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38adbc54ce
linux/drivers/tty
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Michael Spang 38adbc54ce serial: samsung: Avoid waiting forever for TX ready 
The no_console_suspend option allows the console to write to the UART
during early resume, before the serial port itself is resumed. Such
writes hang indefinitely waiting for TX ready.

This adds a check to the console putchar function to drop characters
instead of hanging if the port hasn't been initialized. That way, we
can use no_console_suspend without risk of hanging.

Signed-off-by: Michael Spang <spang@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-28 16:04:19 -07:00
..
hvc TTY: add tty_port_tty_wakeup helper 2013-03-18 16:19:45 -07:00
ipwireless tty: ipwireless: Remove redundant NULL check before kfree 2013-03-15 13:58:32 -07:00
serial serial: samsung: Avoid waiting forever for TX ready 2013-03-28 16:04:19 -07:00
vt driver: tty: vt: remove cast for kmalloc return value 2013-03-18 17:09:37 -07:00
amiserial.c TTY: amiserial, use module_platform_driver_probe() 2013-03-15 13:55:23 -07:00
bfin_jtag_comm.c TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
cyclades.c TTY: add tty_port_tty_hangup helper 2013-03-18 16:24:29 -07:00
ehv_bytechan.c TTY: add tty_port_tty_wakeup helper 2013-03-18 16:19:45 -07:00
goldfish.c goldfish: move to tty_port for flip buffers 2013-01-25 08:09:38 -08:00
isicom.c TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
Kconfig tty: metag_da: Add metag DA TTY driver 2013-02-06 11:10:17 -08:00
Makefile tty: metag_da: Add metag DA TTY driver 2013-02-06 11:10:17 -08:00
metag_da.c tty: metag_da: avoid getting tty kref in dashtty_timer() 2013-02-06 11:10:17 -08:00
moxa.c TTY: add tty_port_tty_hangup helper 2013-03-18 16:24:29 -07:00
moxa.h
mxser.c TTY: fix DTR not being dropped on hang up 2013-03-18 16:27:53 -07:00
mxser.h
n_gsm.c TTY: fix DTR not being dropped on hang up 2013-03-18 16:27:53 -07:00
n_hdlc.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
n_r3964.c tty: localise the lock 2012-08-10 12:55:47 -07:00
n_tracerouter.c
n_tracesink.c
n_tracesink.h
n_tty.c n_tty: Fully initialize ldisc before restarting buffer work 2013-03-18 16:44:01 -07:00
nozomi.c TTY: add tty_port_tty_hangup helper 2013-03-18 16:24:29 -07:00
pty.c pty: Remove redundant itty reset 2013-03-15 13:00:48 -07:00
rocket_int.h
rocket.c TTY: cleanup tty->hw_stopped uses 2013-03-18 16:24:30 -07:00
rocket.h
synclink_gt.c TTY: synclink: Convert + to | for bit operations 2013-01-30 00:09:58 -05:00
synclink.c TTY: synclink, remove superfluous check 2013-03-18 16:17:20 -07:00
synclinkmp.c TTY: synclink: Convert + to | for bit operations 2013-01-30 00:09:58 -05:00
sysrq.c sysrq: fix inconstistent help message of sysrq key 2013-03-15 14:06:45 -07:00
tty_audit.c TTY: audit, stop accessing tty->icount 2012-10-22 16:50:54 -07:00
tty_buffer.c TTY: disable debugging warning 2013-03-04 16:52:09 +08:00
tty_io.c tty: tty_vhangup_session can be static 2013-03-25 14:07:34 -07:00
tty_ioctl.c tty: Fix recursive deadlock in tty_perform_flush() 2013-03-18 16:52:24 -07:00
tty_ldisc.c tty: Remove redundant tty_wait_until_sent() 2013-03-18 16:48:42 -07:00
tty_mutex.c tty: tty_mutex.c: Fixed coding style warning (using printk) 2012-10-24 11:34:51 -07:00
tty_port.c tty: Complete ownership transfer of flip buffers 2013-03-18 16:44:02 -07:00