Merge branch 'linus' into perfcounters/core

Merge reason: This brach was on -rc1, refresh it to almost-rc4 to pick up
              the latest upstream fixes.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c
index 2ac32e6b595..d412a1ddc12 100644
--- a/drivers/video/fbmem.c
+++ b/drivers/video/fbmem.c
@@ -1097,8 +1097,11 @@ 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:
@@ -1115,8 +1118,11 @@ 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);
 		break;
 	case FBIOBLANK:
 		if (!lock_fb_info(info))
@@ -1521,7 +1527,10 @@ register_framebuffer(struct fb_info *fb_info)
 	registered_fb[i] = fb_info;
 
 	event.info = fb_info;
+	if (!lock_fb_info(fb_info))
+		return -ENODEV;
 	fb_notifier_call_chain(FB_EVENT_FB_REGISTERED, &event);
+	unlock_fb_info(fb_info);
 	return 0;
 }
 
@@ -1555,8 +1564,12 @@ unregister_framebuffer(struct fb_info *fb_info)
 		goto done;
 	}
 
+
+	if (!lock_fb_info(fb_info))
+		return -ENODEV;
 	event.info = fb_info;
 	ret = fb_notifier_call_chain(FB_EVENT_FB_UNBIND, &event);
+	unlock_fb_info(fb_info);
 
 	if (ret) {
 		ret = -EINVAL;
@@ -1590,6 +1603,8 @@ void fb_set_suspend(struct fb_info *info, int state)
 {
 	struct fb_event event;
 
+	if (!lock_fb_info(info))
+		return;
 	event.info = info;
 	if (state) {
 		fb_notifier_call_chain(FB_EVENT_SUSPEND, &event);
@@ -1598,6 +1613,7 @@ void fb_set_suspend(struct fb_info *info, int state)
 		info->state = FBINFO_STATE_RUNNING;
 		fb_notifier_call_chain(FB_EVENT_RESUME, &event);
 	}
+	unlock_fb_info(info);
 }
 
 /**
@@ -1667,8 +1683,11 @@ int fb_new_modelist(struct fb_info *info)
 	err = 1;
 
 	if (!list_empty(&info->modelist)) {
+		if (!lock_fb_info(info))
+			return -ENODEV;
 		event.info = info;
 		err = fb_notifier_call_chain(FB_EVENT_NEW_MODELIST, &event);
+		unlock_fb_info(info);
 	}
 
 	return err;