From bd884149aca61de269fd9bad83fe2a4232ffab21 Mon Sep 17 00:00:00 2001
From: Ulrik De Bie <ulrik.debie-os@e2big.org>
Date: Mon, 6 Apr 2015 15:35:38 -0700
Subject: Input: elantech - fix absolute mode setting on some ASUS laptops

On ASUS TP500LN and X750JN, the touchpad absolute mode is reset each
time set_rate is done.

In order to fix this, we will verify the firmware version, and if it
matches the one in those laptops, the set_rate function is overloaded
with a function elantech_set_rate_restore_reg_07 that performs the
set_rate with the original function, followed by a restore of reg_07
(the register that sets the absolute mode on elantech v4 hardware).

Also the ASUS TP500LN and X750JN firmware version, capabilities, and
button constellation is added to elantech.c

Cc: stable@vger.kernel.org
Reported-and-tested-by: George Moutsopoulos <gmoutso@yahoo.co.uk>
Signed-off-by: Ulrik De Bie <ulrik.debie-os@e2big.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 drivers/input/mouse/elantech.c | 22 ++++++++++++++++++++++
 drivers/input/mouse/elantech.h |  1 +
 2 files changed, 23 insertions(+)

(limited to 'drivers/input/mouse')

diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index 6e22682c8255..991dc6b20a58 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -892,6 +892,21 @@ static psmouse_ret_t elantech_process_byte(struct psmouse *psmouse)
 	return PSMOUSE_FULL_PACKET;
 }
 
+/*
+ * This writes the reg_07 value again to the hardware at the end of every
+ * set_rate call because the register loses its value. reg_07 allows setting
+ * absolute mode on v4 hardware
+ */
+static void elantech_set_rate_restore_reg_07(struct psmouse *psmouse,
+		unsigned int rate)
+{
+	struct elantech_data *etd = psmouse->private;
+
+	etd->original_set_rate(psmouse, rate);
+	if (elantech_write_reg(psmouse, 0x07, etd->reg_07))
+		psmouse_err(psmouse, "restoring reg_07 failed\n");
+}
+
 /*
  * Put the touchpad into absolute mode
  */
@@ -1094,6 +1109,8 @@ static int elantech_get_resolution_v4(struct psmouse *psmouse,
  * Asus K53SV              0x450f01        78, 15, 0c      2 hw buttons
  * Asus G46VW              0x460f02        00, 18, 0c      2 hw buttons
  * Asus G750JX             0x360f00        00, 16, 0c      2 hw buttons
+ * Asus TP500LN            0x381f17        10, 14, 0e      clickpad
+ * Asus X750JN             0x381f17        10, 14, 0e      clickpad
  * Asus UX31               0x361f00        20, 15, 0e      clickpad
  * Asus UX32VD             0x361f02        00, 15, 0e      clickpad
  * Avatar AVIU-145A2       0x361f00        ?               clickpad
@@ -1635,6 +1652,11 @@ int elantech_init(struct psmouse *psmouse)
 		goto init_fail;
 	}
 
+	if (etd->fw_version == 0x381f17) {
+		etd->original_set_rate = psmouse->set_rate;
+		psmouse->set_rate = elantech_set_rate_restore_reg_07;
+	}
+
 	if (elantech_set_input_params(psmouse)) {
 		psmouse_err(psmouse, "failed to query touchpad range.\n");
 		goto init_fail;
diff --git a/drivers/input/mouse/elantech.h b/drivers/input/mouse/elantech.h
index 6f3afec02f03..f965d1569cc3 100644
--- a/drivers/input/mouse/elantech.h
+++ b/drivers/input/mouse/elantech.h
@@ -142,6 +142,7 @@ struct elantech_data {
 	struct finger_pos mt[ETP_MAX_FINGERS];
 	unsigned char parity[256];
 	int (*send_cmd)(struct psmouse *psmouse, unsigned char c, unsigned char *param);
+	void (*original_set_rate)(struct psmouse *psmouse, unsigned int rate);
 };
 
 #ifdef CONFIG_MOUSE_PS2_ELANTECH
-- 
cgit v1.2.3


From 6bcca19f5dcedc3a006ca0bcc3699a437cadee74 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Wed, 8 Apr 2015 09:26:42 -0700
Subject: Input: alps - fix touchpad buttons getting stuck when used with
 trackpoint
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

When the left touchpad button gets pressed, and then the trackpoint is
moved, and then the button is released, the following happens:

