提交 e2984494 编写于 作者: A Alan Cox 提交者: Greg Kroah-Hartman

USB: serial: Note mos7480 and option don't lock modem status

Signed-off-by: NAlan Cox <alan@redhat.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
上级 9b0f2582
......@@ -1722,6 +1722,7 @@ static int mos7840_tiocmset(struct usb_serial_port *port, struct file *file,
if (mos7840_port == NULL)
return -ENODEV;
/* FIXME: What locks the port registers ? */
mcr = mos7840_port->shadowMCR;
if (clear & TIOCM_RTS)
mcr &= ~MCR_RTS;
......
......@@ -458,6 +458,7 @@ static int option_tiocmset(struct usb_serial_port *port, struct file *file,
portdata = usb_get_serial_port_data(port);
/* FIXME: what locks portdata fields ? */
if (set & TIOCM_RTS)
portdata->rts_state = 1;
if (set & TIOCM_DTR)
......
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