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From: Wen Xiong <wenxiong@linux.ibm.com>
To: Michal Pecio <michal.pecio@gmail.com>
Cc: mathias.nyman@intel.com, gregkh@linuxfoundation.org,
	linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
	stable@vger.kernel.org, wenxiong@us.ibm.com,
	Brian King <brking@linux.vnet.ibm.com>,
	Samuel Mendoza-Jonas <sam@mendozajonas.com>,
	Joel Stanley <joel@jms.id.au>
Subject: Re: [PATCH] xhci: Reset controller on xhci shutdown
Date: Fri, 02 Oct 2026 09:05:36 -0500	[thread overview]
Message-ID: <561d22493c3d078b26f547dd8f6f6f46@linux.ibm.com> (raw)
In-Reply-To: <20261002102931.3cb06009.michal.pecio@gmail.com>

On 2026-10-02 03:29, Michal Pecio wrote:
> What exactly happens after kexec?
> Why a PCI reset in particular?
> Are we sure it's not a bug elsewhere?
> 
After executing a kexec boots on a bare metal machine, the USB 
controller disappeared.
With a PCI reset, the USB controller is showed up after a kexec kernel.

Thanks,
Wendy

  reply	other threads:[~2026-10-02 14:05 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-01 22:25 wenxiong
2026-10-01 22:40 ` Mathias Nyman
2026-10-02 14:08   ` Wen Xiong
2026-10-02  8:29 ` Michal Pecio
2026-10-02 14:05   ` Wen Xiong [this message]
2026-10-02 14:18     ` Michal Pecio

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