linux-kernel - RE: [PATCH] drm/amd/powerplay: remove variable 'result' set but not used

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Message-ID: <MN2PR12MB3344A9DA952F41ADDAD6142AE44D0@MN2PR12MB3344.namprd12.prod.outlook.com>
Date:   Mon, 18 Nov 2019 06:50:58 +0000
From:   "Quan, Evan" <Evan.Quan@....com>
To:     Chen Wandun <chenwandun@...wei.com>,
        "Deucher, Alexander" <Alexander.Deucher@....com>,
        "amd-gfx@...ts.freedesktop.org" <amd-gfx@...ts.freedesktop.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] drm/amd/powerplay: remove variable 'result' set but not
 used

Thanks. But it's better to return the 'result' out on 'result != 0'.

Regards,
Evan
-----Original Message-----
From: Chen Wandun <chenwandun@...wei.com> 
Sent: Saturday, November 16, 2019 11:43 AM
To: Deucher, Alexander <Alexander.Deucher@....com>; Quan, Evan <Evan.Quan@....com>; amd-gfx@...ts.freedesktop.org; dri-devel@...ts.freedesktop.org; linux-kernel@...r.kernel.org
Cc: chenwandun@...wei.com
Subject: [PATCH] drm/amd/powerplay: remove variable 'result' set but not used

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/gpu/drm/amd/amdgpu/../powerplay/smumgr/vegam_smumgr.c: In function vegam_populate_smc_boot_level:
drivers/gpu/drm/amd/amdgpu/../powerplay/smumgr/vegam_smumgr.c:1364:6: warning: variable result set but not used [-Wunused-but-set-variable]

Signed-off-by: Chen Wandun <chenwandun@...wei.com>
---
 drivers/gpu/drm/amd/powerplay/smumgr/vegam_smumgr.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/vegam_smumgr.c b/drivers/gpu/drm/amd/powerplay/smumgr/vegam_smumgr.c
index 2068eb0..fad78bf 100644
--- a/drivers/gpu/drm/amd/powerplay/smumgr/vegam_smumgr.c
+++ b/drivers/gpu/drm/amd/powerplay/smumgr/vegam_smumgr.c
@@ -1361,20 +1361,19 @@ static int vegam_populate_smc_uvd_level(struct pp_hwmgr *hwmgr,
 static int vegam_populate_smc_boot_level(struct pp_hwmgr *hwmgr,
 		struct SMU75_Discrete_DpmTable *table)
 {
-	int result = 0;
 	struct smu7_hwmgr *data = (struct smu7_hwmgr *)(hwmgr->backend);
 
 	table->GraphicsBootLevel = 0;
 	table->MemoryBootLevel = 0;
 
 	/* find boot level from dpm table */
-	result = phm_find_boot_level(&(data->dpm_table.sclk_table),
-			data->vbios_boot_state.sclk_bootup_value,
-			(uint32_t *)&(table->GraphicsBootLevel));
+	phm_find_boot_level(&(data->dpm_table.sclk_table),
+			    data->vbios_boot_state.sclk_bootup_value,
+			    (uint32_t *)&(table->GraphicsBootLevel));
 
-	result = phm_find_boot_level(&(data->dpm_table.mclk_table),
-			data->vbios_boot_state.mclk_bootup_value,
-			(uint32_t *)&(table->MemoryBootLevel));
+	phm_find_boot_level(&(data->dpm_table.mclk_table),
+			    data->vbios_boot_state.mclk_bootup_value,
+			    (uint32_t *)&(table->MemoryBootLevel));
 
 	table->BootVddc  = data->vbios_boot_state.vddc_bootup_value *
 			VOLTAGE_SCALE;
-- 
2.7.4