From 2a9c06999f975d4bdffa56d4cfd064d1fe40a881 Mon Sep 17 00:00:00 2001
From: "Prike.Liang" <Prike.Liang@amd.com>
Date: Fri, 5 Jun 2020 17:53:56 +0800
Subject: drm/amdgpu: fix the nullptr issue as for PWR IP not existing in
Git-commit: b6df946ef4b5ae29183b2fdb2d12c381c757b3fb
Patch-mainline: v5.9-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
discovery table
Fixes: c1cf79ca5ced46 ("drm/amdgpu: use IP discovery table for renoir")
This nullptr issue should be specific on the Renoir series during try access the PWR_MISC_CNTL_STATUS
when PWR IP not been detected by discovery table. Moreover the PWR IP not existing in Renoir series is
expected therefore just avoid access PWR register in Renoir series.
Signed-off-by: Prike.Liang <Prike.Liang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 22943773ae31..6b94587df407 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -2856,8 +2856,8 @@ static void gfx_v9_0_init_gfx_power_gating(struct amdgpu_device *adev)
/* program GRBM_REG_SAVE_GFX_IDLE_THRESHOLD to 0x55f0 */
data |= (0x55f0 << RLC_AUTO_PG_CTRL__GRBM_REG_SAVE_GFX_IDLE_THRESHOLD__SHIFT);
WREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_AUTO_PG_CTRL), data);
-
- pwr_10_0_gfxip_control_over_cgpg(adev, true);
+ if (adev->asic_type != CHIP_RENOIR)
+ pwr_10_0_gfxip_control_over_cgpg(adev, true);
}
}
--
2.29.2