linux-kernel - [PATCH 19/70] mxser: make xmit ring buffer variables unsigned

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Date:   Fri, 18 Jun 2021 08:14:25 +0200
From:   Jiri Slaby <jslaby@...e.cz>
To:     gregkh@...uxfoundation.org
Cc:     linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 19/70] mxser: make xmit ring buffer variables unsigned

Make the xmit ring buffer pointers and counter (xmit_head, xmit_tail,
xmit_cnt) unsigned. Now, the assumptions for the compiler are clear --
they cannot be negative.

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 drivers/tty/mxser.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
index 45f36d92c5ea..53136a7d92b1 100644
--- a/drivers/tty/mxser.c
+++ b/drivers/tty/mxser.c
@@ -351,9 +351,9 @@ struct mxser_port {
 	u8 read_status_mask;
 	u8 ignore_status_mask;
 	u8 xmit_fifo_size;
-	int xmit_head;
-	int xmit_tail;
-	int xmit_cnt;
+	unsigned int xmit_head;
+	unsigned int xmit_tail;
+	unsigned int xmit_cnt;
 	int closing;
 
 	struct ktermios normal_termios;
-- 
2.32.0