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of/device: Rework to use common platform_device_alloc() for allocating devices

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The current code allocates and manages platform_devices created from
the device tree manually.  It also uses an unsafe shortcut for
allocating the platform_device and the resource table at the same
time. (which I added in the last rework; sorry).

This patch refactors the code to use platform_device_alloc() for
allocating new devices.  This reduces the amount of custom code
implemented by of_platform, eliminates the unsafe alloc trick, and has
the side benefit of letting the platform_bus code manage freeing the
device data and resources when the device is freed.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Grant Likely 2010-10-20 11:45:13 -06:00
parent bda80da469
commit 7096d04221
5 changed files with 32 additions and 44 deletions
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13
include/linux/of_device.h
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@ -27,20 +27,19 @@ static inline int of_driver_match_device(const struct device *dev,
extern struct platform_device *of_dev_get(struct platform_device *dev);
extern void of_dev_put(struct platform_device *dev);
extern int of_device_add(struct platform_device *pdev);
extern int of_device_register(struct platform_device *ofdev);
extern void of_device_unregister(struct platform_device *ofdev);
extern void of_release_dev(struct device *dev);
static inline void of_device_free(struct platform_device *dev)
{
of_release_dev(&dev->dev);
}
extern ssize_t of_device_get_modalias(struct device *dev,
char *str, ssize_t len);
extern int of_device_uevent(struct device *dev, struct kobj_uevent_env *env);
static inline void of_device_node_put(struct device *dev)
{
of_node_put(dev->of_node);
}
#else /* CONFIG_OF_DEVICE */
@ -56,6 +55,8 @@ static inline int of_device_uevent(struct device *dev,
return -ENODEV;
}
static inline void of_device_node_put(struct device *dev) { }
#endif /* CONFIG_OF_DEVICE */
#endif /* _LINUX_OF_DEVICE_H */