tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 6efb943b8616ec53a5e444193dccf1af9ad627b5 commit: 8f28ca6bd8211214faf717677bbffe375c2a6072 iomap: constify ioreadX() iomem argument (as in generic implementation) date: 9 months ago config: alpha-randconfig-s032-20210510 (attached as .config) compiler: alpha-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8f28ca6bd8211214faf717677bbffe375c2a6072 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 8f28ca6bd8211214faf717677bbffe375c2a6072 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=alpha If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) drivers/spi/spi-lp8841-rtc.c:112:41: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void *iomem @@ drivers/spi/spi-lp8841-rtc.c:112:41: sparse: expected void volatile [noderef] __iomem *addr drivers/spi/spi-lp8841-rtc.c:112:41: sparse: got void *iomem drivers/spi/spi-lp8841-rtc.c:121:41: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void *iomem @@ drivers/spi/spi-lp8841-rtc.c:121:41: sparse: expected void volatile [noderef] __iomem *addr drivers/spi/spi-lp8841-rtc.c:121:41: sparse: got void *iomem drivers/spi/spi-lp8841-rtc.c:143:33: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void *iomem @@ drivers/spi/spi-lp8841-rtc.c:143:33: sparse: expected void volatile [noderef] __iomem *addr drivers/spi/spi-lp8841-rtc.c:143:33: sparse: got void *iomem drivers/spi/spi-lp8841-rtc.c:147:41: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void *iomem @@ drivers/spi/spi-lp8841-rtc.c:147:41: sparse: expected void volatile [noderef] __iomem *addr drivers/spi/spi-lp8841-rtc.c:147:41: sparse: got void *iomem drivers/spi/spi-lp8841-rtc.c:209:21: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void *iomem @@ got void [noderef] __iomem * @@ drivers/spi/spi-lp8841-rtc.c:209:21: sparse: expected void *iomem drivers/spi/spi-lp8841-rtc.c:209:21: sparse: got void [noderef] __iomem * drivers/spi/spi-lp8841-rtc.c:57:33: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void *iomem @@ drivers/spi/spi-lp8841-rtc.c:57:33: sparse: expected void volatile [noderef] __iomem *addr drivers/spi/spi-lp8841-rtc.c:57:33: sparse: got void *iomem >> drivers/spi/spi-lp8841-rtc.c:63:28: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem *addr @@ got void *iomem @@ drivers/spi/spi-lp8841-rtc.c:63:28: sparse: expected void const [noderef] __iomem *addr drivers/spi/spi-lp8841-rtc.c:63:28: sparse: got void *iomem drivers/spi/spi-lp8841-rtc.c:47:33: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void *iomem @@ drivers/spi/spi-lp8841-rtc.c:47:33: sparse: expected void volatile [noderef] __iomem *addr drivers/spi/spi-lp8841-rtc.c:47:33: sparse: got void *iomem drivers/spi/spi-lp8841-rtc.c:47:33: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void *iomem @@ drivers/spi/spi-lp8841-rtc.c:47:33: sparse: expected void volatile [noderef] __iomem *addr drivers/spi/spi-lp8841-rtc.c:47:33: sparse: got void *iomem drivers/spi/spi-lp8841-rtc.c:57:33: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void *iomem @@ drivers/spi/spi-lp8841-rtc.c:57:33: sparse: expected void volatile [noderef] __iomem *addr drivers/spi/spi-lp8841-rtc.c:57:33: sparse: got void *iomem >> drivers/spi/spi-lp8841-rtc.c:63:28: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem *addr @@ got void *iomem @@ drivers/spi/spi-lp8841-rtc.c:63:28: sparse: expected void const [noderef] __iomem *addr drivers/spi/spi-lp8841-rtc.c:63:28: sparse: got void *iomem drivers/spi/spi-lp8841-rtc.c:47:33: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void *iomem @@ drivers/spi/spi-lp8841-rtc.c:47:33: sparse: expected void volatile [noderef] __iomem *addr drivers/spi/spi-lp8841-rtc.c:47:33: sparse: got void *iomem drivers/spi/spi-lp8841-rtc.c:47:33: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void *iomem @@ drivers/spi/spi-lp8841-rtc.c:47:33: sparse: expected void volatile [noderef] __iomem *addr drivers/spi/spi-lp8841-rtc.c:47:33: sparse: got void *iomem vim +63 drivers/spi/spi-lp8841-rtc.c 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 59 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 60 static inline int 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 61 getmiso(struct spi_lp8841_rtc *data) 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 62 { 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 @63 return ioread8(data->iomem) & SPI_LP8841_RTC_MISO; 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 64 } 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 65 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 66 static inline u32 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 67 bitbang_txrx_be_cpha0_lsb(struct spi_lp8841_rtc *data, 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 68 unsigned usecs, unsigned cpol, unsigned flags, 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 69 u32 word, u8 bits) 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 70 { 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 71 /* if (cpol == 0) this is SPI_MODE_0; else this is SPI_MODE_2 */ 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 72 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 73 u32 shift = 32 - bits; 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 74 /* clock starts at inactive polarity */ 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 75 for (; likely(bits); bits--) { 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 76 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 77 /* setup LSB (to slave) on leading edge */ 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 78 if ((flags & SPI_MASTER_NO_TX) == 0) 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 79 setmosi(data, (word & 1)); 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 