X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=drivers%2Fvideo%2Ffbmem.c;h=2ac32e6b5953bb981e8bc57f9516584bc868d1c9;hb=ac44e5b2ed62bf4acf9df84575d3f18c7a6fdf22;hp=cfd9dce1ce0b666627b6306e0eb693f669e154f5;hpb=158c1529fe8d0094d0051169fd2b1a23e6305223;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c
index cfd9dce1ce0..2ac32e6b595 100644
--- a/drivers/video/fbmem.c
+++ b/drivers/video/fbmem.c
@@ -46,6 +46,17 @@
 struct fb_info *registered_fb[FB_MAX] __read_mostly;
 int num_registered_fb __read_mostly;
 
+int lock_fb_info(struct fb_info *info)
+{
+	mutex_lock(&info->lock);
+	if (!info->fbops) {
+		mutex_unlock(&info->lock);
+		return 0;
+	}
+	return 1;
+}
+EXPORT_SYMBOL(lock_fb_info);
+
 /*
  * Helpers
  */
@@ -1086,13 +1097,8 @@ static long do_fb_ioctl(struct fb_info *info, unsigned int cmd,
 			return -EINVAL;
 		con2fb.framebuffer = -1;
 		event.data = &con2fb;
-
-		if (!lock_fb_info(info))
-			return -ENODEV;
 		event.info = info;
 		fb_notifier_call_chain(FB_EVENT_GET_CONSOLE_MAP, &event);
-		unlock_fb_info(info);
-
 		ret = copy_to_user(argp, &con2fb, sizeof(con2fb)) ? -EFAULT : 0;
 		break;
 	case FBIOPUT_CON2FBMAP:
@@ -1109,12 +1115,8 @@ static long do_fb_ioctl(struct fb_info *info, unsigned int cmd,
 			break;
 		}
 		event.data = &con2fb;
-		if (!lock_fb_info(info))
-			return -ENODEV;
 		event.info = info;
-		ret = fb_notifier_call_chain(FB_EVENT_SET_CONSOLE_MAP,
-					      &event);
-		unlock_fb_info(info);
+		ret = fb_notifier_call_chain(FB_EVENT_SET_CONSOLE_MAP, &event);
 		break;
 	case FBIOBLANK:
 		if (!lock_fb_info(info))