Commit 1eb208ae authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

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: default avatarRafael J. Wysocki <rjw@sisk.pl>
parent cd51e61c

arch/x86/xen/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -38,7 +38,7 @@ config XEN_MAX_DOMAIN_MEMORY 


config XEN_SAVE_RESTORE

       bool

       depends on XEN && PM

       depends on XEN

       default y



config XEN_DEBUG_FS

kernel/power/Kconfig

+6 −23
Original line number Diff line number Diff line 
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

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