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Sun, 15 Nov 2026 00:06:01 -0800 (PST) Received: from claudebox.iyengar.cloud ([50.39.139.68]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ee0f868203sm24927565ad.49.2026.11.15.00.05.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 15 Nov 2026 00:06:00 -0800 (PST) From: Arun Iyengar To: Joonhoe Kim <26rote@gmail.com> Cc: Thinh.Nguyen@synopsys.com, gregkh@linuxfoundation.org, mathias.nyman@intel.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] usb: dwc3: tell xHCI that it lost its state when the core is powered off In-Reply-To: <20261112141512.1840-1-26rote@gmail.com> References: <20261112141512.1840-1-26rote@gmail.com> Date: Sun, 15 Nov 2026 08:05:58 -0000 Message-ID: <179472995896.3849457.7552548813153786316@gmail.com> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Tested on an Orange Pi 5 (RK3588S, dwc3 not wakeup-capable), 7.3-based kernel with KASAN and a local dwc3 s2idle change set to keep today's power-off: 10/10 s2idle cycles reset the controller ("root hub lost power") and brought a USB 3 disk back; a cycle with the core kept powered kept its state. No xHC resume error or splat. Tested-by: Arun Iyengar