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Date:   Thu, 1 Jun 2023 22:37:30 +0800
From:   kernel test robot <lkp@intel.com>
To:     Lu Hongfei <luhongfei@vivo.com>,
        Artur Weber <aweber.kernel@gmail.com>,
        Neil Armstrong <neil.armstrong@linaro.org>,
        Sam Ravnborg <sam@ravnborg.org>,
        David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>,
        "open list:DRM PANEL DRIVERS" <dri-devel@lists.freedesktop.org>,
        open list <linux-kernel@vger.kernel.org>
Cc:     oe-kbuild-all@lists.linux.dev, opensource.kernel@vivo.com,
        luhongfei@vivo.com
Subject: Re: [PATCH] gpu: drm/panel: Optimize the workflow of s6d7aa0_lock
Message-ID: <202306012249.Sm2dlQLk-lkp@intel.com>
References: <20230531110717.36896-1-luhongfei@vivo.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20230531110717.36896-1-luhongfei@vivo.com>
Precedence: bulk

Hi Lu,

kernel test robot noticed the following build errors:

[auto build test ERROR on drm-misc/drm-misc-next]
[also build test ERROR on next-20230601]
[cannot apply to linus/master v6.4-rc4]
[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/Lu-Hongfei/gpu-drm-panel-Optimize-the-workflow-of-s6d7aa0_lock/20230531-190848
base:   git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link:    https://lore.kernel.org/r/20230531110717.36896-1-luhongfei%40vivo.com
patch subject: [PATCH] gpu: drm/panel: Optimize the workflow of s6d7aa0_lock
config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20230601/202306012249.Sm2dlQLk-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 12.3.0
reproduce (this is a W=1 build):
        mkdir -p ~/bin
        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/e1ade7d20fb0efb9aa0b332d5ac5da2863f8e68e
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Lu-Hongfei/gpu-drm-panel-Optimize-the-workflow-of-s6d7aa0_lock/20230531-190848
        git checkout e1ade7d20fb0efb9aa0b332d5ac5da2863f8e68e
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/gpu/drm/panel/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202306012249.Sm2dlQLk-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c:17:
   drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c: In function 's6d7aa0_lock':
>> include/drm/drm_mipi_dsi.h:326:9: error: expected expression before 'do'
     326 |         do {                                                               \
         |         ^~
   drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c:72:23: note: in expansion of macro 'mipi_dsi_dcs_write_seq'
      72 |                 ret = mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD1, 0xa5, 0xa5);
         |                       ^~~~~~~~~~~~~~~~~~~~~~
>> include/drm/drm_mipi_dsi.h:326:9: error: expected expression before 'do'
     326 |         do {                                                               \
         |         ^~
   drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c:75:23: note: in expansion of macro 'mipi_dsi_dcs_write_seq'
      75 |                 ret = mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD2, 0xa5, 0xa5);
         |                       ^~~~~~~~~~~~~~~~~~~~~~
>> include/drm/drm_mipi_dsi.h:326:9: error: expected expression before 'do'
     326 |         do {                                                               \
         |         ^~
   drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c:79:31: note: in expansion of macro 'mipi_dsi_dcs_write_seq'
      79 |                         ret = mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD3, 0x5a, 0x5a);
         |                               ^~~~~~~~~~~~~~~~~~~~~~
>> include/drm/drm_mipi_dsi.h:326:9: error: expected expression before 'do'
     326 |         do {                                                               \
         |         ^~
   drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c:84:23: note: in expansion of macro 'mipi_dsi_dcs_write_seq'
      84 |                 ret = mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD1, 0x5a, 0x5a);
         |                       ^~~~~~~~~~~~~~~~~~~~~~
>> include/drm/drm_mipi_dsi.h:326:9: error: expected expression before 'do'
     326 |         do {                                                               \
         |         ^~
   drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c:87:23: note: in expansion of macro 'mipi_dsi_dcs_write_seq'
      87 |                 ret = mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD2, 0x5a, 0x5a);
         |                       ^~~~~~~~~~~~~~~~~~~~~~
>> include/drm/drm_mipi_dsi.h:326:9: error: expected expression before 'do'
     326 |         do {                                                               \
         |         ^~
   drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c:91:31: note: in expansion of macro 'mipi_dsi_dcs_write_seq'
      91 |                         ret = mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD3, 0xa5, 0xa5);
         |                               ^~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c:68:33: warning: unused variable 'dsi' [-Wunused-variable]
      68 |         struct mipi_dsi_device *dsi = ctx->dsi;
         |                                 ^~~


