From: Michel Dänzer <michel.daenzer@amd.com>
Date: Mon, 11 Sep 2017 08:09:17 +0000 (+0900)
Subject: radeon: Only destroy fbdev framebuffer if it was initialized
X-Git-Tag: v4.15-rc1~56^2~28^2~96
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=e97f12f359775de4fabfb507f836ebffa20f4986;p=users%2Fjedix%2Flinux-maple.git

radeon: Only destroy fbdev framebuffer if it was initialized

Fixes crash when trying to unload the radeon module before the fbdev
framebuffer was initialized, which can happen since the DRM fbdev helper
code supports deferred setup.

Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c
index fd25361ac681..2fcf805d3a16 100644
--- a/drivers/gpu/drm/radeon/radeon_fb.c
+++ b/drivers/gpu/drm/radeon/radeon_fb.c
@@ -322,10 +322,10 @@ static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfb
 	if (rfb->obj) {
 		radeonfb_destroy_pinned_object(rfb->obj);
 		rfb->obj = NULL;
+		drm_framebuffer_unregister_private(&rfb->base);
+		drm_framebuffer_cleanup(&rfb->base);
 	}
 	drm_fb_helper_fini(&rfbdev->helper);
-	drm_framebuffer_unregister_private(&rfb->base);
-	drm_framebuffer_cleanup(&rfb->base);
 
 	return 0;
 }