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Message-ID: <f51578a139b028f2fa85e738d52f50356027bb26.camel@mediatek.com>
Subject: Re: [PATCH v3 04/10] scsi: ufs-mediatek: Fix the timing of
 configuring device regulators
From:   Stanley Chu <stanley.chu@mediatek.com>
To:     Bart Van Assche <bvanassche@acm.org>, <linux-scsi@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, <martin.petersen@oracle.com>,
        <avri.altman@wdc.com>, <alim.akhtar@samsung.com>,
        <jejb@linux.ibm.com>
CC:     <peter.wang@mediatek.com>, <chun-hung.wu@mediatek.com>,
        <alice.chao@mediatek.com>, <powen.kao@mediatek.com>,
        <mason.zhang@mediatek.com>, <qilin.tan@mediatek.com>,
        <lin.gui@mediatek.com>, <eddie.huang@mediatek.com>,
        <tun-yu.yu@mediatek.com>, <cc.chou@mediatek.com>,
        <chaotian.jing@mediatek.com>, <jiajie.hao@mediatek.com>
Date:   Wed, 15 Jun 2022 11:49:14 +0800
In-Reply-To: <bc6fc2fa-df9a-60cb-3929-9dd5808eced2@acm.org>
References: <20220614141655.14409-1-stanley.chu@mediatek.com>
         <20220614141655.14409-5-stanley.chu@mediatek.com>
         <bc6fc2fa-df9a-60cb-3929-9dd5808eced2@acm.org>
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On Tue, 2022-06-14 at 09:33 -0700, Bart Van Assche wrote:
> On 6/14/22 07:16, Stanley Chu wrote:
> > +int ufs_mtk_system_suspend(struct device *dev)
> > +{
> > +	int ret = 0;
> > +	struct ufs_hba *hba = dev_get_drvdata(dev);
> > +
> > +	ret = ufshcd_system_suspend(dev);
> > +
> > +	if (!ret)
> > +		ufs_mtk_vreg_set_lpm(hba, true);
> > +
> > +	return ret;
> > +}
> 
> 
> Please use the traditional kernel coding style and return early in
> case 
> of an error. For the above code, that means to rewrite it as follows:
> 
> 	struct ufs_hba *hba = dev_get_drvdata(dev);
> 	int ret;
> 
> 	ret = ufshcd_system_suspend(dev);
> 	if (ret)
> 		return ret;
> 
> 	ufs_mtk_vreg_set_lpm(hba, true);
> 
> 	return 0;

OK! Fixed in v4.

> 
> > +int ufs_mtk_system_resume(struct device *dev)
> > +{
> > +	int ret = 0;
> > +	struct ufs_hba *hba = dev_get_drvdata(dev);
> > +
> > +	ufs_mtk_vreg_set_lpm(hba, false);
> > +
> > +	ret = ufshcd_system_resume(dev);
> > +
> > +	return ret;
> > +}
> 
> Please remove the variable 'ret' from the above function.

OK! Fixed in v4.
> 
> > +int ufs_mtk_runtime_suspend(struct device *dev)
> > +{
> > +	struct ufs_hba *hba = dev_get_drvdata(dev);
> > +	int ret = 0;
> > +
> > +	ret = ufshcd_runtime_suspend(dev);
> > +
> > +	if (!ret)
> > +		ufs_mtk_vreg_set_lpm(hba, true);
> > +
> > +	return ret;
> > +}
> 
> Please use the "early return" style.

OK! Fixed in v4.
> 
> > +int ufs_mtk_runtime_resume(struct device *dev)
> > +{
> > +	struct ufs_hba *hba = dev_get_drvdata(dev);
> > +	int ret = 0;
> > +
> > +	ufs_mtk_vreg_set_lpm(hba, false);
> > +
> > +	ret = ufshcd_runtime_resume(dev);
> > +
> > +	return ret;
> > +}
> 
> Please remove the variable 'ret' from the above function.

OK! Fixed in v4.
> 
> Thanks,
> 
> Bart.