linux-kernel - [PATCH 04/29] tty: move N_TTY_BUF_SIZE to n

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Message-ID: <20250220111606.138045-5-jirislaby@kernel.org>
Date: Thu, 20 Feb 2025 12:15:41 +0100
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 04/29] tty: move N_TTY_BUF_SIZE to n_tty

"N_TTY_BUF_SIZE" is private to n_tty and shall not be exposed to the
world. Definitely not in tty.h somewhere in the middle of "struct
tty_struct".

This is a remnant of moving "read_flags" to "struct n_tty_data" in
commit 3fe780b379fa ("TTY: move ldisc data from tty_struct: bitmaps").
But some cleanup was needed first (in previous patches).

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@...nel.org>
---
 drivers/tty/n_tty.c | 2 ++
 include/linux/tty.h | 1 -
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index 5e9ca4376d68..2c5995019dd1 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -56,6 +56,8 @@
  */
 #define WAKEUP_CHARS 256
 
+#define N_TTY_BUF_SIZE 4096
+
 /*
  * This defines the low- and high-watermarks for throttling and
  * unthrottling the TTY driver.  These watermarks are used for
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 6bb4fb3845f0..0a46e4054dec 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -239,7 +239,6 @@ struct tty_struct {
 
 	struct list_head tty_files;
 
-#define N_TTY_BUF_SIZE 4096
 	struct work_struct SAK_work;
 } __randomize_layout;
 
-- 
2.48.1