linux-kernel - Re: [PATCH] PCIe ASPM causes machine (HP Compaq 6735s) to sometimes freeze hard at boot at PCI initialization time

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Message-ID: <20081205182148.GA28192@srcf.ucam.org>
Date:	Fri, 5 Dec 2008 18:21:48 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Thomas Renninger <trenn@...e.de>
Cc:	linux-kernel@...r.kernel.org, jbarnes@...tuousgeek.org,
	shaohua.li@...el.com, Rafael Wysocki <rwysocki@...e.de>,
	shemminger@...ux-foundation.org, netdev@...r.kernel.org,
	Stable@...nel.org
Subject: Re: [PATCH] PCIe ASPM causes machine (HP Compaq 6735s) to sometimes freeze hard at boot at PCI initialization time

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.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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