Re: USB serial regression 2.6.31.1 -> 2.6.31.2 [PATCH]

[Alan Stern]

On Tue, 13 Oct 2009, Benjamin Herrenschmidt wrote:

> usb-storage: Workaround devices with bogus sense size
> 
> Some devices, such as Huawei E169, advertise more than the standard
> amount of sense data, causing us to set US_FL_SANE_SENSE, assuming
> they support it. However, they subsequently fail the request sense
> with that size.
> 
> This works around it generically. When a sense request fails due to
> a device returning an error, US_FL_SANE_SENSE was set, and that sense
> request used a larger sense size, we retry with a smaller size before
> giving up.
> 
> Based on an original patch by Ben Efros <ben@xxxxxxxxxxxxx>
> 
> Signed-off-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>

Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>

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