linux-kernel - Re: [PATCH v2] usb: core: reduce power-on-good delay time of root hub

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Message-ID: <c639c965-5231-b745-7b59-476877202e0c@gmail.com>
Date:   Mon, 1 Nov 2021 11:33:16 +0800
From:   "Walt Jr. Brake" <mr.yming81@...il.com>
To:     chunfeng.yun@...iatek.com
Cc:     eddie.hung@...iatek.com, gregkh@...uxfoundation.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mediatek@...ts.infradead.org, linux-usb@...r.kernel.org,
        matthias.bgg@...il.com, nishadkamdar@...il.com,
        stern@...land.harvard.edu
Subject: Re: [PATCH v2] usb: core: reduce power-on-good delay time of root hub

Three month ago, My USB 3.1 device cannot be detected after upgrade 
kernel from version 5.10.41 to 5.10.42.

And I found some other people ran into the same issue:

https://forum.manjaro.org/t/kernel-5-10-59-doesnt-detect-a-connected-usb-external-disk/79320

https://forum.manjaro.org/t/how-to-make-active-usb-hub-work-in-manjaro/84548

Two days ago, I try to fix the issue myself, and I found out that it was 
cause by this patch. After revert this patch, my USB 3.1 device can be 
detect again.

I have already file a bug on here: 
https://bugzilla.kernel.org/show_bug.cgi?id=214875.