tty: rocket: drop broken alt-speed support
Setting an alt_speed using the ROCKET_SPD flags has been deprecated since v2.1.69, and has been broken since commit 6865ff22 ("TTY: do not warn about setting speed via SPD_*") without anyone noticing. To make things worse commit 6df3526b ("rocket: first pass at termios reporting") in v2.6.25 started reporting back the actual baud rate used, something which also required 38400 to again be set whenever changing a SPD flag. Drop the broken alt-speed handling altogether, and add a ratelimited warning about using TIOCCSERIAL to change speed as being deprecated. Note that the rocket driver has never supported using a custom divisor (ASYNC_SPD_CUST equivalent). Signed-off-by: NJohan Hovold <johan@kernel.org> Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: NAlan Cox <alan@linux.intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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