diff options
author | Jiri Slaby <jslaby@suse.cz> | 2012-11-15 08:49:56 (GMT) |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-11-16 01:20:58 (GMT) |
commit | 191c5f10275cfbb36802edadbdb10c73537327b4 (patch) | |
tree | 93e6f0d57cb1295fb7c461dbe5ecefafeb4ad15a /arch | |
parent | d0f59141ca40159c9d142c0f62e9aea61f846539 (diff) | |
download | linux-191c5f10275cfbb36802edadbdb10c73537327b4.tar.xz |
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 'arch')
-rw-r--r-- | arch/alpha/kernel/srmcons.c | 5 | ||||
-rw-r--r-- | arch/ia64/hp/sim/simserial.c | 1 | ||||
-rw-r--r-- | arch/m68k/emu/nfcon.c | 6 | ||||
-rw-r--r-- | arch/parisc/kernel/pdc_cons.c | 5 | ||||
-rw-r--r-- | arch/um/drivers/line.c | 2 | ||||
-rw-r--r-- | arch/xtensa/platforms/iss/console.c | 1 |
6 files changed, 15 insertions, 5 deletions
diff --git a/arch/alpha/kernel/srmcons.c b/arch/alpha/kernel/srmcons.c index 5d58652..59b7bba 100644 --- a/arch/alpha/kernel/srmcons.c +++ b/arch/alpha/kernel/srmcons.c @@ -205,7 +205,6 @@ static const struct tty_operations srmcons_ops = { static int __init srmcons_init(void) { - tty_port_init(&srmcons_singleton.port); setup_timer(&srmcons_singleton.timer, srmcons_receive_chars, (unsigned long)&srmcons_singleton); if (srm_is_registered_console) { @@ -215,6 +214,9 @@ srmcons_init(void) driver = alloc_tty_driver(MAX_SRM_CONSOLE_DEVICES); if (!driver) return -ENOMEM; + + tty_port_init(&srmcons_singleton.port); + driver->driver_name = "srm"; driver->name = "srm"; driver->major = 0; /* dynamic */ @@ -227,6 +229,7 @@ srmcons_init(void) err = tty_register_driver(driver); if (err) { put_tty_driver(driver); + tty_port_destroy(&srmcons_singleton.port); return err; } srmcons_driver = driver; diff --git a/arch/ia64/hp/sim/simserial.c b/arch/ia64/hp/sim/simserial.c index ec536e4..fc3924d 100644 --- a/arch/ia64/hp/sim/simserial.c +++ b/arch/ia64/hp/sim/simserial.c @@ -555,6 +555,7 @@ static int __init simrs_init(void) return 0; err_free_tty: put_tty_driver(hp_simserial_driver); + tty_port_destroy(&state->port); return retval; } diff --git a/arch/m68k/emu/nfcon.c b/arch/m68k/emu/nfcon.c index 16d170f..6685bf4 100644 --- a/arch/m68k/emu/nfcon.c +++ b/arch/m68k/emu/nfcon.c @@ -120,8 +120,6 @@ static int __init nfcon_init(void) { int res; - tty_port_init(&nfcon_tty_port); - stderr_id = nf_get_id("NF_STDERR"); if (!stderr_id) return -ENODEV; @@ -130,6 +128,8 @@ static int __init nfcon_init(void) if (!nfcon_tty_driver) return -ENOMEM; + tty_port_init(&nfcon_tty_port); + nfcon_tty_driver->driver_name = "nfcon"; nfcon_tty_driver->name = "nfcon"; nfcon_tty_driver->type = TTY_DRIVER_TYPE_SYSTEM; @@ -143,6 +143,7 @@ static int __init nfcon_init(void) if (res) { pr_err("failed to register nfcon tty driver\n"); put_tty_driver(nfcon_tty_driver); + tty_port_destroy(&nfcon_tty_port); return res; } @@ -157,6 +158,7 @@ static void __exit nfcon_exit(void) unregister_console(&nf_console); tty_unregister_driver(nfcon_tty_driver); put_tty_driver(nfcon_tty_driver); + tty_port_destroy(&nfcon_tty_port); } module_init(nfcon_init); diff --git a/arch/parisc/kernel/pdc_cons.c b/arch/parisc/kernel/pdc_cons.c index 8823863..efc5e7d 100644 --- a/arch/parisc/kernel/pdc_cons.c +++ b/arch/parisc/kernel/pdc_cons.c @@ -186,13 +186,13 @@ static int __init pdc_console_tty_driver_init(void) printk(KERN_INFO "The PDC console driver is still registered, removing CON_BOOT flag\n"); pdc_cons.flags &= ~CON_BOOT; - tty_port_init(&tty_port); - pdc_console_tty_driver = alloc_tty_driver(1); if (!pdc_console_tty_driver) return -ENOMEM; + tty_port_init(&tty_port); + pdc_console_tty_driver->driver_name = "pdc_cons"; pdc_console_tty_driver->name = "ttyB"; pdc_console_tty_driver->major = MUX_MAJOR; @@ -207,6 +207,7 @@ static int __init pdc_console_tty_driver_init(void) err = tty_register_driver(pdc_console_tty_driver); if (err) { printk(KERN_ERR "Unable to register the PDC console TTY driver\n"); + tty_port_destroy(&tty_port); return err; } diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c index fd9a15b..9ffc28b 100644 --- a/arch/um/drivers/line.c +++ b/arch/um/drivers/line.c @@ -584,6 +584,8 @@ int register_lines(struct line_driver *line_driver, printk(KERN_ERR "register_lines : can't register %s driver\n", line_driver->name); put_tty_driver(driver); + for (i = 0; i < nlines; i++) + tty_port_destroy(&lines[i].port); return err; } diff --git a/arch/xtensa/platforms/iss/console.c b/arch/xtensa/platforms/iss/console.c index 7e74895..8207a11 100644 --- a/arch/xtensa/platforms/iss/console.c +++ b/arch/xtensa/platforms/iss/console.c @@ -221,6 +221,7 @@ static __exit void rs_exit(void) printk("ISS_SERIAL: failed to unregister serial driver (%d)\n", error); put_tty_driver(serial_driver); + tty_port_destroy(&serial_port); } |