vim +/do +326 include/drm/drm_mipi_dsi.h

3d9a8fcf1c6a90 Thierry Reding           2014-08-05  268  
960dd616f61c84 Thierry Reding           2014-07-21  269  ssize_t mipi_dsi_dcs_write_buffer(struct mipi_dsi_device *dsi,
960dd616f61c84 Thierry Reding           2014-07-21  270  				  const void *data, size_t len);
960dd616f61c84 Thierry Reding           2014-07-21  271  ssize_t mipi_dsi_dcs_write(struct mipi_dsi_device *dsi, u8 cmd,
960dd616f61c84 Thierry Reding           2014-07-21  272  			   const void *data, size_t len);
3c523d7d38a17b Thierry Reding           2014-07-21  273  ssize_t mipi_dsi_dcs_read(struct mipi_dsi_device *dsi, u8 cmd, void *data,
3c523d7d38a17b Thierry Reding           2014-07-21  274  			  size_t len);
083d573fd013c9 Thierry Reding           2014-08-05  275  int mipi_dsi_dcs_nop(struct mipi_dsi_device *dsi);
2f16b89737e24b Thierry Reding           2014-08-05  276  int mipi_dsi_dcs_soft_reset(struct mipi_dsi_device *dsi);
3d9a8fcf1c6a90 Thierry Reding           2014-08-05  277  int mipi_dsi_dcs_get_power_mode(struct mipi_dsi_device *dsi, u8 *mode);
5cc0af16fc08cf Thierry Reding           2014-08-05  278  int mipi_dsi_dcs_get_pixel_format(struct mipi_dsi_device *dsi, u8 *format);
42fe1e755d08b8 YoungJun Cho             2014-08-05  279  int mipi_dsi_dcs_enter_sleep_mode(struct mipi_dsi_device *dsi);
42fe1e755d08b8 YoungJun Cho             2014-08-05  280  int mipi_dsi_dcs_exit_sleep_mode(struct mipi_dsi_device *dsi);
42fe1e755d08b8 YoungJun Cho             2014-08-05  281  int mipi_dsi_dcs_set_display_off(struct mipi_dsi_device *dsi);
42fe1e755d08b8 YoungJun Cho             2014-08-05  282  int mipi_dsi_dcs_set_display_on(struct mipi_dsi_device *dsi);
3b46d4a0def157 Thierry Reding           2014-08-05  283  int mipi_dsi_dcs_set_column_address(struct mipi_dsi_device *dsi, u16 start,
3b46d4a0def157 Thierry Reding           2014-08-05  284  				    u16 end);
3b46d4a0def157 Thierry Reding           2014-08-05  285  int mipi_dsi_dcs_set_page_address(struct mipi_dsi_device *dsi, u16 start,
3b46d4a0def157 Thierry Reding           2014-08-05  286  				  u16 end);
42fe1e755d08b8 YoungJun Cho             2014-08-05  287  int mipi_dsi_dcs_set_tear_off(struct mipi_dsi_device *dsi);
42fe1e755d08b8 YoungJun Cho             2014-08-05  288  int mipi_dsi_dcs_set_tear_on(struct mipi_dsi_device *dsi,
42fe1e755d08b8 YoungJun Cho             2014-08-05  289  			     enum mipi_dsi_dcs_tear_mode mode);
5cc0af16fc08cf Thierry Reding           2014-08-05  290  int mipi_dsi_dcs_set_pixel_format(struct mipi_dsi_device *dsi, u8 format);
bbdcf516a6187d Thierry Reding           2016-08-24  291  int mipi_dsi_dcs_set_tear_scanline(struct mipi_dsi_device *dsi, u16 scanline);
1a9d759331b832 Vinay Simha BN           2016-07-31  292  int mipi_dsi_dcs_set_display_brightness(struct mipi_dsi_device *dsi,
1a9d759331b832 Vinay Simha BN           2016-07-31  293  					u16 brightness);
1a9d759331b832 Vinay Simha BN           2016-07-31  294  int mipi_dsi_dcs_get_display_brightness(struct mipi_dsi_device *dsi,
1a9d759331b832 Vinay Simha BN           2016-07-31  295  					u16 *brightness);
c9d27c6be518b4 Daniel Mentz             2023-01-16  296  int mipi_dsi_dcs_set_display_brightness_large(struct mipi_dsi_device *dsi,
c9d27c6be518b4 Daniel Mentz             2023-01-16  297  					     u16 brightness);
c9d27c6be518b4 Daniel Mentz             2023-01-16  298  int mipi_dsi_dcs_get_display_brightness_large(struct mipi_dsi_device *dsi,
c9d27c6be518b4 Daniel Mentz             2023-01-16  299  					     u16 *brightness);
068a0023396983 Andrzej Hajda            2013-12-04  300  
a9015ce593204f Javier Martinez Canillas 2023-01-02  301  /**
a9015ce593204f Javier Martinez Canillas 2023-01-02  302   * mipi_dsi_generic_write_seq - transmit data using a generic write packet
