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path: root/drivers/char/vr41xx_giu.c
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Diffstat (limited to 'drivers/char/vr41xx_giu.c')
-rw-r--r--drivers/char/vr41xx_giu.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/char/vr41xx_giu.c b/drivers/char/vr41xx_giu.c
index 412937fdb958..ffe9b4e3072e 100644
--- a/drivers/char/vr41xx_giu.c
+++ b/drivers/char/vr41xx_giu.c
@@ -27,6 +27,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
+#include <linux/smp_lock.h>
#include <linux/spinlock.h>
#include <linux/types.h>
@@ -543,12 +544,11 @@ static ssize_t gpio_write(struct file *file, const char __user *data,
return i;
}
-/* No BKL needed here; only global (giu_nr_pins) is only set
- at probe time */
static int gpio_open(struct inode *inode, struct file *file)
{
unsigned int pin;
+ cycle_kernel_lock();
pin = iminor(inode);
if (pin >= giu_nr_pins)
return -EBADF;