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From: Daniel Lezcano <daniel.lezcano@linaro.org>
To: Anson Huang <anson.huang@nxp.com>,
	"rui.zhang@intel.com" <rui.zhang@intel.com>,
	"amit.kucheria@verdurent.com" <amit.kucheria@verdurent.com>,
	"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Cc: dl-linux-imx <linux-imx@nxp.com>
Subject: Re: [PATCH 1/2] thermal: qoriq: Use devm_add_action_or_reset() to handle all cleanups
Date: Thu, 12 Mar 2020 12:56:39 +0100	[thread overview]
Message-ID: <831cd71d-04dc-834f-fa28-6091a186dce3@linaro.org> (raw)
In-Reply-To: <DB3PR0402MB3916BF7EF180809EC374CC7CF5FD0@DB3PR0402MB3916.eurprd04.prod.outlook.com>

On 12/03/2020 12:47, Anson Huang wrote:
> 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?

TBH, I discovered the function with your patch. My concern is if the
callback is called when unloading the module.


>>> Signed-off-by: Anson Huang <Anson.Huang@nxp.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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  reply	other threads:[~2020-03-12 11:56 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-11  5:07 Anson Huang
2020-03-11  5:07 ` [PATCH 2/2] thermal: qoriq: Sort includes alphabetically Anson Huang
2020-03-11  8:57   ` Amit Kucheria
2020-03-11  8:59 ` [PATCH 1/2] thermal: qoriq: Use devm_add_action_or_reset() to handle all cleanups Amit Kucheria
2020-03-12 11:24 ` Daniel Lezcano
2020-03-12 11:47   ` Anson Huang
2020-03-12 11:56     ` Daniel Lezcano [this message]
2020-03-12 12:19       ` Anson Huang
2020-03-17  1:14         ` Anson Huang
2020-03-17  9:07           ` Daniel Lezcano

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