Re: [PATCH] PCIe ASPM causes machine (HP Compaq 6735s) tosometimes freeze hard at boot at PCI initialization time

From: Shaohua Li
Date: Sun Dec 07 2008 - 20:33:00 EST

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?


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