Re: [Intel-gfx] [PATCH v4 38/41] drm/i915: Implement the HDCP2.2 support for DP

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Hi Ramalingam,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on drm-intel/for-linux-next]
[also build test WARNING on next-20180517]
[cannot apply to v4.17-rc6]
[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/Ramalingam-C/drm-i915-Implement-HDCP2-2/20180523-031938
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-randconfig-x012-201820 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   In file included from include/drm/drm_mm.h:49:0,
                    from include/drm/drmP.h:73,
                    from drivers/gpu/drm/i915/intel_dp.c:36:
   drivers/gpu/drm/i915/intel_dp.c: In function 'intel_dp_hdcp2_read_rx_status':
>> drivers/gpu/drm/i915/intel_dp.c:5396:13: warning: format '%ld' expects argument of type 'long int', but argument 2 has type 'ssize_t {aka int}' [-Wformat=]
      DRM_ERROR("Read bstatus from DP/AUX failed (%ld)\n", ret);
                ^
   include/drm/drm_print.h:239:10: note: in definition of macro 'DRM_ERROR'
     drm_err(fmt, ##__VA_ARGS__)
             ^~~

vim +5396 drivers/gpu/drm/i915/intel_dp.c

  5385	
  5386	static inline
  5387	int intel_dp_hdcp2_read_rx_status(struct intel_digital_port *intel_dig_port,
  5388					  uint8_t *rx_status)
  5389	{
  5390		ssize_t ret;
  5391	
  5392		ret = drm_dp_dpcd_read(&intel_dig_port->dp.aux,
  5393				       DP_HDCP_2_2_REG_RXSTATUS_OFFSET, rx_status,
  5394				       HDCP_2_2_DP_RXSTATUS_LEN);
  5395		if (ret != HDCP_2_2_DP_RXSTATUS_LEN) {
> 5396			DRM_ERROR("Read bstatus from DP/AUX failed (%ld)\n", ret);
  5397			return ret >= 0 ? -EIO : ret;
  5398		}
  5399	
  5400		return 0;
  5401	}
  5402	

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

Attachment: .config.gz
Description: application/gzip

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