1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index 1e6de4cd079d..244820193e10 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -305,10 +305,14 @@ static void pl2303_encode_baudrate(struct tty_struct *tty,
         if (spriv->type != HX)
                 baud = min_t(int, baud, 1228800);
 
-        if (baud <= 115200) {
+        if (spriv->type != HX || baud <= 115200) {
+                /* Direct (standard) baud rate encoding method */
                 put_unaligned_le32(baud, buf);
         } else {
                 /*
+                 * NOTE: it's not clear if the type_0/1 chips
+                 * support this method
+                 *
                  * Apparently the formula for higher speeds is:
                  * baudrate = 12M * 32 / (2^buf[1]) / buf[0]
                  */