drivers/spi/spi-orion.c:413:17: sparse: sparse: incorrect type in assignment (different base types)

From: kernel test robot
Date: Mon Aug 24 2020 - 18:26:57 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 9907ab371426da8b3cffa6cc3e4ae54829559207
commit: 005b73d0dd83c9cb9420a196bea8070cde30ecac m68knommu: __force type casts for raw IO access
date: 4 weeks ago
config: m68k-randconfig-s031-20200824 (attached as .config)
compiler: m68k-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: v0.6.2-191-g10164920-dirty
git checkout 005b73d0dd83c9cb9420a196bea8070cde30ecac
# 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__' ARCH=m68k

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-orion.c:413:17: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int volatile [usertype] @@ got restricted __le16 [usertype] @@
>> drivers/spi/spi-orion.c:413:17: sparse: expected unsigned int volatile [usertype]
drivers/spi/spi-orion.c:413:17: sparse: got restricted __le16 [usertype]
drivers/spi/spi-orion.c:423:17: sparse: sparse: cast to restricted __le16
drivers/spi/spi-orion.c:423:17: sparse: sparse: cast to restricted __le16
drivers/spi/spi-orion.c:423:17: sparse: sparse: cast to restricted __le16
drivers/spi/spi-orion.c:423:17: sparse: sparse: cast to restricted __le16
drivers/spi/spi-orion.c:423:17: sparse: sparse: cast to restricted __le16
drivers/spi/spi-orion.c:423:17: sparse: sparse: cast to restricted __le16
drivers/spi/spi-orion.c:423:17: sparse: sparse: cast to restricted __le16
drivers/spi/spi-orion.c:423:17: sparse: sparse: cast to restricted __le16
drivers/spi/spi-orion.c:423:17: sparse: sparse: cast to restricted __le16
drivers/spi/spi-orion.c:423:17: sparse: sparse: cast to restricted __le16
drivers/spi/spi-orion.c:423:17: sparse: sparse: cast to restricted __le16
drivers/spi/spi-orion.c:423:17: sparse: sparse: cast to restricted __le16
drivers/spi/spi-orion.c:423:17: sparse: sparse: cast to restricted __le16
drivers/spi/spi-orion.c:423:17: sparse: sparse: cast to restricted __le16
drivers/spi/spi-orion.c:423:17: sparse: sparse: cast to restricted __le16
drivers/spi/spi-orion.c:423:17: sparse: sparse: cast to restricted __le16

# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=005b73d0dd83c9cb9420a196bea8070cde30ecac
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 005b73d0dd83c9cb9420a196bea8070cde30ecac
vim +413 drivers/spi/spi-orion.c

60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 396
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 397 static inline int
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 398 orion_spi_write_read_16bit(struct spi_device *spi,
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 399 const u16 **tx_buf, u16 **rx_buf)
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 400 {
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 401 void __iomem *tx_reg, *rx_reg, *int_reg;
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 402 struct orion_spi *orion_spi;
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 403
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 404 orion_spi = spi_master_get_devdata(spi->master);
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 405 tx_reg = spi_reg(orion_spi, ORION_SPI_DATA_OUT_REG);
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 406 rx_reg = spi_reg(orion_spi, ORION_SPI_DATA_IN_REG);
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 407 int_reg = spi_reg(orion_spi, ORION_SPI_INT_CAUSE_REG);
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 408
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 409 /* clear the interrupt cause register */
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 410 writel(0x0, int_reg);
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 411
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 412 if (tx_buf && *tx_buf)
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 @413 writel(__cpu_to_le16(get_unaligned((*tx_buf)++)), tx_reg);
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 414 else
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 415 writel(0, tx_reg);
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 416
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 417 if (orion_spi_wait_till_ready(orion_spi) < 0) {
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 418 dev_err(&spi->dev, "TXS timed out\n");
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 419 return -1;
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 420 }
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 421
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 422 if (rx_buf && *rx_buf)
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 423 put_unaligned(__le16_to_cpu(readl(rx_reg)), (*rx_buf)++);
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 424
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 425 return 1;
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 426 }
60cadec9da7b6c drivers/spi/orion_spi.c Shadi Ammouri 2008-08-05 427

:::::: The code at line 413 was first introduced by commit
:::::: 60cadec9da7b6c91aca51f408c828f7e74a68379 spi: new orion_spi driver

:::::: TO: Shadi Ammouri <shadi@xxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>

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

Attachment: .config.gz
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Next message: Rob Herring: "Re: [PATCH] iio/dac: convert ltc2632.txt to lltc,ltc2632.yaml"
Previous message: Rob Herring: "Re: [PATCH] dt-bindings: iommu: renesas,ipmmu-vmsa: Sort compatible string in increasing number of the SoC"
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