linux-kernel - Re: [PATCH v4 6/8] scsi: ufs: Delete is_init_prefetch from struct ufs

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Message-ID: <34128bac-3811-16c1-ea6a-57c52cd70982@codeaurora.org>
Date:   Mon, 20 Jan 2020 12:43:09 -0800
From:   "Asutosh Das (asd)" <asutoshd@...eaurora.org>
To:     Bean Huo <huobean@...il.com>, alim.akhtar@...sung.com,
        avri.altman@....com, jejb@...ux.ibm.com,
        martin.petersen@...cle.com, stanley.chu@...iatek.com,
        beanhuo@...ron.com, bvanassche@....org, tomas.winkler@...el.com,
        cang@...eaurora.org
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 6/8] scsi: ufs: Delete is_init_prefetch from struct
 ufs_hba

On 1/20/2020 5:08 AM, Bean Huo wrote:
> From: Bean Huo <beanhuo@...ron.com>
> 
> Without variable is_init_prefetch, the current logic can guarantee
> ufshcd_init_icc_levels() will execute only once, delete it now.
> 
> Signed-off-by: Bean Huo <beanhuo@...ron.com>
> ---

Reviewed-by: Asutosh Das <asutoshd@...eaurora.org>

>   drivers/scsi/ufs/ufshcd.c | 5 +----
>   drivers/scsi/ufs/ufshcd.h | 2 --
>   2 files changed, 1 insertion(+), 6 deletions(-)
> 
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index 3d3289bb3cad..0c859f239d1c 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -6967,8 +6967,7 @@ static int ufshcd_add_lus(struct ufs_hba *hba)
>   {
>   	int ret;
>   
> -	if (!hba->is_init_prefetch)
> -		ufshcd_init_icc_levels(hba);
> +	ufshcd_init_icc_levels(hba);
>   
>   	/* Add required well known logical units to scsi mid layer */
>   	ret = ufshcd_scsi_add_wlus(hba);
> @@ -6994,8 +6993,6 @@ static int ufshcd_add_lus(struct ufs_hba *hba)
>   	scsi_scan_host(hba->host);
>   	pm_runtime_put_sync(hba->dev);
>   
> -	if (!hba->is_init_prefetch)
> -		hba->is_init_prefetch = true;
>   out:
>   	return ret;
>   }
> diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
> index 32b6714f25a5..5c65d9fdeb14 100644
> --- a/drivers/scsi/ufs/ufshcd.h
> +++ b/drivers/scsi/ufs/ufshcd.h
> @@ -501,7 +501,6 @@ struct ufs_stats {
>    * @intr_mask: Interrupt Mask Bits
>    * @ee_ctrl_mask: Exception event control mask
>    * @is_powered: flag to check if HBA is powered
> - * @is_init_prefetch: flag to check if data was pre-fetched in initialization
>    * @init_prefetch_data: data pre-fetched during initialization
>    * @eh_work: Worker to handle UFS errors that require s/w attention
>    * @eeh_work: Worker to handle exception events
> @@ -652,7 +651,6 @@ struct ufs_hba {
>   	u32 intr_mask;
>   	u16 ee_ctrl_mask;
>   	bool is_powered;
> -	bool is_init_prefetch;
>   	struct ufs_init_prefetch init_prefetch_data;
>   
>   	/* Work Queues */
> 


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