linux-kernel - [PATCH] tty: caif: removed unused function debugfs

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Message-Id: <20250320-caif-debugfs-tx-v1-1-be5654770088@kernel.org>
Date: Thu, 20 Mar 2025 11:19:20 +0000
From: Simon Horman <horms@...nel.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Jiri Slaby <jirislaby@...nel.org>
Cc: Andrew Lunn <andrew+netdev@...n.ch>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Nathan Chancellor <nathan@...nel.org>, 
 Nick Desaulniers <ndesaulniers@...gle.com>, 
 Bill Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>, 
 linux-serial@...r.kernel.org, netdev@...r.kernel.org, 
 linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: [PATCH] tty: caif: removed unused function debugfs_tx()

Remove debugfs_tx() which was added when the caif driver was added in
commit 9b27105b4a44 ("net-caif-driver: add CAIF serial driver (ldisc)")
but it has never been used.

Flagged by LLVM 19.1.7 W=1 builds.

Signed-off-by: Simon Horman <horms@...nel.org>
---
 drivers/net/caif/caif_serial.c | 14 --------------
 1 file changed, 14 deletions(-)

diff --git a/drivers/net/caif/caif_serial.c b/drivers/net/caif/caif_serial.c
index ed3a589def6b..90ea3dc0fb10 100644
--- a/drivers/net/caif/caif_serial.c
+++ b/drivers/net/caif/caif_serial.c
@@ -126,15 +126,6 @@ static inline void debugfs_rx(struct ser_device *ser, const u8 *data, int size)
 	ser->rx_blob.data = ser->rx_data;
 	ser->rx_blob.size = size;
 }
-
-static inline void debugfs_tx(struct ser_device *ser, const u8 *data, int size)
-{
-	if (size > sizeof(ser->tx_data))
-		size = sizeof(ser->tx_data);
-	memcpy(ser->tx_data, data, size);
-	ser->tx_blob.data = ser->tx_data;
-	ser->tx_blob.size = size;
-}
 #else
 static inline void debugfs_init(struct ser_device *ser, struct tty_struct *tty)
 {
@@ -151,11 +142,6 @@ static inline void update_tty_status(struct ser_device *ser)
 static inline void debugfs_rx(struct ser_device *ser, const u8 *data, int size)
 {
 }
-
-static inline void debugfs_tx(struct ser_device *ser, const u8 *data, int size)
-{
-}
-
 #endif

 static void ldisc_receive(struct tty_struct *tty, const u8 *data,