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Mon, 5 Oct 2026 13:01:46 +0000 (GMT) Received: from ltc.linux.ibm.com (unknown [9.5.196.140]) by smtpav03.dal12v.mail.ibm.com (Postfix) with ESMTP; Mon, 5 Oct 2026 13:01:46 +0000 (GMT) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Date: Mon, 05 Oct 2026 08:01:46 -0500 From: Wen Xiong To: Michal Pecio 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 , Samuel Mendoza-Jonas , Joel Stanley Subject: Re: [PATCH] xhci: Reset controller on xhci shutdown In-Reply-To: <20261002161828.365ff859.michal.pecio@gmail.com> References: <20261001222527.11742-1-wenxiong@linux.ibm.com> <20261002102931.3cb06009.michal.pecio@gmail.com> <561d22493c3d078b26f547dd8f6f6f46@linux.ibm.com> <20261002161828.365ff859.michal.pecio@gmail.com> Message-ID: <55a53022d1c6f671a3ed549d8cf7cd1a@linux.ibm.com> X-Sender: wenxiong@linux.ibm.com Content-Type: text/plain; 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When executing "kexec -e", saw the error: xhci_hcd 0005:01:00.0: Host halt failed. -110 USB device is still showed up in lspci but lsusb didn't show any USB devices. #lspci|grep USB 0005:01:00.0 USB controller: Texas Instruments TUSB73x0 SuperSpeed USB 3.0 xHCI Host Controller (rev 02) [root@localhost ~]# lsusb looks we saw a frozen USB subsystem during suspend/shutdown. > Is this our problem and not PCI subsystem's? > Are we sure it's not a bug elsewhere? > > (Last time somebody reported issues with kexec, > it turned out to be an obscure Intel IOMMU bug).