Re: [PATCH v3 1/1] scsi: ufs: core: add device level exception support

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To: Peter Wang (王信友) <peter.wang@xxxxxxxxxxxx>, "avri.altman@xxxxxxx" <avri.altman@xxxxxxx>, "quic_cang@xxxxxxxxxxx" <quic_cang@xxxxxxxxxxx>, "quic_nitirawa@xxxxxxxxxxx" <quic_nitirawa@xxxxxxxxxxx>, "manivannan.sadhasivam@xxxxxxxxxx" <manivannan.sadhasivam@xxxxxxxxxx>, "bvanassche@xxxxxxx" <bvanassche@xxxxxxx>, "adrian.hunter@xxxxxxxxx" <adrian.hunter@xxxxxxxxx>, "minwoo.im@xxxxxxxxxxx" <minwoo.im@xxxxxxxxxxx>, "martin.petersen@xxxxxxxxxx" <martin.petersen@xxxxxxxxxx>
Subject: Re: [PATCH v3 1/1] scsi: ufs: core: add device level exception support
From: "Bao D. Nguyen" <quic_nguyenb@xxxxxxxxxxx>
Date: Wed, 19 Mar 2025 02:01:07 -0700
Cc: "beanhuo@xxxxxxxxxx" <beanhuo@xxxxxxxxxx>, "ebiggers@xxxxxxxxxx" <ebiggers@xxxxxxxxxx>, "gwendal@xxxxxxxxxxxx" <gwendal@xxxxxxxxxxxx>, "linux-scsi@xxxxxxxxxxxxxxx" <linux-scsi@xxxxxxxxxxxxxxx>, "AngeloGioacchino Del Regno" <angelogioacchino.delregno@xxxxxxxxxxxxx>, "quic_ziqichen@xxxxxxxxxxx" <quic_ziqichen@xxxxxxxxxxx>, "alim.akhtar@xxxxxxxxxxx" <alim.akhtar@xxxxxxxxxxx>, "keosung.park@xxxxxxxxxxx" <keosung.park@xxxxxxxxxxx>, "viro@xxxxxxxxxxxxxxxxxx" <viro@xxxxxxxxxxxxxxxxxx>, "matthias.bgg@xxxxxxxxx" <matthias.bgg@xxxxxxxxx>, "James.Bottomley@xxxxxxxxxxxxxxxxxxxxx" <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "linux-mediatek@xxxxxxxxxxxxxxxxxxx" <linux-mediatek@xxxxxxxxxxxxxxxxxxx>, "linux-arm-kernel@xxxxxxxxxxxxxxxxxxx" <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>
In-reply-to: <61570104d58cef22716fefe459c0c45670108aad.camel@mediatek.com>
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On 3/19/2025 12:56 AM, Peter Wang (王信友) wrote:

Hi Bao,

Could use atomic_t for counter protect?

Hi Peter,

Are you suggesting to convert the dev_lvl_exception_count type from u32to atomic_t type? Because the value of dev_lvl_exception_count isreturned to the user space via the device_lvl_exception_count_show()using the sysfs_emit() function, keeping the dev_lvl_exception_count asu32 data type probably works better in terms of the format.


Thanks, Bao

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References:
- [PATCH v3 1/1] scsi: ufs: core: add device level exception support
  - From: Bao D. Nguyen
- Re: [PATCH v3 1/1] scsi: ufs: core: add device level exception support
  - From: Peter Wang (王信友)

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