[PATCH 21/47] PM: schedule /sys/devices/.../power/state for removal

From: Greg KH
Date: Tue Sep 26 2006 - 01:52:56 EST

From: Pavel Machek <pavel@xxxxxxx>

This lists the /sys/devices/.../power/state file, and its internal support,
as due for removal next year.

Signed-off-by: Pavel Machek <pavel@xxxxxxx>
Signed-off-by: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
Documentation/feature-removal-schedule.txt | 15 +++++++++++++++
1 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index a89a1b7..611acc3 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -6,6 +6,21 @@ be removed from this file.


+What: /sys/devices/.../power/state
+ dev->power.power_state
+ dpm_runtime_{suspend,resume)()
+When: July 2007
+Why: Broken design for runtime control over driver power states, confusing
+ driver-internal runtime power management with: mechanisms to support
+ system-wide sleep state transitions; event codes that distinguish
+ different phases of swsusp "sleep" transitions; and userspace policy
+ inputs. This framework was never widely used, and most attempts to
+ use it were broken. Drivers should instead be exposing domain-specific
+ interfaces either to kernel or to userspace.
+Who: Pavel Machek <pavel@xxxxxxx>
When: December 2005
Why: declared obsolete since kernel 2.6.3

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