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ACPI: thinkpad-acpi: do not arm fan watchdog if it would not work

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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 <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Henrique de Moraes Holschuh 2007-04-27 22:00:10 -03:00 committed by Len Brown
parent ecf2a80a97
commit 4985cd0a63
1 changed files with 3 additions and 0 deletions
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3
drivers/misc/thinkpad_acpi.c
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@ -3197,6 +3197,9 @@ static void fan_watchdog_reset(void)
{ {
static int fan_watchdog_active = 0; static int fan_watchdog_active = 0;
if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
return;
if (fan_watchdog_active) if (fan_watchdog_active)
cancel_delayed_work(&fan_watchdog_task); cancel_delayed_work(&fan_watchdog_task);