Commit 54dc5792 authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman
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Revert "USB: pl2303: restrict the divisor based baud rate encoding method to the "HX" chip type"

This reverts commit b8bdad60


Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
they cause regressions on some versions of the chip.  This will all be
revisited for later kernel versions when we can figure out how to handle
this in a way that does not break working devices.
Reported-by: default avatarMika Westerberg <>
Cc: Frank Schäfer <>
Acked-by: default avatarJohan Hovold <>
Signed-off-by: default avatarGreg Kroah-Hartman <>
parent 1796a228
......@@ -305,14 +305,10 @@ static void pl2303_encode_baudrate(struct tty_struct *tty,
if (spriv->type != HX)
baud = min_t(int, baud, 1228800);
if (spriv->type != HX || baud <= 115200) {
/* Direct (standard) baud rate encoding method */
if (baud <= 115200) {
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]
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