Re: [PATCH 04/12] ASoC: amd: acp: add acp i2s master clock generation for rembrandt platform

[kernel test robot <lkp@intel.com>]

Hi Syed,

kernel test robot noticed the following build warnings:

[auto build test WARNING on broonie-sound/for-next]
[also build test WARNING on linus/master v6.4-rc7 next-20230622]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Syed-Saba-Kareem/ASoC-amd-acp-remove-acp-poweroff-function/20230622-233145
base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
patch link:    https://lore.kernel.org/r/20230622152406.3709231-7-Syed.SabaKareem%40amd.com
patch subject: [PATCH 04/12] ASoC: amd: acp: add acp i2s master clock generation for rembrandt platform
config: i386-allyesconfig (https://download.01.org/0day-ci/archive/20230623/202306230648.6X3y3ujR-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce: (https://download.01.org/0day-ci/archive/20230623/202306230648.6X3y3ujR-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202306230648.6X3y3ujR-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> sound/soc/amd/acp/acp-rembrandt.c:169:5: warning: no previous prototype for 'acp6x_master_clock_generate' [-Wmissing-prototypes]
     169 | int acp6x_master_clock_generate(struct device *dev)
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/acp6x_master_clock_generate +169 sound/soc/amd/acp/acp-rembrandt.c

   168	
 > 169	int acp6x_master_clock_generate(struct device *dev)
   170	{
   171		int data = 0;
   172		struct pci_dev *smn_dev;
   173	
   174		smn_dev = pci_get_device(PCI_VENDOR_ID_AMD, HOST_BRIDGE_ID, NULL);
   175		if (!smn_dev) {
   176			dev_err(dev, "Failed to get host bridge device\n");
   177			return -ENODEV;
   178		}
   179	
   180		smn_write(smn_dev, MP1_C2PMSG_93, 0);
   181		smn_write(smn_dev, MP1_C2PMSG_85, 0xC4);
   182		smn_write(smn_dev, MP1_C2PMSG_69, 0x4);
   183		read_poll_timeout(smn_read, data, data, DELAY_US,
   184				  ACP_TIMEOUT, false, smn_dev, MP1_C2PMSG_93);
   185		return 0;
   186	}
   187	

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