Re: [PATCH v7 1/8] mfd: core: make platform_data pointer const in struct mfd_cell

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Hi Heiko,

kernel test robot noticed the following build warnings:

[auto build test WARNING on next-20240905]
[also build test WARNING on v6.11-rc6]
[cannot apply to lee-mfd/for-mfd-next groeck-staging/hwmon-next lee-leds/for-leds-next linus/master lee-mfd/for-mfd-fixes v6.11-rc6 v6.11-rc5 v6.11-rc4]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Heiko-Stuebner/mfd-core-make-platform_data-pointer-const-in-struct-mfd_cell/20240906-025553
base:   next-20240905
patch link:    https://lore.kernel.org/r/20240905185232.2899464-2-heiko%40sntech.de
patch subject: [PATCH v7 1/8] mfd: core: make platform_data pointer const in struct mfd_cell
config: arm-randconfig-001-20240907 (https://download.01.org/0day-ci/archive/20240907/202409071933.IYm8oa1N-lkp@xxxxxxxxx/config)
compiler: arm-linux-gnueabi-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240907/202409071933.IYm8oa1N-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/202409071933.IYm8oa1N-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

   drivers/hid/hid-sensor-hub.c: In function 'sensor_hub_remove':
>> drivers/hid/hid-sensor-hub.c:745:25: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     745 |                         data->hid_sensor_hub_client_devs[i].platform_data;
         |                         ^~~~


vim +/const +745 drivers/hid/hid-sensor-hub.c

401ca24fb34aee srinivas pandruvada 2012-09-05  732  
401ca24fb34aee srinivas pandruvada 2012-09-05  733  static void sensor_hub_remove(struct hid_device *hdev)
401ca24fb34aee srinivas pandruvada 2012-09-05  734  {
401ca24fb34aee srinivas pandruvada 2012-09-05  735  	struct sensor_hub_data *data = hid_get_drvdata(hdev);
401ca24fb34aee srinivas pandruvada 2012-09-05  736  	unsigned long flags;
e651a1da442ae0 Srinivas Pandruvada 2015-02-19  737  	int i;
401ca24fb34aee srinivas pandruvada 2012-09-05  738  
401ca24fb34aee srinivas pandruvada 2012-09-05  739  	hid_dbg(hdev, " hardware removed\n");
401ca24fb34aee srinivas pandruvada 2012-09-05  740  	hid_hw_close(hdev);
f2f13a68c37c13 Axel Lin            2012-09-19  741  	hid_hw_stop(hdev);
401ca24fb34aee srinivas pandruvada 2012-09-05  742  	spin_lock_irqsave(&data->lock, flags);
e651a1da442ae0 Srinivas Pandruvada 2015-02-19  743  	for (i = 0; i < data->hid_sensor_client_cnt; ++i) {
e651a1da442ae0 Srinivas Pandruvada 2015-02-19  744  		struct hid_sensor_hub_device *hsdev =
e651a1da442ae0 Srinivas Pandruvada 2015-02-19 @745  			data->hid_sensor_hub_client_devs[i].platform_data;
e651a1da442ae0 Srinivas Pandruvada 2015-02-19  746  		if (hsdev->pending.status)
e651a1da442ae0 Srinivas Pandruvada 2015-02-19  747  			complete(&hsdev->pending.ready);
e651a1da442ae0 Srinivas Pandruvada 2015-02-19  748  	}
401ca24fb34aee srinivas pandruvada 2012-09-05  749  	spin_unlock_irqrestore(&data->lock, flags);
401ca24fb34aee srinivas pandruvada 2012-09-05  750  	mfd_remove_devices(&hdev->dev);
401ca24fb34aee srinivas pandruvada 2012-09-05  751  	mutex_destroy(&data->mutex);
401ca24fb34aee srinivas pandruvada 2012-09-05  752  }
401ca24fb34aee srinivas pandruvada 2012-09-05  753  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki




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