ACPI: get_throttling_state() cannot be larger than state_count

Reported-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index d27838171f4a..5f099012f471 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -783,11 +783,9 @@ static int acpi_get_throttling_state(struct acpi_processor *pr,
                     (struct acpi_processor_tx_tss *)&(pr->throttling.
                                                       states_tss[i]);
                 if (tx->control == value)
-                        break;
+                        return i;
         }
-        if (i > pr->throttling.state_count)
-                i = -1;
-        return i;
+        return -1;
 }
 
 static int acpi_get_throttling_value(struct acpi_processor *pr,