Re: [PATCH] SPI: SSP SPI Controller driver

[Alan Cox <alan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>]

On Wed, 21 Nov 2012 17:44:21 +0530
Shubhrajyoti Datta <omaplinuxkernel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:

> On Wed, Nov 21, 2012 at 7:46 AM, chao bi <chao.bi-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> wrote:
> 
> > +       /* Create the PM_QOS request */
> > +       if (drv_context->quirks & QUIRKS_USE_PM_QOS)
> > +               pm_qos_add_request(&drv_context->pm_qos_req,
> > +               PM_QOS_CPU_DMA_LATENCY,
> > +               PM_QOS_DEFAULT_VALUE);
> >
> 
> What happens if the flag is not set if it is absolutely necessary for
> the driver it should not be a
> configurable option

If you read through the code it's set only when the device is
Moorestown/Oaktrail based and only in slave mode. It is not necessary
in other configurations.

Alan

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