From: Myeonghun Pak <mhun512@gmail.com>
To: Alan Stern <stern@rowland.harvard.edu>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Krzysztof Kozlowski <krzk@kernel.org>,
Peter Griffin <peter.griffin@linaro.org>,
Alim Akhtar <alim.akhtar@samsung.com>,
Patrice Chotard <patrice.chotard@foss.st.com>,
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 3/4] usb: ohci-spear: disable controller wakeup on removal
Date: Mon, 14 Sep 2026 21:20:10 -0400 [thread overview]
Message-ID: <20260915012011.61874-4-mhun512@gmail.com> (raw)
In-Reply-To: <20260915012011.61874-1-mhun512@gmail.com>
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 <ae878000@gmail.com>
Signed-off-by: Ijae Kim <ae878000@gmail.com>
Signed-off-by: Myeonghun Pak <mhun512@gmail.com>
---
drivers/usb/host/ohci-spear.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/usb/host/ohci-spear.c b/drivers/usb/host/ohci-spear.c
--- a/drivers/usb/host/ohci-spear.c
+++ b/drivers/usb/host/ohci-spear.c
@@ -103,6 +103,7 @@
struct spear_ohci *sohci_p = to_spear_ohci(hcd);
usb_remove_hcd(hcd);
+ device_wakeup_disable(hcd->self.controller);
clk_disable_unprepare(sohci_p->clk);
usb_put_hcd(hcd);
next prev parent reply other threads:[~2026-09-15 1:20 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-15 1:20 [PATCH 0/4] usb: ohci: Balance controller wakeup on cleanup Myeonghun Pak
2026-09-15 1:20 ` [PATCH 1/4] usb: ohci-da8xx: disable " Myeonghun Pak
2026-09-15 1:20 ` [PATCH 2/4] usb: ohci-s3c2410: disable controller wakeup on removal Myeonghun Pak
2026-09-15 1:20 ` Myeonghun Pak [this message]
2026-09-15 1:20 ` [PATCH 4/4] usb: ohci-st: " Myeonghun Pak
2026-09-15 9:34 ` Patrice CHOTARD
2026-09-15 9:34 ` Patrice CHOTARD
2026-09-15 15:01 ` [PATCH 0/4] usb: ohci: Balance controller wakeup on cleanup Alan Stern
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