linux-kernel - Re: [PATCH] usb-storage: apply IGNORE

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Message-ID: <20250326082353.3a79aa8a@foxbook>
Date: Wed, 26 Mar 2025 08:23:53 +0100
From: Michał Pecio <michal.pecio@...il.com>
To: dengjie03@...inos.cn
Cc: gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
 linux-usb@...r.kernel.org, stern@...land.harvard.edu,
 usb-storage@...ts.one-eyed-alien.net, xiehongyu1@...inos.cn
Subject: Re: [PATCH] usb-storage: apply IGNORE_UAS for Realtek on RTL9210

> The UAS mode of Realtek USB_HDD is reported
> to fail to work on several platforms with
> the following error message,

Possibly related?
https://github.com/raspberrypi/linux/commit/9d3afd87557637a37135aa6e370dea846b839c2d

An RTL9210 hardware bug with a simple driver workaround, solved
by RPi but never submitted upstream. I guess you could try it.

> [  148.437916][ 22] xhci_hcd 0000:ba:02.0: xHCI host not responding to stop endpoint command.
> [  148.462295][ 22] xhci_hcd 0000:ba:02.0: xHCI host controller not responding, assume dead

That's your host controller crashing, maybe a device bug confused it.
It may be the reason why storage drivers never recover from the error.

Out of curiosity, which HC is doing this?

> then after
> re-connecting the device will be offlined
> and not working at all.

Nothing can possibly work after the above, until xhci_hcd is reloaded.

Regards,
Michal