Re: Purpose of the "msg->status"

[jassi brar <jassisinghbrar-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

On Mon, Mar 15, 2010 at 10:06 PM, Centelles, Sylvain
<sylvain.centelles-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> wrote:
> Hi Baruch,
> Thx for your fast answer.
> I had seen this piece of code. But if this is the only purpose of the msg->status, then it means it's only used to give return status of the transfer after the completion.
> That mean that the only possible value will be an error code or success. The EINPROGRESS (used in the pxa2xx_spi.c for example) will never have a chance to be returned at this place, as any completion will overwrite it. Right?
> That what was confusing me...
When a xfer is submitted, the status is set by default should the xfer
exit via some un-tested path.
If the driver state machine has only fixed and tested exit points, you
perhaps don't need to set
the default status.

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