linux-kernel - Re: [PATCH v3 2/2] scsi: ufs: core: reflect function execution result in return

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Message-ID: <420692d5-d968-4e47-9eaf-14d574b62593@acm.org>
Date: Tue, 15 Oct 2024 11:13:43 -0700
From: Bart Van Assche <bvanassche@....org>
To: SEO HOYOUNG <hy50.seo@...sung.com>, linux-scsi@...r.kernel.org,
 linux-kernel@...r.kernel.org, alim.akhtar@...sung.com, avri.altman@....com,
 jejb@...ux.ibm.com, martin.petersen@...cle.com, beanhuo@...ron.com,
 kwangwon.min@...sung.com, kwmad.kim@...sung.com, sh425.lee@...sung.com,
 quic_nguyenb@...cinc.com, cpgs@...sung.com, h10.kim@...sung.com,
 grant.jung@...sung.com, junwoo80.lee@...sung.com, wkon.kim@...sung.com
Subject: Re: [PATCH v3 2/2] scsi: ufs: core: reflect function execution result
 in return

On 10/10/24 12:52 AM, SEO HOYOUNG wrote:
> If an error is returned in the power mode function, it is returned and
> modified to cause failure in the UFS linkup.
> If it is an asymmetric connected lane, the UFS init can fail because it is
> an incorrect situation.

Why is this an incorrect situation? If ufshcd_get_max_pwr_mode() fails,
won't communication succeed with a lower power mode than maximum power?

Thanks,

Bart.