linux-kernel - Re: [RFC v1 1/1] scsi: ufs: core: Add device level exeption support

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Message-ID: <afffd4d2-0dd7-d81c-bc10-6b4195050495@quicinc.com>
Date: Mon, 24 Feb 2025 11:44:25 -0800
From: "Bao D. Nguyen" <quic_nguyenb@...cinc.com>
To: Avri Altman <Avri.Altman@...disk.com>,
        "quic_cang@...cinc.com"
	<quic_cang@...cinc.com>,
        "quic_nitirawa@...cinc.com"
	<quic_nitirawa@...cinc.com>,
        "bvanassche@....org" <bvanassche@....org>,
        "avri.altman@....com" <avri.altman@....com>,
        "peter.wang@...iatek.com"
	<peter.wang@...iatek.com>,
        "manivannan.sadhasivam@...aro.org"
	<manivannan.sadhasivam@...aro.org>,
        "minwoo.im@...sung.com"
	<minwoo.im@...sung.com>,
        "adrian.hunter@...el.com" <adrian.hunter@...el.com>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>
CC: "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        Alim Akhtar
	<alim.akhtar@...sung.com>,
        "James E.J. Bottomley"
	<James.Bottomley@...senPartnership.com>,
        Keoseong Park
	<keosung.park@...sung.com>,
        Bean Huo <beanhuo@...ron.com>, Al Viro
	<viro@...iv.linux.org.uk>,
        Gwendal Grignou <gwendal@...omium.org>,
        "Andrew
 Halaney" <ahalaney@...hat.com>,
        Eric Biggers <ebiggers@...gle.com>,
        open list
	<linux-kernel@...r.kernel.org>
Subject: Re: [RFC v1 1/1] scsi: ufs: core: Add device level exeption support

On 2/22/2025 10:50 PM, Avri Altman wrote:
>> +static void ufshcd_device_lvl_exception_event_handler(struct ufs_hba
>> +*hba) {
>> +	u64 *exception_id;
>> +	int err;
>> +
>> +	hba->dev_lvl_exception_count++;
>> +	exception_id = &hba->dev_lvl_exception_id;
>> +	err = ufshcd_read_device_lvl_exception_id(hba, exception_id);
> Why is it important to read qDeviceLevelExceptionID immediately?
> Why can't it be added as part of the standard attributes sysfs ABI,
> To be available for read once the exception occurred.

We can do that Avri.

Thanks, Bao