diff options
| -rw-r--r-- | arch/s390/include/asm/ccwgroup.h | 10 | ||||
| -rw-r--r-- | drivers/s390/cio/ccwgroup.c | 6 |
2 files changed, 16 insertions, 0 deletions
diff --git a/arch/s390/include/asm/ccwgroup.h b/arch/s390/include/asm/ccwgroup.h index 99aa817dad32..860cab7479c3 100644 --- a/arch/s390/include/asm/ccwgroup.h +++ b/arch/s390/include/asm/ccwgroup.h @@ -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 diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c index 5535312602af..db9c854088bc 100644 --- a/drivers/s390/cio/ccwgroup.c +++ b/drivers/s390/cio/ccwgroup.c @@ -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 |