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Subject: Re: [PATCH v4 01/10] scsi: ufs: Rename flags pm_op_in_progress and
 is_sys_suspended
To:     Can Guo <cang@codeaurora.org>, asutoshd@codeaurora.org,
        nguyenb@codeaurora.org, hongwus@codeaurora.org,
        ziqichen@codeaurora.org, linux-scsi@vger.kernel.org,
        kernel-team@android.com
Cc:     Andy Gross <agross@kernel.org>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Alim Akhtar <alim.akhtar@samsung.com>,
        Avri Altman <avri.altman@wdc.com>,
        "James E.J. Bottomley" <jejb@linux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@oracle.com>,
        Stanley Chu <stanley.chu@mediatek.com>,
        Bean Huo <beanhuo@micron.com>,
        Jaegeuk Kim <jaegeuk@kernel.org>,
        Adrian Hunter <adrian.hunter@intel.com>,
        Kiwoong Kim <kwmad.kim@samsung.com>,
        Satya Tangirala <satyat@google.com>,
        "open list:ARM/QUALCOMM SUPPORT" <linux-arm-msm@vger.kernel.org>,
        open list <linux-kernel@vger.kernel.org>
References: <1624433711-9339-1-git-send-email-cang@codeaurora.org>
 <1624433711-9339-2-git-send-email-cang@codeaurora.org>
From:   Bart Van Assche <bvanassche@acm.org>
Message-ID: <71e7d714-8cb9-1f57-9035-e43c147b5c61@acm.org>
Date:   Thu, 24 Jun 2021 10:32:34 -0700
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On 6/23/21 12:35 AM, Can Guo wrote:
> Rename pm_op_in_progress and is_sys_suspended to wlu_pm_op_in_progress and
> is_wlu_sys_suspended accordingly.

Can the pm_op_in_progress variable be removed if the UFS driver checks whether
q->rpm_status == RPM_SUSPENDING || q->rpm_status == RPM_RESUMING instead of
using pm_op_in_progress? The fewer state variables we maintain the lower the
chance that these are inconsistent or incorrect. See also block/blk-pm.c for
the code that sets q->rpm_status.

Thanks,

Bart.