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    SubjectRe: [PATCH] PCIe ASPM causes machine (HP Compaq 6735s) to sometimes freeze hard at boot at PCI initialization time
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    On Monday 08 December 2008 02:32:42 Shaohua Li wrote:
    > On Sat, 2008-12-06 at 02:21 +0800, Matthew Garrett wrote:
    > > On Fri, Dec 05, 2008 at 02:07:13PM +0100, Thomas Renninger wrote:
    > > > PCIE: Break out of endless loop waiting for PCI config bits to switch
    > > >
    > > > Makes a Compaq 6735s boot reliably again which hang in the loop
    > > > on some boots.
    > >
    > > Which device does it get stuck on?
    > >
    > > > + if (loop_count == 100)
    > > > + dev_printk (KERN_WARNING, &pdev->dev, "Could not configure ASPM\n");
    > >
    > > "ASPM: Could not configure common clock\n"? ASPM should still work,
    > > though with higher latency. It probably also needs to revert the
    > > configuration changes.
    >
    > Yep, Just undo the pci config writes of pcie_aspm_configure_common_clock
    > should be fine to me. Maybe an expiration time is ok here.
    > Does the device work after this?

    After not writing back the pci values as done with this patch?
    Yes, I think it did.

    It definitely does with this patch.

    What about this one:



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