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author | Arnd Bergmann <arnd@arndb.de> | 2011-10-20 15:14:25 +0200 |
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committer | Arnd Bergmann <arnd@arndb.de> | 2011-10-20 15:14:25 +0200 |
commit | b4cbb8a4e602ea77b0525d06eff89c6a6070dab3 (patch) | |
tree | a5dd723679582505ef3905c90f0c2c032d191b94 /drivers/tty/pty.c | |
parent | 526b264163068f77c5f2409031f5e25caf3900a9 (diff) | |
parent | c5d7a9230e5e277f262b6806b7f4d6b35de5a3fb (diff) | |
download | linux-b4cbb8a4e602ea77b0525d06eff89c6a6070dab3.tar.bz2 |
Merge branch 'imx-features-for-arnd' of git://git.pengutronix.de/git/imx/linux-2.6 into imx/devel
Conflicts:
arch/arm/mach-mx5/clock-mx51-mx53.c
arch/arm/mach-mx5/devices-imx53.h
Diffstat (limited to 'drivers/tty/pty.c')
-rw-r--r-- | drivers/tty/pty.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c index 98b6e3bdb000..e809e9d4683c 100644 --- a/drivers/tty/pty.c +++ b/drivers/tty/pty.c @@ -446,8 +446,19 @@ static inline void legacy_pty_init(void) { } int pty_limit = NR_UNIX98_PTY_DEFAULT; static int pty_limit_min; static int pty_limit_max = NR_UNIX98_PTY_MAX; +static int tty_count; static int pty_count; +static inline void pty_inc_count(void) +{ + pty_count = (++tty_count) / 2; +} + +static inline void pty_dec_count(void) +{ + pty_count = (--tty_count) / 2; +} + static struct cdev ptmx_cdev; static struct ctl_table pty_table[] = { @@ -542,6 +553,7 @@ static struct tty_struct *pts_unix98_lookup(struct tty_driver *driver, static void pty_unix98_shutdown(struct tty_struct *tty) { + tty_driver_remove_tty(tty->driver, tty); /* We have our own method as we don't use the tty index */ kfree(tty->termios); } @@ -588,7 +600,8 @@ static int pty_unix98_install(struct tty_driver *driver, struct tty_struct *tty) */ tty_driver_kref_get(driver); tty->count++; - pty_count++; + pty_inc_count(); /* tty */ + pty_inc_count(); /* tty->link */ return 0; err_free_mem: deinitialize_tty_struct(o_tty); @@ -602,7 +615,7 @@ err_free_tty: static void pty_unix98_remove(struct tty_driver *driver, struct tty_struct *tty) { - pty_count--; + pty_dec_count(); } static const struct tty_operations ptm_unix98_ops = { |