linux-kernel - [PATCH] drm/amd/pm: Fix an error handling path in vega10_enable_se_edc_force_stall

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Message-ID: <6584a62da5436ffd726d68e5dbdaf5eadde8af9d.1732047767.git.christophe.jaillet@wanadoo.fr>
Date: Tue, 19 Nov 2024 21:23:18 +0100
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: Kenneth Feng <kenneth.feng@....com>,
	Alex Deucher <alexander.deucher@....com>,
	Christian König <christian.koenig@....com>,
	Xinhui Pan <Xinhui.Pan@....com>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	Evan Quan <evan.quan@....com>
Cc: linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>,
	amd-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org
Subject: [PATCH] drm/amd/pm: Fix an error handling path in vega10_enable_se_edc_force_stall_config()

In case of error after a amdgpu_gfx_rlc_enter_safe_mode() call, it is not
balanced by a corresponding amdgpu_gfx_rlc_exit_safe_mode() call.

Add the missing call.

Fixes: 9b7b8154cdb8 ("drm/amd/powerplay: added didt support for vega10")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
*Not* even compile tested only because of missing "hwmgr.h". I've not
checked on which arch it is supposed to run in order to cross-compile.

This patch is speculative, review with care!
---
 drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_powertune.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_powertune.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_powertune.c
index 3007b054c873..776d58ea63ae 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_powertune.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_powertune.c
@@ -1120,13 +1120,14 @@ static int vega10_enable_se_edc_force_stall_config(struct pp_hwmgr *hwmgr)
 	result = vega10_program_didt_config_registers(hwmgr, SEEDCForceStallPatternConfig_Vega10, VEGA10_CONFIGREG_DIDT);
 	result |= vega10_program_didt_config_registers(hwmgr, SEEDCCtrlForceStallConfig_Vega10, VEGA10_CONFIGREG_DIDT);
 	if (0 != result)
-		return result;
+		goto exit_safe_mode;
 
 	vega10_didt_set_mask(hwmgr, false);
 
+exit_safe_mode:
 	amdgpu_gfx_rlc_exit_safe_mode(adev, 0);
 
-	return 0;
+	return result;
 }
 
 static int vega10_disable_se_edc_force_stall_config(struct pp_hwmgr *hwmgr)
-- 
2.47.0