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authorBartosz Golaszewski <bgolaszewski@baylibre.com>2020-10-20 10:24:04 +0300
committerBartosz Golaszewski <bgolaszewski@baylibre.com>2020-11-25 17:36:52 +0300
commit5300ebb695fa0672589ab191062392f686fca75d (patch)
tree9051d247bdccd5d1a69d064901b0996298543475 /drivers/gpio/gpio-exar.c
parent36fb7218e87833b17e3042e77f3b102c75129e8f (diff)
downloadlinux-5300ebb695fa0672589ab191062392f686fca75d.tar.xz
gpio: exar: use devm action for freeing the IDA and drop remove()
We can simplify the error path in probe() and drop remove() entirely if we provide a devm action for freeing the device ID. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Diffstat (limited to 'drivers/gpio/gpio-exar.c')
-rw-r--r--drivers/gpio/gpio-exar.c27
1 files changed, 12 insertions, 15 deletions
diff --git a/drivers/gpio/gpio-exar.c b/drivers/gpio/gpio-exar.c
index 2fdca872c7c0..d37de78247a6 100644
--- a/drivers/gpio/gpio-exar.c
+++ b/drivers/gpio/gpio-exar.c
@@ -111,6 +111,13 @@ static int exar_direction_input(struct gpio_chip *chip, unsigned int offset)
return 0;
}
+static void exar_devm_ida_free(void *data)
+{
+ struct exar_gpio_chip *exar_gpio = data;
+
+ ida_free(&ida_index, exar_gpio->index);
+}
+
static const struct regmap_config exar_regmap_config = {
.name = "exar-gpio",
.reg_bits = 16,
@@ -158,6 +165,10 @@ static int gpio_exar_probe(struct platform_device *pdev)
if (index < 0)
return index;
+ ret = devm_add_action_or_reset(dev, exar_devm_ida_free, exar_gpio);
+ if (ret)
+ return ret;
+
sprintf(exar_gpio->name, "exar_gpio%d", index);
exar_gpio->gpio_chip.label = exar_gpio->name;
exar_gpio->gpio_chip.parent = dev;
@@ -173,29 +184,15 @@ static int gpio_exar_probe(struct platform_device *pdev)
ret = devm_gpiochip_add_data(dev, &exar_gpio->gpio_chip, exar_gpio);
if (ret)
- goto err_destroy;
+ return ret;
platform_set_drvdata(pdev, exar_gpio);
return 0;
-
-err_destroy:
- ida_free(&ida_index, index);
- return ret;
-}
-
-static int gpio_exar_remove(struct platform_device *pdev)
-{
- struct exar_gpio_chip *exar_gpio = platform_get_drvdata(pdev);
-
- ida_free(&ida_index, exar_gpio->index);
-
- return 0;
}
static struct platform_driver gpio_exar_driver = {
.probe = gpio_exar_probe,
- .remove = gpio_exar_remove,
.driver = {
.name = DRIVER_NAME,
},