This is a note to let you know that I've just added the patch titled
Input: ALPS - fix touchpad detection when buttons are pressed
to the 3.2-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-alps-fix-touchpad-detection-when-buttons-are-pressed.patch
and it can be found in the queue-3.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From [email protected] Thu Mar 8 14:57:33 2012
From: Seth Forshee <[email protected]>
Date: Thu, 8 Mar 2012 13:48:12 -0600
Subject: Input: ALPS - fix touchpad detection when buttons are pressed
To: [email protected], [email protected]
Cc: [email protected], [email protected]
Message-ID: <[email protected]>
From: Akio Idehara <[email protected]>
commit 99c90ab31fad855b9da9dee3a5aa6c27f263e9d6 upstream.
ALPS touchpad detection fails if some buttons of ALPS are pressed.
The reason is that the "E6" query response byte is different from
what is expected.
This was tested on a Toshiba Portege R500.
Signed-off-by: Akio Idehara <[email protected]>
Tested-by: Seth Forshee <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/input/mouse/alps.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -421,7 +421,9 @@ static const struct alps_model_info *alp
/*
* First try "E6 report".
- * ALPS should return 0,0,10 or 0,0,100
+ * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed.
+ * The bits 0-2 of the first byte will be 1s if some buttons are
+ * pressed.
*/
param[0] = 0;
if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES) ||
@@ -437,7 +439,8 @@ static const struct alps_model_info *alp
psmouse_dbg(psmouse, "E6 report: %2.2x %2.2x %2.2x",
param[0], param[1], param[2]);
- if (param[0] != 0 || param[1] != 0 || (param[2] != 10 && param[2] !=
100))
+ if ((param[0] & 0xf8) != 0 || param[1] != 0 ||
+ (param[2] != 10 && param[2] != 100))
return NULL;
/*
Patches currently in stable-queue which might be from
[email protected] are
queue-3.2/input-alps-fix-touchpad-detection-when-buttons-are-pressed.patch
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