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Commit 8cec0e7b authored by Grant Likely's avatar Grant Likely
Browse files

of/device: Add OF style matching helper function 



Add of_driver_match_device() helper function.  This function can be used
by bus types to determine if a driver works with a device when using OF
style matching.  If CONFIG_OF is unselected, then it is a nop.

Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
CC: Greg Kroah-Hartman <gregkh@suse.de>
CC: Michal Simek <monstr@monstr.eu>
CC: Grant Likely <grant.likely@secretlab.ca>
CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: Stephen Rothwell <sfr@canb.auug.org.au>
CC: linux-kernel@vger.kernel.org
CC: microblaze-uclinux@itee.uq.edu.au
CC: linuxppc-dev@ozlabs.org
CC: devicetree-discuss@lists.ozlabs.org
parent 2e13cba8

drivers/of/device.c

+1 −1
Original line number Diff line number Diff line
@@ -20,7 +20,7 @@ 
const struct of_device_id *of_match_device(const struct of_device_id *matches,

					   const struct device *dev)

{

	if (!dev->of_node)

	if ((!matches) || (!dev->of_node))

		return NULL;

	return of_match_node(matches, dev->of_node);

}

include/linux/of_device.h

+19 −0
Original line number Diff line number Diff line
@@ -30,6 +30,17 @@ 
extern const struct of_device_id *of_match_device(

	const struct of_device_id *matches, const struct device *dev);



/**

 * of_driver_match_device - Tell if a driver's of_match_table matches a device.

 * @drv: the device_driver structure to test

 * @dev: the device structure to match against

 */

static inline int of_driver_match_device(const struct device *dev,

					 const struct device_driver *drv)

{

	return of_match_device(drv->of_match_table, dev) != NULL;

}



extern struct of_device *of_dev_get(struct of_device *dev);

extern void of_dev_put(struct of_device *dev);
@@ -48,6 +59,14 @@ extern ssize_t of_device_get_modalias(struct device *dev, 
extern int of_device_uevent(struct device *dev, struct kobj_uevent_env *env);





#else /* CONFIG_OF_DEVICE */



static inline int of_driver_match_device(struct device *dev,

					 struct device_driver *drv)

{

	return 0;

}



#endif /* CONFIG_OF_DEVICE */



#endif /* _LINUX_OF_DEVICE_H */