linux-kernel - [PATCH] Input: uinput - allow for max == min during input

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Message-ID: <20180918052256.GA23446@jelly>
Date:   Tue, 18 Sep 2018 15:22:56 +1000
From:   Peter Hutterer <peter.hutterer@...-t.net>
To:     dmitry.torokhov@...il.com, linux-input@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Benjamin Tissoires <benjamin.tissoires@...il.com>
Subject: [PATCH] Input: uinput - allow for max == min during input_absinfo
 validation

These values are inclusive, so a range of 1 requires min == max.

Signed-off-by: Peter Hutterer <peter.hutterer@...-t.net>
---
 drivers/input/misc/uinput.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c
index 96a887f33698..eb14ddf69346 100644
--- a/drivers/input/misc/uinput.c
+++ b/drivers/input/misc/uinput.c
@@ -410,7 +410,7 @@ static int uinput_validate_absinfo(struct input_dev *dev, unsigned int code,
 	min = abs->minimum;
 	max = abs->maximum;
 
-	if ((min != 0 || max != 0) && max <= min) {
+	if ((min != 0 || max != 0) && max < min) {
 		printk(KERN_DEBUG
 		       "%s: invalid abs[%02x] min:%d max:%d\n",
 		       UINPUT_NAME, code, min, max);
-- 
2.17.1