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amdgpu: Only destroy fbdev framebuffer if it was initialized 

Fixes crash when trying to unload the amdgpu 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>
This commit is contained in:
Michel Dänzer 2017-09-11 17:04:41 +09:00 committed by Alex Deucher
parent c9232d9ee8
commit a072c5f896
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
View File

@ -303,10 +303,10 @@ static int amdgpu_fbdev_destroy(struct drm_device *dev, struct amdgpu_fbdev *rfb
if (rfb->obj) {
amdgpufb_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;
}