From: Łukasz Bartosik Date: Tue, 30 Dec 2025 18:32:37 +0000 (-0500) Subject: xhci: dbgtty: fix device unregister: fixup X-Git-Tag: v6.12.64~75 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e750e2f2a2dd2e03985965cbef2bed3b4537e69e;p=thirdparty%2Fkernel%2Fstable.git xhci: dbgtty: fix device unregister: fixup [ 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 Fixes: 1f73b8b56cf3 ("xhci: dbgtty: fix device unregister") Signed-off-by: Łukasz Bartosik Link: https://patch.msgid.link/20251127111644.3161386-1-ukaszb@google.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/host/xhci-dbgtty.c b/drivers/usb/host/xhci-dbgtty.c index 349931a80cc84..54b68ce8f2f54 100644 --- a/drivers/usb/host/xhci-dbgtty.c +++ b/drivers/usb/host/xhci-dbgtty.c @@ -522,7 +522,7 @@ static void xhci_dbc_tty_unregister_device(struct xhci_dbc *dbc) * 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);