diff options
Diffstat (limited to 'drivers/char/generic_nvram.c')
| -rw-r--r-- | drivers/char/generic_nvram.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/char/generic_nvram.c b/drivers/char/generic_nvram.c index 82b5a88a82d..0e941b57482 100644 --- a/drivers/char/generic_nvram.c +++ b/drivers/char/generic_nvram.c @@ -19,7 +19,7 @@ #include <linux/miscdevice.h> #include <linux/fcntl.h> #include <linux/init.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <asm/uaccess.h> #include <asm/nvram.h> #ifdef CONFIG_PPC_PMAC @@ -28,6 +28,7 @@ #define NVRAM_SIZE 8192 +static DEFINE_MUTEX(nvram_mutex); static ssize_t nvram_len; static loff_t nvram_llseek(struct file *file, loff_t offset, int origin) @@ -120,9 +121,9 @@ static long nvram_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned l { int ret; - lock_kernel(); + mutex_lock(&nvram_mutex); ret = nvram_ioctl(file, cmd, arg); - unlock_kernel(); + mutex_unlock(&nvram_mutex); return ret; } |