Re: [PATCH 3/3] x86: usb handoff in early_quirk

[Greg KH]

On Sun, Jan 09, 2011 at 11:59:56AM -0800, Yinghai Lu wrote:
> 
> some systems keep getting
>   APIC calibration not consistent with PM-Timer: 139ms instead of 100ms
>   APIC delta adjusted to PM-Timer: 831249 (1163736)
> 
> USB legacy SMI handler is not disabled at that time.
> 
> Try to disable USB legacy support early with this patch.
> So later APIC Timer calibration don't get messed up by USB legacy support SMI handler.
> After this patch, that warning never show up for 100 reboot tests.

But is that warning a real issue?  Does it cause problems for the user
(becides annoying them of course)?

> reuse code from drivers/usb/host/pci-quirks.c
> with changes
> 1. delay and sleep  ===> io_delay
> 2. dev_warn etc to pr_warn(num, slot, func...)

Why change this function?  What's wrong with dev_warn()?  It's much more
descriptive of the device that is being referred to.

thanks,

greg k-h
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