linux-kernel - Re: [PATCH 06/16] scsi: libsas: Add sas

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Date:   Fri, 28 Jan 2022 16:06:22 +0800
From:   "chenxiang (M)" <chenxiang66@...ilicon.com>
To:     John Garry <john.garry@...wei.com>,
        "jejb@...ux.ibm.com" <jejb@...ux.ibm.com>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        "artur.paszkiewicz@...el.com" <artur.paszkiewicz@...el.com>,
        "jinpu.wang@...ud.ionos.com" <jinpu.wang@...ud.ionos.com>,
        "Ajish.Koshy@...rochip.com" <Ajish.Koshy@...rochip.com>
CC:     yanaijie <yanaijie@...wei.com>,
        "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        Linuxarm <linuxarm@...wei.com>,
        "liuqi (BA)" <liuqi115@...wei.com>,
        "Viswas.G@...rochip.com" <Viswas.G@...rochip.com>,
        "damien.lemoal@...nsource.wdc.com" <damien.lemoal@...nsource.wdc.com>
Subject: Re: [PATCH 06/16] scsi: libsas: Add sas_task.tmf



在 2022/1/28 0:01, John Garry 写道:
> On 27/01/2022 12:55, chenxiang (M) wrote:
>>> -    slot->tmf = tmf;
>>> -    slot->is_internal = tmf;
>> In kernel 5.17-rc1(with above two lines on), it seems there is a issue
>> for ata disk reset command as tmf = null while it is internal command.
>
> ok, thanks for the notice. Would this fix it:

Yes, it should fix it, and i just notice that it seems solve the issue 
in the last patch of this patchset (including this fix in the last patch).

>
> diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c 
> b/drivers/scsi/hisi_sas/hisi_sas_main.c
> index a05ec7aece5a..0e12c9329ee5 100644
> --- a/drivers/scsi/hisi_sas/hisi_sas_main.c
> +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
> @@ -427,8 +427,6 @@ void hisi_sas_task_deliver(struct hisi_hba *hisi_hba,
>      cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
>      slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot];
>
> -    slot->tmf = tmf;
> -    slot->is_internal = tmf;
>      task->lldd_task = slot;
>
>      memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
> @@ -1380,12 +1378,13 @@ static int hisi_sas_softreset_ata_disk(struct 
> domain_device *device)
>      struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
>      struct device *dev = hisi_hba->dev;
>      int s = sizeof(struct host_to_dev_fis);
> +    struct hisi_sas_tmf_task tmf = {};
>
>      ata_for_each_link(link, ap, EDGE) {
>          int pmp = sata_srst_pmp(link);
>
>          hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis);
> -        rc = hisi_sas_exec_internal_tmf_task(device, fis, s, NULL);
> +        rc = hisi_sas_exec_internal_tmf_task(device, fis, s, &tmf);
>          if (rc != TMF_RESP_FUNC_COMPLETE)
>              break;
>      }
> @@ -1396,7 +1395,7 @@ static int hisi_sas_softreset_ata_disk(struct 
> domain_device *device)
>
>              hisi_sas_fill_ata_reset_cmd(link->device, 0, pmp, fis);
>              rc = hisi_sas_exec_internal_tmf_task(device, fis,
> -                                 s, NULL);
> +                                 s, &tmf);
>              if (rc != TMF_RESP_FUNC_COMPLETE)
>                  dev_err(dev, "ata disk %016llx de-reset failed\n",
>                      SAS_ADDR(device->sas_addr));
>
>>
>>>        task->lldd_task = slot;
>
>
>
> .
>