1) touchpad packet is received, touchpad evdev node reports BTN_LEFT 1

2) pointing stick packet is received, the hw will report a BTN_LEFT 1 in
   this packet because when the trackstick is active it communicates the
   combined touchpad + pointing stick buttons in the trackstick packet,
   since alps_report_bare_ps2_packet passes NULL (*) for the dev2 parameter
   to alps_report_buttons the combining is not detected and the
   pointing stick evdev node will also report BTN_LEFT 1

3) on release of the button a pointing stick packet with BTN_LEFT 0 is
   received and the pointing stick evdev node will report BTN_LEFT 0

Note how because of the passing as NULL for dev2 the touchpad evdev node
will never send BTN_LEFT 0 in this scenario leading to a stuck mouse button.

This is a regression in 4.0 introduced by commit 04aae283ba6a8
("Input: ALPS - do not mix trackstick and external PS/2 mouse data")

This commit fixes this by passing in the touchpad evdev as dev2 parameter
when calling alps_report_buttons for the pointingstick on alps v2 devices,
so that alps_report_buttons correctly detect that we're already reporting
the button as pressed via the touchpad evdev node, and will also send the
release event there.

Cc: stable@vger.kernel.org # 4.0
Reported-by: Hans de Bruin <jmdebruin@xmsnet.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 drivers/input/mouse/alps.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'drivers/input/mouse')

diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index 27bcdbc950c9..ea6cb64dfb28 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -1159,13 +1159,14 @@ static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
 					bool report_buttons)
 {
 	struct alps_data *priv = psmouse->private;
-	struct input_dev *dev;
+	struct input_dev *dev, *dev2 = NULL;
 
 	/* Figure out which device to use to report the bare packet */
 	if (priv->proto_version == ALPS_PROTO_V2 &&
 	    (priv->flags & ALPS_DUALPOINT)) {
 		/* On V2 devices the DualPoint Stick reports bare packets */
 		dev = priv->dev2;
+		dev2 = psmouse->dev;
 	} else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) {
 		/* Register dev3 mouse if we received PS/2 packet first time */
 		if (!IS_ERR(priv->dev3))
@@ -1177,7 +1178,7 @@ static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
 	}
 
 	if (report_buttons)
-		alps_report_buttons(dev, NULL,
+		alps_report_buttons(dev, dev2,
 				packet[0] & 1, packet[0] & 2, packet[0] & 4);
 
 	input_report_rel(dev, REL_X,
-- 
cgit v1.2.3


From 92bac83dd79e60e65c475222e41a992a70434beb Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Sun, 12 Apr 2015 15:42:35 -0700
Subject: Input: alps - non interleaved V2 dualpoint has separate stick button
 bits

Non interleaved V2 dualpoint touchpad / stick combos have separate stick
button bits in the touchpad packets, if we do not check these then the
trackpoint buttons will not work when using the touchpad, and when pressed
when the user starts using the touchpad will report a release event even
though the button is still pressed.

This commit fixes this by checking the separate bits, note that we simply
combine the buttons, since the hardware does the same when using the touchpad
buttons with the trackpoint, so we do not have enough information to properly
separate them.

Reported-by: Hans de Bruin <jmdebruin@xmsnet.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 drivers/input/mouse/alps.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'drivers/input/mouse')

diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index ea6cb64dfb28..da3af8db697c 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -243,6 +243,14 @@ static void alps_process_packet_v1_v2(struct psmouse *psmouse)
 		return;
 	}
 
+	/* Non interleaved V2 dualpoint has separate stick button bits */
+	if (priv->proto_version == ALPS_PROTO_V2 &&
+	    priv->flags == (ALPS_PASS | ALPS_DUALPOINT)) {
+		left |= packet[0] & 1;
+		right |= packet[0] & 2;
+		middle |= packet[0] & 4;
+	}
+
 	alps_report_buttons(dev, dev2, left, right, middle);
 
 	/* Convert hardware tap to a reasonable Z value */
-- 
cgit v1.2.3


From 3c0213d17a09601e0c6c0ae0e27caf70d988290f Mon Sep 17 00:00:00 2001
From: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Date: Thu, 23 Apr 2015 09:08:43 -0700
Subject: Input: elantech - fix semi-mt protocol for v3 HW

When the v3 hardware sees more than one finger, it uses the semi-mt
protocol to report the touches. However, it currently works when
num_fingers is 0, 1 or 2, but when it is 3 and above, it sends only 1
finger as if num_fingers was 1.

This confuses userspace which knows how to deal with extra fingers
when all the slots are used, but not when some are missing.

Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=90101

Cc: stable@vger.kernel.org
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 drivers/input/mouse/elantech.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/input/mouse')

diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index 991dc6b20a58..79363b687195 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -315,7 +315,7 @@ static void elantech_report_semi_mt_data(struct input_dev *dev,
 					 unsigned int x2, unsigned int y2)
 {
 	elantech_set_slot(dev, 0, num_fingers != 0, x1, y1);
-	elantech_set_slot(dev, 1, num_fingers == 2, x2, y2);
+	elantech_set_slot(dev, 1, num_fingers >= 2, x2, y2);
 }
 
 /*
-- 
cgit v1.2.3


From 72eceab743cf61082357068e0686ffac66fe47e5 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Wed, 20 May 2015 14:37:41 -0700
Subject: Input: alps - fix finger jumps on lifting 2 fingers on v7 touchpad

On v7 touchpads sometimes when 2 fingers are moved down on the touchpad
until they "fall of" the touchpad, the second touch will report 0 for y
(max y really since the y axis is inverted) and max x as coordinates,
rather then reporting 0, 0 as is expected for a non touching finger.

This commit detects this and treats these touches as non touching.

See the evemu-recording here:
https://bugzilla.redhat.com/attachment.cgi?id=1025058

BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1221200
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 drivers/input/mouse/alps.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'drivers/input/mouse')

diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index e6708f6efb4d..7752bd59d4b7 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -941,6 +941,11 @@ static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt,
 	case V7_PACKET_ID_TWO:
 		mt[1].x &= ~0x000F;
 		mt[1].y |= 0x000F;
+		/* Detect false-postive touches where x & y report max value */
+		if (mt[1].y == 0x7ff && mt[1].x == 0xff0) {
+			mt[1].x = 0;
+			/* y gets set to 0 at the end of this function */
+		}
 		break;
 
 	case V7_PACKET_ID_MULTI:
-- 
cgit v1.2.3


From 412dbad2c7e273b48e8477247c74b2ad65c452d2 Mon Sep 17 00:00:00 2001
From: Thomas Hellstrom <thellstrom@vmware.com>
Date: Wed, 20 May 2015 14:46:14 -0700
Subject: Input: vmmouse - do not reference non-existing version of X driver

The vmmouse Kconfig help text was referring to an incorrect user-space
driver version. Fix this.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 drivers/input/mouse/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/input/mouse')

diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig
index 7462d2fc8cfe..d7820d1152d2 100644
--- a/drivers/input/mouse/Kconfig
+++ b/drivers/input/mouse/Kconfig
@@ -156,7 +156,7 @@ config MOUSE_PS2_VMMOUSE
 	  Say Y here if you are running under control of VMware hypervisor
 	  (ESXi, Workstation or Fusion). Also make sure that when you enable
 	  this option, you remove the xf86-input-vmmouse user-space driver
-	  or upgrade it to at least xf86-input-vmmouse 13.0.1, which doesn't
+	  or upgrade it to at least xf86-input-vmmouse 13.1.0, which doesn't
 	  load in the presence of an in-kernel vmmouse driver.
 
 	  If unsure, say N.
-- 
cgit v1.2.3


From 9c27847dda9cfae7c273cde62becf364f9fa9ea3 Mon Sep 17 00:00:00 2001
From: "Luis R. Rodriguez" <mcgrof@suse.com>
Date: Wed, 27 May 2015 11:09:38 +0930
Subject: kernel/params: constify struct kernel_param_ops uses

Most code already uses consts for the struct kernel_param_ops,
sweep the kernel for the last offending stragglers. Other than
include/linux/moduleparam.h and kernel/params.c all other changes
were generated with the following Coccinelle SmPL patch. Merge
conflicts between trees can be handled with Coccinelle.

In the future git could get Coccinelle merge support to deal with
patch --> fail --> grammar --> Coccinelle --> new patch conflicts
automatically for us on patches where the grammar is available and
the patch is of high confidence. Consider this a feature request.

