Hi Charles, [auto build test ERROR on gpio/for-next] [also build test ERROR on v4.11-rc5 next-20170407] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Charles-Keepax/mfd-arizona-Add-GPIO-maintain-state-flag/20170408-111119 base: https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git for-next config: x86_64-randconfig-x009-201714 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All error/warnings (new ones prefixed by >>): drivers/gpio/gpio-arizona.c: In function 'arizona_gpio_direction_in': >> drivers/gpio/gpio-arizona.c:44:3: error: implicit declaration of function 'pm_runtime_mark_last_busy' [-Werror=implicit-function-declaration] pm_runtime_mark_last_busy(chip->parent); ^~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/gpio/gpio-arizona.c:45:3: error: implicit declaration of function 'pm_runtime_put_autosuspend' [-Werror=implicit-function-declaration] pm_runtime_put_autosuspend(chip->parent); ^~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpio/gpio-arizona.c: In function 'arizona_gpio_set': >> drivers/gpio/gpio-arizona.c:93:9: error: implicit declaration of function 'pm_runtime_get_sync' [-Werror=implicit-function-declaration] ret = pm_runtime_get_sync(chip->parent); ^~~~~~~~~~~~~~~~~~~ >> drivers/gpio/gpio-arizona.c:96:11: warning: 'return' with a value, in function returning void return ret; ^~~ drivers/gpio/gpio-arizona.c:82:13: note: declared here static void arizona_gpio_set(struct gpio_chip *chip, unsigned offset, int value) ^~~~~~~~~~~~~~~~ drivers/gpio/gpio-arizona.c: In function 'arizona_gpio_probe': >> drivers/gpio/gpio-arizona.c:185:2: error: implicit declaration of function 'pm_runtime_enable' [-Werror=implicit-function-declaration] pm_runtime_enable(&pdev->dev); ^~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/pm_runtime_mark_last_busy +44 drivers/gpio/gpio-arizona.c 38 int status = arizona_gpio->status[offset]; 39 40 status &= (ARIZONA_GP_MAINTAIN | ARIZONA_GP_STATE_OUTPUT); 41 if (status == (ARIZONA_GP_MAINTAIN | ARIZONA_GP_STATE_OUTPUT)) { 42 arizona_gpio->status[offset] &= ~ARIZONA_GP_STATE_OUTPUT; 43 > 44 pm_runtime_mark_last_busy(chip->parent); > 45 pm_runtime_put_autosuspend(chip->parent); 46 } 47 48 return regmap_update_bits(arizona->regmap, ARIZONA_GPIO1_CTRL + offset, 49 ARIZONA_GPN_DIR, ARIZONA_GPN_DIR); 50 } 51 52 static int arizona_gpio_get(struct gpio_chip *chip, unsigned offset) 53 { 54 struct arizona_gpio *arizona_gpio = gpiochip_get_data(chip); 55 struct arizona *arizona = arizona_gpio->arizona; 56 unsigned int val; 57 int ret; 58 59 ret = regmap_read(arizona->regmap, ARIZONA_GPIO1_CTRL + offset, &val); 60 if (ret < 0) 61 return ret; 62 63 if (val & ARIZONA_GPN_LVL) 64 return 1; 65 else 66 return 0; 67 } 68 69 static int arizona_gpio_direction_out(struct gpio_chip *chip, 70 unsigned offset, int value) 71 { 72 struct arizona_gpio *arizona_gpio = gpiochip_get_data(chip); 73 struct arizona *arizona = arizona_gpio->arizona; 74 75 if (value) 76 value = ARIZONA_GPN_LVL; 77 78 return regmap_update_bits(arizona->regmap, ARIZONA_GPIO1_CTRL + offset, 