linux-kernel - Re: [PATCH 1/2] scsi: pm80xx: Add fatal error check for pm8001_phy

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Message-ID: <CAMGffE=mf_9ik6Sc19rQu_cC6rTacF6-Bd1xFYbgumoXnZsgVQ@mail.gmail.com>
Date:   Wed, 24 May 2023 08:34:52 +0200
From:   Jinpu Wang <jinpu.wang@...os.com>
To:     Pranav Prasad <pranavpp@...gle.com>
Cc:     Jack Wang <jinpu.wang@...ud.ionos.com>,
        "James E . J . Bottomley" <jejb@...ux.ibm.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Changyuan Lyu <changyuanl@...gle.com>
Subject: Re: [PATCH 1/2] scsi: pm80xx: Add fatal error check for pm8001_phy_control()

On Tue, May 23, 2023 at 11:41 PM Pranav Prasad <pranavpp@...gle.com> wrote:
>
> From: Changyuan Lyu <changyuanl@...gle.com>
>
> This patch adds a fatal error check for the pm8001_phy_control() function.
>
> Signed-off-by: Changyuan Lyu <changyuanl@...gle.com>
> Signed-off-by: Pranav Prasad <pranavpp@...gle.com>
Acked-by: Jack Wang <jinpu.wang@...os.com>
> ---
>  drivers/scsi/pm8001/pm8001_sas.c | 10 ++++++++++
>  1 file changed, 10 insertions(+)
>
> diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c
> index e5673c774f66..b153f0966e5d 100644
> --- a/drivers/scsi/pm8001/pm8001_sas.c
> +++ b/drivers/scsi/pm8001/pm8001_sas.c
> @@ -167,6 +167,16 @@ int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
>         pm8001_ha = sas_phy->ha->lldd_ha;
>         phy = &pm8001_ha->phy[phy_id];
>         pm8001_ha->phy[phy_id].enable_completion = &completion;
> +
> +       if (PM8001_CHIP_DISP->fatal_errors(pm8001_ha)) {
> +               /* If the controller is in fatal error state,
> +                *  we will not get a response from the controller
> +                */
> +               pm8001_dbg(pm8001_ha, FAIL,
> +                               "Phy control failed due to fatal errors\n");
> +               return -EFAULT;
> +       }
> +
>         switch (func) {
>         case PHY_FUNC_SET_LINK_RATE:
>                 rates = funcdata;
> --
> 2.40.1.698.g37aff9b760-goog
>