From: Bart Van Assche <bvanassche@acm.org>
To: "Peter Wang (王信友)" <peter.wang@mediatek.com>,
"beanhuo@micron.com" <beanhuo@micron.com>,
"avri.altman@wdc.com" <avri.altman@wdc.com>,
"neil.armstrong@linaro.org" <neil.armstrong@linaro.org>,
"quic_cang@quicinc.com" <quic_cang@quicinc.com>,
"quic_nitirawa@quicinc.com" <quic_nitirawa@quicinc.com>,
"quic_nguyenb@quicinc.com" <quic_nguyenb@quicinc.com>,
"quic_ziqichen@quicinc.com" <quic_ziqichen@quicinc.com>,
"luca.weiss@fairphone.com" <luca.weiss@fairphone.com>,
"konrad.dybcio@oss.qualcomm.com" <konrad.dybcio@oss.qualcomm.com>,
"mani@kernel.org" <mani@kernel.org>,
"martin.petersen@oracle.com" <martin.petersen@oracle.com>,
"quic_rampraka@quicinc.com" <quic_rampraka@quicinc.com>,
"junwoo80.lee@samsung.com" <junwoo80.lee@samsung.com>
Cc: "linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"Tze-nan Wu (吳澤南)" <Tze-nan.Wu@mediatek.com>,
"linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>,
"manivannan.sadhasivam@linaro.org"
<manivannan.sadhasivam@linaro.org>,
"alim.akhtar@samsung.com" <alim.akhtar@samsung.com>,
"James.Bottomley@HansenPartnership.com"
<James.Bottomley@HansenPartnership.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v4] scsi: ufs: core: Don't perform UFS clkscale if host asyn scan in progress
Date: Wed, 30 Jul 2025 08:42:15 -0700 [thread overview]
Message-ID: <3ad6282f-bb41-42c2-9dda-337a0e0be68a@acm.org> (raw)
In-Reply-To: <ea382e7c-2436-4e82-a2b5-d5b7737b8828@acm.org>
On 7/30/25 8:37 AM, Bart Van Assche wrote:
> On 7/30/25 5:55 AM, Peter Wang (王信友) wrote:
>> However, in theory, this issue should still be solvable
>> without using a lock.
>> Another idea is to only start ufshcd_devfreq_init
>> when shost->async_scan = 0.
>
> Does the lockdep complaint mentioned in this email thread occur on
> multiple platforms or only on MediaTek platforms? I don't see any
> lockdep complaints with Martin's SCSI for-next branch on my
> development platform. If this warning only occurs on MediaTek
> platforms, why to modify the UFSHCI core driver to eliminate this
> lockdep complaint?
Answering my own question: clock scaling is not enabled on my
development platform and that's why I'm not seeing this lockdep
complaint.
Bart.
next prev parent reply other threads:[~2025-07-30 15:42 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-22 8:12 [PATCH v4] scsi: ufs: core: Don't perform UFS clkscale if host asyn scan in progress Ziqi Chen
2025-05-27 21:24 ` Bart Van Assche
2025-05-28 1:58 ` Martin K. Petersen
2025-06-03 2:35 ` Martin K. Petersen
2025-07-25 9:13 ` Peter Wang (王信友)
2025-07-25 14:54 ` Bart Van Assche
2025-07-28 6:34 ` Peter Wang (王信友)
2025-07-29 3:02 ` Ziqi Chen
2025-07-30 12:55 ` Peter Wang (王信友)
2025-07-30 15:37 ` Bart Van Assche
2025-07-30 15:42 ` Bart Van Assche [this message]
2025-07-30 15:50 ` Bart Van Assche
2025-08-04 7:54 ` Ziqi Chen
2025-08-04 9:41 ` Peter Wang (王信友)
2025-08-04 12:43 ` Peter Wang (王信友)
2025-08-05 6:03 ` Ziqi Chen
2025-08-05 7:39 ` Peter Wang (王信友)
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