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path: root/drivers/usb/serial/cp210x.c
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Diffstat (limited to 'drivers/usb/serial/cp210x.c')
-rw-r--r--drivers/usb/serial/cp210x.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index cbcaddb1bf4c..60993dc7eb8d 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -202,6 +202,8 @@ static struct usb_serial_driver cp210x_device = {
#define CP210X_EMBED_EVENTS 0x15
#define CP210X_GET_EVENTSTATE 0x16
#define CP210X_SET_CHARS 0x19
+#define CP210X_GET_BAUDRATE 0x1D
+#define CP210X_SET_BAUDRATE 0x1E
/* CP210X_IFC_ENABLE */
#define UART_ENABLE 0x0001
@@ -456,10 +458,7 @@ static void cp210x_get_termios_port(struct usb_serial_port *port,
dbg("%s - port %d", __func__, port->number);
- cp210x_get_config(port, CP210X_GET_BAUDDIV, &baud, 2);
- /* Convert to baudrate */
- if (baud)
- baud = cp210x_quantise_baudrate((BAUD_RATE_GEN_FREQ + baud/2)/ baud);
+ cp210x_get_config(port, CP210X_GET_BAUDRATE, &baud, 4);
dbg("%s - baud rate = %d", __func__, baud);
*baudp = baud;
@@ -594,8 +593,7 @@ static void cp210x_set_termios(struct tty_struct *tty,
if (baud != tty_termios_baud_rate(old_termios) && baud != 0) {
dbg("%s - Setting baud rate to %d baud", __func__,
baud);
- if (cp210x_set_config_single(port, CP210X_SET_BAUDDIV,
- ((BAUD_RATE_GEN_FREQ + baud/2) / baud))) {
+ if (cp210x_set_config(port, CP210X_SET_BAUDRATE, &baud, 4)) {
dbg("Baud rate requested not supported by device");
baud = tty_termios_baud_rate(old_termios);
}