Re: [PATCH] remoteproc: qcom: q6v5: shore up resource probe handling

Bjorn Andersson
2018-10-10T06:19:20Z

On Tue 09 Oct 16:34 PDT 2018, Doug Anderson wrote:

> Hi,
>
> On Tue, Oct 9, 2018 at 3:33 PM Brian Norris <briannorris@chromium.org> wrote:
> > + if (q6v5->wdog_irq < 0) {
> > + if (q6v5->wdog_irq != -EPROBE_DEFER)
> > + dev_err(&pdev->dev,
> > + "failed to retrieve wdog IRQ: %d\n",
> > + q6v5->wdog_irq);
> > + return q6v5->wdog_irq;
> > + }
>
> optional: Since there's the same pattern 5 times here, I wonder if we
> should abstract it out to a helper function that would print the
> error?
>

Before breaking this code out to a common function shared between the
various q6v5 drivers this was a separate helper function, but that
wasn't pretty either :/

> ...in the ideal case it would be somewhere that all Linux drivers
> could use since this is a super common pattern, but that might be a
> bit too much yak shaving...
>

Yeah I agree, it would be a nice helper but there's a bunch of variants
involved. I've added it on the "someday/maybe" list.

>
> > @@ -237,8 +260,13 @@ int qcom_q6v5_init(struct qcom_q6v5 *q6v5, struct platform_device *pdev,
> > disable_irq(q6v5->handover_irq);
> >
> > q6v5->stop_irq = platform_get_irq_byname(pdev, "stop-ack");
> > - if (q6v5->stop_irq == -EPROBE_DEFER)
> > - return -EPROBE_DEFER;
> > + if (q6v5->stop_irq < 0) {
> > + if (q6v5->stop_irq != -EPROBE_DEFER)
> > + dev_err(&pdev->dev,
> > + "failed to retrieve stop IRQ: %d\n",
> > + q6v5->stop_irq);
> > + return q6v5->stop_irq;
>
> Nitty nit that it's the "stop-ack" IRQ, not the "stop" IRQ. The error
> message below this one calls it stop-ack too so it would be ideal to
> keep it consistent between the two error messages.
>
> Reviewed-by: Douglas Anderson <dianders@chromium.org>

I applied the patch with the nit fixed and your r-b.

Thanks,
Bjorn