USB-serial: pl2303: add space/mark parity

The device supports it, so why not use it ? Works fine !

Signed-off-by: Frank Schaefer <schaefer.frank@gmx.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 14 insertions, 4 deletions

diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index 82055b07e02c..6ed33c7e53e2 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -636,11 +636,21 @@ static void pl2303_set_termios(struct tty_struct *tty,
                 /* For reference buf[5]=3 is mark parity */
                 /* For reference buf[5]=4 is space parity */
                 if (cflag & PARODD) {
-                        buf[5] = 1;
-                        dbg("%s - parity = odd", __func__);
+                        if (cflag & CMSPAR) {
+                                buf[5] = 3;
+                                dbg("%s - parity = mark", __func__);
+                        } else {
+                                buf[5] = 1;
+                                dbg("%s - parity = odd", __func__);
+                        }
                 } else {
-                        buf[5] = 2;
-                        dbg("%s - parity = even", __func__);
+                        if (cflag & CMSPAR) {
+                                buf[5] = 4;
+                                dbg("%s - parity = space", __func__);
+                        } else {
+                                buf[5] = 2;
+                                dbg("%s - parity = even", __func__);
+                        }
                 }
         } else {
                 buf[5] = 0;