Merge branch 'linus' into x86/x2apic

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/char/scx200_gpio.c b/drivers/char/scx200_gpio.c
index 99e5272e3c53..1d9100561c8a 100644
--- a/drivers/char/scx200_gpio.c
+++ b/drivers/char/scx200_gpio.c
@@ -12,6 +12,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
+#include <linux/smp_lock.h>
 #include <asm/uaccess.h>
 #include <asm/io.h>
 
@@ -51,6 +52,7 @@ static int scx200_gpio_open(struct inode *inode, struct file *file)
 	unsigned m = iminor(inode);
 	file->private_data = &scx200_gpio_ops;
 
+	cycle_kernel_lock();
 	if (m >= MAX_PINS)
 		return -EINVAL;
 	return nonseekable_open(inode, file);