linux.git/drivers/usb/core/usb.c, branch v2.6.28

USB: Add new PM callback methods for USB

2008-08-21T17:26:37+00:00

This patch (as1129) adds support for the new PM callbacks to usbcore.
The new callbacks merely invoke the same old USB power management
routines as the old ones did.

A minor improvement is that the callbacks are present only in the
"USB-device" device_type structure, rather than in the bus_type
structure.  This way they will be invoked only for USB devices, not
for USB interfaces.  The core USB PM routines automatically handle
suspending and resuming interfaces along with their devices.

Signed-off-by: Alan Stern 
Signed-off-by: Greg Kroah-Hartman

USB: usb dev_set_name() instead of dev->bus_id

2008-07-21T22:15:47+00:00

The bus_id field is going away, use the dev_set_name() function
to set it properly.

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

USB: usb dev_name() instead of dev->bus_id

2008-07-21T22:15:46+00:00

The bus_id field is going away, use the dev_name() function instead.

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

USB: create attributes before sending uevent

2008-05-14T17:00:26+00:00

This patch (as1087d) fixes a long-standing problem in usbcore: Device,
interface, and endpoint attributes aren't added until _after_ the
creation uevent has already been broadcast.

Unfortunately there are a few attributes which cannot be created that
early.  The "descriptors" attribute is binary and so must be created
separately.  The power-management attributes can't be created until
the dev/power/ group exists.  And the interface string can vary from
one altsetting to another, so it has to be created dynamically.

Signed-off-by: Alan Stern 
Cc: Kay Sievers 
Signed-off-by: Greg Kroah-Hartman

PM: Do not acquire device semaphores upfront during suspend

2008-03-04T22:47:05+00:00

Remove the code that acquires all device semaphores from the suspend
code path as it causes multiple problems to appear (most notably,
http://bugzilla.kernel.org/show_bug.cgi?id=10030) and revert the
change introduced by commit 4145ed6dc597a9bea5f6ae8c574653b2de10620f
depending on the code being removed.

Remove pm_sleep_lock()/pm_sleep_unlock() from device_add() to avoid
the issue reported at http://bugzilla.kernel.org/show_bug.cgi?id=9874.

It should fix the regreesions reported at:
	http://bugzilla.kernel.org/show_bug.cgi?id=9874
	http://bugzilla.kernel.org/show_bug.cgi?id=10030

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

docbook: fix usb source files

2008-03-03T18:47:14+00:00

Fix docbook problems in USB source files.
These cause the generated docbook to be incorrect.

Signed-off-by: Randy Dunlap 
Signed-off-by: Linus Torvalds

USB: fix codingstyle issues in drivers/usb/core/*.c

2008-02-01T22:35:08+00:00

Fixes a number of coding style issues in the remaining .c files in
drivers/usb/core/

Signed-off-by: Greg Kroah-Hartman

USB: mark USB drivers as being GPL only

2008-02-01T22:35:07+00:00

Over two years ago, the Linux USB developers stated that they believed
there was no way to create a USB kernel driver that was not under the
GPL.  This patch moves the USB apis to enforce that decision.

There are no known closed source USB drivers in the wild, so this patch
should cause no problems.

Signed-off-by: Greg Kroah-Hartman

USB: Export suspend statistics

2008-02-01T22:35:00+00:00

This patch exports two statistics to userspace:
/sys/bus/usb/device/.../power/connected_duration
/sys/bus/usb/device/.../power/active_duration

connected_duration is the total time (in msec) that the device has
been connected.  active_duration is the total time the device has not
been suspended.  With these two statistics, tools like PowerTOP can
calculate the percentage time that a device is active, i.e. not
suspended or auto-suspended.

Users can also use the active_duration to check if a device is actually
autosuspended.  Currently, they can set power/level to auto and
power/autosuspend to a positive timeout, but there's no way to know from
userspace if a device was actually autosuspended without looking at the
dmesg output.  These statistics will be useful in creating an automated
userspace script to test autosuspend for USB devices.

Signed-off-by: Sarah Sharp 
Signed-off-by: Greg Kroah-Hartman

USB: make ksuspend_usbd thread non-freezable

2008-02-01T22:34:51+00:00

This patch (as1012b) makes the ksuspend_usbd kernel thread
non-freezable.  Since the PM core has been changed to lock all devices
during a system sleep, the thread no longer needs to be frozen.  It
won't interfere with a system sleep because before trying to resume a
root hub device, it acquires the device's lock.

Signed-off-by: Alan Stern 
Signed-off-by: Greg Kroah-Hartman