linux-kernel - RE: [PATCH v2] scsi: ufs: Fix possible infinite loop in ufshcd

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Message-ID: <1596760757.27829.8.camel@mtkswgap22>
Date:   Fri, 7 Aug 2020 08:39:17 +0800
From:   Stanley Chu <stanley.chu@...iatek.com>
To:     Avri Altman <Avri.Altman@....com>
CC:     Can Guo <cang@...eaurora.org>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        "alim.akhtar@...sung.com" <alim.akhtar@...sung.com>,
        "jejb@...ux.ibm.com" <jejb@...ux.ibm.com>,
        "bvanassche@....org" <bvanassche@....org>,
        "beanhuo@...ron.com" <beanhuo@...ron.com>,
        "asutoshd@...eaurora.org" <asutoshd@...eaurora.org>,
        "matthias.bgg@...il.com" <matthias.bgg@...il.com>,
        "linux-mediatek@...ts.infradead.org" 
        <linux-mediatek@...ts.infradead.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Kuohong Wang (王國鴻) 
        <kuohong.wang@...iatek.com>,
        Peter Wang (王信友) 
        <peter.wang@...iatek.com>,
        Chun-Hung Wu (巫駿宏) 
        <Chun-hung.Wu@...iatek.com>,
        Andy Teng (鄧如宏) 
        <Andy.Teng@...iatek.com>,
        Chaotian Jing (井朝天) 
        <Chaotian.Jing@...iatek.com>,
        CC Chou (周志杰) 
        <cc.chou@...iatek.com>
Subject: RE: [PATCH v2] scsi: ufs: Fix possible infinite loop in ufshcd_hold

Hi Avri,


On Tue, 2020-08-04 at 06:10 +0000, Avri Altman wrote:
> > Hi Avri,
> > 
> > Would you have any suggestions for this patch?
> > 
> > We need this patch to enable UFSHCD_CAP_HIBERN8_WITH_CLK_GATING in
> > MediaTek platform.
> > 
> > Thanks a lot,
> > 
> > Stanley Chu
> Let's use it for now as a short-term WA.
> Please work with Can on a proper fix that will utilize his idea to remove ufshcd_hold/release
> From ufshcd_send_uic_cmd, as you are both in agreement that this should work as the long term solution.
> 
> 
> > > > >
> > > > >>
> > > > >> > Signed-off-by: Stanley Chu <stanley.chu@...iatek.com>
> > > > >> > Signed-off-by: Andy Teng <andy.teng@...iatek.com>
> Reviewed-by: Avri Altman <avri.altman@....com>

Thanks!

I will continue with the long term solution with Can.

BTW, this mail seems not showing up in LKML or Patchwork, just reply
this mail with removing "[SPAM]" keyword in title.

Thanks,
Stanley Chu