Test compiled on x86_64 against:

	* allnoconfig
	* allmodconfig
	* allyesconfig

@ const_found @
identifier ops;
@@

const struct kernel_param_ops ops = {
};

@ const_not_found depends on !const_found @
identifier ops;
@@

-struct kernel_param_ops ops = {
+const struct kernel_param_ops ops = {
};

Generated-by: Coccinelle SmPL
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Junio C Hamano <gitster@pobox.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: cocci@systeme.lip6.fr
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---
 arch/s390/kernel/perf_cpum_sf.c         |  2 +-
 arch/x86/kvm/mmu_audit.c                |  2 +-
 arch/x86/platform/uv/uv_nmi.c           |  2 +-
 drivers/block/null_blk.c                |  4 ++--
 drivers/char/ipmi/ipmi_watchdog.c       |  6 +++---
 drivers/dma/dmatest.c                   |  4 ++--
 drivers/ide/ide.c                       |  2 +-
 drivers/infiniband/ulp/srp/ib_srp.c     |  4 ++--
 drivers/input/misc/ati_remote2.c        |  4 ++--
 drivers/input/mouse/psmouse-base.c      |  2 +-
 drivers/misc/lis3lv02d/lis3lv02d.c      |  2 +-
 drivers/mtd/ubi/block.c                 |  2 +-
 drivers/net/wireless/ath/wil6210/main.c |  4 ++--
 drivers/power/test_power.c              | 16 ++++++++--------
 drivers/thermal/intel_powerclamp.c      |  4 ++--
 drivers/tty/hvc/hvc_iucv.c              |  2 +-
 drivers/tty/sysrq.c                     |  2 +-
 drivers/video/fbdev/uvesafb.c           |  2 +-
 drivers/virtio/virtio_mmio.c            |  2 +-
 fs/nfs/super.c                          |  2 +-
 include/linux/moduleparam.h             | 30 +++++++++++++++---------------
 kernel/params.c                         | 14 +++++++-------
 net/sunrpc/auth.c                       |  2 +-
 net/sunrpc/xprtsock.c                   |  6 +++---
 security/apparmor/lsm.c                 |  6 +++---
 security/integrity/ima/ima_crypto.c     |  2 +-
 sound/pci/hda/hda_intel.c               |  2 +-
 27 files changed, 66 insertions(+), 66 deletions(-)

(limited to 'drivers/input/mouse')

diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c
index e6a1578fc000..afe05bfb7e00 100644
--- a/arch/s390/kernel/perf_cpum_sf.c
+++ b/arch/s390/kernel/perf_cpum_sf.c
@@ -1572,7 +1572,7 @@ static int param_set_sfb_size(const char *val, const struct kernel_param *kp)
 }
 
 #define param_check_sfb_size(name, p) __param_check(name, p, void)
-static struct kernel_param_ops param_ops_sfb_size = {
+static const struct kernel_param_ops param_ops_sfb_size = {
 	.set = param_set_sfb_size,
 	.get = param_get_sfb_size,
 };
diff --git a/arch/x86/kvm/mmu_audit.c b/arch/x86/kvm/mmu_audit.c
index 9ade5cfb5a4c..87393e3ae087 100644
--- a/arch/x86/kvm/mmu_audit.c
+++ b/arch/x86/kvm/mmu_audit.c
@@ -291,7 +291,7 @@ static int mmu_audit_set(const char *val, const struct kernel_param *kp)
 	return 0;
 }
 
-static struct kernel_param_ops audit_param_ops = {
+static const struct kernel_param_ops audit_param_ops = {
 	.set = mmu_audit_set,
 	.get = param_get_bool,
 };
diff --git a/arch/x86/platform/uv/uv_nmi.c b/arch/x86/platform/uv/uv_nmi.c
index 7488cafab955..020c101c255f 100644
--- a/arch/x86/platform/uv/uv_nmi.c
+++ b/arch/x86/platform/uv/uv_nmi.c
@@ -104,7 +104,7 @@ static int param_set_local64(const char *val, const struct kernel_param *kp)
 	return 0;
 }
 
-static struct kernel_param_ops param_ops_local64 = {
+static const struct kernel_param_ops param_ops_local64 = {
 	.get = param_get_local64,
 	.set = param_set_local64,
 };
diff --git a/drivers/block/null_blk.c b/drivers/block/null_blk.c
index 65cd61a4145e..0b4b25617bb7 100644
--- a/drivers/block/null_blk.c
+++ b/drivers/block/null_blk.c
@@ -99,7 +99,7 @@ static int null_set_queue_mode(const char *str, const struct kernel_param *kp)
 	return null_param_store_val(str, &queue_mode, NULL_Q_BIO, NULL_Q_MQ);
 }
 
