linux-kernel - [PATCH 4.1 22/78] HID: uclogic: fix limit in uclogic_tablet

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Message-Id: <20150911224609.716038361@linuxfoundation.org>
Date:	Fri, 11 Sep 2015 15:49:23 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
	Nikolai Kondrashov <spbnick@...il.com>,
	Jiri Kosina <jkosina@...e.com>
Subject: [PATCH 4.1 22/78] HID: uclogic: fix limit in uclogic_tablet_enable()

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@...cle.com>

commit 4a8e70f5d0d80675fc17b9ba1e62db8ca6b91775 upstream.

The limit should be ARRAY_SIZE(params) (5 elements) here instead of
sizeof(params) (20 bytes).

Fixes: 08177f40bd00 ('HID: uclogic: merge hid-huion driver in hid-uclogic')
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Reviewed-by: Nikolai Kondrashov <spbnick@...il.com>
Signed-off-by: Jiri Kosina <jkosina@...e.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/hid/hid-uclogic.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/hid/hid-uclogic.c
+++ b/drivers/hid/hid-uclogic.c
@@ -858,7 +858,7 @@ static int uclogic_tablet_enable(struct
 	for (p = drvdata->rdesc;
 	     p <= drvdata->rdesc + drvdata->rsize - 4;) {
 		if (p[0] == 0xFE && p[1] == 0xED && p[2] == 0x1D &&
-		    p[3] < sizeof(params)) {
+		    p[3] < ARRAY_SIZE(params)) {
 			v = params[p[3]];
 			put_unaligned(cpu_to_le32(v), (s32 *)p);
 			p += 4;


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