[3.13.y-ckt stable] Patch "Input: elantech - fix detection of touchpads where the revision matches a known rate" has been added to staging queue
Kamal Mostafa
kamal at canonical.com
Tue Jul 7 22:16:18 UTC 2015
This is a note to let you know that I have just added a patch titled
Input: elantech - fix detection of touchpads where the revision matches a known rate
to the linux-3.13.y-queue branch of the 3.13.y-ckt extended stable tree
which can be found at:
http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.13.y-queue
This patch is scheduled to be released in version 3.13.11-ckt23.
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 3.13.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Kamal
------
>From dd941c46f7dfb6c2cf7302783b6288ecf1dc54e2 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede at redhat.com>
Date: Tue, 2 Jun 2015 10:40:50 -0700
Subject: Input: elantech - fix detection of touchpads where the revision
matches a known rate
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
commit 5f0ee9d17aae628b22be86966471db65be21f262 upstream.
Make the check to skip the rate check more lax, so that it applies
to all hw_version 4 models.
This fixes the touchpad not being detected properly on Asus PU551LA
laptops.
Reported-and-tested-by: David Zafra Gómez <dezeta at klo.es>
Signed-off-by: Hans de Goede <hdegoede at redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov at gmail.com>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
drivers/input/mouse/elantech.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index d259451..6265952 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -1271,10 +1271,11 @@ static bool elantech_is_signature_valid(const unsigned char *param)
return true;
/*
- * Some models have a revision higher then 20. Meaning param[2] may
- * be 10 or 20, skip the rates check for these.
+ * Some hw_version >= 4 models have a revision higher then 20. Meaning
+ * that param[2] may be 10 or 20, skip the rates check for these.
*/
- if (param[0] == 0x46 && (param[1] & 0xef) == 0x0f && param[2] < 40)
+ if ((param[0] & 0x0f) >= 0x06 && (param[1] & 0xaf) == 0x0f &&
+ param[2] < 40)
return true;
for (i = 0; i < ARRAY_SIZE(rates); i++)
--
1.9.1
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