.
  */
 #include <linux/sched.h>
+#include <linux/smp_lock.h>
 #include <linux/module.h>
 #include <linux/fs.h>
 #include <linux/interrupt.h>
@@ -33,6 +34,8 @@ static DECLARE_WAIT_QUEUE_HEAD(host_read_wait);
 
 static int rng_dev_open (struct inode *inode, struct file *filp)
 {
+	cycle_kernel_lock();
+
 	/* enforce read-only access to this chrdev */
 	if ((filp->f_mode & FMODE_READ) == 0)
 		return -EINVAL;