linux-kernel - RE: [PATCH 1/2] thermal: qoriq: Use devm_add_action_or

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Date:   Thu, 12 Mar 2020 11:47:33 +0000
From:   Anson Huang <anson.huang@....com>
To:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        "rui.zhang@...el.com" <rui.zhang@...el.com>,
        "amit.kucheria@...durent.com" <amit.kucheria@...durent.com>,
        "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     dl-linux-imx <linux-imx@....com>
Subject: RE: [PATCH 1/2] thermal: qoriq: Use devm_add_action_or_reset() to
 handle all cleanups

Hi, Daniel

> Subject: Re: [PATCH 1/2] thermal: qoriq: Use devm_add_action_or_reset() to
> handle all cleanups
> 
> On 11/03/2020 06:07, Anson Huang wrote:
> > Use devm_add_action_or_reset() to handle all cleanups of failure in
> > .probe and .remove, then .remove callback can be dropped.
> 
> Is this change compatible with the tristate?

I think so, any concern need me to double confirm?

Thanks,
Anson

> 
> > Signed-off-by: Anson Huang <Anson.Huang@....com>
> > ---
> >  drivers/thermal/qoriq_thermal.c | 35
> > ++++++++++++++---------------------
> >  1 file changed, 14 insertions(+), 21 deletions(-)
> >
> > diff --git a/drivers/thermal/qoriq_thermal.c
> > b/drivers/thermal/qoriq_thermal.c index 874bc46..67a8d84 100644
> > --- a/drivers/thermal/qoriq_thermal.c
> > +++ b/drivers/thermal/qoriq_thermal.c
> > @@ -228,6 +228,14 @@ static const struct regmap_access_table
> qoriq_rd_table = {
> >  	.n_yes_ranges	= ARRAY_SIZE(qoriq_yes_ranges),
> >  };
> >
> > +static void qoriq_tmu_action(void *p) {
> > +	struct qoriq_tmu_data *data = p;
> > +
> > +	regmap_write(data->regmap, REGS_TMR, TMR_DISABLE);
> > +	clk_disable_unprepare(data->clk);
> > +}
> > +
> >  static int qoriq_tmu_probe(struct platform_device *pdev)  {
> >  	int ret;
> > @@ -278,6 +286,10 @@ static int qoriq_tmu_probe(struct platform_device
> *pdev)
> >  		return ret;
> >  	}
> >
> > +	ret = devm_add_action_or_reset(dev, qoriq_tmu_action, data);
> > +	if (ret)
> > +		return ret;
> > +
> >  	/* version register offset at: 0xbf8 on both v1 and v2 */
> >  	ret = regmap_read(data->regmap, REGS_IPBRR(0), &ver);
> >  	if (ret) {
> > @@ -290,35 +302,17 @@ static int qoriq_tmu_probe(struct
> > platform_device *pdev)
> >
> >  	ret = qoriq_tmu_calibration(dev, data);	/* TMU calibration */
> >  	if (ret < 0)
> > -		goto err;
> > +		return ret;
> >
> >  	ret = qoriq_tmu_register_tmu_zone(dev, data);
> >  	if (ret < 0) {
> >  		dev_err(dev, "Failed to register sensors\n");
> > -		ret = -ENODEV;
> > -		goto err;
> > +		return ret;
> >  	}
> >
> >  	platform_set_drvdata(pdev, data);
> >
> >  	return 0;
> > -
> > -err:
> > -	clk_disable_unprepare(data->clk);
> > -
> > -	return ret;
> > -}
> > -
> > -static int qoriq_tmu_remove(struct platform_device *pdev) -{
> > -	struct qoriq_tmu_data *data = platform_get_drvdata(pdev);
> > -
> > -	/* Disable monitoring */
> > -	regmap_write(data->regmap, REGS_TMR, TMR_DISABLE);
> > -
> > -	clk_disable_unprepare(data->clk);
> > -
> > -	return 0;
> >  }
> >
> >  static int __maybe_unused qoriq_tmu_suspend(struct device *dev) @@
> > -365,7 +359,6 @@ static struct platform_driver qoriq_tmu = {
> >  		.of_match_table	= qoriq_tmu_match,
> >  	},
> >  	.probe	= qoriq_tmu_probe,
> > -	.remove	= qoriq_tmu_remove,
> >  };
> >  module_platform_driver(qoriq_tmu);
> >
> >
> 
> 
> --
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