linux-stable/drivers/serial/jsm
Paul Fulghum 817d6d3bce [PATCH] remove TTY_DONT_FLIP
Remove TTY_DONT_FLIP tty flag.  This flag was introduced in 2.1.X kernels
to prevent the N_TTY line discipline functions read_chan() and
n_tty_receive_buf() from running at the same time.  2.2.15 introduced
tty->read_lock to protect access to the N_TTY read buffer, which is the
only state requiring protection between these two functions.

The current TTY_DONT_FLIP implementation is broken for SMP, and is not
universally honored by drivers that send data directly to the line
discipline receive_buf function.

Because TTY_DONT_FLIP is not necessary, is broken in implementation, and is
not universally honored, it is removed.

Signed-off-by: Paul Fulghum <paulkf@microgate.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 14:59:05 -07:00
..
jsm.h fix the email address of Wendy Xiong 2006-04-01 01:04:20 +02:00
jsm_driver.c fix the email address of Wendy Xiong 2006-04-01 01:04:20 +02:00
jsm_neo.c fix the email address of Wendy Xiong 2006-04-01 01:04:20 +02:00
jsm_tty.c [PATCH] remove TTY_DONT_FLIP 2006-06-28 14:59:05 -07:00
Makefile Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00