linux-kernel - Re: [PATCH] drm/nouveau: Support reclocking on gp10b

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Message-ID: <202508232014.eQOclzLG-lkp@intel.com>
Date: Sat, 23 Aug 2025 20:28:18 +0800
From: kernel test robot <lkp@...el.com>
To: Aaron Kling via B4 Relay <devnull+webgeek1234.gmail.com@...nel.org>,
	Lyude Paul <lyude@...hat.com>, Danilo Krummrich <dakr@...nel.org>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, nouveau@...ts.freedesktop.org,
	Aaron Kling <webgeek1234@...il.com>
Subject: Re: [PATCH] drm/nouveau: Support reclocking on gp10b

Hi Aaron,

kernel test robot noticed the following build warnings:

[auto build test WARNING on c17b750b3ad9f45f2b6f7e6f7f4679844244f0b9]

url:    https://github.com/intel-lab-lkp/linux/commits/Aaron-Kling-via-B4-Relay/drm-nouveau-Support-reclocking-on-gp10b/20250823-090132
base:   c17b750b3ad9f45f2b6f7e6f7f4679844244f0b9
patch link:    https://lore.kernel.org/r/20250822-gp10b-reclock-v1-1-5b03eaf3735a%40gmail.com
patch subject: [PATCH] drm/nouveau: Support reclocking on gp10b
config: x86_64-buildonly-randconfig-005-20250823 (https://download.01.org/0day-ci/archive/20250823/202508232014.eQOclzLG-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250823/202508232014.eQOclzLG-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/202508232014.eQOclzLG-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/nouveau/nvkm/subdev/clk/gp10b.c:30:1: warning: no previous prototype for 'gp10b_clk_read' [-Wmissing-prototypes]
      30 | gp10b_clk_read(struct nvkm_clk *base, enum nv_clk_src src)
         | ^~~~~~~~~~~~~~


vim +/gp10b_clk_read +30 drivers/gpu/drm/nouveau/nvkm/subdev/clk/gp10b.c

    28	
    29	int
  > 30	gp10b_clk_read(struct nvkm_clk *base, enum nv_clk_src src)
    31	{
    32		struct gp10b_clk *clk = gp10b_clk(base);
    33		struct nvkm_subdev *subdev = &clk->base.subdev;
    34	
    35		switch (src) {
    36		case nv_clk_src_gpc:
    37			return clk_get_rate(clk->clk) / GK20A_CLK_GPC_MDIV;
    38		default:
    39			nvkm_error(subdev, "invalid clock source %d\n", src);
    40			return -EINVAL;
    41		}
    42	}
    43	

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