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ARM: sa1111: cleanup sub-device registration and unregistration

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Move the releasing of resources out of the release function - this
allows a cleaner and more conventional arrangement of the registration
failure paths and a saner unregistration process for these devices.

Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2012-01-29 10:20:00 +00:00
parent 21d1c7702e
commit 924e1d4910
1 changed files with 16 additions and 11 deletions
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27
arch/arm/common/sa1111.c
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@ -610,7 +610,6 @@ static void sa1111_dev_release(struct device *_dev)
{
struct sa1111_dev *dev = SA1111_DEV(_dev);
release_resource(&dev->res);
kfree(dev);
}
@ -625,9 +624,10 @@ sa1111_init_one_child(struct sa1111 *sachip, struct resource *parent,
dev = kzalloc(sizeof(struct sa1111_dev), GFP_KERNEL);
if (!dev) {
ret = -ENOMEM;
goto out;
goto err_alloc;
}
device_initialize(&dev->dev);
dev_set_name(&dev->dev, "%4.4lx", info->offset);
dev->devid = info->devid;
dev->dev.parent = sachip->dev;
@ -657,17 +657,19 @@ sa1111_init_one_child(struct sa1111 *sachip, struct resource *parent,
if (ret) {
printk("SA1111: failed to allocate resource for %s\n",
dev->res.name);
dev_set_name(&dev->dev, NULL);
kfree(dev);
goto out;
goto err_resource;
}
ret = device_register(&dev->dev);
if (ret) {
release_resource(&dev->res);
kfree(dev);
}
ret = device_add(&dev->dev);
if (ret)
goto err_add;
return 0;
err_add:
release_resource(&dev->res);
err_resource:
put_device(&dev->dev);
err_alloc:
return ret;
}
@ -813,7 +815,10 @@ __sa1111_probe(struct device *me, struct resource *mem, int irq)
static int sa1111_remove_one(struct device *dev, void *data)
{
device_unregister(dev);
struct sa1111_dev *sadev = SA1111_DEV(dev);
device_del(&sadev->dev);
release_resource(&sadev->res);
put_device(&sadev->dev);
return 0;
}