linux-kernel - [PATCH v4 03/13] drm/amdgpu: fix error handling in amdgpu_copy

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Message-ID: <20251202094738.15614-4-pierre-eric.pelloux-prayer@amd.com>
Date: Tue, 2 Dec 2025 10:47:13 +0100
From: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@....com>
To: Alex Deucher <alexander.deucher@....com>,
	Christian König <christian.koenig@....com>, David Airlie
	<airlied@...il.com>, Simona Vetter <simona@...ll.ch>
CC: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@....com>,
	<amd-gfx@...ts.freedesktop.org>, <dri-devel@...ts.freedesktop.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH v4 03/13] drm/amdgpu: fix error handling in amdgpu_copy_buffer

drm_sched_job_add_resv_dependencies can fail in amdgpu_ttm_prepare_job.
In this case we need to use amdgpu_job_free to release memory.

---
v4: moved job pointer clearing to a different patchset
---

Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@....com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index ae3ad19667df..6e8b6fd94378 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -2278,7 +2278,7 @@ int amdgpu_copy_buffer(struct amdgpu_device *adev, uint64_t src_offset,
 				   resv, vm_needs_flush, &job, false,
 				   AMDGPU_KERNEL_JOB_ID_TTM_COPY_BUFFER);
 	if (r)
-		return r;
+		goto error_free;
 
 	for (i = 0; i < num_loops; i++) {
 		uint32_t cur_size_in_bytes = min(byte_count, max_bytes);
@@ -2290,11 +2290,9 @@ int amdgpu_copy_buffer(struct amdgpu_device *adev, uint64_t src_offset,
 		byte_count -= cur_size_in_bytes;
 	}
 
-	if (r)
-		goto error_free;
 	*fence = amdgpu_ttm_job_submit(adev, job, num_dw);
 
-	return r;
+	return 0;
 
 error_free:
 	amdgpu_job_free(job);
-- 
2.43.0