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    SubjectRe: [PATCH -v2] ACPI, PM, Specify lowest allowed state for device sleep state
    On 05/17/2012 09:45 PM, Huang Ying wrote:

    > Lower device sleep state can save more power, but has more exit
    > latency too. Sometimes, to satisfy some power QoS and other
    > requirement, we need to constrain the lowest device sleep state.
    >
    > In this patch, a parameter to specify lowest allowed state for
    > acpi_pm_device_sleep_state is added. So that the caller can enforce
    > the constraint via the parameter.
    >
    > This is needed by PCIe D3cold support, where the lowest power state
    > allowed may be D3_HOT instead of default D3_COLD.
    >
    > Changelog:
    >
    > v2:
    > - Minor change per Rafeal's comments
    >
    > Signed-off-by: Huang Ying <ying.huang@intel.com>
    > ---
    > drivers/acpi/sleep.c | 24 +++++++++++++++++++-----
    > drivers/pci/pci-acpi.c | 3 ++-
    > drivers/pnp/pnpacpi/core.c | 4 ++--
    > include/acpi/acpi_bus.h | 6 +++---
    > 4 files changed, 26 insertions(+), 11 deletions(-)



    Applied.

    thanks,
    Len Brown, Intel Open Source Technology Center



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