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ACPI: prevent processor.max_cstate=0 boot crash
[pandora-kernel.git]
/
drivers
/
acpi
/
processor_idle.c
diff --git
a/drivers/acpi/processor_idle.c
b/drivers/acpi/processor_idle.c
index
6fe1214
..
436127e
100644
(file)
--- a/
drivers/acpi/processor_idle.c
+++ b/
drivers/acpi/processor_idle.c
@@
-1037,6
+1037,9
@@
static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
dev->states[i].desc[0] = '\0';
}
+ if (max_cstate == 0)
+ max_cstate = 1;
+
for (i = 1; i < ACPI_PROCESSOR_MAX_POWER && i <= max_cstate; i++) {
cx = &pr->power.states[i];
state = &dev->states[count];