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Subject[PATCH AUTOSEL for 4.9 34/54] drm/amdgpu: fix unload driver issue for virtual display
Date
From: Xiangliang Yu <Xiangliang.Yu@amd.com>

[ Upstream commit 3a1d19a29670aa7eb58576a31883d0aa9fb77549 ]

Virtual display doesn't allocate amdgpu_encoder when initializing,
so will get invaild pointer if try to free amdgpu_encoder when
unloading driver.

Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
---
drivers/gpu/drm/amd/amdgpu/dce_virtual.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/dce_virtual.c b/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
index c2bd9f045532..6d75fd0e3105 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
@@ -565,11 +565,8 @@ static const struct drm_encoder_helper_funcs dce_virtual_encoder_helper_funcs =

static void dce_virtual_encoder_destroy(struct drm_encoder *encoder)
{
- struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
-
- kfree(amdgpu_encoder->enc_priv);
drm_encoder_cleanup(encoder);
- kfree(amdgpu_encoder);
+ kfree(encoder);
}

static const struct drm_encoder_funcs dce_virtual_encoder_funcs = {
--
2.11.0
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