USB: serial: Note mos7480 and option don't lock modem status
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index aeeb9cb..0b29c53 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -1722,6 +1722,7 @@
if (mos7840_port == NULL)
return -ENODEV;
+ /* FIXME: What locks the port registers ? */
mcr = mos7840_port->shadowMCR;
if (clear & TIOCM_RTS)
mcr &= ~MCR_RTS;