Re: [PATCH v6 1/5] media: v4l2-core: Make the v4l2-core code enable/disable the privacy LED if present

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Hi Hans,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v6.2-rc5]
[cannot apply to media-tree/master]
[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/Hans-de-Goede/media-v4l2-core-Make-the-v4l2-core-code-enable-disable-the-privacy-LED-if-present/20230128-131233
patch link:    https://lore.kernel.org/r/20230127203729.10205-2-hdegoede%40redhat.com
patch subject: [PATCH v6 1/5] media: v4l2-core: Make the v4l2-core code enable/disable the privacy LED if present
config: riscv-randconfig-r026-20230123 (https://download.01.org/0day-ci/archive/20230128/202301281534.9Z8xRsrX-lkp@xxxxxxxxx/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 4196ca3278f78c6e19246e54ab0ecb364e37d66a)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/000ccec1824b3256e3fc1a94079bb953f19faab5
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Hans-de-Goede/media-v4l2-core-Make-the-v4l2-core-code-enable-disable-the-privacy-LED-if-present/20230128-131233
        git checkout 000ccec1824b3256e3fc1a94079bb953f19faab5
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/media/v4l2-core/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

>> drivers/media/v4l2-core/v4l2-subdev.c:1124:20: error: call to undeclared function 'led_get'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           sd->privacy_led = led_get(sd->dev, "privacy-led");
                             ^
>> drivers/media/v4l2-core/v4l2-subdev.c:1124:18: error: incompatible integer to pointer conversion assigning to 'struct led_classdev *' from 'int' [-Wint-conversion]
           sd->privacy_led = led_get(sd->dev, "privacy-led");
                           ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   2 errors generated.


vim +/led_get +1124 drivers/media/v4l2-core/v4l2-subdev.c

  1120	
  1121	int v4l2_subdev_get_privacy_led(struct v4l2_subdev *sd)
  1122	{
  1123	#if IS_REACHABLE(CONFIG_LEDS_CLASS)
> 1124		sd->privacy_led = led_get(sd->dev, "privacy-led");
  1125		if (IS_ERR(sd->privacy_led) && PTR_ERR(sd->privacy_led) != -ENOENT)
  1126			return dev_err_probe(sd->dev, PTR_ERR(sd->privacy_led), "getting privacy LED\n");
  1127	
  1128		if (!IS_ERR_OR_NULL(sd->privacy_led)) {
  1129			mutex_lock(&sd->privacy_led->led_access);
  1130			led_sysfs_disable(sd->privacy_led);
  1131			led_trigger_remove(sd->privacy_led);
  1132			led_set_brightness(sd->privacy_led, 0);
  1133			mutex_unlock(&sd->privacy_led->led_access);
  1134		}
  1135	#endif
  1136		return 0;
  1137	}
  1138	EXPORT_SYMBOL_GPL(v4l2_subdev_get_privacy_led);
  1139	

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



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