X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=drivers%2Fmacintosh%2Fsmu.c;h=290cb325a94c8b48becedab2ffe9e363aa4dd7fa;hb=2c15bd00a5d6b2b64e006e91e2196f0c6a764cb6;hp=e58c3d33e035e4cba5e5213417e08d9a6be91c2f;hpb=bc584c5107bfd97e2aa41c798e3b213bcdd4eae7;p=~andy%2Flinux

diff --git a/drivers/macintosh/smu.c b/drivers/macintosh/smu.c
index e58c3d33e03..290cb325a94 100644
--- a/drivers/macintosh/smu.c
+++ b/drivers/macintosh/smu.c
@@ -19,7 +19,6 @@
  *    the userland interface
  */
 
-#include <linux/smp_lock.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/device.h>
@@ -97,6 +96,7 @@ struct smu_device {
  * I don't think there will ever be more than one SMU, so
  * for now, just hard code that
  */
+static DEFINE_MUTEX(smu_mutex);
 static struct smu_device	*smu;
 static DEFINE_MUTEX(smu_part_access);
 static int smu_irq_inited;
@@ -1095,12 +1095,12 @@ static int smu_open(struct inode *inode, struct file *file)
 	pp->mode = smu_file_commands;
 	init_waitqueue_head(&pp->wait);
 
-	lock_kernel();
+	mutex_lock(&smu_mutex);
 	spin_lock_irqsave(&smu_clist_lock, flags);
 	list_add(&pp->list, &smu_clist);
 	spin_unlock_irqrestore(&smu_clist_lock, flags);
 	file->private_data = pp;
-	unlock_kernel();
+	mutex_unlock(&smu_mutex);
 
 	return 0;
 }