80 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 81 usleep_range(usecs, usecs + 1); /* T(setup) */ 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 82 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 83 /* sample LSB (from slave) on trailing edge */ 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 84 word >>= 1; 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 85 if ((flags & SPI_MASTER_NO_RX) == 0) 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 86 word |= (getmiso(data) << 31); 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 87 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 88 setsck(data, !cpol); 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 89 usleep_range(usecs, usecs + 1); 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 90 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 91 setsck(data, cpol); 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 92 } 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 93 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 94 word >>= shift; 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 95 return word; 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 96 } 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 97 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 98 static int 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 99 spi_lp8841_rtc_transfer_one(struct spi_master *master, 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 100 struct spi_device *spi, 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 101 struct spi_transfer *t) 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 102 { 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 103 struct spi_lp8841_rtc *data = spi_master_get_devdata(master); 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 104 unsigned count = t->len; 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 105 const u8 *tx = t->tx_buf; 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 106 u8 *rx = t->rx_buf; 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 107 u8 word = 0; 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 108 int ret = 0; 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 109 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 110 if (tx) { 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 111 data->state &= ~SPI_LP8841_RTC_nWE; 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 112 writeb(data->state, data->iomem); 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 113 while (likely(count > 0)) { 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 114 word = *tx++; 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 115 bitbang_txrx_be_cpha0_lsb(data, 1, 0, 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 116 SPI_MASTER_NO_RX, word, 8); 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 117 count--; 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 118 } 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 119 } else if (rx) { 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 120 data->state |= SPI_LP8841_RTC_nWE; 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 121 writeb(data->state, data->iomem); 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 122 while (likely(count > 0)) { 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 123 word = bitbang_txrx_be_cpha0_lsb(data, 1, 0, 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 124 SPI_MASTER_NO_TX, word, 8); 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 125 *rx++ = word; 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 126 count--; 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 127 } 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 128 } else { 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 129 ret = -EINVAL; 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 130 } 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 131 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 132 spi_finalize_current_transfer(master); 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 133 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 134 return ret; 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 135 } 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 136 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 137 static void 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 138 spi_lp8841_rtc_set_cs(struct spi_device *spi, bool enable) 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 139 { 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 140 struct spi_lp8841_rtc *data = spi_master_get_devdata(spi->master); 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 141 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 142 data->state = 0; 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 143 writeb(data->state, data->iomem); 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 144 if (enable) { 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 145 usleep_range(4, 5); 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 146 data->state |= SPI_LP8841_RTC_CE; 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 @147 writeb(data->state, data->iomem); 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 148 usleep_range(4, 5); 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 149 } 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 150 } 7ecbfff6711fb3 Sergei Ianovich 2016-02-23 151 :::::: The code at line 63 was first introduced by commit :::::: 7ecbfff6711fb331591003ac32c002ce55a0758f spi: master driver to enable RTC on ICPDAS LP-8841 :::::: TO: Sergei Ianovich <ynvich@xxxxxxxxx> :::::: CC: Mark Brown <broonie@xxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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