linux-kernel - Re: [PATCH v1 1/1] scsi: ufs: full reinit upon resume if link was off

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Message-ID: <1585528506.4609.13.camel@mtksdccf07>
Date:   Mon, 30 Mar 2020 08:35:06 +0800
From:   Stanley Chu <stanley.chu@...iatek.com>
To:     Can Guo <cang@...eaurora.org>
CC:     <asutoshd@...eaurora.org>, <nguyenb@...eaurora.org>,
        <hongwus@...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>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Bean Huo <beanhuo@...ron.com>,
        "Bart Van Assche" <bvanassche@....org>,
        Venkat Gopalakrishnan <venkatg@...eaurora.org>,
        Tomas Winkler <tomas.winkler@...el.com>,
        "open list" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 1/1] scsi: ufs: full reinit upon resume if link was
 off

Hi Can,

On Fri, 2020-03-27 at 19:27 -0700, Can Guo wrote:
> From: Asutosh Das <asutoshd@...eaurora.org>
> 
> During suspend, if the link is put to off, it would require
> a full initialization during resume. This patch resets and
> restores both the hba and the card during initialization.
> 
> Signed-off-by: Asutosh Das <asutoshd@...eaurora.org>
> Signed-off-by: Can Guo <cang@...eaurora.org>

Personally I like this patch because the re-initialization performance
is improved in my test platform with my patch "scsi: ufs: set device as
active power mode after resetting device" working together. But I am not
sure if every vendor is happy about this.

Anyway,
Acked-by: Stanley Chu <stanley.chu@...iatek.com>