tree: https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git queue-4.9 head: c69d59f2561388cc090fd06ef01ab4bb8d014bd6 commit: 8fb2dccd2de9eadc5c3d6bb74815022facd7655d [91/99] mtd: rawnand: Pass a nand_chip object to nand_release() config: arm-allyesconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 7.5.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 8fb2dccd2de9eadc5c3d6bb74815022facd7655d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-7.5.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/mtd/nand/pxa3xx_nand.c: In function 'pxa3xx_nand_remove': nand_release(nand_to_mtd(&info->host[cs]->chip)); ^~~~~~~~~~~ In file included from drivers/mtd/nand/pxa3xx_nand.c:24:0: include/linux/mtd/nand.h:43:6: note: expected 'struct nand_chip *' but argument is of type 'struct mtd_info *' void nand_release(struct nand_chip *chip); ^~~~~~~~~~~~ cc1: some warnings being treated as errors -- drivers/mtd/nand/qcom_nandc.c: In function 'qcom_nandc_probe': nand_release(nand_to_mtd(&host->chip)); ^~~~~~~~~~~ In file included from drivers/mtd/nand/qcom_nandc.c:20:0: include/linux/mtd/nand.h:43:6: note: expected 'struct nand_chip *' but argument is of type 'struct mtd_info *' void nand_release(struct nand_chip *chip); ^~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/nand_release +1910 drivers/mtd/nand/pxa3xx_nand.c fe69af002e26ca eric miao 2008-02-14 1880 fe69af002e26ca eric miao 2008-02-14 1881 static int pxa3xx_nand_remove(struct platform_device *pdev) fe69af002e26ca eric miao 2008-02-14 1882 { e353a20afaee1e Lei Wen 2011-03-03 1883 struct pxa3xx_nand_info *info = platform_get_drvdata(pdev); f3c8cfc237927c Lei Wen 2011-07-14 1884 struct pxa3xx_nand_platform_data *pdata; f3c8cfc237927c Lei Wen 2011-07-14 1885 int irq, cs; fe69af002e26ca eric miao 2008-02-14 1886 d456882b41b84e Lei Wen 2011-07-14 1887 if (!info) d456882b41b84e Lei Wen 2011-07-14 1888 return 0; d456882b41b84e Lei Wen 2011-07-14 1889 453810b79571ff Jingoo Han 2013-07-30 1890 pdata = dev_get_platdata(&pdev->dev); fe69af002e26ca eric miao 2008-02-14 1891 dbf5986aed6262 Haojian Zhuang 2009-09-10 1892 irq = platform_get_irq(pdev, 0); dbf5986aed6262 Haojian Zhuang 2009-09-10 1893 if (irq >= 0) dbf5986aed6262 Haojian Zhuang 2009-09-10 1894 free_irq(irq, info); 498b6145b8878c Ezequiel Garcia 2013-04-17 1895 pxa3xx_nand_free_buff(info); 82a72d108b4fbc Mike Rapoport 2009-02-17 1896 e971affaf92d53 Robert Jarzmik 2015-09-28 1897 /* e971affaf92d53 Robert Jarzmik 2015-09-28 1898 * In the pxa3xx case, the DFI bus is shared between the SMC and NFC. e971affaf92d53 Robert Jarzmik 2015-09-28 1899 * In order to prevent a lockup of the system bus, the DFI bus e971affaf92d53 Robert Jarzmik 2015-09-28 1900 * arbitration is granted to SMC upon driver removal. This is done by e971affaf92d53 Robert Jarzmik 2015-09-28 1901 * setting the x_ARB_CNTL bit, which also prevents the NAND to have e971affaf92d53 Robert Jarzmik 2015-09-28 1902 * access to the bus anymore. e971affaf92d53 Robert Jarzmik 2015-09-28 1903 */ e971affaf92d53 Robert Jarzmik 2015-09-28 1904 nand_writel(info, NDCR, e971affaf92d53 Robert Jarzmik 2015-09-28 1905 (nand_readl(info, NDCR) & ~NDCR_ND_ARB_EN) | e971affaf92d53 Robert Jarzmik 2015-09-28 1906 NFCV1_NDCR_ARB_CNTL); fb32061ffaa9da Ezequiel Garcia 2013-04-17 1907 clk_disable_unprepare(info->clk); 82a72d108b4fbc Mike Rapoport 2009-02-17 1908 f3c8cfc237927c Lei Wen 2011-07-14 1909 for (cs = 0; cs < pdata->num_cs; cs++) 063294a36e8e8c Boris Brezillon 2015-12-10 @1910 nand_release(nand_to_mtd(&info->host[cs]->chip)); fe69af002e26ca eric miao 2008-02-14 1911 return 0; fe69af002e26ca eric miao 2008-02-14 1912 } fe69af002e26ca eric miao 2008-02-14 1913 :::::: The code at line 1910 was first introduced by commit :::::: 063294a36e8e8c2642b6c63a709d6792a609ec33 mtd: nand: pxa3xx: use the mtd instance embedded in struct nand_chip :::::: TO: Boris BREZILLON <boris.brezillon(a)free-electrons.com&gt; :::::: CC: Brian Norris <computersforpeace(a)gmail.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org