drivers/comedi/drivers/comedi_8254.c:139:31: sparse: sparse: cast to restricted __le16

From: kernel test robot
Date: Wed Sep 11 2024 - 14:09:43 EST

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 8d8d276ba2fb5f9ac4984f5c10ae60858090babc
commit: 98a15816636044f25be4644db2a3e09fad68aaf7 Revert "comedi: add HAS_IOPORT dependencies"
date: 1 year ago
config: m68k-randconfig-r113-20240911 (https://download.01.org/0day-ci/archive/20240912/202409120105.yV1KBe45-lkp@xxxxxxxxx/config)
compiler: m68k-linux-gcc (GCC) 14.1.0
reproduce: (https://download.01.org/0day-ci/archive/20240912/202409120105.yV1KBe45-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409120105.yV1KBe45-lkp@xxxxxxxxx/

sparse warnings: (new ones prefixed by >>)
>> drivers/comedi/drivers/comedi_8254.c:139:31: sparse: sparse: cast to restricted __le16
>> drivers/comedi/drivers/comedi_8254.c:139:31: sparse: sparse: cast to restricted __le16
>> drivers/comedi/drivers/comedi_8254.c:139:31: sparse: sparse: cast to restricted __le16
>> drivers/comedi/drivers/comedi_8254.c:139:31: sparse: sparse: cast to restricted __le16
drivers/comedi/drivers/comedi_8254.c: note: in included file (through arch/m68k/include/asm/io.h, include/linux/io.h):
arch/m68k/include/asm/io_mm.h:164:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:164:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:164:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:164:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:164:21: sparse: sparse: Using plain integer as NULL pointer

vim +139 drivers/comedi/drivers/comedi_8254.c

d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 121
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 122 static unsigned int __i8254_read(struct comedi_8254 *i8254, unsigned int reg)
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 123 {
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 124 unsigned int reg_offset = (reg * i8254->iosize) << i8254->regshift;
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 125 unsigned int val;
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 126
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 127 switch (i8254->iosize) {
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 128 default:
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 129 case I8254_IO8:
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 130 if (i8254->mmio)
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 131 val = readb(i8254->mmio + reg_offset);
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 132 else
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 133 val = inb(i8254->iobase + reg_offset);
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 134 break;
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 135 case I8254_IO16:
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 136 if (i8254->mmio)
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 137 val = readw(i8254->mmio + reg_offset);
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 138 else
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 @139 val = inw(i8254->iobase + reg_offset);
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 140 break;
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 141 case I8254_IO32:
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 142 if (i8254->mmio)
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 143 val = readl(i8254->mmio + reg_offset);
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 144 else
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 145 val = inl(i8254->iobase + reg_offset);
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 146 break;
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 147 }
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 148 return val & 0xff;
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 149 }
d42b5211d861f1 drivers/staging/comedi/drivers/comedi_8254.c H Hartley Sweeten 2015-02-23 150

:::::: The code at line 139 was first introduced by commit
:::::: d42b5211d861f1077869e9133efa19297a6f152b staging: comedi: comedi_8254: introduce module for 8254 timer support

:::::: TO: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
:::::: CC: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

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