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[104.39.213.233]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-9121a62b783sm91141946d6.23.2026.09.14.18.20.22 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Mon, 14 Sep 2026 18:20:23 -0700 (PDT) From: Myeonghun Pak To: Alan Stern , Greg Kroah-Hartman Cc: Krzysztof Kozlowski , Peter Griffin , Alim Akhtar , Patrice Chotard , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH 2/4] usb: ohci-s3c2410: disable controller wakeup on removal Date: Mon, 14 Sep 2026 21:20:09 -0400 Message-ID: <20260915012011.61874-3-mhun512@gmail.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20260915012011.61874-1-mhun512@gmail.com> References: <20260915012011.61874-1-mhun512@gmail.com> Precedence: bulk X-Mailing-List: linux-samsung-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Probe enables controller wakeup after the OHCI core marks controllers with RemoteWakeupConnected as wakeup-capable. Removal does not undo this, so the wakeup source can remain attached after driver unbind. Disable controller wakeup after removing the HCD. This issue was identified during our ongoing static-analysis research while reviewing kernel code. Fixes: a6eeeb9f45b5 ("USB: Update USB default wakeup settings") Cc: stable@vger.kernel.org Assisted-by: LLM Co-developed-by: Ijae Kim Signed-off-by: Ijae Kim Signed-off-by: Myeonghun Pak --- drivers/usb/host/ohci-s3c2410.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/host/ohci-s3c2410.c b/drivers/usb/host/ohci-s3c2410.c --- a/drivers/usb/host/ohci-s3c2410.c +++ b/drivers/usb/host/ohci-s3c2410.c @@ -335,6 +335,7 @@ struct usb_hcd *hcd = platform_get_drvdata(dev); usb_remove_hcd(hcd); + device_wakeup_disable(hcd->self.controller); s3c2410_stop_hc(dev); usb_put_hcd(hcd); }