From: Kent Russell Date: Mon, 13 Dec 2021 18:58:40 +0000 (-0500) Subject: drm/amdgpu: Only overwrite serial if field is empty X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=de0af8a65ea3c56e85517d23316679eacddb7a45;p=linux.git drm/amdgpu: Only overwrite serial if field is empty 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 Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c index 0e60d63ba94f1..380811b913503 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c @@ -1606,7 +1606,8 @@ out_unlock: 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)