linux-kernel - RE: [PATCH v21 2/4] scsi: ufs: L2P map management for HPB read

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Message-ID: <DM6PR04MB6575DFFA248FC9B5FD5BFBA4FC829@DM6PR04MB6575.namprd04.prod.outlook.com>
Date:   Sun, 21 Feb 2021 12:06:28 +0000
From:   Avri Altman <Avri.Altman@....com>
To:     "daejun7.park@...sung.com" <daejun7.park@...sung.com>,
        Greg KH <gregkh@...uxfoundation.org>,
        "jejb@...ux.ibm.com" <jejb@...ux.ibm.com>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        "asutoshd@...eaurora.org" <asutoshd@...eaurora.org>,
        "stanley.chu@...iatek.com" <stanley.chu@...iatek.com>,
        "cang@...eaurora.org" <cang@...eaurora.org>,
        "bvanassche@....org" <bvanassche@....org>,
        "huobean@...il.com" <huobean@...il.com>,
        ALIM AKHTAR <alim.akhtar@...sung.com>
CC:     "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        JinHwan Park <jh.i.park@...sung.com>,
        Javier Gonzalez <javier.gonz@...sung.com>,
        SEUNGUK SHIN <seunguk.shin@...sung.com>,
        Sung-Jun Park <sungjun07.park@...sung.com>,
        yongmyung lee <ymhungry.lee@...sung.com>,
        Jinyoung CHOI <j-young.choi@...sung.com>,
        BoRam Shin <boram.shin@...sung.com>
Subject: RE: [PATCH v21 2/4] scsi: ufs: L2P map management for HPB read

> +void ufshpb_rsp_upiu(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
> +{
> +       struct ufshpb_lu *hpb = ufshpb_get_hpb_data(lrbp->cmd->device);
> +       struct utp_hpb_rsp *rsp_field;
> +       int data_seg_len;
> +
> +       if (!hpb)
> +               return;
> +
> +       if (ufshpb_get_state(hpb) != HPB_PRESENT) {
> +               dev_notice(&hpb->sdev_ufs_lu->sdev_dev,
> +                          "%s: ufshpb state is not PRESENT\n", __func__);
> +               return;
> +       }
Theoretically, SSU response upiu may carry hpb sense data, isn't it?

Thanks,
Avri