linux-kernel - RE: [PATCH v1 4/4] scsi: ufs-mediatek: remove delay for host enabling

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Date:   Thu, 5 Mar 2020 21:25:57 +0800
From:   Stanley Chu <stanley.chu@...iatek.com>
To:     Avri Altman <Avri.Altman@....com>
CC:     "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>,
        "beanhuo@...ron.com" <beanhuo@...ron.com>,
        "asutoshd@...eaurora.org" <asutoshd@...eaurora.org>,
        "cang@...eaurora.org" <cang@...eaurora.org>,
        "matthias.bgg@...il.com" <matthias.bgg@...il.com>,
        "bvanassche@....org" <bvanassche@....org>,
        "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@...iatek.com" <kuohong.wang@...iatek.com>,
        "peter.wang@...iatek.com" <peter.wang@...iatek.com>,
        "chun-hung.wu@...iatek.com" <chun-hung.wu@...iatek.com>,
        "andy.teng@...iatek.com" <andy.teng@...iatek.com>
Subject: RE: [PATCH v1 4/4] scsi: ufs-mediatek: remove delay for host
 enabling

Hi Avri,

On Thu, 2020-03-05 at 13:14 +0000, Avri Altman wrote:
> Hi Stanley,
> 
> > 
> > 
> > MediaTek platform and UFS controller do not require the delay
> > for host enabling, thus remove it.
> > 
> > Signed-off-by: Stanley Chu <stanley.chu@...iatek.com>
> > ---
> >  drivers/scsi/ufs/ufs-mediatek.c | 2 ++
> >  1 file changed, 2 insertions(+)
> > 
> > diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
> > index 3b0e575d7460..ea3b5fd62492 100644
> > --- a/drivers/scsi/ufs/ufs-mediatek.c
> > +++ b/drivers/scsi/ufs/ufs-mediatek.c
> > @@ -258,6 +258,8 @@ static int ufs_mtk_init(struct ufs_hba *hba)
> I would expect to set whatever is needed for your host controller
> In ufshcd_vops_hce_enable_notify(hba, PRE_CHANGE), and not here.
> 

I think this is a good suggestion! And thus we could have more
flexibility to customize the value according to different scenarios.

I will consider this approach in next version.

Thanks!
Stanley Chu