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>
diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig
index 5b54892..2c876ed 100644
--- a/arch/x86/xen/Kconfig
+++ b/arch/x86/xen/Kconfig
@@ -38,7 +38,7 @@
config XEN_SAVE_RESTORE
bool
- depends on XEN && PM
+ depends on XEN
default y
config XEN_DEBUG_FS
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
index 2657299..d739cf6 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 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 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 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 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