Message-ID: <58244768-33ad-21d6-d88d-93e7fdd0ba27@quicinc.com>
Date:   Thu, 23 Feb 2023 18:32:45 +0800
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Subject: Re: [PATCH v2 3/7] scsi: ufs: core: Fix mcq nr_hw_queues
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To:     Po-Wen Kao <powen.kao@mediatek.com>, <linux-scsi@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-mediatek@lists.infradead.org>,
        Alim Akhtar <alim.akhtar@samsung.com>,
        Avri Altman <avri.altman@wdc.com>,
        Bart Van Assche <bvanassche@acm.org>,
        "James E.J. Bottomley" <jejb@linux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@oracle.com>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        <quic_ziqichen@quicinc.com>
CC:     <wsd_upstream@mediatek.com>, <peter.wang@mediatek.com>,
        <stanley.chu@mediatek.com>, <alice.chao@mediatek.com>,
        <naomi.chu@mediatek.com>, <chun-hung.wu@mediatek.com>,
        <cc.chou@mediatek.com>, <eddie.huang@mediatek.com>,
        <mason.zhang@mediatek.com>, <chaotian.jing@mediatek.com>,
        <jiajie.hao@mediatek.com>, <quic_cang@quicinc.com>,
        <quic_asutoshd@quicinc.com>
References: <20230222030427.957-1-powen.kao@mediatek.com>
 <20230222030427.957-4-powen.kao@mediatek.com>
From:   Ziqi Chen <quic_ziqichen@quicinc.com>
In-Reply-To: <20230222030427.957-4-powen.kao@mediatek.com>
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Hi Po-Wen,

On 2/22/2023 11:04 AM, Po-Wen Kao wrote:
> Need to add one to MAXQ to obtain number of hardware queue.
>
> Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com>
> ---
>   drivers/ufs/core/ufs-mcq.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c
> index a39746b2a8be..5d5bc0bc6e88 100644
> --- a/drivers/ufs/core/ufs-mcq.c
> +++ b/drivers/ufs/core/ufs-mcq.c
> @@ -150,7 +150,7 @@ static int ufshcd_mcq_config_nr_queues(struct ufs_hba *hba)
>   	u32 hba_maxq, rem, tot_queues;
>   	struct Scsi_Host *host = hba->host;
>   
> -	hba_maxq = FIELD_GET(MAX_QUEUE_SUP, hba->mcq_capabilities);
> +	hba_maxq = FIELD_GET(MAX_QUEUE_SUP, hba->mcq_capabilities) + 1 ;
Can we add one line comment why need to  add one to hba_maxq  here or in 
commit message?
>   
>   	tot_queues = UFS_MCQ_NUM_DEV_CMD_QUEUES + read_queues + poll_queues +
>   			rw_queues;

Best Regards.

Ziqi