This is a note to let you know that I've just added the patch titled
Input: elantech - don't set bit 1 of reg_10 when the no_hw_res quirk is set
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
input-elantech-don-t-set-bit-1-of-reg_10-when-the-no_hw_res-quirk-is-set.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From fb4f8f568a9def02240ef9bf7aabd246dc63a081 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdego...@redhat.com>
Date: Sat, 7 Jun 2014 23:07:13 -0700
Subject: Input: elantech - don't set bit 1 of reg_10 when the no_hw_res quirk
is set
From: Hans de Goede <hdego...@redhat.com>
commit fb4f8f568a9def02240ef9bf7aabd246dc63a081 upstream.
The touchpad on the GIGABYTE U2442 not only stops communicating when we try
to set bit 3 (enable real hardware resolution) of reg_10, but on some BIOS
versions also when we set bit 1 (enable two finger mode auto correct).
I've asked the original reporter of:
https://bugzilla.kernel.org/show_bug.cgi?id=61151
To check that not setting bit 1 does not lead to any adverse effects on his
model / BIOS revision, and it does not, so this commit fixes the touchpad
not working on these versions by simply never setting bit 1 for laptop
models with the no_hw_res quirk.
Reported-and-tested-by: James Lademann <jwladem...@gmail.com>
Tested-by: Philipp Wolfer <ph.wol...@gmail.com>
Signed-off-by: Hans de Goede <hdego...@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torok...@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/input/mouse/elantech.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -849,7 +849,7 @@ static int elantech_set_absolute_mode(st
if (etd->set_hw_resolution)
etd->reg_10 = 0x0b;
else
- etd->reg_10 = 0x03;
+ etd->reg_10 = 0x01;
if (elantech_write_reg(psmouse, 0x10, etd->reg_10))
rc = -1;
@@ -1350,7 +1350,8 @@ static int elantech_reconnect(struct psm
}
/*
- * Some hw_version 3 models go into error state when we try to set bit 3 of r10
+ * Some hw_version 3 models go into error state when we try to set
+ * bit 3 and/or bit 1 of r10.
*/
static const struct dmi_system_id no_hw_res_dmi_table[] = {
#if defined(CONFIG_DMI) && defined(CONFIG_X86)
Patches currently in stable-queue which might be from hdego...@redhat.com are
queue-3.14/input-elantech-don-t-set-bit-1-of-reg_10-when-the-no_hw_res-quirk-is-set.patch
queue-3.14/input-elantech-deal-with-clickpads-reporting-right-button-events.patch
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