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usb: ohci-st: disable controller wakeup on removal

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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: d115837259 ("usb: host: ohci-st: Add OHCI driver support for ST STB devices")
Cc: stable <stable@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>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://patch.msgid.link/20260915012011.61874-5-mhun512@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Myeonghun Pak 2026-09-14 21:20:11 -04:00 committed by Greg Kroah-Hartman
parent b1b0f8bdbb
commit 08b2ccd7eb
1 changed files with 1 additions and 0 deletions
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1
drivers/usb/host/ohci-st.c
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@ -235,6 +235,7 @@ static void st_ohci_platform_remove(struct platform_device *dev)
int clk;
usb_remove_hcd(hcd);
device_wakeup_disable(hcd->self.controller);
if (pdata->power_off)
pdata->power_off(dev);