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Fix ALPS v5 and v7 trackpads (rhbz 1203584)

This commit is contained in:
Josh Boyer 2015-03-24 12:33:03 -04:00
parent 6b33b74760
commit 243dfca335
2 changed files with 63 additions and 0 deletions
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54
Input-ALPS-fix-max-coordinates-for-v5-and-v7-protoco.patch Normal file
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@ -0,0 +1,54 @@
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: Sat, 21 Mar 2015 20:36:56 -0700
Subject: [PATCH] Input: ALPS - fix max coordinates for v5 and v7 protocols
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Commit 3296f71cd2fde7a2ad52e66a27eae419f6328066 ("Input: ALPS - consolidate
setting protocol parameters") inadvertently moved call to
alps_dolphin_get_device_area() from v5 to v7 protocol, causing both
protocols report incorrect maximum values for X and Y axes which resulted
in crash in Synaptics X driver.
Reported-by: Santiago Gala <sgala@apache.org>
Reported-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
drivers/input/mouse/alps.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index 1bd15ebc01f2..33198b91bebf 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -2281,10 +2281,12 @@ static int alps_set_protocol(struct psmouse *psmouse,
priv->set_abs_params = alps_set_abs_params_mt;
priv->nibble_commands = alps_v3_nibble_commands;
priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
- priv->x_max = 1360;
- priv->y_max = 660;
priv->x_bits = 23;
priv->y_bits = 12;
+
+ if (alps_dolphin_get_device_area(psmouse, priv))
+ return -EIO;
+
break;
case ALPS_PROTO_V6:
@@ -2303,9 +2305,8 @@ static int alps_set_protocol(struct psmouse *psmouse,
priv->set_abs_params = alps_set_abs_params_mt;
priv->nibble_commands = alps_v3_nibble_commands;
priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
-
- if (alps_dolphin_get_device_area(psmouse, priv))
- return -EIO;
+ priv->x_max = 0xfff;
+ priv->y_max = 0x7ff;
if (priv->fw_ver[1] != 0xba)
priv->flags |= ALPS_BUTTONPAD;
--
2.1.0

9
kernel.spec
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@ -630,6 +630,9 @@ Patch26171: acpi-video-Add-force-native-backlight-quirk-for-Leno.patch
Patch26172: drm-Fixup-racy-refcounting-in-plane_force_disable.patch
Patch26173: drm-i915-Don-t-try-to-reference-the-fb-in-get_initia.patch
#rhbz 1203584
Patch26174: Input-ALPS-fix-max-coordinates-for-v5-and-v7-protoco.patch
# END OF PATCH DEFINITIONS
%endif
@ -1371,6 +1374,9 @@ ApplyPatch acpi-video-Add-force-native-backlight-quirk-for-Leno.patch
ApplyPatch drm-Fixup-racy-refcounting-in-plane_force_disable.patch
ApplyPatch drm-i915-Don-t-try-to-reference-the-fb-in-get_initia.patch
#rhbz 1203584
ApplyPatch Input-ALPS-fix-max-coordinates-for-v5-and-v7-protoco.patch
# END OF PATCH APPLICATIONS
%endif
@ -2221,6 +2227,9 @@ fi
#
#
%changelog
* Tue Mar 24 2015 Josh Boyer <jwboyer@fedoraproject.org>
- Fix ALPS v5 and v7 trackpads (rhbz 1203584)
* Tue Mar 24 2015 Josh Boyer <jwboyer@fedoraproject.org> - 4.0.0-0.rc5.git1.3
- Linux v4.0-rc5-25-g90a5a895cc8b
- Add some i915 fixes