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Date:   Fri, 1 May 2020 11:57:46 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Bernard Zhao <bernard@...o.com>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Matthias Brugger <matthias.bgg@...il.com>,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        opensource.kernel@...o.com
Cc:     kbuild-all@...ts.01.org, opensource.kernel@...o.com
Subject: Re: [PATCH] drm/mediatek: cleanup coding style in mediatek a bit

Hi Bernard,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on pza/reset/next]
[also build test ERROR on drm-intel/for-linux-next drm-tip/drm-tip linus/master v5.7-rc3 next-20200430]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Bernard-Zhao/drm-mediatek-cleanup-coding-style-in-mediatek-a-bit/20200428-055750
base:   https://git.pengutronix.de/git/pza/linux reset/next
config: arm64-allyesconfig (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=arm64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   drivers/gpu/drm/mediatek/mtk_hdmi.c: In function 'mtk_hdmi_hw_send_info_frame':
>> drivers/gpu/drm/mediatek/mtk_hdmi.c:1807: error: unterminated argument list invoking macro "dev_err"
    1807 | MODULE_LICENSE("GPL v2");
         | 
>> drivers/gpu/drm/mediatek/mtk_hdmi.c:316:3: error: 'dev_err' undeclared (first use in this function); did you mean '_dev_err'?
     316 |   dev_err(hdmi->dev, "Wrong frame len: %d\n", frame_len;
         |   ^~~~~~~
         |   _dev_err
   drivers/gpu/drm/mediatek/mtk_hdmi.c:316:3: note: each undeclared identifier is reported only once for each function it appears in
>> drivers/gpu/drm/mediatek/mtk_hdmi.c:316:10: error: expected ';' at end of input
     316 |   dev_err(hdmi->dev, "Wrong frame len: %d\n", frame_len;
         |          ^
         |          ;
   ......
    1807 | MODULE_LICENSE("GPL v2");
         |           
>> drivers/gpu/drm/mediatek/mtk_hdmi.c:316:3: error: expected declaration or statement at end of input
     316 |   dev_err(hdmi->dev, "Wrong frame len: %d\n", frame_len;
         |   ^~~~~~~
>> drivers/gpu/drm/mediatek/mtk_hdmi.c:316:3: error: expected declaration or statement at end of input
   drivers/gpu/drm/mediatek/mtk_hdmi.c:308:6: warning: unused variable 'ctrl_frame_en' [-Wunused-variable]
     308 |  int ctrl_frame_en = 0;
         |      ^~~~~~~~~~~~~
   drivers/gpu/drm/mediatek/mtk_hdmi.c:302:6: warning: unused variable 'i' [-Wunused-variable]
     302 |  int i;
         |      ^
   drivers/gpu/drm/mediatek/mtk_hdmi.c:301:6: warning: unused variable 'ctrl_reg' [-Wunused-variable]
     301 |  u32 ctrl_reg = GRL_CTRL;
         |      ^~~~~~~~
   At top level:
   drivers/gpu/drm/mediatek/mtk_hdmi.c:298:13: warning: 'mtk_hdmi_hw_send_info_frame' defined but not used [-Wunused-function]
     298 | static void mtk_hdmi_hw_send_info_frame(struct mtk_hdmi *hdmi, u8 *buffer,
         |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/mediatek/mtk_hdmi.c:293:13: warning: 'mtk_hdmi_hw_enable_dvi_mode' defined but not used [-Wunused-function]
     293 | static void mtk_hdmi_hw_enable_dvi_mode(struct mtk_hdmi *hdmi, bool enable)
         |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/mediatek/mtk_hdmi.c:288:13: warning: 'mtk_hdmi_hw_write_int_mask' defined but not used [-Wunused-function]
     288 | static void mtk_hdmi_hw_write_int_mask(struct mtk_hdmi *hdmi, u32 int_mask)
         |             ^~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/mediatek/mtk_hdmi.c:282:13: warning: 'mtk_hdmi_hw_enable_notice' defined but not used [-Wunused-function]
     282 | static void mtk_hdmi_hw_enable_notice(struct mtk_hdmi *hdmi, bool enable_notice)
         |             ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/mediatek/mtk_hdmi.c:271:13: warning: 'mtk_hdmi_hw_reset' defined but not used [-Wunused-function]
     271 | static void mtk_hdmi_hw_reset(struct mtk_hdmi *hdmi)
         |             ^~~~~~~~~~~~~~~~~
   drivers/gpu/drm/mediatek/mtk_hdmi.c:266:13: warning: 'mtk_hdmi_hw_aud_unmute' defined but not used [-Wunused-function]
     266 | static void mtk_hdmi_hw_aud_unmute(struct mtk_hdmi *hdmi)
         |             ^~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/mediatek/mtk_hdmi.c:261:13: warning: 'mtk_hdmi_hw_aud_mute' defined but not used [-Wunused-function]
     261 | static void mtk_hdmi_hw_aud_mute(struct mtk_hdmi *hdmi)
         |             ^~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/mediatek/mtk_hdmi.c:255:13: warning: 'mtk_hdmi_hw_1p4_version_enable' defined but not used [-Wunused-function]
     255 | static void mtk_hdmi_hw_1p4_version_enable(struct mtk_hdmi *hdmi, bool enable)
         |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/mediatek/mtk_hdmi.c:230:13: warning: 'mtk_hdmi_hw_make_reg_writable' defined but not used [-Wunused-function]
     230 | static void mtk_hdmi_hw_make_reg_writable(struct mtk_hdmi *hdmi, bool enable)
         |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/mediatek/mtk_hdmi.c:224:13: warning: 'mtk_hdmi_hw_vid_black' defined but not used [-Wunused-function]
     224 | static void mtk_hdmi_hw_vid_black(struct mtk_hdmi *hdmi, bool black)
         |             ^~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/mediatek/mtk_hdmi.c:184:12: warning: 'mtk_hdmi_read' defined but not used [-Wunused-function]
     184 | static u32 mtk_hdmi_read(struct mtk_hdmi *hdmi, u32 offset)
         |            ^~~~~~~~~~~~~

vim +/dev_err +1807 drivers/gpu/drm/mediatek/mtk_hdmi.c

8f83f26891e1257 Jie Qiu 2016-01-04  1804  
8f83f26891e1257 Jie Qiu 2016-01-04  1805  MODULE_AUTHOR("Jie Qiu <jie.qiu@...iatek.com>");
8f83f26891e1257 Jie Qiu 2016-01-04  1806  MODULE_DESCRIPTION("MediaTek HDMI Driver");
8f83f26891e1257 Jie Qiu 2016-01-04 @1807  MODULE_LICENSE("GPL v2");

:::::: The code at line 1807 was first introduced by commit
:::::: 8f83f26891e12570780dcfc8ae376b655915ff6d drm/mediatek: Add HDMI support

:::::: TO: Jie Qiu <jie.qiu@...iatek.com>
:::::: CC: Philipp Zabel <p.zabel@...gutronix.de>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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