linux-kernel - [PATCH] Input: vsxxxaa - fix code dropping bytes from queue

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Message-ID: <20141024223846.GA1914@dtor-ws>
Date:	Fri, 24 Oct 2014 15:38:46 -0700
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	linux-input@...r.kernel.org
Cc:	Jan-Benedict Glaw <jbglaw@...-owl.de>, linux-kernel@...r.kernel.org
Subject: [PATCH] Input: vsxxxaa - fix code dropping bytes from queue

I believe the intent of the code was to drop oldest bytes from the queue,
not the latest if we drop one byte and both latest and some oldest of we
are dropping more than one.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
 drivers/input/mouse/vsxxxaa.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/mouse/vsxxxaa.c b/drivers/input/mouse/vsxxxaa.c
index 3829823..abd4944 100644
--- a/drivers/input/mouse/vsxxxaa.c
+++ b/drivers/input/mouse/vsxxxaa.c
@@ -128,7 +128,7 @@ static void vsxxxaa_drop_bytes(struct vsxxxaa *mouse, int num)
 	if (num >= mouse->count) {
 		mouse->count = 0;
 	} else {
-		memmove(mouse->buf, mouse->buf + num - 1, BUFLEN - num);
+		memmove(mouse->buf, mouse->buf + num, BUFLEN - num);
 		mouse->count -= num;
 	}
 }
-- 
2.1.0.rc2.206.gedb03e5


-- 
Dmitry
--
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