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4f98d46751
linux/drivers/tty
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Peter Hurley 4f98d46751 tty: Complete ownership transfer of flip buffers 
Waiting for buffer work to complete is not required for safely
performing changes to the line discipline, once the line discipline
is halted. The buffer work routine, flush_to_ldisc(), will be
unable to acquire an ldisc ref and all existing references were
waited until released (so it can't already have one).

Ensure running buffer work which may reference the soon-to-be-gone
tty completes and any buffer work running after this point retrieves
a NULL tty.

Also, ensure all buffer work is cancelled on port destruction.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-18 16:44:02 -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 tty: ifx6x60: Remove unused suspend/resume callbacks 2013-03-18 16:29:29 -07:00
vt Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
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 tty: move a number of tty drivers from drivers/char/ to drivers/tty/ 2011-02-22 16:14:56 -08:00
mxser.c TTY: fix DTR not being dropped on hang up 2013-03-18 16:27:53 -07:00
mxser.h Fix common misspellings 2011-03-31 11:26:23 -03:00
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_tracerouter and n_tracesink ldisc additions. 2011-05-13 16:31:00 -07:00
n_tracesink.c n_tracerouter and n_tracesink ldisc additions. 2011-05-13 16:31:00 -07:00
n_tracesink.h n_tracerouter and n_tracesink ldisc additions. 2011-05-13 16:31:00 -07:00
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 tty: move a number of tty drivers from drivers/char/ to drivers/tty/ 2011-02-22 16:14:56 -08:00
rocket.c TTY: cleanup tty->hw_stopped uses 2013-03-18 16:24:30 -07:00
rocket.h tty: move a number of tty drivers from drivers/char/ to drivers/tty/ 2011-02-22 16:14:56 -08:00
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 pps: Move timestamp read into PPS code proper 2013-02-13 10:13:58 -08:00
tty_io.c tty: Complete ownership transfer of flip buffers 2013-03-18 16:44:02 -07:00
tty_ioctl.c TTY: do not warn about setting speed via SPD_* 2013-03-18 16:19:05 -07:00
tty_ldisc.c tty: Complete ownership transfer of flip buffers 2013-03-18 16:44:02 -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