[plbossart-sound:integration/soundwire-sof-20200109 14/14] sound/soc//sof/intel/hda.c:1126:9: warning: assignment discards 'const' qualifier from pointer target type

[plbossart-sound:integration/soundwire-sof-20200109 14/14] sound/soc//sof/intel/hda.c:1126:9: warning: assignment discards 'const' qualifier from pointer target type

[kbuild test robot]

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tree:   https://github.com/plbossart/sound integration/soundwire-sof-20200109
head:   aa85a698ad25db1ca48acb16c0661c4b998bd7ee
commit: aa85a698ad25db1ca48acb16c0661c4b998bd7ee [14/14] ASoC: SOF: select machine driver with sdw adr.
config: arm64-allyesconfig (attached as .config)
compiler: aarch64-linux-gcc (GCC) 7.5.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout aa85a698ad25db1ca48acb16c0661c4b998bd7ee
        # save the attached .config to linux build tree
        GCC_VERSION=7.5.0 make.cross ARCH=arm64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   sound/soc//sof/intel/hda.c: In function 'hda_sdw_machine_select':
>> sound/soc//sof/intel/hda.c:1126:9: warning: assignment discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
       link = mach->links;
            ^

vim +/const +1126 sound/soc//sof/intel/hda.c

  1097	
  1098	static int hda_sdw_machine_select(struct snd_sof_dev *sdev)
  1099	{
  1100		struct hdac_bus *bus = sof_to_bus(sdev);
  1101		struct snd_soc_acpi_mach *mach;
  1102		struct snd_sof_pdata *pdata = sdev->pdata;
  1103		struct sof_intel_hda_dev *hdev = pdata->hw_pdata;
  1104		u32 link_mask;
  1105		struct snd_soc_acpi_link_adr *link;
  1106		int i;
  1107	
  1108		link_mask = hdev->info.link_mask;
  1109	
  1110		/*
  1111		 * Select SoundWire machine driver if needed using the
  1112		 * alternate tables. This case deals with SoundWire-only
  1113		 * machines, for mixed cases with I2C/I2S the detection relies
  1114		 * on the HID list.
  1115		 */
  1116		if (link_mask && !pdata->machine) {
  1117			for (mach = pdata->desc->alt_machines;
  1118			     mach && mach->link_mask; mach++) {
  1119				if (mach->link_mask != link_mask)
  1120					continue;
  1121	
  1122				/* No need to match adr if there is no links defined */
  1123				if (!mach->links)
  1124					break;
  1125	
> 1126				link = mach->links;
  1127				for (i = 0; i < hdev->info.count; i++, link++) {
  1128					/*
  1129					 * Try next machine if any expected Slaves
  1130					 * are not found on this link.
  1131					 */
  1132					if (!link_slaves_found(sdev, link, hdev->sdw))
  1133						break;
  1134				}
  1135				/* Found if all Slaves are checked */
  1136				if (i == hdev->info.count)
  1137					break;
  1138			}
  1139			if (mach && mach->link_mask) {
  1140				dev_dbg(bus->dev,
  1141					"SoundWire machine driver %s topology %s\n",
  1142					mach->drv_name,
  1143					mach->sof_tplg_filename);
  1144				pdata->machine = mach;
  1145				mach->mach_params.platform = dev_name(sdev->dev);
  1146				pdata->fw_filename = mach->sof_fw_filename;
  1147				pdata->tplg_filename = mach->sof_tplg_filename;
  1148			} else {
  1149				dev_info(sdev->dev,
  1150					 "No SoundWire machine driver found\n");
  1151			}
  1152		}
  1153	
  1154		return 0;
  1155	}
  1156	#else
  1157	static int hda_sdw_machine_select(struct snd_sof_dev *sdev)
  1158	{
  1159		return 0;
  1160	}
  1161	#endif
  1162	

---
0-DAY kernel test infrastructure                 Open Source Technology Center
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org Intel Corporation

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