[PATCH] drm/amdgpu: Restrict PSP OS version read to PF

[Lijo Lazar]

Only physical function can read PSP OS version register on PSP v13.x
SOCs.

Signed-off-by: Lijo Lazar <lijo.lazar at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/psp_v13_0.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/psp_v13_0.c b/drivers/gpu/drm/amd/amdgpu/psp_v13_0.c
index 1997260a8156..96ea64e1bf37 100644
--- a/drivers/gpu/drm/amd/amdgpu/psp_v13_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/psp_v13_0.c
@@ -280,6 +280,9 @@ static inline void psp_v13_0_init_sos_version(struct psp_context *psp)
 {
 	struct amdgpu_device *adev = psp->adev;
 
+	if (amdgpu_sriov_vf(adev))
+		return;
+
 	psp->sos.fw_version = RREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_58);
 }
 
-- 
2.25.1