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

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Message-ID:
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Date: Sun, 23 Feb 2025 06:50:44 +0000
From: Avri Altman <Avri.Altman@...disk.com>
To: "Bao D. Nguyen" <quic_nguyenb@...cinc.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

> +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.

Thanks,
Avri