linux-kernel - [PATCH 3/4] n_tty: pass ldata to canon_skip

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Date:   Wed, 16 Aug 2023 12:58:09 +0200
From:   "Jiri Slaby (SUSE)" <jirislaby@...nel.org>
To:     gregkh@...uxfoundation.org
Cc:     linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Jiri Slaby (SUSE)" <jirislaby@...nel.org>
Subject: [PATCH 3/4] n_tty: pass ldata to canon_skip_eof() directly

'tty' is not needed in canon_skip_eof(), so we can pass 'ldata' directly
instead.

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@...nel.org>
---
 drivers/tty/n_tty.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index c1859ae263eb..bab7005ef520 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -2053,9 +2053,8 @@ static bool canon_copy_from_read_buf(struct tty_struct *tty,
  * EOF (special EOL character that's a __DISABLED_CHAR)
  * in the stream, silently eat the EOF.
  */
-static void canon_skip_eof(struct tty_struct *tty)
+static void canon_skip_eof(struct n_tty_data *ldata)
 {
-	struct n_tty_data *ldata = tty->disc_data;
 	size_t tail, canon_head;
 
 	canon_head = smp_load_acquire(&ldata->canon_head);
@@ -2153,7 +2152,7 @@ static ssize_t n_tty_read(struct tty_struct *tty, struct file *file,
 			 * releasing the lock and returning done.
 			 */
 			if (!nr)
-				canon_skip_eof(tty);
+				canon_skip_eof(ldata);
 			else if (canon_copy_from_read_buf(tty, &kb, &nr))
 				return kb - kbuf;
 		} else {
-- 
2.41.0