linux-kernel - Re: [PATCH v3 1/5] drm/bridge: cadence: cdns-mhdp8546-core: Remove legacy support for connector initialisation in bridge

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Message-ID: <202505300201.2s6r12yc-lkp@intel.com>
Date: Fri, 30 May 2025 02:20:28 +0800
From: kernel test robot <lkp@...el.com>
To: Jayesh Choudhary <j-choudhary@...com>, dianders@...omium.org,
	andrzej.hajda@...el.com, neil.armstrong@...aro.org,
	rfoss@...nel.org, Laurent.pinchart@...asonboard.com,
	dri-devel@...ts.freedesktop.org, tomi.valkeinen@...asonboard.com,
	andyshrk@....com
Cc: oe-kbuild-all@...ts.linux.dev, jonas@...boo.se,
	jernej.skrabec@...il.com, maarten.lankhorst@...ux.intel.com,
	mripard@...nel.org, tzimmermann@...e.de, airlied@...il.com,
	simona@...ll.ch, lumag@...nel.org, lyude@...hat.com,
	andy.yan@...k-chips.com, mordan@...ras.ru, linux@...blig.org,
	viro@...iv.linux.org.uk, a-bhatia1@...com, javierm@...hat.com,
	linux-kernel@...r.kernel.org, devarsht@...com, j-choudhary@...com
Subject: Re: [PATCH v3 1/5] drm/bridge: cadence: cdns-mhdp8546-core: Remove
 legacy support for connector initialisation in bridge

Hi Jayesh,

kernel test robot noticed the following build warnings:

[auto build test WARNING on drm-exynos/exynos-drm-next]
[also build test WARNING on linus/master v6.15 next-20250529]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Jayesh-Choudhary/drm-bridge-cadence-cdns-mhdp8546-core-Remove-legacy-support-for-connector-initialisation-in-bridge/20250529-222734
base:   https://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git exynos-drm-next
patch link:    https://lore.kernel.org/r/20250529142517.188786-2-j-choudhary%40ti.com
patch subject: [PATCH v3 1/5] drm/bridge: cadence: cdns-mhdp8546-core: Remove legacy support for connector initialisation in bridge
config: riscv-randconfig-002-20250530 (https://download.01.org/0day-ci/archive/20250530/202505300201.2s6r12yc-lkp@intel.com/config)
compiler: riscv32-linux-gcc (GCC) 10.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250530/202505300201.2s6r12yc-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202505300201.2s6r12yc-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c: In function 'cdns_mhdp_hpd_work':
>> drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c:2210:6: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
    2210 |  int ret;
         |      ^~~


vim +/ret +2210 drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c

6a3608eae6d33a Parshuram Thombare 2021-04-10  2204  
6a3608eae6d33a Parshuram Thombare 2021-04-10  2205  static void cdns_mhdp_hpd_work(struct work_struct *work)
6a3608eae6d33a Parshuram Thombare 2021-04-10  2206  {
6a3608eae6d33a Parshuram Thombare 2021-04-10  2207  	struct cdns_mhdp_device *mhdp = container_of(work,
6a3608eae6d33a Parshuram Thombare 2021-04-10  2208  						     struct cdns_mhdp_device,
6a3608eae6d33a Parshuram Thombare 2021-04-10  2209  						     hpd_work);
6a3608eae6d33a Parshuram Thombare 2021-04-10 @2210  	int ret;
6a3608eae6d33a Parshuram Thombare 2021-04-10  2211  
fb43aa0acdfd60 Swapnil Jakhade    2020-09-18  2212  	ret = cdns_mhdp_update_link_status(mhdp);
f25484d2ec5e5a Jayesh Choudhary   2025-05-29  2213  
fb43aa0acdfd60 Swapnil Jakhade    2020-09-18  2214  	drm_bridge_hpd_notify(&mhdp->bridge, cdns_mhdp_detect(mhdp));
fb43aa0acdfd60 Swapnil Jakhade    2020-09-18  2215  }
fb43aa0acdfd60 Swapnil Jakhade    2020-09-18  2216  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki