This is a note to let you know that I've just added the patch titled
Input: synaptics - fix resolution for manually provided min/max
to the 3.15-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-synaptics-fix-resolution-for-manually-provided-min-max.patch
and it can be found in the queue-3.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d49cb7aeebb974713f9f7ab2991352d3050b095b Mon Sep 17 00:00:00 2001
From: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
Date: Sat, 7 Jun 2014 22:37:47 -0700
Subject: Input: synaptics - fix resolution for manually provided min/max
From: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
commit d49cb7aeebb974713f9f7ab2991352d3050b095b upstream.
commit 421e08c41fda fixed the reported min/max for the X and Y axis,
but unfortunately, it broke the resolution of those same axis.
On the t540p, the resolution is the same regarding X and Y. It is not
a problem for xf86-input-synaptics because this driver is only interested
in the ratio between X and Y.
Unfortunately, xf86-input-cmt uses directly the resolution, and having a
null resolution leads to some divide by 0 errors, which are translated by
-infinity in the resulting coordinates.
Reported-by: Peter Hutterer <peter.hutterer@xxxxxxxxx>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/input/mouse/synaptics.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -347,15 +347,6 @@ static int synaptics_resolution(struct p
unsigned char resp[3];
int i;
- for (i = 0; min_max_pnpid_table[i].pnp_ids; i++)
- if (matches_pnp_id(psmouse, min_max_pnpid_table[i].pnp_ids)) {
- priv->x_min = min_max_pnpid_table[i].x_min;
- priv->x_max = min_max_pnpid_table[i].x_max;
- priv->y_min = min_max_pnpid_table[i].y_min;
- priv->y_max = min_max_pnpid_table[i].y_max;
- return 0;
- }
-
if (SYN_ID_MAJOR(priv->identity) < 4)
return 0;
@@ -366,6 +357,16 @@ static int synaptics_resolution(struct p
}
}
+ for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
+ if (matches_pnp_id(psmouse, min_max_pnpid_table[i].pnp_ids)) {
+ priv->x_min = min_max_pnpid_table[i].x_min;
+ priv->x_max = min_max_pnpid_table[i].x_max;
+ priv->y_min = min_max_pnpid_table[i].y_min;
+ priv->y_max = min_max_pnpid_table[i].y_max;
+ return 0;
+ }
+ }
+
if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
Patches currently in stable-queue which might be from benjamin.tissoires@xxxxxxxxxx are
queue-3.15/input-synaptics-fix-resolution-for-manually-provided-min-max.patch
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