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drm/amdgpu: Fix for BO move issue 

A user reported a bug on CAPE VERDE system where uvd_v3_1
IP component failed to initialize as there is an issue with
BO move code from one memory to other.

In function amdgpu_mem_visible() called by amdgpu_bo_move(),
when there are no blocks to compare or if we have a single
block then break the loop.

Fixes: 312b4dc11d ("drm/amdgpu: Fix VRAM BO swap issue")
Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Arunpravin Paneer Selvam 2022-10-18 07:08:38 -07:00 committed by Alex Deucher
parent 2abe92c7ad
commit 8273b40486
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
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@ -439,6 +439,9 @@ static bool amdgpu_mem_visible(struct amdgpu_device *adev,
while (cursor.remaining) {
amdgpu_res_next(&cursor, cursor.size);
if (!cursor.remaining)
break;
/* ttm_resource_ioremap only supports contiguous memory */
if (end != cursor.start)
return false;