Kenneth D. Merry ken at
Mon Sep 10 21:25:19 PDT 2007

On Mon, Sep 10, 2007 at 22:12:52 -0600, Scott Long wrote:
> All,
> The attached patch should make CAM behave properly with regard to
> probing device serial numbers only when the device advertises that
> it supports it.  It will hopefully eliminate the need for the 
> CAM_QUIRK_NOSERIAL quirk (one instance is left because of an unrelated 
> legacy problem that may or may not be possible to fix).  This should
> especially benefit USB-UMASS devices, where the console output should
> be less noisy.  It might even make more devices work out-of-the-box.
> So please focus testing on USB, but I'd also ask that people test
> the following devices as well as any firewire devices:
>  * Western Digital My Book 250GB (USB)
>  * Maxtor Personal Storage 3000XT (Firewire)

Good idea.  I wonder, though, whether devices that hang or otherwise blow
up on a serial number inquiry would also have trouble with the supported
pages VPD page.  All the more reason we'll need people with the quirked
hardware to test it...

Kenneth Merry
ken at

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