Re: [PATCH v10 12/16] leds: lp55xx: Add multicolor framework support to lp55xx

From: kbuild test robot
Date: Tue Oct 01 2019 - 20:31:42 EST


Hi Dan,

I love your patch! Yet something to improve:

[auto build test ERROR on j.anaszewski-leds/for-next]
[cannot apply to v5.4-rc1 next-20191001]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url: https://github.com/0day-ci/linux/commits/Dan-Murphy/Multicolor-Framework/20191002-062337
base: https://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds.git for-next
config: x86_64-randconfig-f004-201939 (attached as .config)
compiler: gcc-7 (Debian 7.4.0-13) 7.4.0
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64

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

All errors (new ones prefixed by >>):

ld: drivers/leds/leds-lp55xx-common.o: in function `lp55xx_set_brightness':
>> drivers/leds/leds-lp55xx-common.c:158: undefined reference to `led_mc_calc_brightness'
ld: drivers/leds/leds-lp55xx-common.o: in function `led_classdev_multicolor_register':
>> include/linux/led-class-multicolor.h:64: undefined reference to `led_classdev_multicolor_register_ext'

vim +158 drivers/leds/leds-lp55xx-common.c

147
148 static int lp55xx_set_brightness(struct led_classdev *cdev,
149 enum led_brightness brightness)
150 {
151 struct lp55xx_led *led = cdev_to_lp55xx_led(cdev);
152 struct lp55xx_device_config *cfg = led->chip->cfg;
153 int channel_num;
154 int ret;
155 int i;
156
157 if (led->mc_cdev.num_leds > 1) {
> 158 led_mc_calc_brightness(&led->mc_cdev, brightness,
159 &color_component[0]);
160
161 for (i = 0; i < led->mc_cdev.num_leds; i++) {
162 channel_num = lp55xx_get_channel(led,
163 color_component[i].color_id);
164 if (channel_num < 0)
165 return channel_num;
166
167 ret = cfg->color_intensity_fn(led, channel_num,
168 color_component[i].brightness);
169 if (ret)
170 return ret;
171 }
172 } else {
173 led->brightness = (u8)brightness;
174 ret = cfg->brightness_fn(led);
175 }
176
177 return ret;
178 }
179

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