hw-random: BKL pushdown
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index 662d60e..e5d583c 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -37,6 +37,7 @@
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/sched.h>
+#include <linux/smp_lock.h>
#include <linux/init.h>
#include <linux/miscdevice.h>
#include <linux/delay.h>
@@ -86,6 +87,7 @@
return -EINVAL;
if (filp->f_mode & FMODE_WRITE)
return -EINVAL;
+ cycle_kernel_lock();
return 0;
}