linux-kernel - [PATCH v2 31/32] auxdisplay: charlcd: Do not print chars at end of line

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Date:   Mon, 21 Sep 2020 16:46:43 +0200
From:   poeschel@...onage.de
To:     Miguel Ojeda Sandonis <miguel.ojeda.sandonis@...il.com>,
        linux-kernel@...r.kernel.org (open list)
Cc:     Lars Poeschel <poeschel@...onage.de>
Subject: [PATCH v2 31/32] auxdisplay: charlcd: Do not print chars at end of line

From: Lars Poeschel <poeschel@...onage.de>

Skip printing characters at the end of a display line. This fits to the
behaviour we already had, that the cursor is nailed to last position of
a line.

Signed-off-by: Lars Poeschel <poeschel@...onage.de>
---
 drivers/auxdisplay/charlcd.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/auxdisplay/charlcd.c b/drivers/auxdisplay/charlcd.c
index cd3a304c08ec..1d5b3af9cca7 100644
--- a/drivers/auxdisplay/charlcd.c
+++ b/drivers/auxdisplay/charlcd.c
@@ -111,6 +111,9 @@ static void charlcd_home(struct charlcd *lcd)
 
 static void charlcd_print(struct charlcd *lcd, char c)
 {
+	if (lcd->addr.x >= lcd->width)
+		return;
+
 	if (lcd->char_conv)
 		c = lcd->char_conv[(unsigned char)c];
 
-- 
2.28.0