linux-kernel - Re: [PATCH] backlight: lm3630a: bump REG

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Date:   Thu, 22 Jun 2017 08:46:57 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Bhushan Shah <bshah@....org>
Cc:     kbuild-all@...org, Lee Jones <lee.jones@...aro.org>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Bhushan Shah <bshah@....org>
Subject: Re: [PATCH] backlight: lm3630a: bump REG_MAX value to 0x50 instead
 of 0x1F

Hi Bhushan,

[auto build test ERROR on v4.12-rc6]
[also build test ERROR on next-20170621]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Bhushan-Shah/backlight-lm3630a-bump-REG_MAX-value-to-0x50-instead-of-0x1F/20170622-074946
config: i386-randconfig-x011-06190614 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   drivers/video/backlight/lm3630a_bl.c: In function 'lm3630a_chip_init':
>> drivers/video/backlight/lm3630a_bl.c:84:30: error: 'FLTR_STR' undeclared (first use in this function)
     rval = lm3630a_write(pchip, FLTR_STR, 0x03);
                                 ^~~~~~~~
   drivers/video/backlight/lm3630a_bl.c:84:30: note: each undeclared identifier is reported only once for each function it appears in

vim +/FLTR_STR +84 drivers/video/backlight/lm3630a_bl.c

    78	{
    79		int rval;
    80		struct lm3630a_platform_data *pdata = pchip->pdata;
    81	
    82		usleep_range(1000, 2000);
    83		/* set Filter Strength Register */
  > 84		rval = lm3630a_write(pchip, FLTR_STR, 0x03);
    85		/* set Cofig. register */
    86		rval |= lm3630a_update(pchip, REG_CONFIG, 0x07, pdata->pwm_ctrl);
    87		/* set boost control */

---
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