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| author | Jiri Slaby <jslaby@suse.cz> | 2011-07-14 16:35:14 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-08-23 21:34:07 +0400 |
| commit | 906cbe1364d94da7cbf74c1d05e3e78b2883f661 (patch) | |
| tree | fca513a03781a2d0e2ac518aab13c8d528a0468c /drivers/tty/tty_mutex.c | |
| parent | eff4b0b9fe37873d3dc7ade0e08e6f0f89279b8b (diff) | |
| download | linux-906cbe1364d94da7cbf74c1d05e3e78b2883f661.tar.xz | |
TTY: remove tty_locked
We used it really only serial and ami_serial. The rest of the
callsites were BUG/WARN_ONs to check if BTM is held. Now that we
pruned tty_locked from both of the real users, we can get rid of
tty_lock along with __big_tty_mutex_owner.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/tty/tty_mutex.c')
| -rw-r--r-- | drivers/tty/tty_mutex.c | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/drivers/tty/tty_mutex.c b/drivers/tty/tty_mutex.c index 3b2bb7719442..9ff986c32a21 100644 --- a/drivers/tty/tty_mutex.c +++ b/drivers/tty/tty_mutex.c @@ -15,30 +15,18 @@ * Don't use in new code. */ static DEFINE_MUTEX(big_tty_mutex); -struct task_struct *__big_tty_mutex_owner; -EXPORT_SYMBOL_GPL(__big_tty_mutex_owner); /* * Getting the big tty mutex. */ void __lockfunc tty_lock(void) { - struct task_struct *task = current; - - WARN_ON(__big_tty_mutex_owner == task); - mutex_lock(&big_tty_mutex); - __big_tty_mutex_owner = task; } EXPORT_SYMBOL(tty_lock); void __lockfunc tty_unlock(void) { - struct task_struct *task = current; - - WARN_ON(__big_tty_mutex_owner != task); - __big_tty_mutex_owner = NULL; - mutex_unlock(&big_tty_mutex); } EXPORT_SYMBOL(tty_unlock); |