drm/amd/amdgpu: fix refcount leak

[Why]
the gem object rfb->base.obj[0] is get according to num_planes
in amdgpufb_create, but is not put according to num_planes

[How]
put rfb->base.obj[0] in amdgpu_fbdev_destroy according to num_planes

Signed-off-by: Jingwen Chen <Jingwen.Chen2@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
index 4f10c45..09b0486 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
@@ -288,10 +288,13 @@ out:
 static int amdgpu_fbdev_destroy(struct drm_device *dev, struct amdgpu_fbdev *rfbdev)
 {
        struct amdgpu_framebuffer *rfb = &rfbdev->rfb;
+       int i;
 
        drm_fb_helper_unregister_fbi(&rfbdev->helper);
 
        if (rfb->base.obj[0]) {
+               for (i = 0; i < rfb->base.format->num_planes; i++)
+                       drm_gem_object_put(rfb->base.obj[0]);
                amdgpufb_destroy_pinned_object(rfb->base.obj[0]);
                rfb->base.obj[0] = NULL;
                drm_framebuffer_unregister_private(&rfb->base);