From: Greg KH <gregkh@linuxfoundation.org>
To: Haowen Bai <calvin.bai@ugreen.com>
Cc: mathias.nyman@linux.intel.com, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] usb: pci-quirks: abort xHCI handoff if MMIO is inaccessible
Date: Wed, 28 Oct 2026 04:57:49 +0100 [thread overview]
Message-ID: <2026102811-septic-confront-ec64@gregkh> (raw)
In-Reply-To: <20261028021226.1314753-1-calvin.bai@ugreen.com>
On Wed, Oct 28, 2026 at 10:12:26AM +0800, Haowen Bai wrote:
> 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.
I'll get to it after -rc1 is out, thanks.
greg k-h
prev parent reply other threads:[~2026-10-28 3:57 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-06 16:26 [PATCH] usb: pci-quirks: abort xHCI handoff if MMIO is inaccessible 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
2026-10-28 3:57 ` Greg KH [this message]
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