linux-kernel - [051/143] Input: elantech - fix firmware version check

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Message-Id: <20110506002210.222898782@clark.kroah.org>
Date:	Thu, 05 May 2011 17:20:36 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Florian Ragwitz <rafl@...ian.org>,
	Dmitry Torokhov <dtor@...l.ru>
Subject: [051/143] Input: elantech - fix firmware version check

2.6.32-longterm review patch.  If anyone has any objections, please let us know.

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

From: Florian Ragwitz <rafl@...ian.org>

commit 225c61aad38b12924b3df5f4ef43150c0d6bae8c upstream.

The check determining whether device should use 4- or 6-byte packets
was trying to compare firmware with 2.48, but was failing on majors
greater than 2. The new check ensures that versions like 4.1 are
checked properly.

Signed-off-by: Florian Ragwitz <rafl@...ian.org>
Signed-off-by: Dmitry Torokhov <dtor@...l.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 drivers/input/mouse/elantech.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -665,7 +665,8 @@ int elantech_init(struct psmouse *psmous
 	 * Assume every version greater than this is new EeePC style
 	 * hardware with 6 byte packets
 	 */
-	if (etd->fw_version_maj >= 0x02 && etd->fw_version_min >= 0x30) {
+	if ((etd->fw_version_maj == 0x02 && etd->fw_version_min >= 0x30) ||
+	    etd->fw_version_maj > 0x02) {
 		etd->hw_version = 2;
 		/* For now show extra debug information */
 		etd->debug = 1;


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