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authorRafael J. Wysocki <rjw@sisk.pl>2011-02-11 00:06:30 +0100
committerRafael J. Wysocki <rjw@sisk.pl>2011-03-15 00:43:15 +0100
commit1eb208aea3179dd2fc0cdeea45ef869d75b4fe70 (patch)
treeaa90c2ef7ca7e425b98123e6f9a9a821c6b0201f /kernel
parentcd51e61cf4e8b220da37dc35e9c2dc2dc258b4de (diff)
PM: Make CONFIG_PM depend on (CONFIG_PM_SLEEP || CONFIG_PM_RUNTIME)
From the users' point of view CONFIG_PM is really only used for making it possible to set CONFIG_SUSPEND, CONFIG_HIBERNATION, CONFIG_PM_RUNTIME and (surprisingly enough) CONFIG_XEN_SAVE_RESTORE (CONFIG_PM_OPP also depends on CONFIG_PM, but quite artificially). However, both CONFIG_SUSPEND and CONFIG_HIBERNATION require platform support (independent of CONFIG_PM) and it is not quite obvious that CONFIG_PM has to be set for CONFIG_XEN_SAVE_RESTORE to be available. Thus, from the users' point of view, it would be more logical to automatically select CONFIG_PM if any of the above options depending on it are set. Make CONFIG_PM depend on (CONFIG_PM_SLEEP || CONFIG_PM_RUNTIME), which will cause it to be selected when any of CONFIG_SUSPEND, CONFIG_HIBERNATION, CONFIG_PM_RUNTIME, CONFIG_XEN_SAVE_RESTORE is set and will clarify its meaning. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/power/Kconfig29
1 files changed, 6 insertions, 23 deletions
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
index 265729966ece..d739cf612e50 100644
--- a/kernel/power/Kconfig
+++ b/kernel/power/Kconfig
@@ -1,23 +1,7 @@
config PM
- bool "Power Management support"
- depends on !IA64_HP_SIM
- ---help---
- "Power Management" means that parts of your computer are shut
- off or put into a power conserving "sleep" mode if they are not
- being used. There are two competing standards for doing this: APM
- and ACPI. If you want to use either one, say Y here and then also
- to the requisite support below.
-
- Power Management is most important for battery powered laptop
- computers; if you have a laptop, check out the Linux Laptop home
- page on the WWW at <http://www.linux-on-laptops.com/> or
- Tuxmobil - Linux on Mobile Computers at <http://www.tuxmobil.org/>
- and the Battery Powered Linux mini-HOWTO, available from
- <http://www.tldp.org/docs.html#howto>.
-
- Note that, even if you say N here, Linux on the x86 architecture
- will issue the hlt instruction if nothing is to be done, thereby
- sending the processor to sleep and saving power.
+ bool
+ depends on PM_SLEEP || PM_RUNTIME
+ default y
config PM_DEBUG
bool "Power Management Debug Support"
@@ -102,7 +86,7 @@ config PM_SLEEP_ADVANCED_DEBUG
config SUSPEND
bool "Suspend to RAM and standby"
- depends on PM && ARCH_SUSPEND_POSSIBLE
+ depends on ARCH_SUSPEND_POSSIBLE
default y
---help---
Allow the system to enter sleep states in which main memory is
@@ -133,7 +117,7 @@ config SUSPEND_FREEZER
config HIBERNATION
bool "Hibernation (aka 'suspend to disk')"
- depends on PM && SWAP && ARCH_HIBERNATION_POSSIBLE
+ depends on SWAP && ARCH_HIBERNATION_POSSIBLE
select LZO_COMPRESS
select LZO_DECOMPRESS
---help---
@@ -224,7 +208,7 @@ config APM_EMULATION
config PM_RUNTIME
bool "Run-time PM core functionality"
- depends on PM
+ depends on !IA64_HP_SIM
---help---
Enable functionality allowing I/O devices to be put into energy-saving
(low power) states at run time (or autosuspended) after a specified
@@ -246,7 +230,6 @@ config ARCH_HAS_OPP
config PM_OPP
bool "Operating Performance Point (OPP) Layer library"
- depends on PM
depends on ARCH_HAS_OPP
---help---
SOCs have a standard set of tuples consisting of frequency and