diff options
Diffstat (limited to 'drivers/char/nwflash.c')
| -rw-r--r-- | drivers/char/nwflash.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/char/nwflash.c b/drivers/char/nwflash.c index 043a1c7b86be..a12f52400dbc 100644 --- a/drivers/char/nwflash.c +++ b/drivers/char/nwflash.c @@ -25,7 +25,6 @@ #include <linux/spinlock.h> #include <linux/rwsem.h> #include <linux/init.h> -#include <linux/smp_lock.h> #include <linux/mutex.h> #include <linux/jiffies.h> @@ -41,6 +40,7 @@ #define NWFLASH_VERSION "6.4" +static DEFINE_MUTEX(flash_mutex); static void kick_open(void); static int get_flash_id(void); static int erase_block(int nBlock); @@ -96,7 +96,7 @@ static int get_flash_id(void) static long flash_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) { - lock_kernel(); + mutex_lock(&flash_mutex); switch (cmd) { case CMD_WRITE_DISABLE: gbWriteBase64Enable = 0; @@ -114,10 +114,10 @@ static long flash_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) default: gbWriteBase64Enable = 0; gbWriteEnable = 0; - unlock_kernel(); + mutex_unlock(&flash_mutex); return -EINVAL; } - unlock_kernel(); + mutex_unlock(&flash_mutex); return 0; } @@ -282,7 +282,7 @@ static loff_t flash_llseek(struct file *file, loff_t offset, int orig) { loff_t ret; - lock_kernel(); + mutex_lock(&flash_mutex); if (flashdebug) printk(KERN_DEBUG "flash_llseek: offset=0x%X, orig=0x%X.\n", (unsigned int) offset, orig); @@ -317,7 +317,7 @@ static loff_t flash_llseek(struct file *file, loff_t offset, int orig) default: ret = -EINVAL; } - unlock_kernel(); + mutex_unlock(&flash_mutex); return ret; } |