All of lore.kernel.org
 help / color / mirror / Atom feed
From: Peter Hurley <peter@hurleysoftware.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.cz>,
	linux-kernel@vger.kernel.org,
	Peter Hurley <peter@hurleysoftware.com>
Subject: [PATCH v2 2/6] tty: Eliminate global symbol tty_ldisc_N_TTY
Date: Sat,  9 Jan 2016 21:35:19 -0800	[thread overview]
Message-ID: <1452404123-9024-3-git-send-email-peter@hurleysoftware.com> (raw)
In-Reply-To: <1452404123-9024-1-git-send-email-peter@hurleysoftware.com>

Reduce global tty symbols; move and rename tty_ldisc_begin() as
n_tty_init() and redefine the N_TTY ldisc ops as file scope.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
---
 drivers/tty/n_tty.c     | 12 ++++++++----
 drivers/tty/tty_io.c    |  2 +-
 drivers/tty/tty_ldisc.c |  6 ------
 include/linux/tty.h     |  3 +--
 4 files changed, 10 insertions(+), 13 deletions(-)

diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index 6bab08a..5315d1a 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -2488,7 +2488,7 @@ static void n_tty_fasync(struct tty_struct *tty, int on)
 	}
 }
 
-struct tty_ldisc_ops tty_ldisc_N_TTY = {
+static struct tty_ldisc_ops n_tty_ops = {
 	.magic           = TTY_LDISC_MAGIC,
 	.name            = "n_tty",
 	.open            = n_tty_open,
@@ -2509,14 +2509,18 @@ struct tty_ldisc_ops tty_ldisc_N_TTY = {
  *	n_tty_inherit_ops	-	inherit N_TTY methods
  *	@ops: struct tty_ldisc_ops where to save N_TTY methods
  *
- *	Enables a 'subclass' line discipline to 'inherit' N_TTY
- *	methods.
+ *	Enables a 'subclass' line discipline to 'inherit' N_TTY methods.
  */
 
 void n_tty_inherit_ops(struct tty_ldisc_ops *ops)
 {
-	*ops = tty_ldisc_N_TTY;
+	*ops = n_tty_ops;
 	ops->owner = NULL;
 	ops->refcount = ops->flags = 0;
 }
 EXPORT_SYMBOL_GPL(n_tty_inherit_ops);
+
+void __init n_tty_init(void)
+{
+	tty_register_ldisc(N_TTY, &n_tty_ops);
+}
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 0650a34..8b4e7cd 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -3576,7 +3576,7 @@ void __init console_init(void)
 	initcall_t *call;
 
 	/* Setup the default TTY line discipline. */
-	tty_ldisc_begin();
+	n_tty_init();
 
 	/*
 	 * set up the console device so that later boot sequences can
diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c
index 4cb5e572..68947f6 100644
--- a/drivers/tty/tty_ldisc.c
+++ b/drivers/tty/tty_ldisc.c
@@ -824,9 +824,3 @@ void tty_ldisc_deinit(struct tty_struct *tty)
 		tty_ldisc_put(tty->ldisc);
 	tty->ldisc = NULL;
 }
-
-void tty_ldisc_begin(void)
-{
-	/* Setup the default TTY line discipline. */
-	(void) tty_register_ldisc(N_TTY, &tty_ldisc_N_TTY);
-}
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 1b31736..328a7b8 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -576,7 +576,6 @@ extern int tty_ldisc_setup(struct tty_struct *tty, struct tty_struct *o_tty);
 extern void tty_ldisc_release(struct tty_struct *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);
 
 static inline int tty_ldisc_receive_buf(struct tty_ldisc *ld, unsigned char *p,
 					char *f, int count)
@@ -593,8 +592,8 @@ static inline int tty_ldisc_receive_buf(struct tty_ldisc *ld, unsigned char *p,
 
 
 /* n_tty.c */
-extern struct tty_ldisc_ops tty_ldisc_N_TTY;
 extern void n_tty_inherit_ops(struct tty_ldisc_ops *ops);
+extern void __init n_tty_init(void);
 
 /* tty_audit.c */
 #ifdef CONFIG_AUDIT
-- 
2.7.0

  parent reply	other threads:[~2016-01-10  5:35 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-11-28  2:38 [PATCH 0/6] Peter Hurley
2015-11-28  2:38 ` [PATCH 1/6] tty: Unexport system-wide tty_mutex Peter Hurley
2015-11-28  2:38 ` [PATCH 2/6] tty: Eliminate global symbol tty_ldisc_N_TTY Peter Hurley
2015-11-28  2:38 ` [PATCH 3/6] tty: Remove declarations to non-existent functions Peter Hurley
2015-11-28  2:38 ` [PATCH 4/6] tty: Move tty_check_change() helper Peter Hurley
2015-11-28  2:38 ` [PATCH 5/6] tty: Remove unreferenced tty flags macro TTY_DEBUG Peter Hurley
2015-11-28  2:38 ` [PATCH 6/6] tty: Make tty_files_lock per-tty Peter Hurley
2016-01-10  5:35 ` [PATCH v2 0/6] tty globals cleanup (cont'd) Peter Hurley
2016-01-10  5:35   ` [PATCH v2 1/6] tty: Unexport system-wide tty_mutex Peter Hurley
2016-01-10  5:35   ` Peter Hurley [this message]
2016-01-10  5:35   ` [PATCH v2 3/6] tty: Remove declarations to non-existent functions Peter Hurley
2016-01-10  5:35   ` [PATCH v2 4/6] tty: Move tty_check_change() helper Peter Hurley
2016-01-10  5:35   ` [PATCH v2 5/6] tty: Remove unreferenced tty flags macro TTY_DEBUG Peter Hurley
2016-01-10  5:35   ` [PATCH v2 6/6] tty: Make tty_files_lock per-tty Peter Hurley

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1452404123-9024-3-git-send-email-peter@hurleysoftware.com \
    --to=peter@hurleysoftware.com \
    --cc=gregkh@linuxfoundation.org \
    --cc=jslaby@suse.cz \
    --cc=linux-kernel@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.