Commit 93002849 authored by Evan Quan's avatar Evan Quan Committed by Alex Deucher

drm/amd/powerplay: maintain SMU FW backward compatibility

Do not halt driver loading on if_version mismatch. As our
driver and FWs are backward compatible.
Signed-off-by: default avatarEvan Quan <evan.quan@amd.com>
Reviewed-by: default avatarKenneth Feng <kenneth.feng@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 0d9d78b5
......@@ -261,14 +261,20 @@ static int smu_v11_0_check_fw_version(struct smu_context *smu)
smu_minor = (smu_version >> 8) & 0xff;
smu_debug = (smu_version >> 0) & 0xff;
/*
* 1. if_version mismatch is not critical as our fw is designed
* to be backward compatible.
* 2. New fw usually brings some optimizations. But that's visible
* only on the paired driver.
* Considering above, we just leave user a warning message instead
* of halt driver loading.
*/
if (if_version != smu->smc_if_version) {
pr_info("smu driver if version = 0x%08x, smu fw if version = 0x%08x, "
"smu fw version = 0x%08x (%d.%d.%d)\n",
smu->smc_if_version, if_version,
smu_version, smu_major, smu_minor, smu_debug);
pr_err("SMU driver if version not matched\n");
ret = -EINVAL;
pr_warn("SMU driver if version not matched\n");
}
return ret;
......
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