-static struct kernel_param_ops null_queue_mode_param_ops = {
+static const struct kernel_param_ops null_queue_mode_param_ops = {
 	.set	= null_set_queue_mode,
 	.get	= param_get_int,
 };
@@ -127,7 +127,7 @@ static int null_set_irqmode(const char *str, const struct kernel_param *kp)
 					NULL_IRQ_TIMER);
 }
 
-static struct kernel_param_ops null_irqmode_param_ops = {
+static const struct kernel_param_ops null_irqmode_param_ops = {
 	.set	= null_set_irqmode,
 	.get	= param_get_int,
 };
diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c
index 37b8be7cba95..0ac3bd1a5497 100644
--- a/drivers/char/ipmi/ipmi_watchdog.c
+++ b/drivers/char/ipmi/ipmi_watchdog.c
@@ -208,7 +208,7 @@ static int set_param_timeout(const char *val, const struct kernel_param *kp)
 	return rv;
 }
 
-static struct kernel_param_ops param_ops_timeout = {
+static const struct kernel_param_ops param_ops_timeout = {
 	.set = set_param_timeout,
 	.get = param_get_int,
 };
@@ -270,14 +270,14 @@ static int set_param_wdog_ifnum(const char *val, const struct kernel_param *kp)
 	return 0;
 }
 
-static struct kernel_param_ops param_ops_wdog_ifnum = {
+static const struct kernel_param_ops param_ops_wdog_ifnum = {
 	.set = set_param_wdog_ifnum,
 	.get = param_get_int,
 };
 
 #define param_check_wdog_ifnum param_check_int
 
-static struct kernel_param_ops param_ops_str = {
+static const struct kernel_param_ops param_ops_str = {
 	.set = set_param_str,
 	.get = get_param_str,
 };
diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 220ee49633e4..b8576fd6bd0e 100644
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -120,7 +120,7 @@ static struct dmatest_info {
 
 static int dmatest_run_set(const char *val, const struct kernel_param *kp);
 static int dmatest_run_get(char *val, const struct kernel_param *kp);
-static struct kernel_param_ops run_ops = {
+static const struct kernel_param_ops run_ops = {
 	.set = dmatest_run_set,
 	.get = dmatest_run_get,
 };
@@ -195,7 +195,7 @@ static int dmatest_wait_get(char *val, const struct kernel_param *kp)
 	return param_get_bool(val, kp);
 }
 
-static struct kernel_param_ops wait_ops = {
+static const struct kernel_param_ops wait_ops = {
 	.get = dmatest_wait_get,
 	.set = param_set_bool,
 };
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index e29b02ca9e91..f086ef387475 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -199,7 +199,7 @@ static int ide_set_dev_param_mask(const char *s, const struct kernel_param *kp)
 	return 0;
 }
 
-static struct kernel_param_ops param_ops_ide_dev_mask = {
+static const struct kernel_param_ops param_ops_ide_dev_mask = {
 	.set = ide_set_dev_param_mask
 };
 
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 918814cd0f80..e4eec9da5ea9 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -98,7 +98,7 @@ module_param(register_always, bool, 0444);
 MODULE_PARM_DESC(register_always,
 		 "Use memory registration even for contiguous memory regions");
 
-static struct kernel_param_ops srp_tmo_ops;
+static const struct kernel_param_ops srp_tmo_ops;
 
 static int srp_reconnect_delay = 10;
 module_param_cb(reconnect_delay, &srp_tmo_ops, &srp_reconnect_delay,
@@ -183,7 +183,7 @@ out:
 	return res;
 }
 
-static struct kernel_param_ops srp_tmo_ops = {
+static const struct kernel_param_ops srp_tmo_ops = {
 	.get = srp_tmo_get,
 	.set = srp_tmo_set,
 };
diff --git a/drivers/input/misc/ati_remote2.c b/drivers/input/misc/ati_remote2.c
index f63341f20b91..cfd58e87da26 100644
--- a/drivers/input/misc/ati_remote2.c
+++ b/drivers/input/misc/ati_remote2.c
@@ -94,7 +94,7 @@ static int ati_remote2_get_mode_mask(char *buffer,
 
 static unsigned int channel_mask = ATI_REMOTE2_MAX_CHANNEL_MASK;
 #define param_check_channel_mask(name, p) __param_check(name, p, unsigned int)
-static struct kernel_param_ops param_ops_channel_mask = {
+static const struct kernel_param_ops param_ops_channel_mask = {
 	.set = ati_remote2_set_channel_mask,
 	.get = ati_remote2_get_channel_mask,
 };
@@ -103,7 +103,7 @@ MODULE_PARM_DESC(channel_mask, "Bitmask of channels to accept <15:Channel16>...<
 
