forked from Minki/linux
Revert "USB: pl2303: restrict the divisor based baud rate encoding method to the "HX" chip type"
This reverts commit b8bdad6082
.
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: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
Acked-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
1796a22876
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@ -305,14 +305,10 @@ static void pl2303_encode_baudrate(struct tty_struct *tty,
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if (spriv->type != HX)
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baud = min_t(int, baud, 1228800);
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if (spriv->type != HX || baud <= 115200) {
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/* Direct (standard) baud rate encoding method */
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if (baud <= 115200) {
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put_unaligned_le32(baud, buf);
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} else {
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/*
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* NOTE: it's not clear if the type_0/1 chips
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* support this method
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*
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* Apparently the formula for higher speeds is:
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* baudrate = 12M * 32 / (2^buf[1]) / buf[0]
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*/
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