From: Arnd Bergmann <arnd@arndb.de>
Date: Tue, 20 May 2008 17:16:57 +0000 (+0200)
Subject: uml-random: BKL pushdown
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=7eb500d1a0408c37d0c0360f066f8b7701835d68;p=deliverable%2Flinux.git

uml-random: BKL pushdown

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

diff --git a/arch/um/drivers/random.c b/arch/um/drivers/random.c
index 4949044773ba..6eabb7022a2d 100644
--- 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;