linux-kernel - Re: [PATCH v4 01/10] scsi: ufs: Rename flags pm_op_in_progress and is_sys

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Message-ID: <ba8c618cfce28a7a12d1a1a8ce3dc44c@codeaurora.org>
Date:   Mon, 28 Jun 2021 15:35:12 +0800
From:   Can Guo <cang@...eaurora.org>
To:     Bart Van Assche <bvanassche@....org>
Cc:     asutoshd@...eaurora.org, nguyenb@...eaurora.org,
        hongwus@...eaurora.org, ziqichen@...eaurora.org,
        linux-scsi@...r.kernel.org, kernel-team@...roid.com,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        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>,
        Kiwoong Kim <kwmad.kim@...sung.com>,
        Satya Tangirala <satyat@...gle.com>,
        "open list:ARM/QUALCOMM SUPPORT" <linux-arm-msm@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 01/10] scsi: ufs: Rename flags pm_op_in_progress and
 is_sys_suspended

On 2021-06-28 15:01, Can Guo wrote:
> On 2021-06-25 07:42, Bart Van Assche wrote:
>> 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 is_wlu_sys_suspended member variable be removed by checking
>> dev->power.is_suspended where dev represents the WLUN?
>> 
> 
> No, PM set dev->power.is_suspended to "false" even the device failed 
> resuming,
> while is_wlu_sys_suspended can be used to tell that.

FYI,

892 /**
893  * device_resume - Execute "resume" callbacks for given device.
894  * @dev: Device to handle.
895  * @state: PM transition of the system being carried out.
896  * @async: If true, the device is being resumed asynchronously.
897  */
898 static int device_resume(struct device *dev, pm_message_t state, 
bool async)
...
967  End:
968 	error = dpm_run_callback(callback, dev, state, info);
969 	dev->power.is_suspended = false;
...

Can Guo.

> 
> Thanks,
> 
> Can Guo.
> 
>> Thanks,
>> 
>> Bart.