From: Can Guo <cang@codeaurora.org>
To: Adrian Hunter <adrian.hunter@intel.com>
Cc: asutoshd@codeaurora.org, nguyenb@codeaurora.org,
hongwus@codeaurora.org, ziqichen@codeaurora.org,
linux-scsi@vger.kernel.org, kernel-team@android.com,
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>,
Satya Tangirala <satyat@google.com>,
Kiwoong Kim <kwmad.kim@samsung.com>,
Bart Van Assche <bvanassche@acm.org>,
open list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v4 02/10] scsi: ufs: Add flags pm_op_in_progress and is_sys_suspended
Date: Thu, 24 Jun 2021 10:05:47 +0800 [thread overview]
Message-ID: <646da45daab10c264c4c8671744a07df@codeaurora.org> (raw)
In-Reply-To: <d9da89ac-cb40-d11b-5af3-5c948eb9b927@intel.com>
Hi Adrian,
On 2021-06-23 20:33, Adrian Hunter wrote:
> On 23/06/21 10:35 am, Can Guo wrote:
>> Add flags pm_op_in_progress and is_sys_suspended to track the status
>> of hba
>> runtime and system suspend/resume operations.
>>
>> Signed-off-by: Can Guo <cang@codeaurora.org>
>> ---
>> drivers/scsi/ufs/ufshcd.c | 12 +++++++++++-
>> drivers/scsi/ufs/ufshcd.h | 4 ++++
>> 2 files changed, 15 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
>> index c40ba1d..abe5f2d 100644
>> --- a/drivers/scsi/ufs/ufshcd.c
>> +++ b/drivers/scsi/ufs/ufshcd.c
>> @@ -551,6 +551,8 @@ static void ufshcd_print_host_state(struct ufs_hba
>> *hba)
>> hba->curr_dev_pwr_mode, hba->uic_link_state);
>> dev_err(hba->dev, "wlu_pm_op_in_progress=%d,
>> is_wlu_sys_suspended=%d\n",
>> hba->wlu_pm_op_in_progress, hba->is_wlu_sys_suspended);
>> + dev_err(hba->dev, "pm_op_in_progress=%d, is_sys_suspended=%d\n",
>> + hba->pm_op_in_progress, hba->is_sys_suspended);
>> dev_err(hba->dev, "Auto BKOPS=%d, Host self-block=%d\n",
>> hba->auto_bkops_enabled, hba->host->host_self_blocked);
>> dev_err(hba->dev, "Clk gate=%d\n", hba->clk_gating.state);
>> @@ -9141,6 +9143,8 @@ static int ufshcd_suspend(struct ufs_hba *hba)
>>
>> if (!hba->is_powered)
>> return 0;
>> +
>> + hba->pm_op_in_progress = true;
>> /*
>> * Disable the host irq as host controller as there won't be any
>> * host controller transaction expected till resume.
> */
> ufshcd_disable_irq(hba);
> ret = ufshcd_setup_clocks(hba, false);
> if (ret) {
> ufshcd_enable_irq(hba);
>
> Is "hba->pm_op_in_progress = false" needed here?
>
> return ret;
> }
>
>
You are right, I missed it. Will add it in next ver. Thanks!
Regards,
Can Guo.
>
>> @@ -9160,6 +9164,7 @@ static int ufshcd_suspend(struct ufs_hba *hba)
>> ufshcd_vreg_set_lpm(hba);
>> /* Put the host controller in low power mode if possible */
>> ufshcd_hba_vreg_set_lpm(hba);
>> + hba->pm_op_in_progress = false;
>> return ret;
>> }
>>
>> @@ -9179,6 +9184,7 @@ static int ufshcd_resume(struct ufs_hba *hba)
>> if (!hba->is_powered)
>> return 0;
>>
>> + hba->pm_op_in_progress = true;
>> ufshcd_hba_vreg_set_hpm(hba);
>> ret = ufshcd_vreg_set_hpm(hba);
>> if (ret)
>> @@ -9198,6 +9204,7 @@ static int ufshcd_resume(struct ufs_hba *hba)
>> out:
>> if (ret)
>> ufshcd_update_evt_hist(hba, UFS_EVT_RESUME_ERR, (u32)ret);
>> + hba->pm_op_in_progress = false;
>> return ret;
>> }
>>
>> @@ -9222,6 +9229,8 @@ int ufshcd_system_suspend(struct ufs_hba *hba)
>> trace_ufshcd_system_suspend(dev_name(hba->dev), ret,
>> ktime_to_us(ktime_sub(ktime_get(), start)),
