diff options
| author | Logan Gunthorpe <logang@deltatee.com> | 2017-03-17 12:48:12 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-21 06:44:33 +0100 |
| commit | 111379dcccebc3eaf50ccf7daeb7d72210c1314c (patch) | |
| tree | 2eda06c13cd80b537c8dc38fcf1170cc5f22f363 | |
| parent | 358a89ca2c9680ceddc219ab25d1583619e9159f (diff) | |
| download | linux-stable-111379dcccebc3eaf50ccf7daeb7d72210c1314c.tar.gz linux-stable-111379dcccebc3eaf50ccf7daeb7d72210c1314c.tar.bz2 linux-stable-111379dcccebc3eaf50ccf7daeb7d72210c1314c.zip | |
gpiolib: utilize new cdev_device_add helper function
Replace the open coded registration of the cdev and dev with the
new device_add_cdev() helper. The helper replaces a common pattern by
taking the proper reference against the parent device and adding both
the cdev and the device.
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpio/gpiolib.c | 23 |
1 files changed, 8 insertions, 15 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 8b4d721d6d63..3ce2a27ee78f 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1035,18 +1035,14 @@ static int gpiochip_setup_dev(struct gpio_device *gdev) cdev_init(&gdev->chrdev, &gpio_fileops); gdev->chrdev.owner = THIS_MODULE; - gdev->chrdev.kobj.parent = &gdev->dev.kobj; gdev->dev.devt = MKDEV(MAJOR(gpio_devt), gdev->id); - status = cdev_add(&gdev->chrdev, gdev->dev.devt, 1); - if (status < 0) - chip_warn(gdev->chip, "failed to add char device %d:%d\n", - MAJOR(gpio_devt), gdev->id); - else - chip_dbg(gdev->chip, "added GPIO chardev (%d:%d)\n", - MAJOR(gpio_devt), gdev->id); - status = device_add(&gdev->dev); + + status = cdev_device_add(&gdev->chrdev, &gdev->dev); if (status) - goto err_remove_chardev; + return status; + + chip_dbg(gdev->chip, "added GPIO chardev (%d:%d)\n", + MAJOR(gpio_devt), gdev->id); status = gpiochip_sysfs_register(gdev); if (status) @@ -1061,9 +1057,7 @@ static int gpiochip_setup_dev(struct gpio_device *gdev) return 0; err_remove_device: - device_del(&gdev->dev); -err_remove_chardev: - cdev_del(&gdev->chrdev); + cdev_device_del(&gdev->chrdev, &gdev->dev); return status; } @@ -1347,8 +1341,7 @@ void gpiochip_remove(struct gpio_chip *chip) * be removed, else it will be dangling until the last user is * gone. */ - cdev_del(&gdev->chrdev); - device_del(&gdev->dev); + cdev_device_del(&gdev->chrdev, &gdev->dev); put_device(&gdev->dev); } EXPORT_SYMBOL_GPL(gpiochip_remove); |