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Recent driver core change causes references to parent devices being
dropped early, at device_del() time, as opposed to when all children
are freed. This causes oops in evdev with grabbed devices. Take the
reference to the parent input device ourselves to ensure that it
stays around long enough.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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get rid of input BIT* duplicate defines
use newly global defined macros for input layer. Also remove includes of
input.h from non-input sources only for BIT macro definiton. Define the
macro temporarily in local manner, all those local definitons will be
removed further in this patchset (to not break bisecting).
BIT macro will be globally defined (1<<x)
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: <dtor@mail.ru>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Cc: <lenb@kernel.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Cc: <perex@suse.cz>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: <vernux@us.ibm.com>
Cc: <malattia@linux.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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RT guys alerted me to the fact that in their tree spinlocks
are preemptible and it is better to use full RCU API
(rcu_read_lock()/rcu_read_unlock()) to be safe.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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If input_open_device() fails we should not leave interfaces marked
as opened.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: reduce raciness when input handlers disconnect
Input: ucb1x00 - do not access input_dev->private directly
Input: logips2pp - fix typo in Kconfig
Input: db9 - do not ignore dev2 module parameter
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There is a race between input handler's release() and disconnect()
methods: when input handler disconnects it wakes up all regular
users and then process to walk user list to wake up async. users.
While disconnect() walks the list release() removes elements of
the same list causing oopses.
While this is not a substibute for proper locking we can reduce
odds of getting an oops if we wake up normal readers after walking
the list.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Remove includes of <linux/smp_lock.h> where it is not used/needed.
Suggested by Al Viro.
Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc,
sparc64, and arm (all 59 defconfigs).
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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master.kernel.org:/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/dtor/input: (65 commits)
Input: gpio_keys - add support for switches (EV_SW)
Input: cobalt_btns - convert to use polldev library
Input: add skeleton for simple polled devices
Input: update some documentation
Input: wistron - fix typo in keymap for Acer TM610
Input: add input_set_capability() helper
Input: i8042 - add Fujitsu touchscreen/touchpad PNP IDs
Input: i8042 - add Panasonic CF-29 to nomux list
Input: lifebook - split into 2 devices
Input: lifebook - add signature of Panasonic CF-29
Input: lifebook - activate 6-byte protocol on select models
Input: lifebook - work properly on Panasonic CF-18
Input: cobalt buttons - separate device and driver registration
Input: ati_remote - make button repeat sensitivity configurable
Input: pxa27x - do not use deprecated SA_INTERRUPT flag
Input: ucb1400 - make delays configurable
Input: misc devices - switch to using input_dev->dev.parent
Input: joysticks - switch to using input_dev->dev.parent
Input: touchscreens - switch to using input_dev->dev.parent
Input: mice - switch to using input_dev->dev.parent
...
Fixed up conflicts with core device model removal of "struct subsystem" manually.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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We need to work on cleaning up the relationship between kobjects, ksets and
ktypes. The removal of 'struct subsystem' is the first step of this,
especially as it is not really needed at all.
Thanks to Kay for fixing the bugs in this patch.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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The naming convention in input handlers was very confusing -
client stuctures were called lists, regular lists were also
called lists making anyone looking at the code go mad.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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- consolidate code for binding handlers to a device
- return error codes from handlers connect() methods back to input
core and log failures
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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This creates symlinks in /sys/class/input/ to the nested class devices
to help userspace cope with the nesting.
Unfortunatly udev still needs to be updated as it can't handle symlinks
properly here :(
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Input: remove references to devfs from input subsystem
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The previous patch adding the ability to nest struct class_device
changed the paramaters to the call class_device_create(). This patch
fixes up all in-kernel users of the function.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Replace the MSECS() macro with the jiffies_to_msecs() function provided
in jiffies.h
Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Some manual fixups required due to clashes with the PF_FREEZE cleanups.
