diff options
Diffstat (limited to 'drivers/char/mbcs.c')
| -rw-r--r-- | drivers/char/mbcs.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/char/mbcs.c b/drivers/char/mbcs.c index 83bef4e..1aeaaba 100644 --- a/drivers/char/mbcs.c +++ b/drivers/char/mbcs.c @@ -25,7 +25,6 @@ #include <linux/mm.h> #include <linux/uio.h> #include <linux/mutex.h> -#include <linux/smp_lock.h> #include <linux/slab.h> #include <asm/io.h> #include <asm/uaccess.h> @@ -42,6 +41,7 @@ #else #define DBG(fmt...) #endif +static DEFINE_MUTEX(mbcs_mutex); static int mbcs_major; static LIST_HEAD(soft_list); @@ -385,19 +385,19 @@ static int mbcs_open(struct inode *ip, struct file *fp) struct mbcs_soft *soft; int minor; - lock_kernel(); + mutex_lock(&mbcs_mutex); minor = iminor(ip); /* Nothing protects access to this list... */ list_for_each_entry(soft, &soft_list, list) { if (soft->nasid == minor) { fp->private_data = soft->cxdev; - unlock_kernel(); + mutex_unlock(&mbcs_mutex); return 0; } } - unlock_kernel(); + mutex_unlock(&mbcs_mutex); return -ENODEV; } |
