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| author | Heiko Carstens <hca@linux.ibm.com> | 2024-05-06 21:44:49 +0200 |
|---|---|---|
| committer | Alexander Gordeev <agordeev@linux.ibm.com> | 2024-05-14 20:21:03 +0200 |
| commit | 4452e8ef8c364113495f414d7e6846d74d7eff81 (patch) | |
| tree | f1acd2784827dc06dfb3290c229277a8526c2c10 /net/iucv | |
| parent | 1084562ec858d96c02d3a47d4afb088922f5a2ca (diff) | |
| download | lwn-4452e8ef8c364113495f414d7e6846d74d7eff81.tar.gz lwn-4452e8ef8c364113495f414d7e6846d74d7eff81.zip | |
s390/iucv: Provide iucv_alloc_device() / iucv_release_device()
Provide iucv_alloc_device() and iucv_release_device() helper functions,
which can be used to deduplicate more or less identical IUCV device
allocation and release code in four different drivers.
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Alexandra Winter <wintera@linux.ibm.com>
Link: https://lore.kernel.org/r/20240506194454.1160315-2-hca@linux.ibm.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Diffstat (limited to 'net/iucv')
| -rw-r--r-- | net/iucv/iucv.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/net/iucv/iucv.c b/net/iucv/iucv.c index a4ab615ca3e3..9db7c2c0ae72 100644 --- a/net/iucv/iucv.c +++ b/net/iucv/iucv.c @@ -76,6 +76,41 @@ EXPORT_SYMBOL(iucv_bus); struct device *iucv_root; EXPORT_SYMBOL(iucv_root); +static void iucv_release_device(struct device *device) +{ + kfree(device); +} + +struct device *iucv_alloc_device(const struct attribute_group **attrs, + struct device_driver *driver, + void *priv, const char *fmt, ...) +{ + struct device *dev; + va_list vargs; + int rc; + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) + goto out_error; + va_start(vargs, fmt); + rc = dev_set_name(dev, fmt, vargs); + va_end(vargs); + if (rc) + goto out_error; + dev->bus = &iucv_bus; + dev->parent = iucv_root; + dev->driver = driver; + dev->groups = attrs; + dev->release = iucv_release_device; + dev_set_drvdata(dev, priv); + return dev; + +out_error: + kfree(dev); + return NULL; +} +EXPORT_SYMBOL(iucv_alloc_device); + static int iucv_available; /* General IUCV interrupt structure */ |