Re: [PATCH v2] storage: accept some UAS devices if streams are unavailable

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On Fri, 2014-02-21 at 15:00 -0800, Sarah Sharp wrote:
> On Tue, Feb 11, 2014 at 08:36:04PM +0100, oliver@xxxxxxxxxx wrote:
> > From: Oliver Neukum <oneukum@xxxxxxx>
> > 
> > On some older XHCIs streams are not supported and the UAS driver
> > will fail at probe time. For those devices storage should try
> > to bind to UAS devices.
> > This patch adds a flag for stream support to HCDs and evaluates
> > it.
> 
> Oliver, the logic in this patch is off.  When I plug it into an Intel
> Panther Point xHCI host that has hcc_params set to 0x20007181, which
> translates to 2^(7+1) stream IDs, the device comes up as usb-storage,
> not uas:

Thank you, this is subtle. I'd test this but only whether it fixed
the error case. I shall test this on all configurations. It'll take a
few hours.

	Regards
		Oliver


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