Commit 7b08579f authored Jun 06, 2017 by Johan Hovold Committed by Greg Kroah-Hartman Jun 13, 2017

tty: drop unused alt_speed from tty_struct



Drop the now unused alt_speed field from struct tty_struct.

Setting an alt_speed using the ASYNC_SPD flags has been deprecated since
v2.1.69, and has been broken for all tty drivers but serial-core since
v3.10 and commit 6865ff22 ("TTY: do not warn about setting speed via
SPD_*") without anyone noticing.

Note that serial-core still supports changing speed using TIOCSSERIAL
and SPD flags (including "alt-speeds"), but also warns about it being
deprecated since pre-git.

Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 41b4d581

include/linux/tty.h

+0 −1

Original line number	Diff line number	Diff line
		@@ -316,7 +316,6 @@ struct tty_struct {

		struct tty_struct *link;
		struct fasync_struct *fasync;
		int alt_speed; /* For magic substitution of 38400 bps */
		wait_queue_head_t write_wait;
		wait_queue_head_t read_wait;
		struct work_struct hangup_work;

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