On Fri, Jul 22, 2011 at 11:45:21AM +0200, Eric Andersson wrote:
> Hi Dmitry,
>
> Thanks for reviewing!
>
> > > +static int bma150_open(struct bma150_data *bma150)
> > > +{
> > > +#ifdef CONFIG_PM_RUNTIME
> > > + return pm_runtime_get_sync(&bma150->client->dev);
> > > +#else
> > > + return bma150_set_mode(bma150->client, BMA150_MODE_NORMAL);
> >
> > Hmm, this is kind of weird. I'd expect you want to try waking up the
> > parent in both cases (if no runtime pm then call to pm_runtime_get_sync
> > is basically a noop) and then wake up your device.
>
> I am not sure what you mean? Are you suggesting something like:
> bma150_set_mode(bma150->client, BMA150_MODE_NORMAL);
> return pm_runtime_get_sync(&bma150->client->dev);
>
> That would cause multiple bma150_set_mode() calls since
> pm_runtime_get_sync() will trigger one if needed.
>
Right... It looks like instead of calling pm_runtime_get_sync() we need
to do something like this:
static int bma150_open(struct bma150_data *bma150)
{
int error;
error = pm_runtime_set_active(&bma150->client->dev);
if (error)
return error;
return bma150_set_mode(bma150->client, BMA150_MODE_NORMAL);
}
and opposite in bma150_close().
Thanks.
--
Dmitry
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