diff options
Diffstat (limited to 'arch/cris/arch-v10/drivers/gpio.c')
| -rw-r--r-- | arch/cris/arch-v10/drivers/gpio.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/cris/arch-v10/drivers/gpio.c b/arch/cris/arch-v10/drivers/gpio.c index 68a998bd1069..86048e697eb5 100644 --- a/arch/cris/arch-v10/drivers/gpio.c +++ b/arch/cris/arch-v10/drivers/gpio.c @@ -16,6 +16,7 @@ #include <linux/errno.h> #include <linux/kernel.h> #include <linux/fs.h> +#include <linux/smp_lock.h> #include <linux/string.h> #include <linux/poll.h> #include <linux/init.h> @@ -323,6 +324,7 @@ gpio_open(struct inode *inode, struct file *filp) if (!priv) return -ENOMEM; + lock_kernel(); priv->minor = p; /* initialize the io/alarm struct */ @@ -357,6 +359,7 @@ gpio_open(struct inode *inode, struct file *filp) alarmlist = priv; spin_unlock_irqrestore(&gpio_lock, flags); + unlock_kernel(); return 0; } |