From: Vasily Khoruzhick <anarsoul@gmail.com>
Date: Sun, 26 Feb 2012 13:52:02 +0000 (+0300)
Subject: pxafb: do console locking before calling fb_blank()
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=23f1365677a84f775d374a1d8ca0360257685894;p=deliverable%2Flinux.git

pxafb: do console locking before calling fb_blank()

Otherwise we hit WARN_CONSOLE_UNLOCKED in do_unblank_screen

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
---

diff --git a/drivers/video/pxafb.c b/drivers/video/pxafb.c
index 1d1e4f175e78..c176561a2222 100644
--- a/drivers/video/pxafb.c
+++ b/drivers/video/pxafb.c
@@ -54,6 +54,7 @@
 #include <linux/mutex.h>
 #include <linux/kthread.h>
 #include <linux/freezer.h>
+#include <linux/console.h>
 
 #include <mach/hardware.h>
 #include <asm/io.h>
@@ -730,9 +731,12 @@ static int overlayfb_open(struct fb_info *info, int user)
 	if (user == 0)
 		return -ENODEV;
 
-	if (ofb->usage++ == 0)
+	if (ofb->usage++ == 0) {
 		/* unblank the base framebuffer */
+		console_lock();
 		fb_blank(&ofb->fbi->fb, FB_BLANK_UNBLANK);
+		console_unlock();
+	}
 
 	return 0;
 }