linux-kernel - Re: [PATCH v8 2/2] drm/msm/dp: clean up pixel_rate from dp

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Date:   Fri, 17 Jun 2022 05:06:10 +0800
From:   kernel test robot <lkp@...el.com>
To:     Kuogee Hsieh <quic_khsieh@...cinc.com>,
        dri-devel@...ts.freedesktop.org, robdclark@...il.com,
        sean@...rly.run, swboyd@...omium.org, dianders@...omium.org,
        vkoul@...nel.org, daniel@...ll.ch, airlied@...ux.ie,
        agross@...nel.org, dmitry.baryshkov@...aro.org,
        bjorn.andersson@...aro.org
Cc:     kbuild-all@...ts.01.org, quic_sbillaka@...cinc.com,
        linux-arm-msm@...r.kernel.org, quic_abhinavk@...cinc.com,
        Kuogee Hsieh <quic_khsieh@...cinc.com>,
        quic_aravindh@...cinc.com, freedreno@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v8 2/2] drm/msm/dp: clean up pixel_rate from dp_ctrl.c

Hi Kuogee,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on drm/drm-next]
[also build test WARNING on drm-exynos/exynos-drm-next drm-tip/drm-tip linus/master v5.19-rc2 next-20220616]
[cannot apply to drm-intel/for-linux-next tegra-drm/drm/tegra/for-next]
[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]

url:    https://github.com/intel-lab-lkp/linux/commits/Kuogee-Hsieh/force-link-training-for-display-resolution-change/20220617-011110
base:   git://anongit.freedesktop.org/drm/drm drm-next
config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20220617/202206170505.2U1jLZVk-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 11.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/b04f0b39a03a9fc3728e9414157f9d5f0b8b2366
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Kuogee-Hsieh/force-link-training-for-display-resolution-change/20220617-011110
        git checkout b04f0b39a03a9fc3728e9414157f9d5f0b8b2366
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash drivers/gpu/drm/msm/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/msm/dp/dp_ctrl.c:1587:5: warning: no previous prototype for 'dp_ctrl_on_stream_phy_test_report' [-Wmissing-prototypes]
    1587 | int dp_ctrl_on_stream_phy_test_report(struct dp_ctrl *dp_ctrl)
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/dp_ctrl_on_stream_phy_test_report +1587 drivers/gpu/drm/msm/dp/dp_ctrl.c

  1586	
> 1587	int dp_ctrl_on_stream_phy_test_report(struct dp_ctrl *dp_ctrl)
  1588	{
  1589		int ret = 0;
  1590		struct dp_ctrl_private *ctrl;
  1591		unsigned long pixel_rate;
  1592	
  1593		ctrl = container_of(dp_ctrl, struct dp_ctrl_private, dp_ctrl);
  1594	
  1595		pixel_rate = ctrl->panel->dp_mode.drm_mode.clock;
  1596		ret = dp_ctrl_enable_stream_clocks(ctrl, pixel_rate);
  1597		if (ret) {
  1598			DRM_ERROR("Failed to start pixel clocks. ret=%d\n", ret);
  1599			return ret;
  1600		}
  1601	
  1602		dp_ctrl_send_phy_test_pattern(ctrl);
  1603	
  1604		return 0;
  1605	}
  1606	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp