linux-kernel - RE: [PATCH v22 2/4] scsi: ufs: L2P map management for HPB read

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Message-ID: <DM6PR04MB65754213307A31CE51C829D0FC809@DM6PR04MB6575.namprd04.prod.outlook.com>
Date:   Tue, 23 Feb 2021 07:54:17 +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>,
        Javier Gonzalez <javier.gonz@...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>,
        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 v22 2/4] scsi: ufs: L2P map management for HPB read


> +       if (!ufshpb_is_hpb_rsp_valid(hba, lrbp, rsp_field))
> +               return;
> +
> +       hpb->stats.rb_noti_cnt++;

> +       switch (rsp_field->hpb_op) {
> +       case HPB_RSP_NONE:
> +               /* nothing to do */
> +               break;
Maybe checks this too in ufshpb_is_hpb_rsp_valid

> +       case HPB_RSP_REQ_REGION_UPDATE:
> +               WARN_ON(data_seg_len != DEV_DATA_SEG_LEN);
> +               ufshpb_rsp_req_region_update(hpb, rsp_field);
> +               break;
> +       case HPB_RSP_DEV_RESET:
> +               dev_warn(&hpb->sdev_ufs_lu->sdev_dev,
> +                        "UFS device lost HPB information during PM.\n");
> +               break;
> +       default:
> +               dev_notice(&hpb->sdev_ufs_lu->sdev_dev,
> +                          "hpb_op is not available: %d\n",
> +                          rsp_field->hpb_op);
> +               break;
> +       }
> +}