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Date:   Mon, 11 May 2020 10:34:40 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Gwendal Grignou <gwendal@...omium.org>,
        enric.balletbo@...labora.com, jic23@...nel.org
Cc:     kbuild-all@...ts.01.org, bleung@...omium.org, groeck@...omium.org,
        linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
        Gwendal Grignou <gwendal@...omium.org>
Subject: Re: [PATCH v2 3/3] iio: cros_ec_light: Add support for RGB sensor

Hi Gwendal,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on iio/togreg]
[also build test ERROR on chrome-platform-linux/for-next linus/master v5.7-rc5 next-20200508]
[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/Gwendal-Grignou/iio-cros_ec-Add-support-for-RGB-light-sensor/20200507-074251
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
config: i386-allyesconfig (attached as .config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

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/iio/light/cros_ec_light_prox.c:39:40: warning: left-hand operand of comma expression has no effect [-Wunused-value]
    #define CROS_EC_LIGHT_RGB_SPACE_MASK (6, 4)
                                           ^
   drivers/iio/light/cros_ec_light_prox.c:51:2: note: in expansion of macro 'CROS_EC_LIGHT_RGB_SPACE_MASK'
     CROS_EC_LIGHT_RGB_SPACE_MASK,
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/iio/light/cros_ec_light_prox.c:39:38: error: initializer element is not constant
    #define CROS_EC_LIGHT_RGB_SPACE_MASK (6, 4)
                                         ^
   drivers/iio/light/cros_ec_light_prox.c:51:2: note: in expansion of macro 'CROS_EC_LIGHT_RGB_SPACE_MASK'
     CROS_EC_LIGHT_RGB_SPACE_MASK,
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/iio/light/cros_ec_light_prox.c:39:38: note: (near initialization for 'cros_ec_light_prox_bitmasks[3]')
    #define CROS_EC_LIGHT_RGB_SPACE_MASK (6, 4)
                                         ^
   drivers/iio/light/cros_ec_light_prox.c:51:2: note: in expansion of macro 'CROS_EC_LIGHT_RGB_SPACE_MASK'
     CROS_EC_LIGHT_RGB_SPACE_MASK,
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/iio/light/cros_ec_light_prox.c:39:40: warning: left-hand operand of comma expression has no effect [-Wunused-value]
    #define CROS_EC_LIGHT_RGB_SPACE_MASK (6, 4)
                                           ^
   drivers/iio/light/cros_ec_light_prox.c:52:2: note: in expansion of macro 'CROS_EC_LIGHT_RGB_SPACE_MASK'
     CROS_EC_LIGHT_RGB_SPACE_MASK | CROS_EC_LIGHT_CLEAR_OR_PROXIMITY_MASK,
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/iio/light/cros_ec_light_prox.c:39:38: error: initializer element is not constant
    #define CROS_EC_LIGHT_RGB_SPACE_MASK (6, 4)
                                         ^
   drivers/iio/light/cros_ec_light_prox.c:52:2: note: in expansion of macro 'CROS_EC_LIGHT_RGB_SPACE_MASK'
     CROS_EC_LIGHT_RGB_SPACE_MASK | CROS_EC_LIGHT_CLEAR_OR_PROXIMITY_MASK,
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/iio/light/cros_ec_light_prox.c:39:38: note: (near initialization for 'cros_ec_light_prox_bitmasks[4]')
    #define CROS_EC_LIGHT_RGB_SPACE_MASK (6, 4)
                                         ^
   drivers/iio/light/cros_ec_light_prox.c:52:2: note: in expansion of macro 'CROS_EC_LIGHT_RGB_SPACE_MASK'
     CROS_EC_LIGHT_RGB_SPACE_MASK | CROS_EC_LIGHT_CLEAR_OR_PROXIMITY_MASK,
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/iio/light/cros_ec_light_prox.c: In function 'cros_ec_light_capture':
   drivers/iio/light/cros_ec_light_prox.c:39:40: warning: left-hand operand of comma expression has no effect [-Wunused-value]
    #define CROS_EC_LIGHT_RGB_SPACE_MASK (6, 4)
                                           ^
   drivers/iio/light/cros_ec_light_prox.c:404:19: note: in expansion of macro 'CROS_EC_LIGHT_RGB_SPACE_MASK'
         (scan_mask & CROS_EC_LIGHT_RGB_SPACE_MASK)) {
                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/iio/light/cros_ec_light_prox.c: In function 'cros_ec_light_prox_update_scan_mode':
   drivers/iio/light/cros_ec_light_prox.c:39:40: warning: left-hand operand of comma expression has no effect [-Wunused-value]
    #define CROS_EC_LIGHT_RGB_SPACE_MASK (6, 4)
                                           ^
   drivers/iio/light/cros_ec_light_prox.c:434:24: note: in expansion of macro 'CROS_EC_LIGHT_RGB_SPACE_MASK'
     else if (*scan_mask & CROS_EC_LIGHT_RGB_SPACE_MASK)
                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~

vim +39 drivers/iio/light/cros_ec_light_prox.c

    23	
    24	/*
    25	 * We may present up to 7 channels:
    26	 *
    27	 * +-----+-----+-----+-----+-----+-----+-----+
    28	 * |Clear|  X  |  Y  |  Z  | RED |BLUE |GREEN|
    29	 * |Prox |     |     |     |     |     |     |
    30	 * +-----+-----+-----+-----+-----+-----+-----+
    31	 *
    32	 * Prox[imity] is presented by proximity sensors.
    33	 * The clear channel is supported by single and color light sensors.
    34	 * Color light sensor either reports color information in the RGB space or
    35	 * the CIE 1931 XYZ (XYZ) color space.
    36	 */
    37	#define CROS_EC_LIGHT_CLEAR_OR_PROXIMITY_MASK GENMASK(0, 0)
    38	#define CROS_EC_LIGHT_XYZ_SPACE_MASK GENMASK(3, 1)
  > 39	#define CROS_EC_LIGHT_RGB_SPACE_MASK (6, 4)
    40	

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

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