79 ARIZONA_GPN_DIR | ARIZONA_GPN_LVL, value); 80 } 81 82 static void arizona_gpio_set(struct gpio_chip *chip, unsigned offset, int value) 83 { 84 struct arizona_gpio *arizona_gpio = gpiochip_get_data(chip); 85 struct arizona *arizona = arizona_gpio->arizona; 86 int status = arizona_gpio->status[offset]; 87 int ret; 88 89 status &= (ARIZONA_GP_MAINTAIN | ARIZONA_GP_STATE_OUTPUT); 90 if (status == ARIZONA_GP_MAINTAIN) { 91 arizona_gpio->status[offset] |= ARIZONA_GP_STATE_OUTPUT; 92 > 93 ret = pm_runtime_get_sync(chip->parent); 94 if (ret < 0) { 95 dev_err(chip->parent, "Failed to resume: %d\n", ret); > 96 return ret; 97 } 98 } 99 100 if (value) 101 value = ARIZONA_GPN_LVL; 102 103 regmap_update_bits(arizona->regmap, ARIZONA_GPIO1_CTRL + offset, 104 ARIZONA_GPN_LVL, value); 105 } 106 107 static int arizona_gpio_of_xlate(struct gpio_chip *chip, 108 const struct of_phandle_args *gpiospec, 109 u32 *flags) 110 { 111 struct arizona_gpio *arizona_gpio = gpiochip_get_data(chip); 112 u32 offset = gpiospec->args[0]; 113 u32 bits = gpiospec->args[1]; 114 115 if (gpiospec->args_count < chip->of_gpio_n_cells) 116 return -EINVAL; 117 118 if (offset >= chip->ngpio) 119 return -EINVAL; 120 121 if (flags) 122 *flags = bits & ~ARIZONA_GP_MAINTAIN; 123 124 if (bits & ARIZONA_GP_MAINTAIN) 125 arizona_gpio->status[offset] |= ARIZONA_GP_MAINTAIN; 126 127 return offset; 128 } 129 130 static const struct gpio_chip template_chip = { 131 .label = "arizona", 132 .owner = THIS_MODULE, 133 .direction_input = arizona_gpio_direction_in, 134 .get = arizona_gpio_get, 135 .direction_output = arizona_gpio_direction_out, 136 .set = arizona_gpio_set, 137 .can_sleep = true, 138 .of_xlate = arizona_gpio_of_xlate, 139 .of_gpio_n_cells = 2, 140 }; 141 142 static int arizona_gpio_probe(struct platform_device *pdev) 143 { 144 struct arizona *arizona = dev_get_drvdata(pdev->dev.parent); 145 struct arizona_pdata *pdata = dev_get_platdata(arizona->dev); 146 struct arizona_gpio *arizona_gpio; 147 int ret; 148 149 arizona_gpio = devm_kzalloc(&pdev->dev, sizeof(*arizona_gpio), 150 GFP_KERNEL); 151 if (!arizona_gpio) 152 return -ENOMEM; 153 154 arizona_gpio->arizona = arizona; 155 arizona_gpio->gpio_chip = template_chip; 156 arizona_gpio->gpio_chip.parent = &pdev->dev; 157 #ifdef CONFIG_OF_GPIO 158 arizona_gpio->gpio_chip.of_node = arizona->dev->of_node; 159 #endif 160 161 switch (arizona->type) { 162 case WM5102: 163 case WM5110: 164 case WM8280: 165 case WM8997: 166 case WM8998: 167 case WM1814: 168 arizona_gpio->gpio_chip.ngpio = 5; 169 break; 170 case WM1831: 171 case CS47L24: 172 arizona_gpio->gpio_chip.ngpio = 2; 173 break; 174 default: 175 dev_err(&pdev->dev, "Unknown chip variant %d\n", 176 arizona->type); 177 return -EINVAL; 178 } 179 180 if (pdata && pdata->gpio_base) 181 arizona_gpio->gpio_chip.base = pdata->gpio_base; 182 else 183 arizona_gpio->gpio_chip.base = -1; 184 > 185 pm_runtime_enable(&pdev->dev); 186 187 ret = devm_gpiochip_add_data(&pdev->dev, &arizona_gpio->gpio_chip, 188 arizona_gpio); 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