linux-kernel - [PATCH v1 12/19] hid-ft260: uart: use kfifo

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Message-Id: <20240210215147.77629-13-michael.zaidman@gmail.com>
Date: Sat, 10 Feb 2024 23:51:40 +0200
From: Michael Zaidman <michael.zaidman@...il.com>
To: chrysh@...istina-quast.de,
	daniel.beer@...rinstitute.com,
	jikos@...nel.org
Cc: linux-kernel@...r.kernel.org,
	linux-input@...r.kernel.org,
	linux-serial@...r.kernel.org,
	ilpo.jarvinen@...ux.intel.com,
	johan@...nel.org,
	gregkh@...uxfoundation.org,
	equinox@...c24.net,
	michael.zaidman@...il.com
Subject: [PATCH v1 12/19] hid-ft260: uart: use kfifo_avail for fifo write room check

Replace uart fifo write room calculation with the kfifo_avail kernel API.

Signed-off-by: Michael Zaidman <michael.zaidman@...il.com>
---
 drivers/hid/hid-ft260.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hid/hid-ft260.c b/drivers/hid/hid-ft260.c
index f8d4bf7e6c4f..3d1a9ec88cb9 100644
--- a/drivers/hid/hid-ft260.c
+++ b/drivers/hid/hid-ft260.c
@@ -1264,7 +1264,7 @@ static unsigned int ft260_uart_write_room(struct tty_struct *tty)
 {
 	struct ft260_device *port = tty->driver_data;
 
-	return FIFO_SIZE - kfifo_len(&port->xmit_fifo);
+	return kfifo_avail(&port->xmit_fifo);
 }
 
 static unsigned int ft260_uart_chars_in_buffer(struct tty_struct *tty)
-- 
2.40.1