linux-kernel - Re: [PATCH v7 2/2] mtd: rawnand: Add NAND controller support on Intel LGM SoC

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Date:   Fri, 15 May 2020 21:43:26 +0800
From:   kbuild test robot <lkp@...el.com>
To:     "Ramuthevar,Vadivel MuruganX" 
        <vadivel.muruganx.ramuthevar@...ux.intel.com>,
        linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org,
        devicetree@...r.kernel.org
Cc:     kbuild-all@...ts.01.org, miquel.raynal@...tlin.com, richard@....at,
        vigneshr@...com, arnd@...db.de, brendanhiggins@...gle.com,
        tglx@...utronix.de, boris.brezillon@...labora.com,
        anders.roxell@...aro.org, masonccyang@...c.com.tw
Subject: Re: [PATCH v7 2/2] mtd: rawnand: Add NAND controller support on
 Intel LGM SoC

Hi "Ramuthevar,Vadivel,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on robh/for-next]
[also build test WARNING on arm-soc/for-next linus/master linux/master v5.7-rc5 next-20200514]
[cannot apply to mtd/master]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Ramuthevar-Vadivel-MuruganX/mtd-rawnand-Add-NAND-controller-support-on-Intel-LGM-SoC/20200515-185904
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-193-gb8fad4bc-dirty
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

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


sparse warnings: (new ones prefixed by >>)

>> drivers/mtd/nand/raw/intel-nand-controller.c:441:24: sparse: sparse: incorrect type in argument 1 (different base types) @@    expected unsigned int val @@    got restricted __be32 [assignedunsigned int val @@
>> drivers/mtd/nand/raw/intel-nand-controller.c:441:24: sparse:    expected unsigned int val
>> drivers/mtd/nand/raw/intel-nand-controller.c:441:24: sparse:    got restricted __be32 [assigned] [usertype] reg
   drivers/mtd/nand/raw/intel-nand-controller.c:444:24: sparse: sparse: incorrect type in argument 1 (different base types) @@    expected unsigned int val @@    got restricted __be32 [assignedunsigned int val @@
   drivers/mtd/nand/raw/intel-nand-controller.c:444:24: sparse:    expected unsigned int val
   drivers/mtd/nand/raw/intel-nand-controller.c:444:24: sparse:    got restricted __be32 [assigned] [usertype] reg

vim +441 drivers/mtd/nand/raw/intel-nand-controller.c

   420	
   421	static int ebu_nand_write_page_hwecc(struct nand_chip *chip, const u8 *buf,
   422					     int oob_required, int page)
   423	{
   424		struct mtd_info *mtd = nand_to_mtd(chip);
   425		struct ebu_nand_controller *ebu_host = nand_get_controller_data(chip);
   426		void __iomem *int_sta = ebu_host->hsnand + HSNAND_INT_STA;
   427		int ret, val, x;
   428		__be32 reg;
   429	
   430		ebu_nand_trigger(ebu_host, page, NAND_CMD_SEQIN);
   431	
   432		ret = ebu_dma_start(ebu_host, DMA_MEM_TO_DEV, buf, mtd->writesize);
   433		if (ret)
   434			return ret;
   435	
   436		if (oob_required) {
   437			const u8 *pdata;
   438	
   439			pdata = chip->oob_poi;
   440			reg = cpu_to_be32(*pdata++);
 > 441			writel(reg, ebu_host->hsnand + HSNAND_CMSG_0);
   442	
   443			reg = cpu_to_be32(*pdata);
   444			writel(reg, ebu_host->hsnand + HSNAND_CMSG_1);
   445		}
   446	
   447		ret = readl_poll_timeout_atomic(int_sta, val,
   448						!(val & HSNAND_INT_STA_WR_C), 10, 1000);
   449		if (ret)
   450			return -EIO;
   451	
   452		x = readl(ebu_host->hsnand + HSNAND_CTL);
   453		x &= ~HSNAND_CTL_GO;
   454		writel(x, ebu_host->hsnand + HSNAND_CTL);
   455	
   456		return 0;
   457	}
   458	

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