diff options
Diffstat (limited to 'drivers/char/pc8736x_gpio.c')
| -rw-r--r-- | drivers/char/pc8736x_gpio.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/char/pc8736x_gpio.c b/drivers/char/pc8736x_gpio.c index ecfaf180e5bd..b930de50407a 100644 --- a/drivers/char/pc8736x_gpio.c +++ b/drivers/char/pc8736x_gpio.c @@ -20,6 +20,7 @@ #include <linux/mutex.h> #include <linux/nsc_gpio.h> #include <linux/platform_device.h> +#include <linux/smp_lock.h> #include <asm/uaccess.h> #define DEVNAME "pc8736x_gpio" @@ -217,6 +218,7 @@ static int pc8736x_gpio_open(struct inode *inode, struct file *file) unsigned m = iminor(inode); file->private_data = &pc8736x_gpio_ops; + cycle_kernel_lock(); dev_dbg(&pdev->dev, "open %d\n", m); if (m >= PC8736X_GPIO_CT) |