linux-kernel - [PATCH 4.15 031/146] drm/amd/powerplay: fix power over limit on Fiji

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Message-Id: <20180313152322.932778684@linuxfoundation.org>
Date:   Tue, 13 Mar 2018 16:23:18 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Eric Huang <JinHuiEric.Huang@....com>,
        Felix Kuehling <Felix.Kuehling@....com>,
        Alex Deucher <alexander.deucher@....com>
Subject: [PATCH 4.15 031/146] drm/amd/powerplay: fix power over limit on Fiji

4.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Eric Huang <JinHuiEric.Huang@....com>

commit a0aaa03062be252aacad60a776f3374dd53e3f98 upstream.

power containment disabled only on Fiji and compute
power profile. It violates PCIe spec and may cause power
supply failed. Enabling it will fix the issue, even the
fix will drop performance of some compute tests.

Signed-off-by: Eric Huang <JinHuiEric.Huang@....com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Cc: stable@...r.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c |    7 -------
 1 file changed, 7 deletions(-)

--- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
@@ -4572,13 +4572,6 @@ static int smu7_set_power_profile_state(
 	int tmp_result, result = 0;
 	uint32_t sclk_mask = 0, mclk_mask = 0;
 
-	if (hwmgr->chip_id == CHIP_FIJI) {
-		if (request->type == AMD_PP_GFX_PROFILE)
-			smu7_enable_power_containment(hwmgr);
-		else if (request->type == AMD_PP_COMPUTE_PROFILE)
-			smu7_disable_power_containment(hwmgr);
-	}
-
 	if (hwmgr->dpm_level != AMD_DPM_FORCED_LEVEL_AUTO)
 		return -EINVAL;