On Thu, 31 Dec 2009 12:15:54 +0100 "Rafael J. Wysocki" <rjw@xxxxxxx> wrote: > From: Rafael J. Wysocki <rjw@xxxxxxx> > > It turns out that some PCI devices require extra delays when changing > power state from D3 to D0 (and the other way around). Although this > is against the PCI specification, we can handle it quite easily by > allowing drivers to define arbitrary D3 delays for devices known to > require extra time for switching power states. > > Introduce additional field d3_delay in struct pci_dev and use it to > store the value of the device's D0->D3 delay, in miliseconds. Make > the PCI PM core code use the per-device d3_delay unless > pci_pm_d3_delay is greater (in which case the latter is used). > [This also allows the driver to specify d3_delay shorter than the > 10 ms required by the PCI standard if the device is known to be able > to handle that.] > > Make the sky2 driver set d3_delay to 150 for devices handled by it. > > Fixes http://bugzilla.kernel.org/show_bug.cgi?id=14730 which is a > listed regression from 2.6.30. > > Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Applied to my for-linus branch, thanks. -- Jesse Barnes, Intel Open Source Technology Center -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