>> hba->curr_dev_pwr_mode, hba->uic_link_state);
>> + if (!ret)
>> + hba->is_sys_suspended = true;
>> return ret;
>> }
>> EXPORT_SYMBOL(ufshcd_system_suspend);
>> @@ -9247,7 +9256,8 @@ int ufshcd_system_resume(struct ufs_hba *hba)
>> trace_ufshcd_system_resume(dev_name(hba->dev), ret,
>> ktime_to_us(ktime_sub(ktime_get(), start)),
>> hba->curr_dev_pwr_mode, hba->uic_link_state);
>> -
>> + if (!ret)
>> + hba->is_sys_suspended = false;
>> return ret;
>> }
>> EXPORT_SYMBOL(ufshcd_system_resume);
>> 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;
>>
next prev parent reply other threads:[~2021-06-24 2:05 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1624433711-9339-1-git-send-email-cang@codeaurora.org>
2021-06-23 7:35 ` [PATCH v4 01/10] scsi: ufs: Rename flags pm_op_in_progress and is_sys_suspended Can Guo
2021-06-23 20:05 ` Bart Van Assche
2021-06-23 20:57 ` Bart Van Assche
2021-06-24 2:02 ` Can Guo
2021-06-24 2:34 ` Can Guo
2021-06-24 6:04 ` Adrian Hunter
2021-06-23 20:42 ` Bjorn Andersson
2021-06-23 22:41 ` Bart Van Assche
2021-06-24 2:04 ` Can Guo
2021-06-24 17:32 ` Bart Van Assche
2021-06-24 23:42 ` Bart Van Assche
2021-06-28 7:01 ` Can Guo
2021-06-28 7:35 ` Can Guo
2021-06-28 17:07 ` Bart Van Assche
2021-06-23 7:35 ` [PATCH v4 02/10] scsi: ufs: Add " Can Guo
2021-06-23 12:33 ` Adrian Hunter
2021-06-24 2:05 ` Can Guo [this message]
2021-06-23 20:59 ` Bart Van Assche
2021-06-24 2:07 ` Can Guo
2021-06-24 17:35 ` Bart Van Assche
2021-06-28 7:11 ` Can Guo
2021-06-23 7:35 ` [PATCH v4 03/10] scsi: ufs: Update the return value of supplier pm ops Can Guo
2021-06-23 21:08 ` Bart Van Assche
2021-06-24 2:11 ` Can Guo
2021-06-23 7:35 ` [PATCH v4 04/10] scsi: ufs: Enable IRQ after enabling clocks in error handling preparation Can Guo
2021-06-23 21:20 ` Bart Van Assche
2021-06-23 7:35 ` [PATCH 05/10] scsi: ufs: Complete the cmd before returning in queuecommand Can Guo
2021-06-23 7:39 ` Can Guo
2021-06-23 7:35 ` [PATCH v4 05/10] scsi: ufs: Remove a redundant tag check in ufshcd_queuecommand() Can Guo
2021-06-23 21:24 ` Bart Van Assche
2021-06-23 7:35 ` [PATCH v4 06/10] scsi: ufs: Remove host_sem used in suspend/resume Can Guo
2021-06-23 14:30 ` Adrian Hunter
2021-06-24 2:16 ` Can Guo
2021-06-24 5:52 ` Adrian Hunter
2021-06-24 6:12 ` Can Guo
2021-06-24 6:23 ` Adrian Hunter
2021-06-24 6:31 ` Can Guo
2021-06-24 10:04 ` Adrian Hunter
2021-06-28 7:26 ` Can Guo
2021-07-07 19:04 ` Adrian Hunter
2021-06-24 17:11 ` Bart Van Assche
2021-06-28 8:17 ` Can Guo
2021-06-28 17:31 ` Bart Van Assche
2021-06-29 6:23 ` Can Guo
2021-06-29 18:01 ` Bart Van Assche
2021-06-29 21:50 ` Can Guo
2021-06-23 7:35 ` [PATCH v4 07/10] scsi: ufs: Simplify error handling preparation Can Guo
2021-06-23 21:30 ` Bart Van Assche
2021-06-23 7:35 ` [PATCH v4 08/10] scsi: ufs: Update ufshcd_recover_pm_error() Can Guo
2021-06-23 7:35 ` [PATCH v4 09/10] scsi: ufs: Update the fast abort path in ufshcd_abort() for PM requests Can Guo
2021-06-23 21:33 ` Bart Van Assche
2021-06-24 4:16 ` Can Guo
2021-06-24 16:57 ` Bart Van Assche
2021-06-23 7:35 ` [PATCH v4 10/10] scsi: ufs: Apply more limitations to user access Can Guo
2021-06-23 21:51 ` Bart Van Assche
2021-06-24 2:23 ` Can Guo
2021-06-24 22:25 ` Bart Van Assche
2021-06-28 7:16 ` Can Guo
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