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drm/amdgpu: Only overwrite serial if field is empty

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On Aldebaran, the serial may be obtained from the FRU. Only overwrite
the serial with the unique_id if the serial is empty. This will support
printing serial numbers for mGPU devices where there are 2 unique_ids
for the 2 GPUs, but only one serial number for the board

Signed-off-by: Kent Russell <kent.russell@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Kent Russell 2021-12-13 13:58:40 -05:00 committed by Alex Deucher
parent 4ad31fa15b
commit de0af8a65e
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
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@ -1606,7 +1606,8 @@ static void aldebaran_get_unique_id(struct smu_context *smu)
mutex_unlock(&smu->metrics_lock);
adev->unique_id = ((uint64_t)upper32 << 32) | lower32;
sprintf(adev->serial, "%016llx", adev->unique_id);
if (adev->serial[0] == '\0')
sprintf(adev->serial, "%016llx", adev->unique_id);
}
static bool aldebaran_is_baco_supported(struct smu_context *smu)