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TTY: ttyprintk, initialize tty_port earlier

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After tty_register_driver is called, it is too late to initialize a
guy with which we operate in open. When a process already called
open(2) on that node, the structures may be in use uninitialized.

Move the initialization prior to tty_register_driver.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Samo Pogacnik <samo_pogacnik@t-2.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2012-08-07 21:47:40 +02:00 committed by Greg Kroah-Hartman
parent ee8b593aff
commit 536a3440a2
1 changed files with 4 additions and 4 deletions
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8
drivers/char/ttyprintk.c
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@ -180,6 +180,10 @@ static int __init ttyprintk_init(void)
int ret = -ENOMEM;
void *rp;
tty_port_init(&tpk_port.port);
tpk_port.port.ops = &null_ops;
mutex_init(&tpk_port.port_write_mutex);
ttyprintk_driver = alloc_tty_driver(1);
if (!ttyprintk_driver)
return ret;
@ -210,10 +214,6 @@ static int __init ttyprintk_init(void)
goto error;
}
tty_port_init(&tpk_port.port);
tpk_port.port.ops = &null_ops;
mutex_init(&tpk_port.port_write_mutex);
return 0;
error: