X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=drivers%2Fchar%2Fmbcs.c;h=1aeaaba680d22e1e943995efeff6b0ed671c5fe8;hb=f283d22713b0bdc147097c92c9b45855339cf1c8;hp=83bef4efe37636869f418756462516d00a4f3ccd;hpb=b74b953b998bcc2db91b694446f3a2619ec32de6;p=~andy%2Flinux

diff --git a/drivers/char/mbcs.c b/drivers/char/mbcs.c
index 83bef4efe37..1aeaaba680d 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;
 }