[PATCH] pl2303: use divisors for unsupported baud rates

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This change has been tested to work with PL-2303HX at 115200, 500000,
1000000, 2000000, 2500000, 3000000 and 4000000 baud rates.

Signed-off-by: Lauri Hintsala <lauri.hintsala@xxxxxxxxxxxx>
---
CC: Johan Hovold <jhovold@xxxxxxxxx>
CC: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
CC: linux-usb@xxxxxxxxxxxxxxx

 drivers/usb/serial/pl2303.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index b3d5a35..51f2420 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -394,16 +394,14 @@ static void pl2303_encode_baud_rate(struct tty_struct *tty,
 	if (spriv->type->max_baud_rate)
 		baud = min_t(speed_t, baud, spriv->type->max_baud_rate);
 	/*
-	 * Set baud rate to nearest supported value.
-	 *
-	 * NOTE: Baud rate 500k can only be set using divisors.
+	 * Use direct method for supported baud rates, otherwise use divisors.
 	 */
 	baud_sup = pl2303_get_supported_baud_rate(baud);
 
-	if (baud == 500000)
-		baud = pl2303_encode_baud_rate_divisor(buf, baud);
+	if (baud == baud_sup)
+		baud = pl2303_encode_baud_rate_direct(buf, baud);
 	else
-		baud = pl2303_encode_baud_rate_direct(buf, baud_sup);
+		baud = pl2303_encode_baud_rate_divisor(buf, baud);
 
 	/* Save resulting baud rate */
 	tty_encode_baud_rate(tty, baud, baud);
-- 
1.9.1

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