[lee-mfd:for-mfd-next 41/41] drivers/mfd/intel_quark_i2c_gpio.c:161:25: warning: initialization discards 'const' qualifier from pointer target type

[lee-mfd:for-mfd-next 41/41] drivers/mfd/intel_quark_i2c_gpio.c:161:25: warning: initialization discards 'const' qualifier from pointer target type

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next
head:   43e72121b5f667b10ba5adae96880e388dda55d1
commit: 43e72121b5f667b10ba5adae96880e388dda55d1 [41/41] mfd: intel_quark_i2c_gpio: Don't play dirty trick with const
config: x86_64-randconfig-a015-20210326 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git/commit/?id=43e72121b5f667b10ba5adae96880e388dda55d1
        git remote add lee-mfd https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git
        git fetch --no-tags lee-mfd for-mfd-next
        git checkout 43e72121b5f667b10ba5adae96880e388dda55d1
        # save the attached .config to linux build tree
        make W=1 ARCH=x86_64 

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

All warnings (new ones prefixed by >>):

   drivers/mfd/intel_quark_i2c_gpio.c: In function 'intel_quark_i2c_setup':
>> drivers/mfd/intel_quark_i2c_gpio.c:161:25: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     161 |  struct resource *res = intel_quark_i2c_res;
         |                         ^~~~~~~~~~~~~~~~~~~
   drivers/mfd/intel_quark_i2c_gpio.c: In function 'intel_quark_gpio_setup':
   drivers/mfd/intel_quark_i2c_gpio.c:192:25: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     192 |  struct resource *res = intel_quark_gpio_res;
         |                         ^~~~~~~~~~~~~~~~~~~~


vim +/const +161 drivers/mfd/intel_quark_i2c_gpio.c

   157	
   158	static int intel_quark_i2c_setup(struct pci_dev *pdev)
   159	{
   160		struct mfd_cell *cell = &intel_quark_mfd_cells[MFD_I2C_BAR];
 > 161		struct resource *res = intel_quark_i2c_res;
   162		const struct dmi_system_id *dmi_id;
   163		struct dw_i2c_platform_data *pdata;
   164		struct device *dev = &pdev->dev;
   165	
   166		res[INTEL_QUARK_IORES_MEM].start = pci_resource_start(pdev, MFD_I2C_BAR);
   167		res[INTEL_QUARK_IORES_MEM].end = pci_resource_end(pdev, MFD_I2C_BAR);
   168	
   169		res[INTEL_QUARK_IORES_IRQ].start = pci_irq_vector(pdev, 0);
   170		res[INTEL_QUARK_IORES_IRQ].end = pci_irq_vector(pdev, 0);
   171	
   172		pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
   173		if (!pdata)
   174			return -ENOMEM;
   175	
   176		/* Normal mode by default */
   177		pdata->i2c_scl_freq = I2C_MAX_STANDARD_MODE_FREQ;
   178	
   179		dmi_id = dmi_first_match(dmi_platform_info);
   180		if (dmi_id)
   181			pdata->i2c_scl_freq = (uintptr_t)dmi_id->driver_data;
   182	
   183		cell->platform_data = pdata;
   184		cell->pdata_size = sizeof(*pdata);
   185	
   186		return 0;
   187	}
   188	

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

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Re: [lee-mfd:for-mfd-next 41/41] drivers/mfd/intel_quark_i2c_gpio.c:161:25: warning: initialization discards 'const' qualifier from pointer target type

[Andy Shevchenko]

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On Sat, Mar 27, 2021 at 02:43:06AM +0800, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next
> head:   43e72121b5f667b10ba5adae96880e388dda55d1
> commit: 43e72121b5f667b10ba5adae96880e388dda55d1 [41/41] mfd: intel_quark_i2c_gpio: Don't play dirty trick with const
> config: x86_64-randconfig-a015-20210326 (attached as .config)
> compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
> reproduce (this is a W=1 build):
>         # https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git/commit/?id=43e72121b5f667b10ba5adae96880e388dda55d1
>         git remote add lee-mfd https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git
>         git fetch --no-tags lee-mfd for-mfd-next
>         git checkout 43e72121b5f667b10ba5adae96880e388dda55d1
>         # save the attached .config to linux build tree
>         make W=1 ARCH=x86_64 
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
> 
> All warnings (new ones prefixed by >>):
> 
>    drivers/mfd/intel_quark_i2c_gpio.c: In function 'intel_quark_i2c_setup':
> >> drivers/mfd/intel_quark_i2c_gpio.c:161:25: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
>      161 |  struct resource *res = intel_quark_i2c_res;
>          |                         ^~~~~~~~~~~~~~~~~~~
>    drivers/mfd/intel_quark_i2c_gpio.c: In function 'intel_quark_gpio_setup':
>    drivers/mfd/intel_quark_i2c_gpio.c:192:25: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
>      192 |  struct resource *res = intel_quark_gpio_res;
>          |                         ^~~~~~~~~~~~~~~~~~~~
> vim +/const +161 drivers/mfd/intel_quark_i2c_gpio.c

Exactly the point of the last patch.

Maintainers should consider to merge for-fixes into their for-next branches.

-- 
With Best Regards,
Andy Shevchenko