linux-kernel - Re: [PATCH] pwm: sun4i: Fix inconsistent IS_ERR and PTR

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Date:   Thu, 9 Jan 2020 10:14:00 +0100
From:   Clément Péron <peron.clem@...il.com>
To:     Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
Cc:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Linux PWM List <linux-pwm@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] pwm: sun4i: Fix inconsistent IS_ERR and PTR_ERR

Hi Uwe, Gustavo,

On Thu, 9 Jan 2020 at 08:44, Uwe Kleine-König
<u.kleine-koenig@...gutronix.de> wrote:
>
> Hello Gustavo,
>
> On Thu, Jan 09, 2020 at 01:27:35AM -0600, Gustavo A. R. Silva wrote:
> > Fix inconsistent IS_ERR and PTR_ERR in sun4i_pwm_probe().
> >
> > The proper pointers to be passed as arguments are pwm->clk and pwm->bus_clk.

Thanks for the catch.

As these patches are still in next should we update them or apply a fix ?

Regards,
Clement

> >
> > This bug was detected with the help of Coccinelle.
> >
> > Fixes: b8d74644f34a ("pwm: sun4i: Prefer "mod" clock to unnamed")
> > Fixes: 5b090b430d75 ("pwm: sun4i: Add an optional probe for bus clock")
> > Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
> > ---
> >  drivers/pwm/pwm-sun4i.c | 6 +++---
> >  1 file changed, 3 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/pwm/pwm-sun4i.c b/drivers/pwm/pwm-sun4i.c
> > index 1afd41ebd3fd..a805c347ee84 100644
> > --- a/drivers/pwm/pwm-sun4i.c
> > +++ b/drivers/pwm/pwm-sun4i.c
> > @@ -423,7 +423,7 @@ static int sun4i_pwm_probe(struct platform_device *pdev)
> >        */
> >       pwm->clk = devm_clk_get_optional(&pdev->dev, "mod");
> >       if (IS_ERR(pwm->clk)) {
> > -             if (PTR_ERR(pwm->rst) != -EPROBE_DEFER)
> > +             if (PTR_ERR(pwm->clk) != -EPROBE_DEFER)
>
> How embarrassing that I didn't notice these. Thanks for catching.
>
> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
>
> Best regards
> Uwe
>
> --
> Pengutronix e.K.                           | Uwe Kleine-König            |
> Industrial Linux Solutions                 | https://www.pengutronix.de/ |