From: Krzysztof Adamski Date: Mon, 22 Feb 2016 08:24:00 +0000 (+0100) Subject: regulator: core: Request GPIO before creating sysfs entries X-Git-Tag: next-20160301~52^2~4^2~2 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=daad134d6649;p=karo-tx-linux.git regulator: core: Request GPIO before creating sysfs entries regulator_attr_is_visible (which is a .is_visible callback of regulator_dev_group attribute_grpup) checks rdev->ena_pin to decide if "status" file should be present in sysfs. This field is set at the end of regulator_ena_gpio_request so it has to be called before device_register() otherwise this test will always fail, causing "status" file to not be visible. Since regulator_attr_is_visible also tests for is_enabled() op, this problem is only visible for regulators that does not define this callback, like regulator-fixed.c. Signed-off-by: Krzysztof Adamski Signed-off-by: Mark Brown --- diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 744c9889f88d..3c987d76e684 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -3918,6 +3918,16 @@ regulator_register(const struct regulator_desc *regulator_desc, goto clean; } + if ((config->ena_gpio || config->ena_gpio_initialized) && + gpio_is_valid(config->ena_gpio)) { + ret = regulator_ena_gpio_request(rdev, config); + if (ret != 0) { + rdev_err(rdev, "Failed to request enable GPIO%d: %d\n", + config->ena_gpio, ret); + goto wash; + } + } + /* register with sysfs */ rdev->dev.class = ®ulator_class; rdev->dev.parent = dev; @@ -3931,16 +3941,6 @@ regulator_register(const struct regulator_desc *regulator_desc, dev_set_drvdata(&rdev->dev, rdev); - if ((config->ena_gpio || config->ena_gpio_initialized) && - gpio_is_valid(config->ena_gpio)) { - ret = regulator_ena_gpio_request(rdev, config); - if (ret != 0) { - rdev_err(rdev, "Failed to request enable GPIO%d: %d\n", - config->ena_gpio, ret); - goto wash; - } - } - /* set regulator constraints */ if (init_data) constraints = &init_data->constraints;