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authorAnton Vorontsov <avorontsov@ru.mvista.com>2009-10-05 07:44:27 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-10-30 17:20:52 +1100
commit64eb38a6e9732f45d518b9e522d613195c930e8f (patch)
treeb33676121d0d4b94a7799c8a6226eff41e871464 /arch/powerpc/Kconfig
parent7424639af480a05cac428ec7e7e38a11d6ff5734 (diff)
powerpc: Make it possible to select hibernation on all PowerPCs
Just as with kexec, hibernation may fail even on well-tested platforms: some PCI device, a driver of which doesn't play well with hibernation, is enough to break resuming. Hibernation code is not much platform dependent, and hiding features only because these were not verified on a particular hardware is counterproductive: we just prevent the features from being widely tested. For example, with this patch I just tested hibernation on a MPC83xx board, and it works quite well, modulo a few drivers that need some fixing. So, let's make it possible to select hibernation support for all PowerPCs, then let's wait for any possible bug reports, and actually fix (or just collect ;-) the bugs instead of hiding them. If some platforms really can't stand hibernation, we can make a blacklist, with proper comments why exactly hibernation doesn't work, whether it is possible to fix, and what needs to be done to fix it. CONFIG_HIBERNATION is still =n by default, so the commit doesn't change anything apart from ability to set it to =y. I'm not sure if EXPERIMENTAL dependency is needed, I'd rather not add it for a few reasons: 1) It doesn't matter much, for distro kernels user has no clue that some feature is experimental. Majority of defconfigs enable EXPERIMENTAL anyway (90 vs. 4, which, btw, means that EXPERIMENTAL is overused in Kconfigs); 2) EXPERIMENTAL is a good thing for features that change default behaviour of a kernel, while for hibernation user has to explicitly issue 'echo disk > /sys/power/state' to trigger any hibernation bugs; 3) Per init/Kconfig, EXPERIMENTAL is a good thing to scare and discourage users from 'widespread use of a feature', while we want to encourage that use. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/Kconfig')
-rw-r--r--arch/powerpc/Kconfig11
1 files changed, 0 insertions, 11 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 2ba14e77296..c01580d86fd 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -199,19 +199,8 @@ config DEFAULT_UIMAGE
config REDBOOT
bool
-config HIBERNATE_32
- bool
- depends on (PPC_PMAC && !SMP) || BROKEN
- default y
-
-config HIBERNATE_64
- bool
- depends on BROKEN || (PPC_PMAC64 && EXPERIMENTAL)
- default y
-
config ARCH_HIBERNATION_POSSIBLE
bool
- depends on (PPC64 && HIBERNATE_64) || (PPC32 && HIBERNATE_32)
default y
config ARCH_SUSPEND_POSSIBLE