linux-kernel - Re: [PATCH] pwm-omap: handle timers not ready in probe

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Message-ID: <20180716083720.GA3047@amd>
Date:   Mon, 16 Jul 2018 10:37:20 +0200
From:   Pavel Machek <pavel@....cz>
To:     Tony Lindgren <tony@...mide.com>, DRivshin@...worx.com
Cc:     Sebastian Reichel <sre@...nel.org>,
        kernel list <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-omap@...r.kernel.org, nekit1000@...il.com, mpartap@....net,
        merlijn@...zup.org
Subject: Re: [PATCH] pwm-omap: handle timers not ready in probe

On Mon 2018-07-16 00:57:40, Tony Lindgren wrote:
> * Pavel Machek <pavel@....cz> [180716 07:16]:
> > 
> > When all the drivers are built-in, timers are not ready and probing
> > fails. Fix that with -EPROBE_DEFFER.
> > 
> > Signed-off-by: Pavel Machek <pavel@....cz>
> > 
> > diff --git a/drivers/pwm/pwm-omap-dmtimer.c b/drivers/pwm/pwm-omap-dmtimer.c
> > index 665da3c..debeb70 100644
> > --- a/drivers/pwm/pwm-omap-dmtimer.c
> > +++ b/drivers/pwm/pwm-omap-dmtimer.c
> > @@ -265,7 +271,7 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev)
> >  	timer_pdata = dev_get_platdata(&timer_pdev->dev);
> >  	if (!timer_pdata) {
> >  		dev_err(&pdev->dev, "dmtimer pdata structure NULL\n");
> > -		ret = -EINVAL;
> > +		ret = -EPROBE_DEFER;
> >  		goto put;
> >  	}
> 
> There seems to be an earlier similar patch, care to take a look
> at "[PATCH] pwm: pwm-omap-dmtimer: return -EPROBE_DEFER if no
> dmtimer platform data"?

Yes, that one is equivalent.

You can add

Acked-by: Pavel Machek <pavel@....cz>
Tested-by: Pavel Machek <pavel@....cz>

on it.

Thanks,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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