tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: cdb06e9d8f520c969676e7d6778cffe5894f079f commit: 7bc04215a66b60e198aecaee8418f6d79fa19faa mt76: add driver code for MT76x2e date: 3 months ago config: x86_64-randconfig-v0-03110120 (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: git checkout 7bc04215a66b60e198aecaee8418f6d79fa19faa # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): drivers/net/wireless/mediatek/mt76/mac80211.o: In function `mt76_led_init': >> drivers/net/wireless/mediatek/mt76/mac80211.c:119: undefined reference to `devm_of_led_classdev_register' vim +119 drivers/net/wireless/mediatek/mt76/mac80211.c 17f1de56 Felix Fietkau 2017-11-21 92 17f1de56 Felix Fietkau 2017-11-21 93 static int mt76_led_init(struct mt76_dev *dev) 17f1de56 Felix Fietkau 2017-11-21 94 { 17f1de56 Felix Fietkau 2017-11-21 95 struct device_node *np = dev->dev->of_node; 17f1de56 Felix Fietkau 2017-11-21 96 struct ieee80211_hw *hw = dev->hw; 17f1de56 Felix Fietkau 2017-11-21 97 int led_pin; 17f1de56 Felix Fietkau 2017-11-21 98 17f1de56 Felix Fietkau 2017-11-21 99 if (!dev->led_cdev.brightness_set && !dev->led_cdev.blink_set) 17f1de56 Felix Fietkau 2017-11-21 100 return 0; 17f1de56 Felix Fietkau 2017-11-21 101 17f1de56 Felix Fietkau 2017-11-21 102 snprintf(dev->led_name, sizeof(dev->led_name), 17f1de56 Felix Fietkau 2017-11-21 103 "mt76-%s", wiphy_name(hw->wiphy)); 17f1de56 Felix Fietkau 2017-11-21 104 17f1de56 Felix Fietkau 2017-11-21 105 dev->led_cdev.name = dev->led_name; 17f1de56 Felix Fietkau 2017-11-21 106 dev->led_cdev.default_trigger = 17f1de56 Felix Fietkau 2017-11-21 107 ieee80211_create_tpt_led_trigger(hw, 17f1de56 Felix Fietkau 2017-11-21 108 IEEE80211_TPT_LEDTRIG_FL_RADIO, 17f1de56 Felix Fietkau 2017-11-21 109 mt76_tpt_blink, 17f1de56 Felix Fietkau 2017-11-21 110 ARRAY_SIZE(mt76_tpt_blink)); 17f1de56 Felix Fietkau 2017-11-21 111 17f1de56 Felix Fietkau 2017-11-21 112 np = of_get_child_by_name(np, "led"); 17f1de56 Felix Fietkau 2017-11-21 113 if (np) { 17f1de56 Felix Fietkau 2017-11-21 114 if (!of_property_read_u32(np, "led-sources", &led_pin)) 17f1de56 Felix Fietkau 2017-11-21 115 dev->led_pin = led_pin; 17f1de56 Felix Fietkau 2017-11-21 116 dev->led_al = of_property_read_bool(np, "led-active-low"); 17f1de56 Felix Fietkau 2017-11-21 117 } 17f1de56 Felix Fietkau 2017-11-21 118 17f1de56 Felix Fietkau 2017-11-21 @119 return devm_led_classdev_register(dev->dev, &dev->led_cdev); 17f1de56 Felix Fietkau 2017-11-21 120 } 17f1de56 Felix Fietkau 2017-11-21 121 :::::: The code at line 119 was first introduced by commit :::::: 17f1de56df051229988aab37e01971c9713c4a31 mt76: add common code shared between multiple chipsets :::::: TO: Felix Fietkau :::::: CC: Kalle Valo --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation