linux-kernel - Re: [RFC PATCH v3 4/4] ufs: host: qcom: Add MCQ support

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Date:   Fri, 9 Sep 2022 15:43:31 -0700
From:   "Asutosh Das (asd)" <quic_asutoshd@...cinc.com>
To:     Bart Van Assche <bvanassche@....org>, <quic_nguyenb@...cinc.com>,
        <quic_xiaosenh@...cinc.com>, <stanley.chu@...iatek.com>,
        <adrian.hunter@...el.com>, <avri.altman@....com>,
        <mani@...nel.org>, <quic_cang@...cinc.com>, <beanhuo@...ron.com>,
        <martin.petersen@...cle.com>, <linux-scsi@...r.kernel.org>
CC:     <linux-arm-msm@...r.kernel.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH v3 4/4] ufs: host: qcom: Add MCQ support

Hello Bart,
Thanks for taking a look.

On 9/8/2022 3:30 PM, Bart Van Assche wrote:
> On 9/2/22 15:41, Asutosh Das wrote:
>> +static int ufs_qcom_get_hba_mac(struct ufs_hba *hba)
>> +{
>> +    return MAX_SUPP_MAC;
>> +}
> 
> The above implementation is not sufficient to convince me that the 
> get_hba_mac vop is useful. Please remove this vop and use MAX_SUPP_MAC 
> directly where ufshcd_mcq_vops_get_hba_mac() is called.
> 
The default value of MAC is 32 but it can have a max value of 256.
Here it has a value of 64.
So I think this vops would be helpful for other HC vendors as well who 
may have a different value than the default.

> Thanks,
> 
> Bart.

-asd