linux-kernel - RE: [PATCH v4 1/3] scsi: ufs: Allow RTT negotiation

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Date: Thu, 16 May 2024 15:21:09 +0000
From: Avri Altman <Avri.Altman@....com>
To: Bart Van Assche <bvanassche@....org>, "Martin K . Petersen"
	<martin.petersen@...cle.com>
CC: Bean Huo <beanhuo@...ron.com>, Peter Wang <peter.wang@...iatek.com>,
	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v4 1/3] scsi: ufs: Allow RTT negotiation

> On 5/15/24 23:51, Avri Altman wrote:
> >   void ufshcd_fixup_dev_quirks(struct ufs_hba *hba,
> >                            const struct ufs_dev_quirk *fixups)
> >   {
> > @@ -8278,6 +8312,8 @@ static int ufs_get_device_desc(struct ufs_hba *hba)
> >       if (hba->ext_iid_sup)
> >               ufshcd_ext_iid_probe(hba, desc_buf);
> >
> > +     ufshcd_rtt_set(hba, desc_buf);
> > +
> 
> Why does this call occur in ufs_get_device_desc()? ufshcd_rtt_set() sets
> a device parameter. Shouldn't this call be moved one level up into
> ufshcd_device_params_init()?
Because otherwise bDeviceRTTCap is not available.
Please note several device configuration calls in  ufs_get_device_desc - all requires some device descriptor fields.

Thanks,
Avri
> 
> Otherwise this patch looks good to me.
> 
> Thanks,
> 
> Bart.