[ibm-acpi-devel] [PATCH 2/9] ACPI: thinkpad-acpi: do not arm fan watchdog if it would not work

[Henrique de M. H. <hm...@hm...>]

Do not enable/rearm the fan control safety watchdog if we would not be able
to do anything to the fan anyway.

Signed-off-by: Henrique de Moraes Holschuh <hm...@hm...>
---
 drivers/misc/thinkpad_acpi.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
index 7dc3a22..f824259 100644
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -3197,6 +3197,9 @@ static void fan_watchdog_reset(void)
 {
 	static int fan_watchdog_active = 0;
 
+	if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
+		return;
+
 	if (fan_watchdog_active)
 		cancel_delayed_work(&fan_watchdog_task);
 
-- 
1.5.1