linux-kernel - Re: [PATCH v5 3/7] scsi: ufs: Fix up auto hibern8 enablement

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Message-ID: <1573825602.4956.11.camel@mtkswgap22>
Date:   Fri, 15 Nov 2019 21:46:42 +0800
From:   Stanley Chu <stanley.chu@...iatek.com>
To:     Can Guo <cang@...eaurora.org>
CC:     <asutoshd@...eaurora.org>, <nguyenb@...eaurora.org>,
        <rnayak@...eaurora.org>, <linux-scsi@...r.kernel.org>,
        <kernel-team@...roid.com>, <saravanak@...gle.com>,
        <salyzyn@...gle.com>, Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>,
        Pedro Sousa <pedrom.sousa@...opsys.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Bean Huo <beanhuo@...ron.com>,
        Tomas Winkler <tomas.winkler@...el.com>,
        Venkat Gopalakrishnan <venkatg@...eaurora.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Arnd Bergmann <arnd@...db.de>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 3/7] scsi: ufs: Fix up auto hibern8 enablement

Hi Can,

On Fri, 2019-11-15 at 20:27 +0800, Can Guo wrote:

> Hi Stanley,
> 
> Actually, I thought about the way you reommand.
> 
> But I guess the author's intention here is to update the AH8 timer
> only when current runtime status is RPM_ACTIVE. If it is not RPM_ACTIVE,
> we just update the hba->ahit and bail out, because the AH8 timer will be
> updated in ufshcd_reusme() eventually when hba is resumed. This can 
> avoid
> frequently waking up hba just for accessing a single register.
> How do you think?
> 
> Thanks,
> Can Guo.
> 
> 

Agree with you.

Thanks :)

Reviewed-by: Stanley Chu <stanley.chu@...iatek.com>