From: Venki Pallipadi <[EMAIL PROTECTED]>

This was writeable in 2.6.23 but the cpuidle merge made it read-only.  But
some people's scripts (ie: Mark's) were writing to it.

As an unhappy compromise, make max_cstate writeable again if the kernel was
configured without CONFIG_CPU_IDLE.

http://bugzilla.kernel.org/show_bug.cgi?id=9683

Signed-off-by: Venkatesh Pallipadi <[EMAIL PROTECTED]>
Cc: Mark Lord <[EMAIL PROTECTED]>
Cc: Arjan van de Ven <[EMAIL PROTECTED]>
Cc: Ingo Molnar <[EMAIL PROTECTED]>
Cc: "Rafael J. Wysocki" <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Len Brown <[EMAIL PROTECTED]>
---
 drivers/acpi/processor_idle.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 2fe34cc..2235f4e 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -76,7 +76,11 @@ static void (*pm_idle_save) (void) __read_mostly;
 #define PM_TIMER_TICKS_TO_US(p)                (((p) * 
1000)/(PM_TIMER_FREQUENCY/1000))
 
 static unsigned int max_cstate __read_mostly = ACPI_PROCESSOR_MAX_POWER;
+#ifdef CONFIG_CPU_IDLE
 module_param(max_cstate, uint, 0000);
+#else
+module_param(max_cstate, uint, 0644);
+#endif
 static unsigned int nocst __read_mostly;
 module_param(nocst, uint, 0000);
 
-- 
1.5.4.rc2.84.gf85fd

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