linux.git/drivers/char/ip2/i2lib.c, branch master

tty: move obsolete and broken tty drivers to drivers/staging/tty/

2011-02-23T00:57:21+00:00

As planned by Arnd Bergmann, this moves the following drivers to the
drivers/staging/tty/ directory where they will be removed after 2.6.41
if no one steps up to claim them.
	epca
	epca
	ip2
	istallion
	riscom8
	serial167
	specialix
	stallion

Cc: Arnd Bergmann 
Cc: Alan Cox 
Cc: Jiri Slaby 
Signed-off-by: Greg Kroah-Hartman

tty: rewrite the ldisc locking

2009-06-11T15:51:01+00:00

There are several pretty much unfixable races in the old ldisc code, especially
with respect to pty behaviour and also to hangup. It's easier to rewrite the
code than simply try and patch it up.

This patch
- splits the ldisc from the tty (so we will be able to refcount it more cleanly
  later)
- introduces a mutex lock for ldisc changing on an active device
- fixes the complete mess that hangup caused
- implements hopefully correct setldisc/close/hangup locking

There are still some problems around pty pairs that have always been there but
at least it is now possible to understand the code and fix further problems.

This fixes the following known bugs
- hang up can leak ldisc references
- hang up may not call open/close on ldisc in a matched way
- pty/tty pairs can deadlock during an ldisc change
- reading the ldisc proc files can cause every ldisc to be loaded

and probably a few other of the mysterious ldisc race reports.

I'm sure it also adds the odd new one.

Signed-off-by: Alan Cox 
Signed-off-by: Linus Torvalds

tty: Ldisc revamp

2008-07-21T00:12:34+00:00

Move the line disciplines towards a conventional ->ops arrangement.  For
the moment the actual 'tty_ldisc' struct in the tty is kept as part of
the tty struct but this can then be changed if it turns out that when it
all settles down we want to refcount ldiscs separately to the tty.

Pull the ldisc code out of /proc and put it with our ldisc code.

Signed-off-by: Alan Cox 
Signed-off-by: Linus Torvalds

Char: ip2, macros cleanup

2008-04-30T15:29:44+00:00

- remove i2os.h -- there was only macro to macro renaming or useless
  stuff
- remove another uselless stuf (NULLFUNC, NULLPTR, YES, NO)
- use outb/inb directly
- use locking functions directly
- don't define another ROUNDUP, use roundup(x, 2) instead
- some comments and whitespace cleanup
- remove some commented crap
- prepend the rest by I2 prefix to not collide with rest of the world
  like in following output (pointed out by akpm)

In file included from drivers/char/ip2/ip2main.c:128:
drivers/char/ip2/i2ellis.h:608:1: warning: "COMPLETE" redefined
In file included from include/net/netns/ipv4.h:8,
                 from include/net/net_namespace.h:13,
                 from include/linux/seq_file.h:7,
                 from include/asm/machdep.h:12,
                 from include/asm/pci.h:17,
                 from include/linux/pci.h:951,
                 from drivers/char/ip2/ip2main.c:95:
include/net/inet_frag.h:28:1: warning: this is the location of the previous definition

Signed-off-by: Jiri Slaby 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Char: ip2, fix sparse warnings

2008-04-02T22:28:19+00:00

Unlock two grabbed locks on some paths.

Signed-off-by: Jiri Slaby 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/char/: Spelling fixes

2008-02-03T15:11:42+00:00

Signed-off-by: Joe Perches 
Signed-off-by: Adrian Bunk

Fix bogus 'inline' in drivers/char/ip2/i2lib.c

2007-02-21T19:18:26+00:00

Not only was the function way too big to be inlined in the first place,
it was used before it was even defined.

Noted-by: Faik Uygur 
Cc: Jiri Slaby 
Signed-off-by: Linus Torvalds

[PATCH] Char: timers cleanup

2007-02-12T17:48:30+00:00

- Use timer macros to set function and data members and to modify
  expiration time.
- Use DEFINE_TIMER for global timers and do not init them at run-time in
  these cases.
- del_timer_sync is common in most cases -- we want to wait for timer
  function if it's still running.

Signed-off-by: Jiri Slaby 
Cc: Dave Airlie 
Cc: David Woodhouse 
Cc: Dominik Brodowski 
Cc: Alessandro Zummo 
Cc: Paul Fulghum 
Cc: Kylene Jo Hall 
Cc: Wim Van Sebroeck 
Acked-by: Dmitry Torokhov 	(Input bits)
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] Char: tty_wakeup cleanup

2007-02-11T18:51:26+00:00

tty_wakeup cleanup

- remove wake_up_interruptible(&tty->write_wait) surrounding
  tty_wakup(tty);
- substitute tty->ldisc.write_wakeup(tty) + wake_up() by tty_wakeup(tty);

Signed-off-by: Jiri Slaby 
Cc: Alan Cox 
Acked-by: Tilman Schmidt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] i2lib unused variable cleanup

2006-12-07T16:39:35+00:00

  In file included from drivers/char/ip2/ip2main.c:285:
    drivers/char/ip2/i2lib.c: In function `i2Output':
    drivers/char/ip2/i2lib.c:1019: warning: unused variable `rc'

Signed-off-by: Mariusz Kozlowski 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds