2 files changed, 17 insertions, 11 deletions

diff --git a/drivers/video/i810/i810.h b/drivers/video/i810/i810.h
index 579195c2bea..aa65ffce915 100644
--- a/drivers/video/i810/i810.h
+++ b/drivers/video/i810/i810.h
@@ -264,7 +264,8 @@ struct i810fb_par {
 	struct heap_data         cursor_heap;
 	struct vgastate          state;
 	struct i810fb_i2c_chan   chan[3];
-	atomic_t                 use_count;
+	struct mutex		 open_lock;
+	unsigned int		 use_count;
 	u32 pseudo_palette[17];
 	unsigned long mmio_start_phys;
 	u8 __iomem *mmio_start_virtual;
diff --git a/drivers/video/i810/i810_main.c b/drivers/video/i810/i810_main.c
index b55a12d95eb..e343c0da961 100644
--- a/drivers/video/i810/i810_main.c
+++ b/drivers/video/i810/i810_main.c
@@ -1235,9 +1235,9 @@ static int i810fb_getcolreg(u8 regno, u8 *red, u8 *green, u8 *blue,
 static int i810fb_open(struct fb_info *info, int user)
 {
 	struct i810fb_par *par = info->par;
-	u32 count = atomic_read(&par->use_count);
-	
-	if (count == 0) {
+
+	mutex_lock(&par->open_lock);
+	if (par->use_count == 0) {
 		memset(&par->state, 0, sizeof(struct vgastate));
 		par->state.flags = VGA_SAVE_CMAP;
 		par->state.vgabase = par->mmio_start_virtual;
@@ -1246,7 +1246,8 @@ static int i810fb_open(struct fb_info *info, int user)
 		i810_save_vga_state(par);
 	}
 
-	atomic_inc(&par->use_count);
+	par->use_count++;
+	mutex_unlock(&par->open_lock);
 	
 	return 0;
 }
@@ -1254,18 +1255,20 @@ static int i810fb_open(struct fb_info *info, int user)
 static int i810fb_release(struct fb_info *info, int user)
 {
 	struct i810fb_par *par = info->par;
-	u32 count;
-	
-	count = atomic_read(&par->use_count);
-	if (count == 0)
+
+	mutex_lock(&par->open_lock);
+	if (par->use_count == 0) {
+		mutex_unlock(&par->open_lock);
 		return -EINVAL;
+	}
 
-	if (count == 1) {
+	if (par->use_count == 1) {
 		i810_restore_vga_state(par);
 		restore_vga(&par->state);
 	}
 
-	atomic_dec(&par->use_count);
+	par->use_count--;
+	mutex_unlock(&par->open_lock);
 	
 	return 0;
 }
@@ -1752,6 +1755,8 @@ static void __devinit i810_init_monspecs(struct fb_info *info)
 static void __devinit i810_init_defaults(struct i810fb_par *par, 
 				      struct fb_info *info)
 {
+	mutex_init(&par->open_lock);
+
 	if (voffset) 
 		v_offset_default = voffset;
 	else if (par->aperture.size > 32 * 1024 * 1024)