From: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Date: Thu, 9 Nov 2017 17:09:31 +0000 (+0100)
Subject: sm501fb: unregister framebuffer only if registered
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=35bfbf70b2928ce5fbc117a410915eeee457202b;p=linux.git

sm501fb: unregister framebuffer only if registered

There are cases when panel and crt both are not defined and only one of
them is defined and initialized. In such cases, while removing the
device, unregister the framebuffer only if it was registered.

Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
---

diff --git a/drivers/video/fbdev/sm501fb.c b/drivers/video/fbdev/sm501fb.c
index 381475fa137b5..577a48339bab1 100644
--- a/drivers/video/fbdev/sm501fb.c
+++ b/drivers/video/fbdev/sm501fb.c
@@ -2079,8 +2079,10 @@ static int sm501fb_remove(struct platform_device *pdev)
 	sm501_free_init_fb(info, HEAD_CRT);
 	sm501_free_init_fb(info, HEAD_PANEL);
 
-	unregister_framebuffer(fbinfo_crt);
-	unregister_framebuffer(fbinfo_pnl);
+	if (fbinfo_crt)
+		unregister_framebuffer(fbinfo_crt);
+	if (fbinfo_pnl)
+		unregister_framebuffer(fbinfo_pnl);
 
 	sm501fb_stop(info);
 	kfree(info);