linux-kernel - Re: [PATCH v4 02/10] scsi: ufs: Add flags pm_op_in_progress and is_sys

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Message-ID: <e728719d-8e43-0e5a-af7a-14196dafa2a9@acm.org>
Date:   Wed, 23 Jun 2021 13:59:16 -0700
From:   Bart Van Assche <bvanassche@....org>
To:     Can Guo <cang@...eaurora.org>, asutoshd@...eaurora.org,
        nguyenb@...eaurora.org, hongwus@...eaurora.org,
        ziqichen@...eaurora.org, linux-scsi@...r.kernel.org,
        kernel-team@...roid.com
Cc:     Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Stanley Chu <stanley.chu@...iatek.com>,
        Bean Huo <beanhuo@...ron.com>,
        Jaegeuk Kim <jaegeuk@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Satya Tangirala <satyat@...gle.com>,
        Kiwoong Kim <kwmad.kim@...sung.com>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 02/10] scsi: ufs: Add flags pm_op_in_progress and
 is_sys_suspended

On 6/23/21 12:35 AM, Can Guo wrote:
> diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
> index 93aeeb3..1e7fe73 100644
> --- a/drivers/scsi/ufs/ufshcd.h
> +++ b/drivers/scsi/ufs/ufshcd.h
> @@ -754,6 +754,8 @@ struct ufs_hba {
>  	struct device_attribute spm_lvl_attr;
>  	/* A flag to tell whether __ufshcd_wl_suspend/resume() is in progress */
>  	bool wlu_pm_op_in_progress;
> +	/* A flag to tell whether ufshcd_suspend/resume() is in progress */
> +	bool pm_op_in_progress;
>  
>  	/* Auto-Hibernate Idle Timer register value */
>  	u32 ahit;
> @@ -841,6 +843,8 @@ struct ufs_hba {
>  	struct ufs_clk_scaling clk_scaling;
>  	/* A flag to tell whether the UFS device W-LU is system suspended */
>  	bool is_wlu_sys_suspended;
> +	/* A flag to tell whether hba is system suspended */
> +	bool is_sys_suspended;
>  
>  	enum bkops_status urgent_bkops_lvl;
>  	bool is_urgent_bkops_lvl_checked;

It is not yet clear to me whether we really need these new member
variables. If these are retained, please rename pm_op_in_progress into
platform_pm_op_in_progress and is_sys_suspended into
platform_is_sys_suspended.

Thanks,

Bart.