compilation of the skeleton driver is currently broken. It doesn't compile.
So while I am it:
- fix typo
- add comments to answer common questions
- actually allow autosuspend in the driver struct
- increase paralellism by restricting code under locks
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch changes last use of hardcoded number of irq to
use platfrom_get_irq.
Signed-off-by: Milan Svoboda <msvoboda@ra.rockwell.com>
Acked-by: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Make the pxa2xx_udc driver fetch its IRQ from platform resources
rather than using compile-time constants, so that it works properly
on IXP4xx systems not just PXA21x/25x/26x.
Other updates:
- Do that using platform_get_irq()
- Switch to platform_driver_probe()
- Handle device_add() errors
- Remove "function" sysfs attribute and its potential errors
- Whitespace cleanups
Signed-off-by: Milan Svoboda <msvoboda@ra.rockwell.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
I write a patch adding support "SHARP EMONE(S01SH)" device for ipaq.c.
EMONE is a PDA with built-in HSDPA function.
From: Norihiko Tomiyama <norihiko.tomiyama@ctc-g.co.jp>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: (46 commits)
dev_dbg: check dev_dbg() arguments
drivers/base/attribute_container.c: use mutex instead of binary semaphore
mod_sysfs_setup() doesn't return errno when kobject_add_dir() failure occurs
s2ram: add arch irq disable/enable hooks
define platform wakeup hook, use in pci_enable_wake()
security: prevent permission checking of file removal via sysfs_remove_group()
device_schedule_callback() needs a module reference
s390: cio: Delay uevents for subchannels
sysfs: bin.c printk fix
Driver core: use mutex instead of semaphore in DMA pool handler
driver core: bus_add_driver should return an error if no bus
debugfs: Add debugfs_create_u64()
the overdue removal of the mount/umount uevents
kobject: Comment and warning fixes to kobject.c
Driver core: warn when userspace writes to the uevent file in a non-supported way
Driver core: make uevent-environment available in uevent-file
kobject core: remove rwsem from struct subsystem
qeth: Remove usage of subsys.rwsem
PHY: remove rwsem use from phy core
IEEE1394: remove rwsem use from ieee1394 core
...
Duplicate what Zach Brown did for pr_debug in commit
8b2a1fd1b3
[akpm@linux-foundation.org: fix a couple of things which broke]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This defines a platform hook to enable/disable a device as a wakeup event
source. It's initially for use with ACPI, but more generally it could be used
whenever enable_irq_wake()/disable_irq_wake() don't suffice.
The hook is called -- if available -- inside pci_enable_wake(); and the
semantics of that call are enhanced so that support for PCI PME# is no longer
needed. It can now work for devices with "legacy PCI PM", when platform
support allows it. (That support would use some board-specific signal for for
the same purpose as PME#.)
[akpm@linux-foundation.org: Make it compile with CONFIG_PM=n]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch (as896b) fixes an oversight in the design of
device_schedule_callback(). It is necessary to acquire a reference to the
module owning the callback routine, to prevent the module from being
unloaded before the callback can run.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Satyam Sharma <satyam.sharma@gmail.com>
Cc: Neil Brown <neilb@suse.de>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
We often have the situation that we register a subchannel and start device
recognition, only to find out that the device is not usable after all, which
triggers an unregister of the subchannel. This often happens on hundreds of
subchannels on a LPAR, leading to a storm of events which aren't of any use.
Therefore, use uevent_suppress to delay the KOBJ_ADD uevent for a subchannel
until we know that its ccw_device is to be registered.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Eric Rannaud <eric.rannaud@gmail.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
the DMA pool handler uses a semaphore as mutex. use the mutex API
instead of the (binary) semaphore
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
In the future we will allow the uevent type to be written to the uevent
file to trigger the different types of uevents. But for now, as we only
support the ADD event, warn if userspace tries to write anything else to
this file.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This allows sysfs to show the environment variables that are available
if the uevent happens. This lets userspace not have to cache all of
this information as the kernel already knows it.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
the current driver tree contains the removal of subsys.rwsem.
Unfortunately, this breaks qeth. However, it should be no problem to
fix the walking of the devices for /proc/qeth:
No need to take subsys.rwsem during walking the devices,
driver_find_devices() should already suffice.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The subsystem rwsem is not used by the driver core at all, so the use of
it in the phy code doesn't make any sense. They might possibly
want to use a local lock, but I am unsure about that.
Cc: netdev <netdev@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The subsystem rwsem is not used by the driver core at all, so the use of
it in the ieee1394 code doesn't make any sense. They might possibly
want to use a local lock, but as most of these operations are already
protected by a local lock, it really doesn't look like it would be
needed.
Cc: Ben Collins <bcollins@debian.org>
Cc: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: linux1394-devel <linux1394-devel@lists.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The subsystem rwsem is not used by the driver core at all, so the use of
it in the ide-proc code of it doesn't make any sense. Perhaps a local
lock might be needed, but I do not really think so.
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: linux ide <linux-ide@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The subsystem rwsem is not used by the driver core at all, so there is
no point in trying to access it.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The subsystem rwsem is not used by the driver core at all, so there is
no point in trying to access it.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The rwsem is not used to protect anything, so the use of it by the PNP
subsystem isn't really useful, and it's doubtful if it really did anything or
not. So I've removed it.
Cc: Adam Belay <ambx1@neo.rr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
SCSI was using the incorrect lock to protect walking the list of all
devices in the class. This patch fixes this.
Cc: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This lock is never used by the rest of the driver core, so the fact that
we are grabbing it here means it isn't correct...
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Driver core: add suspend() and resume() to struct device_type
In cases when there are devices of different types in the same class
we can't use class's implementation of suspend and resume methods and
we need to add them to struct device_type instead.
Also fix error handling in resume code (we should not try to call
class's resume method iof bus's resume method for the device failed.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Oliver Neukum
Milan Svoboda
David Brownell
Norihiko Tomiyama
Linus Torvalds
Dan Williams
Matthias Kaehlcke
Alan Stern
Cornelia Huck
Greg Kroah-Hartman
Kay Sievers
Dmitry Torokhov