5.15-stable review patch. If anyone has any objections, please let me know.
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From: Mario Limonciello mario.limonciello@amd.com
commit ed4efe426a49729952b3dc05d20e33b94409bdd1 upstream.
The power limit will be cached in smu->current_power_limit but if the ASIC goes into S3 this value won't be restored.
Restore the value during SMU resume.
Acked-by: Alex Deucher alexander.deucher@amd.com Link: https://lore.kernel.org/r/20250725031222.3015095-2-superm1@kernel.org Signed-off-by: Mario Limonciello mario.limonciello@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com (cherry picked from commit 26a609e053a6fc494403e95403bc6a2470383bec) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 6 ++++++ 1 file changed, 6 insertions(+)
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c +++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c @@ -1573,6 +1573,12 @@ static int smu_resume(void *handle)
adev->pm.dpm_enabled = true;
+ if (smu->current_power_limit) { + ret = smu_set_power_limit(smu, smu->current_power_limit); + if (ret && ret != -EOPNOTSUPP) + return ret; + } + dev_info(adev->dev, "SMU is resumed successfully!\n");
return 0;