[PATCH v2 1/2] drm/amd/amdgpu: fix psp tmr bo pin count leak in SRIOV

[Chen, Horace]

[AMD Official Use Only]

Reviewed-by: Horace Chen <horace.chen at amd.com>

-----Original Message-----
From: Chen, JingWen <JingWen.Chen2 at amd.com>
Sent: Tuesday, December 14, 2021 12:18 PM
To: amd-gfx at lists.freedesktop.org
Cc: Liu, Monk <Monk.Liu at amd.com>; Chen, Horace <Horace.Chen at amd.com>; Chen, JingWen <JingWen.Chen2 at amd.com>
Subject: [PATCH v2 1/2] drm/amd/amdgpu: fix psp tmr bo pin count leak in SRIOV

[Why]
psp tmr bo will be pinned during loading amdgpu and reset in SRIOV while only unpinned in unload amdgpu

[How]
add amdgpu_in_reset and sriov judgement to skip pin bo

v2: fix wrong judgement

Signed-off-by: Jingwen Chen <Jingwen.Chen2 at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index 103bcadbc8b8..4de46fcb486c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -2017,12 +2017,16 @@ static int psp_hw_start(struct psp_context *psp)
                return ret;
        }

+       if (amdgpu_sriov_vf(adev) && amdgpu_in_reset(adev))
+               goto skip_pin_bo;
+
        ret = psp_tmr_init(psp);
        if (ret) {
                DRM_ERROR("PSP tmr init failed!\n");
                return ret;
        }

+skip_pin_bo:
        /*
         * For ASICs with DF Cstate management centralized
         * to PMFW, TMR setup should be performed after PMFW
--
2.30.2