1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index f170d746336d..c72e64893d03 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -676,6 +676,15 @@ static int acpi_processor_get_throttling_fadt(struct acpi_processor *pr)
         if (!pr->flags.throttling)
                 return -ENODEV;
 
+        /*
+         * We don't care about error returns - we just try to mark
+         * these reserved so that nobody else is confused into thinking
+         * that this region might be unused..
+         *
+         * (In particular, allocating the IO range for Cardbus)
+         */
+        request_region(pr->throttling.address, 6, "ACPI CPU throttle");
+
         pr->throttling.state = 0;
 
         duty_mask = pr->throttling.state_count - 1;