linux.git/drivers/leds/led-class.c, branch v2.6.28

leds: Fix trigger registration race

2008-10-20T22:21:08+00:00

Fix a race during trigger registration where we could try and use a lock
before it was initialised.

Signed-off-by: Richard Purdie

leds: Fix leds-class.c comment

2008-10-20T22:04:36+00:00

led_classdev_unregister() has no "__" prefix, remove it.

Signed-off-by: Qinghuang Feng 
Signed-off-by: Richard Purdie

leds: Remove uneeded strlen calls

2008-10-20T21:37:04+00:00

There's no need for the additional call to strlen(), we can directly
return the value returned by sprintf().  We now return a length value
that doesn't include the final '\0', but user space shouldn't bother
about it anyway.

Signed-off-by: Sven Wegener 
Signed-off-by: Andrew Morton 
Signed-off-by: Richard Purdie

device create: misc: convert device_create_drvdata to device_create

2008-10-16T16:24:43+00:00

Now that device_create() has been audited, rename things back to the
original call to be sane.

Signed-off-by: Greg Kroah-Hartman

LEDS: fix race in device_create

2008-05-20T20:31:55+00:00

There is a race from when a device is created with device_create() and
then the drvdata is set with a call to dev_set_drvdata() in which a
sysfs file could be open, yet the drvdata will be NULL, causing all
sorts of bad things to happen.

This patch fixes the problem by using the new function,
device_create_drvdata().

Cc: Kay Sievers 
Cc: Richard Purdie 
Signed-off-by: Greg Kroah-Hartman

Remove duplicated unlikely() in IS_ERR()

2008-04-29T15:06:25+00:00

Some drivers have duplicated unlikely() macros.  IS_ERR() already has
unlikely() in itself.

This patch cleans up such pointless code.

Signed-off-by: Hirofumi Nakagawa 
Acked-by: David S. Miller 
Acked-by: Jeff Garzik 
Cc: Paul Clements 
Cc: Richard Purdie 
Cc: Alessandro Zummo 
Cc: David Brownell 
Cc: James Bottomley 
Cc: Michael Halcrow 
Cc: Anton Altaparmakov 
Cc: Al Viro 
Cc: Carsten Otte 
Cc: Patrick McHardy 
Cc: Paul Mundt 
Cc: Jaroslav Kysela 
Cc: Takashi Iwai 
Acked-by: Mike Frysinger 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

leds: Add support to leds with readable status

2008-04-24T22:37:42+00:00

Some led hardware allows drivers to query the led state, and this patch
adds a hook to let the led class take advantage of that information when
available.

Without this functionality, when access to the led hardware is not
exclusive (i.e. firmware or hardware might change its state behind the
kernel's back), reality goes out of sync with the led class' idea of what
the led is doing, which is annoying at best.

Behaviour for drivers that do not or cannot read the led status is
unchanged.

Signed-off-by: Henrique de Moraes Holschuh 
Signed-off-by: Richard Purdie

leds: disable triggers on brightness set

2008-04-24T22:34:18+00:00

Disable any active triggers when the brightness attribute is
set to zero.

Signed-off-by: Henrique de Moraes Holschuh 
Signed-off-by: Márton Németh 
Signed-off-by: Richard Purdie

PM: Remove destroy_suspended_device()

2008-04-20T02:10:28+00:00

After 2.6.24 there was a plan to make the PM core acquire all device
semaphores during a suspend/hibernation to protect itself from
concurrent operations involving device objects.  That proved to be
too heavy-handed and we found a better way to achieve the goal, but
before it happened, we had introduced the functions
device_pm_schedule_removal() and destroy_suspended_device() to allow
drivers to "safely" destroy a suspended device and we had adapted some
drivers to use them.  Now that these functions are no longer necessary,
it seems reasonable to remove them and modify their users to use the
normal device unregistration instead.

Signed-off-by: Rafael J. Wysocki 
Acked-by: Pavel Machek 
Signed-off-by: Greg Kroah-Hartman

leds: add possibility to remove leds classdevs during suspend/resume

2008-02-05T17:44:23+00:00

Make it possible to unregister a led classdev object in a safe way during a
suspend/resume cycle.

Signed-off-by: Rafael J. Wysocki 
Cc: Michael Buesch 
Cc: Pavel Machek 
Cc: "John W. Linville" 
Cc: Alan Stern 
Cc: Len Brown 
Cc: Greg KH 
Cc: Kay Sievers 
Cc: Richard Purdie 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds