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Commit a166c368 authored by Sebastian Ott's avatar Sebastian Ott Committed by Martin Schwidefsky
Browse files

s390/cio: add test for ccwgroup device 



Add a test to check if a given device is a ccwgroup device.

Signed-off-by: default avatarSebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 19965230

arch/s390/include/asm/ccwgroup.h

+10 −0
Original line number Diff line number Diff line
@@ -73,4 +73,14 @@ extern void ccwgroup_remove_ccwdev(struct ccw_device *cdev); 


#define to_ccwgroupdev(x) container_of((x), struct ccwgroup_device, dev)

#define to_ccwgroupdrv(x) container_of((x), struct ccwgroup_driver, driver)



#if IS_ENABLED(CONFIG_CCWGROUP)

bool dev_is_ccwgroup(struct device *dev);

#else /* CONFIG_CCWGROUP */

static inline bool dev_is_ccwgroup(struct device *dev)

{

	return false;

}

#endif /* CONFIG_CCWGROUP */



#endif

drivers/s390/cio/ccwgroup.c

+6 −0
Original line number Diff line number Diff line
@@ -561,6 +561,12 @@ static struct bus_type ccwgroup_bus_type = { 
	.pm = &ccwgroup_pm_ops,

};



bool dev_is_ccwgroup(struct device *dev)

{

	return dev->bus == &ccwgroup_bus_type;

}

EXPORT_SYMBOL(dev_is_ccwgroup);



/**

 * ccwgroup_driver_register() - register a ccw group driver

 * @cdriver: driver to be registered