4 files changed, 21 insertions, 5 deletions

diff --git a/drivers/macintosh/adb.c b/drivers/macintosh/adb.c
index dbaad39020a1..40c70ba62bf0 100644
--- a/drivers/macintosh/adb.c
+++ b/drivers/macintosh/adb.c
@@ -644,12 +644,18 @@ do_adb_query(struct adb_request *req)
 static int adb_open(struct inode *inode, struct file *file)
 {
 	struct adbdev_state *state;
+	int ret = 0;
 
-	if (iminor(inode) > 0 || adb_controller == NULL)
-		return -ENXIO;
+	lock_kernel();
+	if (iminor(inode) > 0 || adb_controller == NULL) {
+		ret = -ENXIO;
+		goto out;
+	}
 	state = kmalloc(sizeof(struct adbdev_state), GFP_KERNEL);
-	if (state == 0)
-		return -ENOMEM;
+	if (state == 0) {
+		ret = -ENOMEM;
+		goto out;
+	}
 	file->private_data = state;
 	spin_lock_init(&state->lock);
 	atomic_set(&state->n_pending, 0);
@@ -657,7 +663,9 @@ static int adb_open(struct inode *inode, struct file *file)
 	init_waitqueue_head(&state->wait_queue);
 	state->inuse = 1;
 
-	return 0;
+out:
+	unlock_kernel();
+	return ret;
 }
 
 static int adb_release(struct inode *inode, struct file *file)
diff --git a/drivers/macintosh/ans-lcd.c b/drivers/macintosh/ans-lcd.c
index 73c50bc02095..6a8221893256 100644
--- a/drivers/macintosh/ans-lcd.c
+++ b/drivers/macintosh/ans-lcd.c
@@ -3,6 +3,7 @@
  */
 
 #include <linux/types.h>
+#include <linux/smp_lock.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
 #include <linux/miscdevice.h>
@@ -119,6 +120,7 @@ anslcd_ioctl( struct inode * inode, struct file * file,
 static int
 anslcd_open( struct inode * inode, struct file * file )
 {
+	cycle_kernel_lock();
 	return 0;
 }
 
diff --git a/drivers/macintosh/smu.c b/drivers/macintosh/smu.c
index d86d57af282a..32cb0298f88e 100644
--- a/drivers/macintosh/smu.c
+++ b/drivers/macintosh/smu.c
@@ -19,6 +19,7 @@
  *    the userland interface
  */
 
+#include <linux/smp_lock.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/device.h>
@@ -1086,10 +1087,12 @@ static int smu_open(struct inode *inode, struct file *file)
 	pp->mode = smu_file_commands;
 	init_waitqueue_head(&pp->wait);
 
+	lock_kernel();
 	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();
 
 	return 0;
 }
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index d6365a9f0637..d524dc245a2c 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -18,6 +18,7 @@
  *
  */
 #include <stdarg.h>
+#include <linux/smp_lock.h>
 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
@@ -2047,6 +2048,7 @@ pmu_open(struct inode *inode, struct file *file)
 	pp->rb_get = pp->rb_put = 0;
 	spin_lock_init(&pp->lock);
 	init_waitqueue_head(&pp->wait);
+	lock_kernel();
 	spin_lock_irqsave(&all_pvt_lock, flags);
 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
 	pp->backlight_locker = 0;
@@ -2054,6 +2056,7 @@ pmu_open(struct inode *inode, struct file *file)
 	list_add(&pp->list, &all_pmu_pvt);
 	spin_unlock_irqrestore(&all_pvt_lock, flags);
 	file->private_data = pp;
+	unlock_kernel();
 	return 0;
 }