Re: [PATCH v9 2/4] leds: add TI/National Semiconductor LP5812 LED Driver

[kernel test robot <lkp@intel.com>]

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TO: Nam Tran <trannamatk@gmail.com>
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CC: Nam Tran <trannamatk@gmail.com>

Hi Nam,

kernel test robot noticed the following build warnings:

[auto build test WARNING on f09079bd04a924c72d555cd97942d5f8d7eca98c]

url:    https://github.com/intel-lab-lkp/linux/commits/Nam-Tran/dt-bindings-leds-add-TI-National-Semiconductor-LP5812-LED-Driver/20250611-100314
base:   f09079bd04a924c72d555cd97942d5f8d7eca98c
patch link:    https://lore.kernel.org/r/20250610174319.183375-4-trannamatk%40gmail.com
patch subject: [PATCH v9 2/4] leds: add TI/National Semiconductor LP5812 LED Driver
:::::: branch date: 3 days ago
:::::: commit date: 3 days ago
config: powerpc-randconfig-r072-20250613 (https://download.01.org/0day-ci/archive/20250613/202506132206.dBqw1BIJ-lkp@intel.com/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project f819f46284f2a79790038e1f6649172789734ae8)

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@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Closes: https://lore.kernel.org/r/202506132206.dBqw1BIJ-lkp@intel.com/

smatch warnings:
drivers/leds/rgb/leds-lp5812.c:827 lp5812_multicolor_brightness() error: uninitialized symbol 'ret'.

vim +/ret +827 drivers/leds/rgb/leds-lp5812.c

8089ca4ee5bd17 Nam Tran 2025-06-11  812  
8089ca4ee5bd17 Nam Tran 2025-06-11  813  static int lp5812_multicolor_brightness(struct lp5812_led *led)
8089ca4ee5bd17 Nam Tran 2025-06-11  814  {
8089ca4ee5bd17 Nam Tran 2025-06-11  815  	struct lp5812_chip *chip = led->chip;
8089ca4ee5bd17 Nam Tran 2025-06-11  816  	int ret, i;
8089ca4ee5bd17 Nam Tran 2025-06-11  817  
8089ca4ee5bd17 Nam Tran 2025-06-11  818  	guard(mutex)(&chip->lock);
8089ca4ee5bd17 Nam Tran 2025-06-11  819  	for (i = 0; i < led->mc_cdev.num_colors; i++) {
8089ca4ee5bd17 Nam Tran 2025-06-11  820  		ret = lp5812_manual_dc_pwm_control(chip, led->mc_cdev.subled_info[i].channel,
8089ca4ee5bd17 Nam Tran 2025-06-11  821  						   led->mc_cdev.subled_info[i].brightness,
8089ca4ee5bd17 Nam Tran 2025-06-11  822  						   LP5812_DIMMING_PWM);
8089ca4ee5bd17 Nam Tran 2025-06-11  823  		if (ret)
8089ca4ee5bd17 Nam Tran 2025-06-11  824  			break;
8089ca4ee5bd17 Nam Tran 2025-06-11  825  	}
8089ca4ee5bd17 Nam Tran 2025-06-11  826  
8089ca4ee5bd17 Nam Tran 2025-06-11 @827  	return ret;
8089ca4ee5bd17 Nam Tran 2025-06-11  828  }
8089ca4ee5bd17 Nam Tran 2025-06-11  829  

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