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SubjectRe: [PATCH] pinctrl: add one more "const" for generic function groups
Hi "Rafał,

I love your patch! Perhaps something to improve:

[auto build test WARNING on linusw-pinctrl/devel]
[also build test WARNING on v5.16-rc5 next-20211215]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url: https://github.com/0day-ci/linux/commits/Rafa-Mi-ecki/pinctrl-add-one-more-const-for-generic-function-groups/20211216-014859
base: https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl.git devel
config: arm64-randconfig-s031-20211216 (https://download.01.org/0day-ci/archive/20211217/202112171229.i6D3onAx-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 11.2.0
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: v0.6.4-dirty
# https://github.com/0day-ci/linux/commit/e4338a6ad34998afb60c5ad294aafa06cd7110a7
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Rafa-Mi-ecki/pinctrl-add-one-more-const-for-generic-function-groups/20211216-014859
git checkout e4338a6ad34998afb60c5ad294aafa06cd7110a7
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/pinctrl/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)
>> drivers/pinctrl/pinctrl-keembay.c:1594:29: sparse: sparse: incorrect type in assignment (different modifiers) @@ expected char const **grp @@ got char const *const *group_names @@
drivers/pinctrl/pinctrl-keembay.c:1594:29: sparse: expected char const **grp
drivers/pinctrl/pinctrl-keembay.c:1594:29: sparse: got char const *const *group_names

vim +1594 drivers/pinctrl/pinctrl-keembay.c

ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1556
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1557 static int keembay_add_functions(struct keembay_pinctrl *kpc,
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1558 struct function_desc *function)
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1559 {
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1560 unsigned int i;
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1561
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1562 /* Assign the groups for each function */
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1563 for (i = 0; i < kpc->npins; i++) {
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1564 const struct pinctrl_pin_desc *pdesc = keembay_pins + i;
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1565 struct keembay_mux_desc *mux = pdesc->drv_data;
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1566
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1567 while (mux->name) {
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1568 struct function_desc *func;
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1569 const char **grp;
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1570 size_t grp_size;
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1571 u32 j, grp_num;
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1572
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1573 for (j = 0; j < kpc->nfuncs; j++) {
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1574 if (!strcmp(mux->name, function[j].name))
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1575 break;
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1576 }
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1577
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1578 if (j == kpc->nfuncs)
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1579 return -EINVAL;
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1580
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1581 func = function + j;
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1582 grp_num = func->num_group_names;
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1583 grp_size = sizeof(*func->group_names);
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1584
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1585 if (!func->group_names) {
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1586 func->group_names = devm_kcalloc(kpc->dev,
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1587 grp_num,
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1588 grp_size,
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1589 GFP_KERNEL);
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1590 if (!func->group_names)
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1591 return -ENOMEM;
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1592 }
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1593
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 @1594 grp = func->group_names;
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1595 while (*grp)
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1596 grp++;
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1597
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1598 *grp = pdesc->name;
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1599 mux++;
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1600 }
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1601 }
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1602
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1603 /* Add all functions */
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1604 for (i = 0; i < kpc->nfuncs; i++) {
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1605 pinmux_generic_add_function(kpc->pctrl,
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1606 function[i].name,
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1607 function[i].group_names,
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1608 function[i].num_group_names,
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1609 function[i].data);
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1610 }
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1611
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1612 return 0;
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1613 }
ffd4e739358be03 Lakshmi Sowjanya D 2021-08-06 1614

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

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