From d6c53c0e9bd0a83f9f9ddbc9fd80141a54d83896 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 3 Jan 2013 15:53:05 +0100 Subject: TTY: move low_latency to tty_port One point is to have less places where we actually need tty pointer. The other is that low_latency is bound to buffer processing and buffers are now in tty_port. So it makes sense to move low_latency to tty_port too. Signed-off-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- drivers/net/caif/caif_serial.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/caif') diff --git a/drivers/net/caif/caif_serial.c b/drivers/net/caif/caif_serial.c index 5de74e762021..666891a9a248 100644 --- a/drivers/net/caif/caif_serial.c +++ b/drivers/net/caif/caif_serial.c @@ -91,7 +91,7 @@ static inline void update_tty_status(struct ser_device *ser) ser->tty->hw_stopped << 4 | ser->tty->flow_stopped << 3 | ser->tty->packet << 2 | - ser->tty->low_latency << 1 | + ser->tty->port->low_latency << 1 | ser->tty->warned; } static inline void debugfs_init(struct ser_device *ser, struct tty_struct *tty) -- cgit v1.2.3 From 4f73bc4dd3e8563ef4109f293a092820dff66d92 Mon Sep 17 00:00:00 2001 From: Joe Millenbach Date: Thu, 17 Jan 2013 22:44:22 -0800 Subject: tty: Added a CONFIG_TTY option to allow removal of TTY The option allows you to remove TTY and compile without errors. This saves space on systems that won't support TTY interfaces anyway. bloat-o-meter output is below. The bulk of this patch consists of Kconfig changes adding "depends on TTY" to various serial devices and similar drivers that require the TTY layer. Ideally, these dependencies would occur on a common intermediate symbol such as SERIO, but most drivers "select SERIO" rather than "depends on SERIO", and "select" does not respect dependencies. bloat-o-meter output comparing our previous minimal to new minimal by removing TTY. The list is filtered to not show removed entries with awk '$3 != "-"' as the list was very long. add/remove: 0/226 grow/shrink: 2/14 up/down: 6/-35356 (-35350) function old new delta chr_dev_init 166 170 +4 allow_signal 80 82 +2 static.__warned 143 142 -1 disallow_signal 63 62 -1 __set_special_pids 95 94 -1 unregister_console 126 121 -5 start_kernel 546 541 -5 register_console 593 588 -5 copy_from_user 45 40 -5 sys_setsid 128 120 -8 sys_vhangup 32 19 -13 do_exit 1543 1526 -17 bitmap_zero 60 40 -20 arch_local_irq_save 137 117 -20 release_task 674 652 -22 static.spin_unlock_irqrestore 308 260 -48 Signed-off-by: Joe Millenbach Reviewed-by: Jamey Sharp Reviewed-by: Josh Triplett Signed-off-by: Greg Kroah-Hartman --- drivers/net/caif/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/caif') diff --git a/drivers/net/caif/Kconfig b/drivers/net/caif/Kconfig index abf4d7a9dcce..60c2142373c9 100644 --- a/drivers/net/caif/Kconfig +++ b/drivers/net/caif/Kconfig @@ -6,7 +6,7 @@ comment "CAIF transport drivers" config CAIF_TTY tristate "CAIF TTY transport driver" - depends on CAIF + depends on CAIF && TTY default n ---help--- The CAIF TTY transport driver is a Line Discipline (ldisc) -- cgit v1.2.3