a9015ce593204f Javier Martinez Canillas 2023-01-02  303   * @dsi: DSI peripheral device
a9015ce593204f Javier Martinez Canillas 2023-01-02  304   * @seq: buffer containing the payload
a9015ce593204f Javier Martinez Canillas 2023-01-02  305   */
a9015ce593204f Javier Martinez Canillas 2023-01-02  306  #define mipi_dsi_generic_write_seq(dsi, seq...)                                \
a9015ce593204f Javier Martinez Canillas 2023-01-02  307  	do {                                                                   \
a9015ce593204f Javier Martinez Canillas 2023-01-02  308  		static const u8 d[] = { seq };                                 \
a9015ce593204f Javier Martinez Canillas 2023-01-02  309  		struct device *dev = &dsi->dev;                                \
a9015ce593204f Javier Martinez Canillas 2023-01-02  310  		int ret;                                                       \
a9015ce593204f Javier Martinez Canillas 2023-01-02  311  		ret = mipi_dsi_generic_write(dsi, d, ARRAY_SIZE(d));           \
a9015ce593204f Javier Martinez Canillas 2023-01-02  312  		if (ret < 0) {                                                 \
a9015ce593204f Javier Martinez Canillas 2023-01-02  313  			dev_err_ratelimited(dev, "transmit data failed: %d\n", \
a9015ce593204f Javier Martinez Canillas 2023-01-02  314  					    ret);                              \
a9015ce593204f Javier Martinez Canillas 2023-01-02  315  			return ret;                                            \
a9015ce593204f Javier Martinez Canillas 2023-01-02  316  		}                                                              \
a9015ce593204f Javier Martinez Canillas 2023-01-02  317  	} while (0)
a9015ce593204f Javier Martinez Canillas 2023-01-02  318  
2a9e9daf75231c Joel Selvaraj            2022-06-01  319  /**
2a9e9daf75231c Joel Selvaraj            2022-06-01  320   * mipi_dsi_dcs_write_seq - transmit a DCS command with payload
2a9e9daf75231c Joel Selvaraj            2022-06-01  321   * @dsi: DSI peripheral device
2a9e9daf75231c Joel Selvaraj            2022-06-01  322   * @cmd: Command
2a9e9daf75231c Joel Selvaraj            2022-06-01  323   * @seq: buffer containing data to be transmitted
2a9e9daf75231c Joel Selvaraj            2022-06-01  324   */
51d3c0e7dc3cf1 Javier Martinez Canillas 2023-01-02  325  #define mipi_dsi_dcs_write_seq(dsi, cmd, seq...)                           \
51d3c0e7dc3cf1 Javier Martinez Canillas 2023-01-02 @326  	do {                                                               \
2a9e9daf75231c Joel Selvaraj            2022-06-01  327  		static const u8 d[] = { cmd, seq };                        \
2a9e9daf75231c Joel Selvaraj            2022-06-01  328  		struct device *dev = &dsi->dev;                            \
2a9e9daf75231c Joel Selvaraj            2022-06-01  329  		int ret;                                                   \
2a9e9daf75231c Joel Selvaraj            2022-06-01  330  		ret = mipi_dsi_dcs_write_buffer(dsi, d, ARRAY_SIZE(d));    \
2a9e9daf75231c Joel Selvaraj            2022-06-01  331  		if (ret < 0) {                                             \
51d3c0e7dc3cf1 Javier Martinez Canillas 2023-01-02  332  			dev_err_ratelimited(                               \
51d3c0e7dc3cf1 Javier Martinez Canillas 2023-01-02  333  				dev, "sending command %#02x failed: %d\n", \
51d3c0e7dc3cf1 Javier Martinez Canillas 2023-01-02  334  				cmd, ret);                                 \
2a9e9daf75231c Joel Selvaraj            2022-06-01  335  			return ret;                                        \
2a9e9daf75231c Joel Selvaraj            2022-06-01  336  		}                                                          \
2a9e9daf75231c Joel Selvaraj            2022-06-01  337  	} while (0)
2a9e9daf75231c Joel Selvaraj            2022-06-01  338  

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https://github.com/intel/lkp-tests/wiki