diff options
Diffstat (limited to 'drivers/char/generic_nvram.c')
| -rw-r--r-- | drivers/char/generic_nvram.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/char/generic_nvram.c b/drivers/char/generic_nvram.c index fda4181b5e6..82b5a88a82d 100644 --- a/drivers/char/generic_nvram.c +++ b/drivers/char/generic_nvram.c @@ -19,6 +19,7 @@ #include <linux/miscdevice.h> #include <linux/fcntl.h> #include <linux/init.h> +#include <linux/smp_lock.h> #include <asm/uaccess.h> #include <asm/nvram.h> #ifdef CONFIG_PPC_PMAC @@ -84,8 +85,7 @@ static ssize_t write_nvram(struct file *file, const char __user *buf, return p - buf; } -static int nvram_ioctl(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long arg) +static int nvram_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { switch(cmd) { #ifdef CONFIG_PPC_PMAC @@ -116,12 +116,23 @@ static int nvram_ioctl(struct inode *inode, struct file *file, return 0; } +static long nvram_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + int ret; + + lock_kernel(); + ret = nvram_ioctl(file, cmd, arg); + unlock_kernel(); + + return ret; +} + const struct file_operations nvram_fops = { .owner = THIS_MODULE, .llseek = nvram_llseek, .read = read_nvram, .write = write_nvram, - .ioctl = nvram_ioctl, + .unlocked_ioctl = nvram_unlocked_ioctl, }; static struct miscdevice nvram_dev = { |