linux-kernel - Re: [PATCH 2/3] drm/client: Support emergency restore via sysrq for all clients

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Message-ID: <202511101950.bIUDG3LX-lkp@intel.com>
Date: Mon, 10 Nov 2025 20:12:27 +0800
From: kernel test robot <lkp@...el.com>
To: Thomas Zimmermann <tzimmermann@...e.de>, jfalempe@...hat.com,
	javierm@...hat.com, simona@...ll.ch, airlied@...il.com,
	mripard@...nel.org, maarten.lankhorst@...ux.intel.com,
	gregkh@...uxfoundation.org, jirislaby@...nel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org,
	Thomas Zimmermann <tzimmermann@...e.de>
Subject: Re: [PATCH 2/3] drm/client: Support emergency restore via sysrq for
 all clients

Hi Thomas,

kernel test robot noticed the following build warnings:

[auto build test WARNING on next-20251107]
[cannot apply to drm/drm-next drm-exynos/exynos-drm-next drm-intel/for-linux-next drm-intel/for-linux-next-fixes drm-misc/drm-misc-next drm-tip/drm-tip linus/master v6.18-rc4 v6.18-rc3 v6.18-rc2 v6.18-rc5]
[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/Thomas-Zimmermann/drm-client-Pass-force-parameter-to-client-restore/20251107-223026
base:   next-20251107
patch link:    https://lore.kernel.org/r/20251107142612.467817-3-tzimmermann%40suse.de
patch subject: [PATCH 2/3] drm/client: Support emergency restore via sysrq for all clients
config: powerpc64-randconfig-001-20251110 (https://download.01.org/0day-ci/archive/20251110/202511101950.bIUDG3LX-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 0d786b9a207aa0e6d88dde7fd9ffe0b364db69a4)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251110/202511101950.bIUDG3LX-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/202511101950.bIUDG3LX-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/gpu/drm/drm_debugfs_crc.c:41:
>> drivers/gpu/drm/drm_internal.h:64:6: warning: no previous prototype for function 'drm_client_sysrq_register' [-Wmissing-prototypes]
      64 | void drm_client_sysrq_register(struct drm_device *dev)
         |      ^
   drivers/gpu/drm/drm_internal.h:64:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
      64 | void drm_client_sysrq_register(struct drm_device *dev)
         | ^
         | static 
>> drivers/gpu/drm/drm_internal.h:66:6: warning: no previous prototype for function 'drm_client_sysrq_unregister' [-Wmissing-prototypes]
      66 | void drm_client_sysrq_unregister(struct drm_device *dev)
         |      ^
   drivers/gpu/drm/drm_internal.h:66:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
      66 | void drm_client_sysrq_unregister(struct drm_device *dev)
         | ^
         | static 
   2 warnings generated.


vim +/drm_client_sysrq_register +64 drivers/gpu/drm/drm_internal.h

    58	
    59	/* drm_client_sysrq.c */
    60	#if defined(CONFIG_DRM_CLIENT) && defined(CONFIG_MAGIC_SYSRQ)
    61	void drm_client_sysrq_register(struct drm_device *dev);
    62	void drm_client_sysrq_unregister(struct drm_device *dev);
    63	#else
  > 64	void drm_client_sysrq_register(struct drm_device *dev)
    65	{ }
  > 66	void drm_client_sysrq_unregister(struct drm_device *dev)
    67	{ }
    68	#endif
    69	

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