linux-kernel - [PATCH 5.13 026/113] drm/amdgpu: use the preferred pin domain after the check

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Message-Id: <20210901122302.874591692@linuxfoundation.org>
Date:   Wed,  1 Sep 2021 14:27:41 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Shashank Sharma <Shashank.sharma@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>
Subject: [PATCH 5.13 026/113] drm/amdgpu: use the preferred pin domain after the check

From: Christian König <christian.koenig@....com>

commit 2a7b9a8437130fd328001f4edfac8eec98dfe298 upstream.

For some reason we run into an use case where a BO is already pinned
into GTT, but should be pinned into VRAM|GTT again.

Handle that case gracefully as well.

Reviewed-by: Shashank Sharma <Shashank.sharma@....com>
Reviewed-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Christian König <christian.koenig@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Cc: stable@...r.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_object.c |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -937,11 +937,6 @@ int amdgpu_bo_pin_restricted(struct amdg
 			return -EINVAL;
 	}
 
-	/* This assumes only APU display buffers are pinned with (VRAM|GTT).
-	 * See function amdgpu_display_supported_domains()
-	 */
-	domain = amdgpu_bo_get_preferred_pin_domain(adev, domain);
-
 	if (bo->tbo.pin_count) {
 		uint32_t mem_type = bo->tbo.mem.mem_type;
 		uint32_t mem_flags = bo->tbo.mem.placement;
@@ -966,6 +961,11 @@ int amdgpu_bo_pin_restricted(struct amdg
 		return 0;
 	}
 
+	/* This assumes only APU display buffers are pinned with (VRAM|GTT).
+	 * See function amdgpu_display_supported_domains()
+	 */
+	domain = amdgpu_bo_get_preferred_pin_domain(adev, domain);
+
 	if (bo->tbo.base.import_attach)
 		dma_buf_pin(bo->tbo.base.import_attach);