linux-kernel - Re: [PATCH 10/14] phy: meson8b-usb2: simplify optional reset handling

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Message-ID: <1487177576.2433.45.camel@pengutronix.de>
Date:   Wed, 15 Feb 2017 17:52:56 +0100
From:   Philipp Zabel <p.zabel@...gutronix.de>
To:     Jerome Brunet <jbrunet@...libre.com>
Cc:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Ramiro Oliveira <Ramiro.Oliveira@...opsys.com>,
        Kevin Hilman <khilman@...libre.com>,
        Carlo Caione <carlo@...one.org>,
        Kishon Vijay Abraham I <kishon@...com>
Subject: Re: [PATCH 10/14] phy: meson8b-usb2: simplify optional reset
 handling

Hi Jerome,

On Wed, 2017-02-15 at 17:43 +0100, Jerome Brunet wrote:
[...]
> > > @@ -241,7 +239,7 @@ static int phy_meson8b_usb2_probe(struct
> > > platform_device *pdev)
> > >                 return PTR_ERR(priv->clk_usb);
> > > 
> > >         priv->reset = devm_reset_control_get_optional_shared(&pdev-
> > > >dev, NULL);
> > > -       if (PTR_ERR(priv->reset) == -EPROBE_DEFER)
> > > +       if (PTR_ERR(priv->reset))
> 
> This is wrong and will always exit on error. It should be "IS_ERR".
> Clearly the bug was there before your patch, but since you are changing
> the faulty line, would you mind using IS_ERR instead ?
> 
> With this changed:
> Tested-by: Jerome Brunet <jbrunet@...libre.com>

Thanks for catching this, I should have changed this to IS_ERR when
removing the error value comparison.

regards
Philipp