diff options
Diffstat (limited to 'drivers/char/vr41xx_giu.c')
| -rw-r--r-- | drivers/char/vr41xx_giu.c | 4 |
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; |