Re: [PATCH 2/2] drm/i915/BXT: Tolerance at BXT DSI pipe_config comparison

From: kbuild test robot <lkp@intel.com>
To: Ramalingam C <ramalingam.c@intel.com>
Cc: jani.nikula@intel.com, intel-gfx@lists.freedesktop.org,
	kbuild-all@01.org
Subject: Re: [PATCH 2/2] drm/i915/BXT: Tolerance at BXT DSI pipe_config comparison
Date: Wed, 30 Mar 2016 02:28:07 +0800	[thread overview]
Message-ID: <201603300213.z25fFBMN%fengguang.wu@intel.com> (raw)
In-Reply-To: <1459272891-6830-2-git-send-email-ramalingam.c@intel.com>

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Hi Ramalingam,

[auto build test ERROR on drm-intel/for-linux-next]
[cannot apply to v4.6-rc1 next-20160329]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Ramalingam-C/drm-i915-BXT-Get-pipe-conf-from-the-port-registers/20160330-014708
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-randconfig-s1-201613 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   In file included from include/linux/list.h:8:0,
                    from include/linux/dmi.h:4,
                    from drivers/gpu/drm/i915/intel_display.c:27:
   drivers/gpu/drm/i915/intel_display.c: In function 'intel_pipe_config_compare':
>> drivers/gpu/drm/i915/intel_display.c:12612:4: error: implicit declaration of function 'dsi_pixel_format_bpp' [-Werror=implicit-function-declaration]
      (dsi_pixel_format_bpp(intel_dsi->pixel_format) * \
       ^
   include/linux/kernel.h:67:36: note: in definition of macro 'DIV_ROUND_UP'
    #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
                                       ^
   drivers/gpu/drm/i915/intel_display.c:12624:4: note: in expansion of macro 'MAX_BXT_DSI_TIMING_RETRIVAL_ERR'
       MAX_BXT_DSI_TIMING_RETRIVAL_ERR))) { \
       ^
   drivers/gpu/drm/i915/intel_display.c:12636:4: note: in expansion of macro 'BXT_DSI_PIPE_CONF_CHECK_I_RANGE'
       BXT_DSI_PIPE_CONF_CHECK_I_RANGE(name) \
       ^
   drivers/gpu/drm/i915/intel_display.c:12751:2: note: in expansion of macro 'PIPE_CONF_CHECK_I_RANGE'
     PIPE_CONF_CHECK_I_RANGE(base.adjusted_mode.crtc_htotal);
     ^
   cc1: some warnings being treated as errors

vim +/dsi_pixel_format_bpp +12612 drivers/gpu/drm/i915/intel_display.c

 12606	 * the converson error, hence we consider the 3 times of error as tolerance.
 12607	 */
 12608	
 12609	#define MAX_BXT_DSI_TIMING_RETRIVAL_ERR \
 12610			(intel_dsi == NULL ? 0 : \
 12611			DIV_ROUND_UP((3 * 8 * intel_dsi->lane_count * 100), \
 12612			(dsi_pixel_format_bpp(intel_dsi->pixel_format) * \
 12613				intel_dsi->burst_mode_ratio)))
 12614	
 12615	#define BXT_DSI_PIPE_CONF_CHECK_I_RANGE(name) { \

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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