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| author | Hans de Goede <hdegoede@redhat.com> | 2023-01-20 12:45:15 +0100 |
|---|---|---|
| committer | Lee Jones <lee@kernel.org> | 2023-01-27 12:06:17 +0100 |
| commit | fafef58ef419f08bb761714a109870b617ac0bc0 (patch) | |
| tree | 6170381564ef527c1f876b6ef16488d06e4e5d8a /drivers/leds/led-class.c | |
| parent | leds: led-class: Add missing put_device() to led_put() (diff) | |
| download | linux-fafef58ef419f08bb761714a109870b617ac0bc0.tar.xz linux-fafef58ef419f08bb761714a109870b617ac0bc0.zip | |
leds: led-class: Add led_module_get() helper
Split out part of of_led_get() into a generic led_module_get() helper
function.
This is a preparation patch for adding a generic (non devicetree specific)
led_get() function.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230120114524.408368-3-hdegoede@redhat.com
Diffstat (limited to 'drivers/leds/led-class.c')
| -rw-r--r-- | drivers/leds/led-class.c | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c index 7391d2cf1370..743d97b082dc 100644 --- a/drivers/leds/led-class.c +++ b/drivers/leds/led-class.c @@ -215,6 +215,23 @@ static int led_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(leds_class_dev_pm_ops, led_suspend, led_resume); +static struct led_classdev *led_module_get(struct device *led_dev) +{ + struct led_classdev *led_cdev; + + if (!led_dev) + return ERR_PTR(-EPROBE_DEFER); + + led_cdev = dev_get_drvdata(led_dev); + + if (!try_module_get(led_cdev->dev->parent->driver->owner)) { + put_device(led_cdev->dev); + return ERR_PTR(-ENODEV); + } + + return led_cdev; +} + /** * of_led_get() - request a LED device via the LED framework * @np: device node to get the LED device from @@ -226,7 +243,6 @@ static SIMPLE_DEV_PM_OPS(leds_class_dev_pm_ops, led_suspend, led_resume); struct led_classdev *of_led_get(struct device_node *np, int index) { struct device *led_dev; - struct led_classdev *led_cdev; struct device_node *led_node; led_node = of_parse_phandle(np, "leds", index); @@ -236,17 +252,7 @@ struct led_classdev *of_led_get(struct device_node *np, int index) led_dev = class_find_device_by_of_node(leds_class, led_node); of_node_put(led_node); - if (!led_dev) - return ERR_PTR(-EPROBE_DEFER); - - led_cdev = dev_get_drvdata(led_dev); - - if (!try_module_get(led_cdev->dev->parent->driver->owner)) { - put_device(led_cdev->dev); - return ERR_PTR(-ENODEV); - } - - return led_cdev; + return led_module_get(led_dev); } EXPORT_SYMBOL_GPL(of_led_get); |