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    Subject[PATCH] acpi: fan after suspend-to-mem fix

    acpi_fan_suspend should probably set state to ACPI_D3, rather than ACPI_D0.
    With this change the fan works after S3 suspend atleast on HP nw8000 laptop,
    for which the suspended fan has been broken since sword-and-stone.

    Signed-off-by: Tommi Kyntola <>
    Why this was ACPI_D0 beats me, but it's been that way since
    the _suspend/_resume functios got added in the commit
    0feabb01d93e5801d1127416a66cfc3963280bca (2.6.18-rc1, I think).

    The fan hasn't worked on my HP nw8000 laptop after an S3 suspend
    ever, but fixing that to ACPI_D3 there finally makes it work as

    If there was some hidden reason why that was set to ACPI_D0,
    then perhaps a config option for some ICH4 or HP laptops
    is called for.


    diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
    index 045c894..7ae70b0 100644
    --- a/drivers/acpi/fan.c
    +++ b/drivers/acpi/fan.c
    @@ -243,7 +243,7 @@ static int acpi_fan_suspend(struct acpi_device *device, int state)
    if (!device)
    return -EINVAL;

    - acpi_bus_set_power(device->handle, ACPI_STATE_D0);
    + acpi_bus_set_power(device->handle, ACPI_STATE_D3);

    return AE_OK;
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      Last update: 2007-02-28 13:59    [W:0.020 / U:1.120 seconds]
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