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Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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I've tested it with a Logitech WingMan Rumblepad on an x86-64
machine, and on an ia32 machine to make sure I didn't break
anything.
Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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mapped twice, resulting in it being the last (instead
of first) button on a joystick.
Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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EVIOCSKEYCODE macros to be <= KEY_MAX. Check off-by one mistakes
in keycodemax usage. There was a lot of potential for overwriting
memory. Also enlarge NR_KEYS to 256 while we're at it.
Found-by: Georgi Guninski <guninski@guninski.com>
Initial-patch-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
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to notify a client using poll() that the device is gone.
Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
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Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
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entry when hardware driver disconnects instead of waiting for
the last user to drop off. This way hardware drivers can be
unloaded at any time.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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(we want readers to wake up when underlying device is gone
so they would get -ENODEV and close the device).
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Trivial annotations in drivers/input
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This patch adds sysfs support for all input devices. It also provides
the "device" and "driver" symlink for all Input devices that specify it.
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Input: Introduce an optional blacklist field in input_handler structure.
When loading a new device or a new handler try to match device
against handler's black list before doing match on required
attributes.
This allows to get rid of "surprises" in connect functions, IMO
connect should only fail when it physically can not connect, not
because it decides it does not like device.
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new helper - iminor(inode); defined as minor(inode->i_rdev); lots and
lots of places in drivers had been switched to it.
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From: Christoph Hellwig <hch@lst.de>
Some people may already have noticed that I've been revamping the devfs API
recently. The worst offender still left is devfs_register, it's prototype
is:
devfs_handle_t devfs_register(devfs_handle_t dir,
const char *name, unsigned int flags,
unsigned int major, unsigned int minor,
umode_t mode, void *ops, void *info)
Of these:
- dir and flags are always zero
- the return value is never used
- info is only used in one driver which doesn't even need it for
operation
- umode_t always describes a character device
- name very often comes from a stack buffer we sprintf'ed into
so obviously we really want a much simpler API instead. My first draft for
this was:
int devfs_mk_cdev(dev_t dev, umode_t mode,
struct file_operations *fops, void *info,
const char *fmt, ...)
this removes the unused argumens, switches to a proper dev_t for the device
number and allows to directly use a printf-like expression as name, getting
rid of the temporary buffers.
Now Al has reappeared and put the first steps of his CIDR for charater device
on public ftp and we'll soon have a similar lookup object + fops mechanism in
generic code as we already habe for blockdevices, i.e. the devfs code to
assign fops from an entry will become superflous as generic code already does
it. That means the fops and info arguments are obsolete before they were
introduced, so I'd like to propose the following API instead:
int devfs_mk_cdev(dev_t dev, umode_t mode, const char *fmt, ...)
which is much nicer anyway. The educated reader will notice that this is
exactly the same prototype devfs_mk_bdev has so I'll probably get suggestions
to merge those two into some kind of devfs_mk_node soon. Personally I don't
like that as character and blockdevices are two really separate entinities
and I'll like to keep them as separate as possible.
Example patch that introduces the API and converts drivers/input attached.
Every driver which calls devfs_mk_cdev (about 50) needs conversion. Note
that the transition can happen in pieces - devfs_register continues to work
after this patch, it's just the plan to get rid of it in the end.
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Now that devfs_handle_t is gone from all structs there is no
reason to include it in headers.
Fix the fallout by including previously implicit headers and fixing
the drivers that didn't include devfs_fs_kernel.h explicitly.
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Make sure input always uses devfs_remove. While at it I've also
remove lots of code duplication - every upper input driver contained
the code surrounding devfs_unregister in two identical copies.
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- relax requirements on devices, joydev now allows joysticks
without buttons to work with throttles and pedals, mousedev
allows a separate mouse wheel
- remove a stray semicolon in joydev
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in the input drivers.
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them with the input device class when started up.
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Fix cli() breakage in input (gameport) drivers.
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