X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fvideo%2Fneofb.c;h=395ccedde9a63b5718afdefb34d3f3c4f7235db8;hb=3689a0ec60bc8f56cc372c1dfa0d89dab48f7c9c;hp=deaf820cb38f798542271ef2ebf65277f5efc087;hpb=678f2b7df24c34f90fee264fa3a8069bca9c99ad;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/video/neofb.c b/drivers/video/neofb.c
index deaf820cb38..395ccedde9a 100644
--- a/drivers/video/neofb.c
+++ b/drivers/video/neofb.c
@@ -66,7 +66,6 @@
 #include <linux/init.h>
 #ifdef CONFIG_TOSHIBA
 #include <linux/toshiba.h>
-extern int tosh_smm(SMMRegisters *regs);
 #endif
 
 #include <asm/io.h>
@@ -557,14 +556,16 @@ static int
 neofb_open(struct fb_info *info, int user)
 {
 	struct neofb_par *par = info->par;
-	int cnt = atomic_read(&par->ref_count);
 
-	if (!cnt) {
+	mutex_lock(&par->open_lock);
+	if (!par->ref_count) {
 		memset(&par->state, 0, sizeof(struct vgastate));
 		par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS;
 		save_vga(&par->state);
 	}
-	atomic_inc(&par->ref_count);
+	par->ref_count++;
+	mutex_unlock(&par->open_lock);
+
 	return 0;
 }
 
@@ -572,14 +573,18 @@ static int
 neofb_release(struct fb_info *info, int user)
 {
 	struct neofb_par *par = info->par;
-	int cnt = atomic_read(&par->ref_count);
 
-	if (!cnt)
+	mutex_lock(&par->open_lock);
+	if (!par->ref_count) {
+		mutex_unlock(&par->open_lock);
 		return -EINVAL;
-	if (cnt == 1) {
+	}
+	if (par->ref_count == 1) {
 		restore_vga(&par->state);
 	}
-	atomic_dec(&par->ref_count);
+	par->ref_count--;
+	mutex_unlock(&par->open_lock);
+
 	return 0;
 }
 
@@ -2048,6 +2053,7 @@ static struct fb_info *__devinit neo_alloc_fb_info(struct pci_dev *dev, const st
 
 	info->fix.accel = id->driver_data;
 
+	mutex_init(&par->open_lock);
 	par->pci_burst = !nopciburst;
 	par->lcd_stretch = !nostretch;
 	par->libretto = libretto;