linux-toradex.git/drivers/base/core.c, branch v2.6.23.12

create /sys/.../power when CONFIG_PM is set

2007-12-14T17:51:02+00:00

patch dec13c15445fec29ca9087890895718450e80b95 in mainline.

The CONFIG_SUSPEND changes in 2.6.23 caused a regression under certain
configuration conditions (SUSPEND=n, USB_AUTOSUSPEND=y) where all USB
device attributes in sysfs (idVendor, idProduct, ...) silently disappeared,
causing udev breakage and more.

The cause of this is that the /sys/.../power subdirectory is now only
created when CONFIG_PM_SLEEP is set, however, it should be created whenever
CONFIG_PM is set to handle the above situation.  The following patch fixes
the regression.

Signed-off-by: Daniel Drake 
Acked-by: Rafael J. Wysocki 
Cc: Alan Stern 
Cc: Kay Sievers 
Cc: stable 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

Driver core: fix SYSF_DEPRECATED breakage for nested classdevs

2007-10-07T23:42:22+00:00

We should only reparent to a class former class devices that
form the base of class hierarchy. Nested devices should still
grow from their real parents.

Signed-off-by: Dmitry Torokhov 
Tested-by: Andrey Borzenkov 
Tested-by: Anssi Hannula 
Signed-off-by: Linus Torvalds

Add explicit zeroing to "envp" array in device 'show' method

2007-09-26T16:16:21+00:00

As Stephen Hemminger says, this is a "belt and suspenders" patch that
zeroes the envp array at allocation time, even though all the users
should NULL-terminate it anyway (and we've hopefully fixed everybody
that doesn't do that).

And we'll apparently clean the whole envp thing up for 2.6.24 anyway.

But let's just be robust, and do both this *and* make sure that all
users are doing the right thing.

Acked-by: Stephen Hemminger 
Acked-by: Greg Kroah-Hartman 
Signed-off-by: Linus Torvalds

Driver core: fix deprectated sysfs structure for nested class devices

2007-09-19T18:24:18+00:00

Nested class devices used to have 'device' symlink point to a real
(physical) device instead of a parent class device.  When converting
subsystems to struct device we need to keep doing what class devices did if
CONFIG_SYSFS_DEPRECATED is Y, otherwise parts of udev break.

Signed-off-by: Dmitry Torokhov 
Cc: Kay Sievers 
Acked-by: Greg KH 
Tested-by: Anssi Hannula 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

driver core: revert "device" link creation check

2007-07-30T21:25:12+00:00

driver core: revert "device" link creation check

Commit 2ee97caf0a6602f749ddbfdb1449e383e1212707 introduced an extra
check on when to create the "device" symlink. Unfortunately, this
breaks input, so let's revert to the old behaviour.

Signed-off-by: Cornelia Huck 
Acked-by: Kay Sievers 
Signed-off-by: Greg Kroah-Hartman

kobject: put kobject_actions in kobject.h

2007-07-30T21:25:12+00:00

This prevents the extern declaration in the driver core.

Cc: Kay Sievers 
Cc: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

Driver core: check return code of sysfs_create_link()

2007-07-18T22:49:50+00:00

Check for return value of sysfs_create_link() in device_add() and
device_rename().  Add helper functions device_add_class_symlinks() and
device_remove_class_symlinks() to make the code easier to read.

[akpm@linux-foundation.org: fix unused var warnings]

Signed-off-by: Cornelia Huck 
Acked-by: Jeff Garzik 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

Driver core: accept all valid action-strings in uevent-trigger

2007-07-18T22:49:49+00:00

This allows the uevent file to handle any type of uevent action to be
triggered by userspace instead of just the "add" uevent.


Signed-off-by: Kay Sievers 
Signed-off-by: Greg Kroah-Hartman

driver-core: make devt_attr and uevent_attr static

2007-07-11T23:09:06+00:00

devt_attr and uevent_attr are either allocated dynamically with or
embedded in device and class_device as they needed their owner field
set to the module implementing the driver.  Now that sysfs implements
immediate disconnect and owner field removed from struct attribute,
there is no reason to do this.  Remove these attributes from
[class_]device and use static attribute structures instead.

Signed-off-by: Tejun Heo 
Signed-off-by: Greg Kroah-Hartman

sysfs: kill unnecessary attribute->owner

2007-07-11T23:09:06+00:00

sysfs is now completely out of driver/module lifetime game.  After
deletion, a sysfs node doesn't access anything outside sysfs proper,
so there's no reason to hold onto the attribute owners.  Note that
often the wrong modules were accounted for as owners leading to
accessing removed modules.

This patch kills now unnecessary attribute->owner.  Note that with
this change, userland holding a sysfs node does not prevent the
backing module from being unloaded.

For more info regarding lifetime rule cleanup, please read the
following message.

  http://article.gmane.org/gmane.linux.kernel/510293

(tweaked by Greg to not delete the field just yet, to make it easier to
merge things properly.)

Signed-off-by: Tejun Heo 
Cc: Cornelia Huck 
Cc: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman