6.6-stable review patch. If anyone has any objections, please let me know.
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From: Łukasz Bartosik ukaszb@chromium.org
[ Upstream commit 74098cc06e753d3ffd8398b040a3a1dfb65260c0 ]
This fixup replaces tty_vhangup() call with call to tty_port_tty_vhangup(). Both calls hangup tty device synchronously however tty_port_tty_vhangup() increases reference count during the hangup operation using scoped_guard(tty_port_tty).
Cc: stable stable@kernel.org Fixes: 1f73b8b56cf3 ("xhci: dbgtty: fix device unregister") Signed-off-by: Łukasz Bartosik ukaszb@chromium.org Link: https://patch.msgid.link/20251127111644.3161386-1-ukaszb@google.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/host/xhci-dbgtty.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/host/xhci-dbgtty.c +++ b/drivers/usb/host/xhci-dbgtty.c @@ -522,7 +522,7 @@ static void xhci_dbc_tty_unregister_devi * Hang up the TTY. This wakes up any blocked * writers and causes subsequent writes to fail. */ - tty_vhangup(port->port.tty); + tty_port_tty_vhangup(&port->port);
tty_unregister_device(dbc_tty_driver, port->minor); xhci_dbc_tty_exit_port(port);