From david-b@pacbell.net Wed Aug 30 14:19:47 2006 From: David Brownell To: Greg KH Subject: PM: schedule /sys/devices/.../power/state for removal Date: Wed, 30 Aug 2006 13:50:27 -0700 Cc: Pavel Machek Content-Disposition: inline Message-Id: <200608301350.28138.david-b@pacbell.net> From: Pavel Machek This lists the /sys/devices/.../power/state file, and its internal support, as due for removal next year. Signed-off-by: Pavel Machek Signed-off-by: David Brownell Signed-off-by: Greg Kroah-Hartman --- Documentation/feature-removal-schedule.txt | 15 +++++++++++++++ 1 file changed, 15 insertions(+) --- gregkh-2.6.orig/Documentation/feature-removal-schedule.txt +++ gregkh-2.6/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 + +--------------------------- + What: RAW driver (CONFIG_RAW_DRIVER) When: December 2005 Why: declared obsolete since kernel 2.6.3