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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2017-02-15 13:45:07 +0300 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-05-23 09:06:58 +0300 |
| commit | a166c368e7dbc84a5d8f013d9fda99f47f9c9f13 (patch) | |
| tree | c6e16d75453221b62407f766f98120e2d4a28daf | |
| parent | 199652309a4d6635fca19d7528d73ab9e219bd9a (diff) | |
| download | linux-a166c368e7dbc84a5d8f013d9fda99f47f9c9f13.tar.xz | |
s390/cio: add test for ccwgroup device
Add a test to check if a given device is a ccwgroup device.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| -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 |