linux-kernel - Re: [PATCH v2 16/19] drm/amd/display: Add parameter to control ALLM behavior

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Message-ID: <202601262238.uxN6zVAN-lkp@intel.com>
Date: Mon, 26 Jan 2026 22:38:46 +0800
From: kernel test robot <lkp@...el.com>
To: Tomasz Pakuła <tomasz.pakula.oficjalny@...il.com>,
	alexander.deucher@....com, harry.wentland@....com,
	sunpeng.li@....com
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	maarten.lankhorst@...ux.intel.com, mripard@...nel.org,
	tzimmermann@...e.de, airlied@...il.com, simona@...ll.ch,
	siqueira@...lia.com, dri-devel@...ts.freedesktop.org,
	amd-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	tomasz.pakula.oficjalny@...il.com, bernhard.berger@...il.com,
	michel.daenzer@...lbox.org, daniel@...ishbar.org
Subject: Re: [PATCH v2 16/19] drm/amd/display: Add parameter to control ALLM
 behavior

Hi Tomasz,

kernel test robot noticed the following build errors:

[auto build test ERROR on next-20260123]
[cannot apply to drm-misc/drm-misc-next v6.19-rc6 v6.19-rc5 v6.19-rc4 linus/master v6.19-rc7]
[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/Tomasz-Paku-a/drm-amd-display-Return-if-DisplayID-not-found-in-parse_amd_vsdb/20260126-024258
base:   next-20260123
patch link:    https://lore.kernel.org/r/20260125183914.459228-17-tomasz.pakula.oficjalny%40gmail.com
patch subject: [PATCH v2 16/19] drm/amd/display: Add parameter to control ALLM behavior
config: i386-randconfig-012-20260126 (https://download.01.org/0day-ci/archive/20260126/202601262238.uxN6zVAN-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260126/202601262238.uxN6zVAN-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/202601262238.uxN6zVAN-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c:1129:4: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
    1129 |  * DOC: hdmi_hpd_debounce_delay_ms (uint)
         |    ^
         |  int
>> drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c:1129:7: error: expected ';' after top level declarator
    1129 |  * DOC: hdmi_hpd_debounce_delay_ms (uint)
         |       ^
         |       ;
>> drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c:1130:2: error: expected function body after function declarator
    1130 |  * HDMI HPD disconnect debounce delay in milliseconds.
         |  ^
   3 errors generated.


vim +/int +1129 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

a96a787d6de732 Alex Deucher  2025-02-18  1127  
ee725b1d954d29 Tomasz Pakuła 2026-01-25  1128  /** */
6a681cd9034587 Ivan Lipski   2026-01-13 @1129   * DOC: hdmi_hpd_debounce_delay_ms (uint)
6a681cd9034587 Ivan Lipski   2026-01-13 @1130   * HDMI HPD disconnect debounce delay in milliseconds.
6a681cd9034587 Ivan Lipski   2026-01-13  1131   *
6a681cd9034587 Ivan Lipski   2026-01-13  1132   * Used to filter short disconnect->reconnect HPD toggles some HDMI sinks
6a681cd9034587 Ivan Lipski   2026-01-13  1133   * generate while entering/leaving power save. Set to 0 to disable by default.
6a681cd9034587 Ivan Lipski   2026-01-13  1134   */
6a681cd9034587 Ivan Lipski   2026-01-13  1135  MODULE_PARM_DESC(hdmi_hpd_debounce_delay_ms, "HDMI HPD disconnect debounce delay in milliseconds (0 to disable (by default), 1500 is common)");
6a681cd9034587 Ivan Lipski   2026-01-13  1136  module_param_named(hdmi_hpd_debounce_delay_ms, amdgpu_hdmi_hpd_debounce_delay_ms, uint, 0644);
6a681cd9034587 Ivan Lipski   2026-01-13  1137  

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