Messages in this thread | | | Date | Thu, 24 May 2012 21:45:38 +0100 | From | Matthew Garrett <> | Subject | Re: [PATCH] PCI / ACPI: Do not request control of ASPM if the BIOS has disabled it |
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On Thu, May 24, 2012 at 10:45:45PM +0200, Rafael J. Wysocki wrote:
> However, knowing that the BIOS doesn't support ASPM, we shouldn't > request the control of it, so we should remove > (OSC_ACTIVE_STATE_PWR_SUPPORT | OSC_CLOCK_PWR_CAPABILITY_SUPPORT) > from the flags before calling acpi_pci_osc_control_set() in those > cases. Failing to do so causes the evaluation of _OSC for the PCI > root bridge to return error codes on some systems where it should > work correctly.
Is there an example of an affected machine's DSDT?
-- Matthew Garrett | mjg59@srcf.ucam.org
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