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From: Haowen Bai <calvin.bai@ugreen.com>
To: gregkh@linuxfoundation.org
Cc: mathias.nyman@linux.intel.com, linux-usb@vger.kernel.org,
	linux-kernel@vger.kernel.org, Haowen Bai <calvin.bai@ugreen.com>
Subject: Re: [PATCH v2] usb: pci-quirks: abort xHCI handoff if MMIO is inaccessible
Date: Wed, 28 Oct 2026 10:12:26 +0800	[thread overview]
Message-ID: <20261028021226.1314753-1-calvin.bai@ugreen.com> (raw)
In-Reply-To: <2026102749-spender-coke-2fc1@gregkh>

Hi Greg,

> Sorry, but I see no context here at all :(

Sorry for the missing context. The v2 patch is here:

https://patchew.org/linux/02C44DCEA968C75D%2B20260914022743.30852-1-calvin.bai%40ugreen.com/

It makes the xHCI early handoff abort when MMIO reads return all ones,
avoiding prolonged polling and soft lockups during PCI hotplug.

The v2 incorporates Lukas's suggestion to use PCI_POSSIBLE_ERROR()
and carries Mathias's Acked-by.

Could you please take this through your USB tree, or should it go
through Mathias's xHCI tree? I can resend the full patch if needed.

Thanks,
Haowen

  reply	other threads:[~2026-10-28  2:12 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-06 16:26 [PATCH] " Haowen Bai
2026-09-10 13:35 ` Mathias Nyman
2026-09-13 12:53 ` Lukas Wunner
2026-09-14  2:27   ` [PATCH v2] " Haowen Bai
2026-10-27 12:01     ` Haowen Bai
2026-10-27 14:11       ` Greg Kroah-Hartman
2026-10-28  2:12         ` Haowen Bai [this message]
2026-10-28  3:57           ` Greg KH

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