diff options
| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2012-05-15 17:49:12 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-05-16 14:42:46 +0200 |
| commit | f2962dae0efd81fed06d0687f300725ab063587a (patch) | |
| tree | 35ffb7fcbc9466e80e29da10e52ca82ab06dd3df /arch/s390 | |
| parent | s390: fix race on TIF_MCCK_PENDING (diff) | |
| download | linux-f2962dae0efd81fed06d0687f300725ab063587a.tar.xz linux-f2962dae0efd81fed06d0687f300725ab063587a.zip | |
s390/ccwgroup: introduce ccwgroup_create_dev
Add a new interface for drivers to create a group device. Via the old
interface ccwgroup_create_from_string we would create a virtual device
in a way that only the caller of this function would match and bind to.
Via the new ccwgroup_create_dev we stop playing games with the driver
core and directly set the driver of the new group device. For drivers
which have todo additional setup steps (like setting driver_data)
provide a new setup driver callback.
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/ccwgroup.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/s390/include/asm/ccwgroup.h b/arch/s390/include/asm/ccwgroup.h index f2ea2c56a7e1..f5cfb7925867 100644 --- a/arch/s390/include/asm/ccwgroup.h +++ b/arch/s390/include/asm/ccwgroup.h @@ -31,6 +31,7 @@ struct ccwgroup_device { * struct ccwgroup_driver - driver for ccw group devices * @max_slaves: maximum number of slave devices * @driver_id: unique id + * @setup: function called during device creation to setup the device * @probe: function called on probe * @remove: function called on remove * @set_online: function called when device is set online @@ -47,6 +48,7 @@ struct ccwgroup_driver { int max_slaves; unsigned long driver_id; + int (*setup) (struct ccwgroup_device *); int (*probe) (struct ccwgroup_device *); void (*remove) (struct ccwgroup_device *); int (*set_online) (struct ccwgroup_device *); @@ -63,6 +65,9 @@ struct ccwgroup_driver { extern int ccwgroup_driver_register (struct ccwgroup_driver *cdriver); extern void ccwgroup_driver_unregister (struct ccwgroup_driver *cdriver); +int ccwgroup_create_dev(struct device *root, unsigned int creator_id, + struct ccw_driver *cdrv, struct ccwgroup_driver *gdrv, + int num_devices, const char *buf); int ccwgroup_create_from_string(struct device *root, unsigned int creator_id, struct ccw_driver *cdrv, int num_devices, const char *buf); |