diff options
| author | Jiri Slaby <jslaby@suse.cz> | 2012-11-15 09:49:56 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-11-16 02:20:58 +0100 |
| commit | 191c5f10275cfbb36802edadbdb10c73537327b4 (patch) | |
| tree | 93e6f0d57cb1295fb7c461dbe5ecefafeb4ad15a /drivers/char | |
| parent | TTY: isicom, fix tty buffers memory leak (diff) | |
| download | linux-191c5f10275cfbb36802edadbdb10c73537327b4.tar.xz linux-191c5f10275cfbb36802edadbdb10c73537327b4.zip | |
TTY: call tty_port_destroy in the rest of drivers
After commit "TTY: move tty buffers to tty_port", the tty buffers are
not freed in some drivers. This is because tty_port_destructor is not
called whenever a tty_port is freed. This was an assumption I counted
with but was unfortunately untrue. So fix the drivers to fulfil this
assumption.
To be sure, the TTY buffers (and later some stuff) are gone along with
the tty_port, we have to call tty_port_destroy at tear-down places.
This is mostly where the structure containing a tty_port is freed.
This patch does exactly that -- put tty_port_destroy at those places.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/pcmcia/synclink_cs.c | 5 | ||||
| -rw-r--r-- | drivers/char/ttyprintk.c | 4 |
2 files changed, 7 insertions, 2 deletions
diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c index 21721d25e388..b66eaa04f8cb 100644 --- a/drivers/char/pcmcia/synclink_cs.c +++ b/drivers/char/pcmcia/synclink_cs.c @@ -549,8 +549,10 @@ static int mgslpc_probe(struct pcmcia_device *link) /* Initialize the struct pcmcia_device structure */ ret = mgslpc_config(link); - if (ret) + if (ret) { + tty_port_destroy(&info->port); return ret; + } mgslpc_add_device(info); @@ -2757,6 +2759,7 @@ static void mgslpc_remove_device(MGSLPC_INFO *remove_info) hdlcdev_exit(info); #endif release_resources(info); + tty_port_destroy(&info->port); kfree(info); mgslpc_device_count--; return; diff --git a/drivers/char/ttyprintk.c b/drivers/char/ttyprintk.c index af98f6d6509b..4945bd3d18d0 100644 --- a/drivers/char/ttyprintk.c +++ b/drivers/char/ttyprintk.c @@ -179,7 +179,6 @@ static int __init ttyprintk_init(void) { int ret = -ENOMEM; - tty_port_init(&tpk_port.port); tpk_port.port.ops = &null_ops; mutex_init(&tpk_port.port_write_mutex); @@ -190,6 +189,8 @@ static int __init ttyprintk_init(void) if (IS_ERR(ttyprintk_driver)) return PTR_ERR(ttyprintk_driver); + tty_port_init(&tpk_port.port); + ttyprintk_driver->driver_name = "ttyprintk"; ttyprintk_driver->name = "ttyprintk"; ttyprintk_driver->major = TTYAUX_MAJOR; @@ -211,6 +212,7 @@ static int __init ttyprintk_init(void) error: tty_unregister_driver(ttyprintk_driver); put_tty_driver(ttyprintk_driver); + tty_port_destroy(&tpk_port.port); ttyprintk_driver = NULL; return ret; } |