BMC/Intel-BMC/linux.git/arch/s390/include/asm/ccwgroup.h, branch dev

s390: fix new ccwgroup.h kernel-doc warning

2014-05-20T06:58:45+00:00

Fix new s390 kernel-doc warning: Warning(arch/s390/include/asm/ccwgroup.h:27): No description found for parameter 'ungroup_work' Signed-off-by: Randy Dunlap Cc: Sebastian Ott Cc: Peter Oberparleiter Cc: linux-s390@vger.kernel.org Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: linux390@de.ibm.com Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky

s390/ccwgroup: Fix memory corruption

2014-04-25T19:25:14+00:00

commit 0b60f9ead5d4816e7e3d6e28f4a0d22d4a1b2513 (s390: use device_remove_file_self() instead of device_schedule_callback()) caused random memory corruption on my s390 box. Turns out that the last element of the ccwgroup structure is of dynamic size, so we must move the newly introduced work structure _before_ the zero length array. Signed-off-by: Christian Borntraeger CC: Tejun Heo CC: Martin Schwidefsky CC: Heiko Carstens CC: Sebastian Ott CC: Peter Oberparleiter Acked-by: Tejun Heo Signed-off-by: Greg Kroah-Hartman

s390: use device_remove_file_self() instead of device_schedule_callback()

2014-02-07T23:42:41+00:00

driver-core now supports synchrnous self-deletion of attributes and the asynchrnous removal mechanism is scheduled for removal. Use it instead of device_schedule_callback(). * Conversions in arch/s390/pci/pci_sysfs.c and drivers/s390/block/dcssblk.c are straightforward. * drivers/s390/cio/ccwgroup.c is a bit more tricky because ccwgroup_notifier() was (ab)using device_schedule_callback() to purely obtain a process context to kick off ungroup operation which may block from a notifier callback. Rename ccwgroup_ungroup_callback() to ccwgroup_ungroup() and make it take ccwgroup_device * instead. The new function is now called directly from ccwgroup_ungroup_store(). ccwgroup_notifier() chain is updated to explicitly bounce through ccwgroup_device->ungroup_work. This also removes possible failure from memory pressure. Only compile-tested. Signed-off-by: Tejun Heo Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: linux390@de.ibm.com Cc: linux-s390@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

s390/ccwgroup: allow drivers to call set_{on,off}line

2012-11-23T10:14:35+00:00

Allow drivers to enable/disable ccwgroup devices. Acked-by: Peter Oberparleiter Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky

s390/ccwgroup: remove unused ccwgroup_device member

2012-06-05T11:23:37+00:00

The creator_id is no longer used. Just get rid of it. Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky

s390/ccwgroup: remove ccwgroup_create_from_string

2012-05-16T12:42:49+00:00

Remove the old ccwgroup_create_from_string interface since all drivers have been converted to ccwgroup_create_dev. Also remove now unused members of ccwgroup_driver. Reviewed-by: Cornelia Huck Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky

s390/ccwgroup: exploit ccwdev_by_dev_id

2012-05-16T12:42:46+00:00

Instead of finding devices via driver_find_device use the bus_find_device wrapper get_ccwdev_by_dev_id. This allows us to get rid of the ccw_driver argument of ccwgroup_create_dev and thus simplify the interface. Reviewed-by: Cornelia Huck Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky

s390/ccwgroup: introduce ccwgroup_create_dev

2012-05-16T12:42:46+00:00

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 Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky

[S390] ccwgroup_driver: remove duplicate members

2011-03-23T09:15:59+00:00

Remove the owner and name members of struct ccwgroup_driver and convert all drivers to store this data in the embedded struct device_driver. Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky

[S390] pm: ccwgroup bus power management callbacks

2009-06-16T08:31:08+00:00

Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky