[PATCH] drm/amdgpu: Ignore stop rlc on SRIOV environment.

[Wang, Yang(Kevin)]

[AMD Official Use Only - General]

Reviewed-by: Yang Wang <kevinyang.wang at amd.com>

Best Regards,
Kevin

-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Gavin Wan
Sent: Thursday, November 10, 2022 2:24 AM
To: amd-gfx at lists.freedesktop.org
Cc: Wan, Gavin <Gavin.Wan at amd.com>
Subject: [PATCH] drm/amdgpu: Ignore stop rlc on SRIOV environment.

For SRIOV, the guest driver should not do stop rlc. The host handles programing RLC.

On SRIOV, the stop rlc will be hang (RLC related registers are blocked by policy) when the RLCG interface is not enabled.

Signed-off-by: Gavin Wan <Gavin.Wan at amd.com>
Change-Id: Iac31332e2c958aae9506759de1d3a311b5c84942
---
 drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index 4fe75dd2b329..0e9529b95d35 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -1517,7 +1517,7 @@ static int smu_disable_dpms(struct smu_context *smu)
        }

        if (adev->ip_versions[GC_HWIP][0] >= IP_VERSION(9, 4, 2) &&
-           adev->gfx.rlc.funcs->stop)
+           !amdgpu_sriov_vf(adev) && adev->gfx.rlc.funcs->stop)
                adev->gfx.rlc.funcs->stop(adev);

        return ret;
--
2.34.1