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Date:   Tue, 12 Jun 2018 07:08:32 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Stefan Agner <stefan@...er.ch>
Cc:     kbuild-all@...org, boris.brezillon@...tlin.com,
        dwmw2@...radead.org, computersforpeace@...il.com,
        marek.vasut@...il.com, robh+dt@...nel.org, mark.rutland@....com,
        thierry.reding@...il.com, dev@...xeye.de,
        miquel.raynal@...tlin.com, richard@....at, marcel@...wiler.com,
        krzk@...nel.org, digetx@...il.com, benjamin.lindqvist@...ian.se,
        jonathanh@...dia.com, pdeschrijver@...dia.com, pgaikwad@...dia.com,
        mirza.krak@...il.com, gaireg@...reg.de,
        linux-mtd@...ts.infradead.org, linux-tegra@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Stefan Agner <stefan@...er.ch>
Subject: Re: [PATCH v4 4/6] mtd: rawnand: add NVIDIA Tegra NAND Flash
 controller driver

Hi Stefan,

I love your patch! Perhaps something to improve:

[auto build test WARNING on mtd/nand/next]
[also build test WARNING on v4.17 next-20180608]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Stefan-Agner/mtd-rawnand-add-NVIDIA-Tegra-NAND-flash-support/20180612-045611
base:   git://git.infradead.org/linux-mtd.git nand/next
reproduce:
        # apt-get install sparse
        make ARCH=x86_64 allmodconfig
        make C=1 CF=-D__CHECK_ENDIAN__


sparse warnings: (new ones prefixed by >>)

   drivers/mtd/nand/raw/tegra_nand.c:422:41: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:425:41: sparse: expression using sizeof(void)
>> drivers/mtd/nand/raw/tegra_nand.c:656:56: sparse: Using plain integer as NULL pointer
   drivers/mtd/nand/raw/tegra_nand.c:667:56: sparse: Using plain integer as NULL pointer
   drivers/mtd/nand/raw/tegra_nand.c:693:56: sparse: Using plain integer as NULL pointer
   drivers/mtd/nand/raw/tegra_nand.c:759:48: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:759:48: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:762:24: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:762:24: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:792:56: sparse: Using plain integer as NULL pointer
   drivers/mtd/nand/raw/tegra_nand.c:814:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:814:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:814:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:814:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:814:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:814:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:814:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:814:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:814:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:814:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:814:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:814:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:814:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:814:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:818:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:823:15: sparse: expression using sizeof(void)
   drivers/mtd/nand/raw/tegra_nand.c:823:15: sparse: expression using sizeof(void)

vim +656 drivers/mtd/nand/raw/tegra_nand.c

   651	
   652	static int tegra_nand_read_page_raw(struct mtd_info *mtd,
   653					    struct nand_chip *chip,
   654					    uint8_t *buf, int oob_required, int page)
   655	{
 > 656		void *oob_buf = oob_required ? chip->oob_poi : 0;
   657	
   658		return tegra_nand_page_xfer(mtd, chip, buf, oob_buf,
   659					    mtd->oobsize, page, true);
   660	}
   661	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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