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 381475fa137b5d1ed1b5be28554d9c80e64ea165..577a48339bab159747f0cc4df764bf7e532a9c5b 100644 (file)
--- 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);