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Message-ID: <96ea8d7a-2dca-76b5-4f41-1de3c211d35c@kernel.org>
Date:   Wed, 24 May 2023 16:53:28 +0900
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Subject: Re: [PATCH 1/2] scsi: pm80xx: Add fatal error check for
 pm8001_phy_control()
Content-Language: en-US
To:     Pranav Prasad <pranavpp@google.com>,
        Jack Wang <jinpu.wang@cloud.ionos.com>,
        "James E . J . Bottomley" <jejb@linux.ibm.com>,
        "Martin K . Petersen" <martin.petersen@oracle.com>
Cc:     linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
        Changyuan Lyu <changyuanl@google.com>
References: <20230523214127.4006891-1-pranavpp@google.com>
 <20230523214127.4006891-2-pranavpp@google.com>
From:   Damien Le Moal <dlemoal@kernel.org>
Organization: Western Digital Research
In-Reply-To: <20230523214127.4006891-2-pranavpp@google.com>
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On 5/24/23 06:41, Pranav Prasad wrote:
> From: Changyuan Lyu <changyuanl@google.com>
> 
> This patch adds a fatal error check for the pm8001_phy_control() function.
> 
> Signed-off-by: Changyuan Lyu <changyuanl@google.com>
> Signed-off-by: Pranav Prasad <pranavpp@google.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
> +		 */

Multi-line comment style: must start with an empty "/*" line.

> +		pm8001_dbg(pm8001_ha, FAIL,
> +				"Phy control failed due to fatal errors\n");

Please align the args together.

> +		return -EFAULT;
> +	}
> +
>  	switch (func) {
>  	case PHY_FUNC_SET_LINK_RATE:
>  		rates = funcdata;

-- 
Damien Le Moal
Western Digital Research