linux-kernel - Re: [PATCH v5 1/3] mfd: ls2kbmc: Introduce Loongson-2K BMC core driver

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Message-ID: <202506210652.ipUFDU5B-lkp@intel.com>
Date: Sat, 21 Jun 2025 06:15:43 +0800
From: kernel test robot <lkp@...el.com>
To: Binbin Zhou <zhoubinbin@...ngson.cn>,
	Binbin Zhou <zhoubb.aaron@...il.com>,
	Huacai Chen <chenhuacai@...ngson.cn>, Lee Jones <lee@...nel.org>,
	Corey Minyard <minyard@....org>
Cc: oe-kbuild-all@...ts.linux.dev, Xuerui Wang <kernel@...0n.name>,
	loongarch@...ts.linux.dev, linux-kernel@...r.kernel.org,
	openipmi-developer@...ts.sourceforge.net, jeffbai@...c.io,
	kexybiscuit@...c.io, wangyao@...ote.com,
	Chong Qiao <qiaochong@...ngson.cn>
Subject: Re: [PATCH v5 1/3] mfd: ls2kbmc: Introduce Loongson-2K BMC core
 driver

Hi Binbin,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 8ffcb7560b4a15faf821df95e3ab532b2b020f8c]

url:    https://github.com/intel-lab-lkp/linux/commits/Binbin-Zhou/mfd-ls2kbmc-Introduce-Loongson-2K-BMC-core-driver/20250620-100856
base:   8ffcb7560b4a15faf821df95e3ab532b2b020f8c
patch link:    https://lore.kernel.org/r/82cbc8558f15981e0953ab229d2afcc5501f982c.1750301674.git.zhoubinbin%40loongson.cn
patch subject: [PATCH v5 1/3] mfd: ls2kbmc: Introduce Loongson-2K BMC core driver
config: x86_64-randconfig-123-20250621 (https://download.01.org/0day-ci/archive/20250621/202506210652.ipUFDU5B-lkp@intel.com/config)
compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250621/202506210652.ipUFDU5B-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202506210652.ipUFDU5B-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/mfd/ls2k-bmc-core.c:75:14: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected char *mode @@     got void [noderef] __iomem * @@
   drivers/mfd/ls2k-bmc-core.c:75:14: sparse:     expected char *mode
   drivers/mfd/ls2k-bmc-core.c:75:14: sparse:     got void [noderef] __iomem *

vim +75 drivers/mfd/ls2k-bmc-core.c

    64	
    65	/*
    66	 * Currently the Loongson-2K BMC hardware does not have an I2C interface to adapt to the
    67	 * resolution. We set the resolution by presetting "video=1280x1024-16@2M" to the BMC memory.
    68	 */
    69	static int ls2k_bmc_parse_mode(struct pci_dev *pdev, struct simplefb_platform_data *pd)
    70	{
    71		char *mode;
    72		int depth, ret;
    73	
    74		/* The last 16M of PCI BAR0 is used to store the resolution string. */
  > 75		mode = devm_ioremap(&pdev->dev, pci_resource_start(pdev, 0) + SZ_16M, SZ_16M);
    76		if (!mode)
    77			return -ENOMEM;
    78	
    79		/* The resolution field starts with the flag "video=". */
    80		if (!strncmp(mode, "video=", 6))
    81			mode = mode + 6;
    82	
    83		ret = kstrtoint(strsep(&mode, "x"), 10, &pd->width);
    84		if (ret)
    85			return ret;
    86	
    87		ret = kstrtoint(strsep(&mode, "-"), 10, &pd->height);
    88		if (ret)
    89			return ret;
    90	
    91		ret = kstrtoint(strsep(&mode, "@"), 10, &depth);
    92		if (ret)
    93			return ret;
    94	
    95		pd->stride = pd->width * depth / 8;
    96		pd->format = depth == 32 ? "a8r8g8b8" : "r5g6b5";
    97	
    98		return 0;
    99	}
   100	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki