linux-kernel - Re: [PATCH] drm/imagination: Align rogue_fwif

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <202512241051.keF0EcdF-lkp@intel.com>
Date: Wed, 24 Dec 2025 10:42:18 +0800
From: kernel test robot <lkp@...el.com>
To: Michal Wilczynski <m.wilczynski@...sung.com>,
	Frank Binns <frank.binns@...tec.com>,
	Matt Coster <matt.coster@...tec.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
	Donald Robson <donald.robson@...tec.com>,
	Sarah Walker <sarah.walker@...tec.com>
Cc: oe-kbuild-all@...ts.linux.dev, dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org, kernel test robot <lkp@...el.com>,
	Michal Wilczynski <m.wilczynski@...sung.com>
Subject: Re: [PATCH] drm/imagination: Align rogue_fwif_hwrtdata to 64 bytes

Hi Michal,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 8f0b4cce4481fb22653697cced8d0d04027cb1e8]

url:    https://github.com/intel-lab-lkp/linux/commits/Michal-Wilczynski/drm-imagination-Align-rogue_fwif_hwrtdata-to-64-bytes/20251223-065827
base:   8f0b4cce4481fb22653697cced8d0d04027cb1e8
patch link:    https://lore.kernel.org/r/20251222-fix_imagination-v1-1-0ac80a2ff317%40samsung.com
patch subject: [PATCH] drm/imagination: Align rogue_fwif_hwrtdata to 64 bytes
config: arm64-randconfig-r113-20251224 (https://download.01.org/0day-ci/archive/20251224/202512241051.keF0EcdF-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 11.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251224/202512241051.keF0EcdF-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/202512241051.keF0EcdF-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/imagination/pvr_power.c:62:16: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got unsigned int [usertype] *power_sync @@
   drivers/gpu/drm/imagination/pvr_power.c:62:16: sparse:     expected void const volatile [noderef] __iomem *addr
   drivers/gpu/drm/imagination/pvr_power.c:62:16: sparse:     got unsigned int [usertype] *power_sync

vim +62 drivers/gpu/drm/imagination/pvr_power.c

cc1aeedb98ad34 Sarah Walker 2023-11-22  46  
727538a4bbff07 Sarah Walker 2023-11-22  47  static int
727538a4bbff07 Sarah Walker 2023-11-22  48  pvr_power_send_command(struct pvr_device *pvr_dev, struct rogue_fwif_kccb_cmd *pow_cmd)
727538a4bbff07 Sarah Walker 2023-11-22  49  {
cc1aeedb98ad34 Sarah Walker 2023-11-22  50  	struct pvr_fw_device *fw_dev = &pvr_dev->fw_dev;
cc1aeedb98ad34 Sarah Walker 2023-11-22  51  	u32 slot_nr;
cc1aeedb98ad34 Sarah Walker 2023-11-22  52  	u32 value;
cc1aeedb98ad34 Sarah Walker 2023-11-22  53  	int err;
cc1aeedb98ad34 Sarah Walker 2023-11-22  54  
cc1aeedb98ad34 Sarah Walker 2023-11-22  55  	WRITE_ONCE(*fw_dev->power_sync, 0);
cc1aeedb98ad34 Sarah Walker 2023-11-22  56  
cc1aeedb98ad34 Sarah Walker 2023-11-22  57  	err = pvr_kccb_send_cmd_powered(pvr_dev, pow_cmd, &slot_nr);
cc1aeedb98ad34 Sarah Walker 2023-11-22  58  	if (err)
cc1aeedb98ad34 Sarah Walker 2023-11-22  59  		return err;
cc1aeedb98ad34 Sarah Walker 2023-11-22  60  
cc1aeedb98ad34 Sarah Walker 2023-11-22  61  	/* Wait for FW to acknowledge. */
cc1aeedb98ad34 Sarah Walker 2023-11-22 @62  	return readl_poll_timeout(pvr_dev->fw_dev.power_sync, value, value != 0, 100,
cc1aeedb98ad34 Sarah Walker 2023-11-22  63  				  POWER_SYNC_TIMEOUT_US);
727538a4bbff07 Sarah Walker 2023-11-22  64  }
727538a4bbff07 Sarah Walker 2023-11-22  65  

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