X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=drivers%2Fusb%2Fserial%2Fch341.c;h=ba28fdc9ccd2f589a2ec5038616dc91795fd9757;hb=26ab705396b65a469233a8327ecb51b8aebb6be0;hp=6b252ceb39a828b69b29b78b2dfdfdf572a88bbd;hpb=ebf8889bd1fe3615991ff4494635d237280652a2;p=karo-tx-linux.git

diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c
index 6b252ceb39a8..ba28fdc9ccd2 100644
--- a/drivers/usb/serial/ch341.c
+++ b/drivers/usb/serial/ch341.c
@@ -130,7 +130,7 @@ static int ch341_get_status(struct usb_device *dev)
 		return -ENOMEM;
 
 	r = ch341_control_in(dev, 0x95, 0x0706, 0, buffer, size);
-	if ( r < 0)
+	if (r < 0)
 		goto out;
 
 	/* Not having the datasheet for the CH341, we ignore the bytes returned
@@ -272,9 +272,6 @@ static void ch341_set_termios(struct usb_serial_port *port,
 
 	dbg("ch341_set_termios()");
 
-	if (!tty || !tty->termios)
-		return;
-
 	baud_rate = tty_get_baud_rate(tty);
 
 	switch (baud_rate) {
@@ -299,6 +296,11 @@ static void ch341_set_termios(struct usb_serial_port *port,
 	 * (cflag & PARENB) : parity {NONE, EVEN, ODD}
 	 * (cflag & CSTOPB) : stop bits [1, 2]
 	 */
+
+	 /* Copy back the old hardware settings */
+	 tty_termios_copy_hw(tty->termios, old_termios);
+	 /* And re-encode with the new baud */
+	 tty_encode_baud_rate(tty, baud_rate, baud_rate);
 }
 
 static struct usb_driver ch341_driver = {
@@ -316,9 +318,6 @@ static struct usb_serial_driver ch341_device = {
 	},
 	.id_table         = id_table,
 	.usb_driver       = &ch341_driver,
-	.num_interrupt_in = NUM_DONT_CARE,
-	.num_bulk_in      = 1,
-	.num_bulk_out     = 1,
 	.num_ports        = 1,
 	.open             = ch341_open,
 	.set_termios      = ch341_set_termios,