[Intel-gfx] [PATCH v3 37/40] drm/i915: Implement the HDCP2.2 support for DP

[kbuild test robot]

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-20180403]
[cannot apply to v4.16]
[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-HDCP2-2/20180404-031743
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-randconfig-x071-201813 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 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:5377:13: 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__)
             ^~~
   In file included from drivers/gpu/drm/i915/intel_dp.c:34:0:
   At top level:
   include/linux/mei_hdcp.h:148:12: warning: 'mei_cldev_unregister_notify' defined but not used [-Wunused-function]
    static int mei_cldev_unregister_notify(struct notifier_block *nb)
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/mei_hdcp.h:144:12: warning: 'mei_cldev_register_notify' defined but not used [-Wunused-function]
    static int mei_cldev_register_notify(struct notifier_block *nb)
               ^~~~~~~~~~~~~~~~~~~~~~~~~

vim +5377 drivers/gpu/drm/i915/intel_dp.c

  5366	
  5367	static inline
  5368	int intel_dp_hdcp2_read_rx_status(struct intel_digital_port *intel_dig_port,
  5369					  uint8_t *rx_status)
  5370	{
  5371		ssize_t ret;
  5372	
  5373		ret = drm_dp_dpcd_read(&intel_dig_port->dp.aux,
  5374				       DP_HDCP_2_2_REG_RXSTATUS_OFFSET, rx_status,
  5375				       HDCP_2_2_DP_RXSTATUS_LEN);
  5376		if (ret != HDCP_2_2_DP_RXSTATUS_LEN) {
> 5377			DRM_ERROR("Read bstatus from DP/AUX failed (%ld)\n", ret);
  5378			return ret >= 0 ? -EIO : ret;
  5379		}
  5380	
  5381		return 0;
  5382	}
  5383	

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