From: Jasper Spaans <jasper@vs19.net>
Date: Thu, 24 Nov 2005 15:53:36 +0000 (+0100)
Subject: [PATCH] fbcon: fix obvious bug in fbcon logo rotation code
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6d9885a8ce45cd9b7d36517ee823a480eaf95c02;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[PATCH] fbcon: fix obvious bug in fbcon logo rotation code

This code fixes a tiny problem with the recent fbcon rotation changes:
fb_prepare_logo doesn't check the return value of fb_find_logo and that
causes a crash for my while booting.

Obvious & working & tested fix is here.

Signed-off-by: Jasper Spaans <jasper@vs19.net>
Acked-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c
index 9f180096c896..6240aedb4154 100644
--- a/drivers/video/fbmem.c
+++ b/drivers/video/fbmem.c
@@ -452,13 +452,17 @@ int fb_prepare_logo(struct fb_info *info, int rotate)
 
 	/* Return if no suitable logo was found */
 	fb_logo.logo = fb_find_logo(depth);
+
+	if (!fb_logo.logo) {
+		return 0;
+	}
 	
 	if (rotate == FB_ROTATE_UR || rotate == FB_ROTATE_UD)
 		yres = info->var.yres;
 	else
 		yres = info->var.xres;
 
-	if (fb_logo.logo && fb_logo.logo->height > yres) {
+	if (fb_logo.logo->height > yres) {
 		fb_logo.logo = NULL;
 		return 0;
 	}