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Commit 7b08579f authored by Johan Hovold's avatar Johan Hovold Committed by Greg Kroah-Hartman
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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: default avatarJohan Hovold <johan@kernel.org>
Reviewed-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: default avatarAlan Cox <alan@linux.intel.com>
Signed-off-by: default avatarGreg 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;