From: Evan Quan <evan.quan@amd.com>
Date: Wed, 30 Sep 2020 04:07:56 +0000 (+0800)
Subject: drm/amd/pm: setup APU dpm clock table in SMU HW initialization
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b195152536237acf65962b703394614d9c4d307b;p=linux.git

drm/amd/pm: setup APU dpm clock table in SMU HW initialization

As the dpm clock table is needed during DC HW initialization.
And that (DC HW initialization) comes before smu_late_init()
where current APU dpm clock table setup is performed. So, NULL
pointer dereference will be triggered. By moving APU dpm clock
table setup to smu_hw_init(), this can be avoided.

Fixes: 02cf91c113ea ("drm/amd/powerplay: postpone operations not required for hw setup to late_init")
Acked-by: Nirmoy Das <nirmoy.das@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reported-by: Dirk Gouders <dirk@gouders.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index 63f945f9f3317..8dc5abb6931e9 100644
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -479,17 +479,6 @@ static int smu_late_init(void *handle)
 		return ret;
 	}
 
-	/*
-	 * Set initialized values (get from vbios) to dpm tables context such as
-	 * gfxclk, memclk, dcefclk, and etc. And enable the DPM feature for each
-	 * type of clks.
-	 */
-	ret = smu_set_default_dpm_table(smu);
-	if (ret) {
-		dev_err(adev->dev, "Failed to setup default dpm clock tables!\n");
-		return ret;
-	}
-
 	ret = smu_populate_umd_state_clk(smu);
 	if (ret) {
 		dev_err(adev->dev, "Failed to populate UMD state clocks!\n");
@@ -984,6 +973,17 @@ static int smu_smc_hw_setup(struct smu_context *smu)
 		return ret;
 	}
 
+	/*
+	 * Set initialized values (get from vbios) to dpm tables context such as
+	 * gfxclk, memclk, dcefclk, and etc. And enable the DPM feature for each
+	 * type of clks.
+	 */
+	ret = smu_set_default_dpm_table(smu);
+	if (ret) {
+		dev_err(adev->dev, "Failed to setup default dpm clock tables!\n");
+		return ret;
+	}
+
 	ret = smu_notify_display_change(smu);
 	if (ret)
 		return ret;