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authorJiri Slaby <jslaby@suse.cz>2011-03-23 10:48:35 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2011-04-19 14:43:01 -0700
commit6716671d8c1c07a8072098764d1b7cbfef7412ad (patch)
tree7aa2e138fb9565ffd37591bfe1887b379f57dfd7 /include/linux/tty.h
parentc18d77aa00cde1215d9e045ba8f93004fe843f38 (diff)
downloadop-kernel-dev-6716671d8c1c07a8072098764d1b7cbfef7412ad.zip
op-kernel-dev-6716671d8c1c07a8072098764d1b7cbfef7412ad.tar.gz
TTY: introduce deinit helpers for proper ldisc shutdown
Introduce deinitialize_tty_struct which should be called after initialize_tty_struct and before successfull tty_ldisc_setup. It calls tty_ldisc_deinit which is opposite of tty_ldisc_init. It only puts a reference to ldisc and assigns NULL to tty->ldisc. It will be used to shut down ldisc when tty_release cannot be called yet. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Julian Anastasov <ja@ssi.bg> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/tty.h')
-rw-r--r--include/linux/tty.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 9f469c7..4db4ca79 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -472,6 +472,7 @@ extern int tty_add_file(struct tty_struct *tty, struct file *file);
extern void free_tty_struct(struct tty_struct *tty);
extern void initialize_tty_struct(struct tty_struct *tty,
struct tty_driver *driver, int idx);
+extern void deinitialize_tty_struct(struct tty_struct *tty);
extern struct tty_struct *tty_init_dev(struct tty_driver *driver, int idx,
int first_ok);
extern int tty_release(struct inode *inode, struct file *filp);
@@ -525,6 +526,7 @@ extern int tty_set_ldisc(struct tty_struct *tty, int ldisc);
extern int tty_ldisc_setup(struct tty_struct *tty, struct tty_struct *o_tty);
extern void tty_ldisc_release(struct tty_struct *tty, struct tty_struct *o_tty);
extern void tty_ldisc_init(struct tty_struct *tty);
+extern void tty_ldisc_deinit(struct tty_struct *tty);
extern void tty_ldisc_begin(void);
/* This last one is just for the tty layer internals and shouldn't be used elsewhere */
extern void tty_ldisc_enable(struct tty_struct *tty);
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