Re: [PATCH] xhci: Reset controller on xhci shutdown

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In reply to: Michal Pecio: "Re: [PATCH] xhci: Reset controller on xhci shutdown"
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From: Wen Xiong

Date: Fri Oct 02 2026 - 10:13:48 EST

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