linux-kernel - Re: [PATCH V2 5/9] platform/x86: intel_pmc_core: Get LPM requirements for Tiger Lake

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Date:   Sat, 17 Apr 2021 13:55:08 +0800
From:   kernel test robot <lkp@...el.com>
To:     "David E. Box" <david.e.box@...ux.intel.com>,
        irenic.rajneesh@...il.com, hdegoede@...hat.com,
        mgross@...ux.intel.com, gayatri.kammela@...el.com
Cc:     kbuild-all@...ts.01.org, platform-driver-x86@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2 5/9] platform/x86: intel_pmc_core: Get LPM
 requirements for Tiger Lake

Hi "David,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on 823b31517ad3196324322804ee365d5fcff704d6]

url:    https://github.com/0day-ci/linux/commits/David-E-Box/intel_pmc_core-Add-sub-state-requirements-and-mode/20210417-111530
base:   823b31517ad3196324322804ee365d5fcff704d6
config: i386-randconfig-a001-20210417 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/703038f16e99686bf2538222cee482f823bfa60f
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review David-E-Box/intel_pmc_core-Add-sub-state-requirements-and-mode/20210417-111530
        git checkout 703038f16e99686bf2538222cee482f823bfa60f
        # save the attached .config to linux build tree
        make W=1 W=1 ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

   In file included from drivers/platform/x86/intel_pmc_core.c:14:
   drivers/platform/x86/intel_pmc_core.c: In function 'pmc_core_get_tgl_lpm_reqs':
>> drivers/platform/x86/intel_pmc_core.c:621:5: warning: format '%ld' expects argument of type 'long int', but argument 5 has type 'size_t' {aka 'unsigned int'} [-Wformat=]
     621 |     "_DSM returned unexpected buffer size,"
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     622 |     " have %d, expect %ld\n", size, lpm_size);
         |                                     ~~~~~~~~
         |                                     |
         |                                     size_t {aka unsigned int}
   include/linux/acpi.h:1073:42: note: in definition of macro 'acpi_handle_debug'
    1073 |   acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__); \
         |                                          ^~~
   drivers/platform/x86/intel_pmc_core.c:622:25: note: format string is defined here
     622 |     " have %d, expect %ld\n", size, lpm_size);
         |                       ~~^
         |                         |
         |                         long int
         |                       %d


vim +621 drivers/platform/x86/intel_pmc_core.c

   597	
   598	static void pmc_core_get_tgl_lpm_reqs(struct platform_device *pdev)
   599	{
   600		struct pmc_dev *pmcdev = platform_get_drvdata(pdev);
   601		const int num_maps = pmcdev->map->lpm_num_maps;
   602		size_t lpm_size = LPM_MAX_NUM_MODES * num_maps * 4;
   603		union acpi_object *out_obj;
   604		struct acpi_device *adev;
   605		guid_t s0ix_dsm_guid;
   606		u32 *lpm_req_regs, *addr;
   607	
   608		adev = ACPI_COMPANION(&pdev->dev);
   609		if (!adev)
   610			return;
   611	
   612		guid_parse(ACPI_S0IX_DSM_UUID, &s0ix_dsm_guid);
   613	
   614		out_obj = acpi_evaluate_dsm(adev->handle, &s0ix_dsm_guid, 0,
   615					    ACPI_GET_LOW_MODE_REGISTERS, NULL);
   616		if (out_obj && out_obj->type == ACPI_TYPE_BUFFER) {
   617			int size = out_obj->buffer.length;
   618	
   619			if (size != lpm_size) {
   620				acpi_handle_debug(adev->handle,
 > 621					"_DSM returned unexpected buffer size,"
   622					" have %d, expect %ld\n", size, lpm_size);
   623				goto free_acpi_obj;
   624			}
   625		} else {
   626			acpi_handle_debug(adev->handle,
   627					  "_DSM function 0 evaluation failed\n");
   628			goto free_acpi_obj;
   629		}
   630	
   631		addr = (u32 *)out_obj->buffer.pointer;
   632	
   633		lpm_req_regs = devm_kzalloc(&pdev->dev, lpm_size * sizeof(u32),
   634					     GFP_KERNEL);
   635		if (!lpm_req_regs)
   636			goto free_acpi_obj;
   637	
   638		memcpy(lpm_req_regs, addr, lpm_size);
   639		pmcdev->lpm_req_regs = lpm_req_regs;
   640	
   641	free_acpi_obj:
   642		ACPI_FREE(out_obj);
   643	}
   644	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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