From: Jiri Slaby <jslaby@suse.cz>
To: gregkh@linuxfoundation.org
Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
Jiri Slaby <jslaby@suse.cz>
Subject: [PATCH 10/24] n_hdlc: remove unused backup_tty
Date: Wed, 19 Feb 2020 09:41:04 +0100 [thread overview]
Message-ID: <20200219084118.26491-10-jslaby@suse.cz> (raw)
In-Reply-To: <20200219084118.26491-1-jslaby@suse.cz>
It's only set to NULL and never properly used.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
drivers/tty/n_hdlc.c | 10 +---------
1 file changed, 1 insertion(+), 9 deletions(-)
diff --git a/drivers/tty/n_hdlc.c b/drivers/tty/n_hdlc.c
index d0e538ba51ea..ae6b9a45ae81 100644
--- a/drivers/tty/n_hdlc.c
+++ b/drivers/tty/n_hdlc.c
@@ -125,7 +125,6 @@ struct n_hdlc_buf_list {
* struct n_hdlc - per device instance data structure
* @magic - magic value for structure
* @tty - ptr to TTY structure
- * @backup_tty - TTY to use if tty gets closed
* @tbusy - reentrancy flag for tx wakeup code
* @woke_up - FIXME: describe this field
* @tx_buf_list - list of pending transmit frame buffers
@@ -136,7 +135,6 @@ struct n_hdlc_buf_list {
struct n_hdlc {
int magic;
struct tty_struct *tty;
- struct tty_struct *backup_tty;
int tbusy;
int woke_up;
struct n_hdlc_buf_list tx_buf_list;
@@ -267,15 +265,9 @@ static void n_hdlc_tty_close(struct tty_struct *tty)
clear_bit(TTY_NO_WRITE_SPLIT,&tty->flags);
#endif
tty->disc_data = NULL;
- if (tty == n_hdlc->backup_tty)
- n_hdlc->backup_tty = NULL;
if (tty != n_hdlc->tty)
return;
- if (n_hdlc->backup_tty) {
- n_hdlc->tty = n_hdlc->backup_tty;
- } else {
- n_hdlc_release (n_hdlc);
- }
+ n_hdlc_release (n_hdlc);
} /* end of n_hdlc_tty_close() */
/**
--
2.25.0
next prev parent reply other threads:[~2020-02-19 8:41 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-19 8:40 [PATCH 01/24] n_hdlc: remove tracing debug prints Jiri Slaby
2020-02-19 8:40 ` [PATCH 02/24] n_hdlc: remove unused macros Jiri Slaby
2020-02-19 8:40 ` [PATCH 03/24] n_hdlc: convert debuglevel use to pr_debug Jiri Slaby
2020-02-19 12:20 ` Joe Perches
2020-02-20 12:45 ` Greg KH
2020-02-21 8:16 ` Jiri Slaby
2020-02-19 8:40 ` [PATCH 04/24] n_hdlc: put init/exit strings directly to prints Jiri Slaby
2020-02-19 8:40 ` [PATCH 05/24] n_hdlc: cleanup messages during registration Jiri Slaby
2020-02-19 8:41 ` [PATCH 06/24] n_hdlc: use clamp() for maxframe Jiri Slaby
2020-02-19 8:41 ` [PATCH 07/24] n_hdlc: simplify freeing of buffer list Jiri Slaby
2020-02-19 8:41 ` [PATCH 08/24] n_hdlc: invert conditions in n_hdlc_tty_close and n_hdlc_tty_poll Jiri Slaby
2020-02-19 8:41 ` [PATCH 09/24] n_hdlc: remove unused flags Jiri Slaby
2020-02-19 8:41 ` Jiri Slaby [this message]
2020-02-19 8:41 ` [PATCH 11/24] n_hdlc: expand tty2n_hdlc macro Jiri Slaby
2020-02-19 8:41 ` [PATCH 12/24] n_hdlc: inline n_hdlc_release Jiri Slaby
2020-02-19 8:41 ` [PATCH 13/24] n_hdlc: remove cached tty Jiri Slaby
2020-02-19 8:41 ` [PATCH 14/24] n_hdlc: remove checking of n_hdlc Jiri Slaby
2020-02-19 8:41 ` [PATCH 15/24] n_hdlc: add helper for buffers allocation Jiri Slaby
2020-02-19 8:41 ` [PATCH 16/24] n_hdlc: move tty_ldisc_ops to the bottom Jiri Slaby
2020-02-19 8:41 ` [PATCH 17/24] n_hdlc: switch tbusy and woke_up to bools Jiri Slaby
2020-02-19 8:41 ` [PATCH 18/24] n_hdlc: remove unneeded ifdef Jiri Slaby
2020-02-19 8:41 ` [PATCH 19/24] n_hdlc: use __func__ and pr_ print helpers Jiri Slaby
2020-02-19 8:41 ` [PATCH 20/24] n_hdlc: remove useless whitespace at line wraps Jiri Slaby
2020-02-19 8:41 ` [PATCH 21/24] n_hdlc: remove spaces between function name and ( Jiri Slaby
2020-02-19 8:41 ` [PATCH 22/24] n_hdlc: add missing spaces after commas Jiri Slaby
2020-02-19 8:41 ` [PATCH 23/24] n_hdlc: fix whitespace around binary operators Jiri Slaby
2020-02-19 8:41 ` [PATCH 24/24] n_hdlc: wrap a comment properly Jiri Slaby
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=20200219084118.26491-10-jslaby@suse.cz \
--to=jslaby@suse.cz \
--cc=gregkh@linuxfoundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-serial@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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®