linux-kernel - Re: [PATCH v3 03/17] ufs: core: Introduce Multi-circular queue capability

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Message-ID: <b5082698-1dfe-ceee-b263-439a719a55c3@acm.org>
Date:   Fri, 28 Oct 2022 14:44:01 -0700
From:   Bart Van Assche <bvanassche@....org>
To:     Asutosh Das <quic_asutoshd@...cinc.com>
Cc:     quic_cang@...cinc.com, martin.petersen@...cle.com,
        linux-scsi@...r.kernel.org, quic_nguyenb@...cinc.com,
        quic_xiaosenh@...cinc.com, stanley.chu@...iatek.com,
        eddie.huang@...iatek.com, daejun7.park@...sung.com,
        avri.altman@....com, mani@...nel.org, beanhuo@...ron.com,
        quic_richardp@...cinc.com, linux-arm-msm@...r.kernel.org,
        Alim Akhtar <alim.akhtar@...sung.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 03/17] ufs: core: Introduce Multi-circular queue
 capability

On 10/28/22 09:51, Asutosh Das wrote:
> On Thu, Oct 27 2022 at 14:10 -0700, Bart Van Assche wrote:
>> Since UFSHCI 4.0 controllers must support UFSHCI 3.0, shouldn't users 
>> have a way to disable MCQ, e.g. via a kernel module parameter?
>>
> I can add a kernel module parameter to disable MCQ.
> I think adding it to host driver (e.g. ufs-qcom) would be good.
> Please let me know if you have a better place in mind.

Since this functionality is useful for all host controllers please add 
it in the core UFS host controller driver (drivers/ufs/core/ufshcd.c).

Thanks,

Bart.