 static unsigned int mode_mask = ATI_REMOTE2_MAX_MODE_MASK;
 #define param_check_mode_mask(name, p) __param_check(name, p, unsigned int)
-static struct kernel_param_ops param_ops_mode_mask = {
+static const struct kernel_param_ops param_ops_mode_mask = {
 	.set = ati_remote2_set_mode_mask,
 	.get = ati_remote2_get_mode_mask,
 };
diff --git a/drivers/input/mouse/psmouse-base.c b/drivers/input/mouse/psmouse-base.c
index 5bb1658f60c7..f8286b625ec4 100644
--- a/drivers/input/mouse/psmouse-base.c
+++ b/drivers/input/mouse/psmouse-base.c
@@ -47,7 +47,7 @@ MODULE_LICENSE("GPL");
 static unsigned int psmouse_max_proto = PSMOUSE_AUTO;
 static int psmouse_set_maxproto(const char *val, const struct kernel_param *);
 static int psmouse_get_maxproto(char *buffer, const struct kernel_param *kp);
-static struct kernel_param_ops param_ops_proto_abbrev = {
+static const struct kernel_param_ops param_ops_proto_abbrev = {
 	.set = psmouse_set_maxproto,
 	.get = psmouse_get_maxproto,
 };
diff --git a/drivers/misc/lis3lv02d/lis3lv02d.c b/drivers/misc/lis3lv02d/lis3lv02d.c
index 4739689d23ad..fb8705fc3aca 100644
--- a/drivers/misc/lis3lv02d/lis3lv02d.c
+++ b/drivers/misc/lis3lv02d/lis3lv02d.c
@@ -115,7 +115,7 @@ static int param_set_axis(const char *val, const struct kernel_param *kp)
 	return ret;
 }
 
-static struct kernel_param_ops param_ops_axis = {
+static const struct kernel_param_ops param_ops_axis = {
 	.set = param_set_axis,
 	.get = param_get_int,
 };
diff --git a/drivers/mtd/ubi/block.c b/drivers/mtd/ubi/block.c
index c9eb78f10a0d..4968c071f399 100644
--- a/drivers/mtd/ubi/block.c
+++ b/drivers/mtd/ubi/block.c
@@ -161,7 +161,7 @@ static int __init ubiblock_set_param(const char *val,
 	return 0;
 }
 
-static struct kernel_param_ops ubiblock_param_ops = {
+static const struct kernel_param_ops ubiblock_param_ops = {
 	.set    = ubiblock_set_param,
 };
 module_param_cb(block, &ubiblock_param_ops, NULL, 0);
diff --git a/drivers/net/wireless/ath/wil6210/main.c b/drivers/net/wireless/ath/wil6210/main.c
index c2a238426425..790c3df0bb03 100644
--- a/drivers/net/wireless/ath/wil6210/main.c
+++ b/drivers/net/wireless/ath/wil6210/main.c
@@ -58,7 +58,7 @@ static int mtu_max_set(const char *val, const struct kernel_param *kp)
 	return ret;
 }
 
-static struct kernel_param_ops mtu_max_ops = {
+static const struct kernel_param_ops mtu_max_ops = {
 	.set = mtu_max_set,
 	.get = param_get_uint,
 };
@@ -87,7 +87,7 @@ static int ring_order_set(const char *val, const struct kernel_param *kp)
 	return 0;
 }
 
-static struct kernel_param_ops ring_order_ops = {
+static const struct kernel_param_ops ring_order_ops = {
 	.set = ring_order_set,
 	.get = param_get_uint,
 };
diff --git a/drivers/power/test_power.c b/drivers/power/test_power.c
index f986e0cca7ac..83c42ea88f2b 100644
--- a/drivers/power/test_power.c
+++ b/drivers/power/test_power.c
@@ -448,42 +448,42 @@ static int param_set_battery_voltage(const char *key,
 
 #define param_get_battery_voltage param_get_int
 
-static struct kernel_param_ops param_ops_ac_online = {
+static const struct kernel_param_ops param_ops_ac_online = {
 	.set = param_set_ac_online,
 	.get = param_get_ac_online,
 };
 
-static struct kernel_param_ops param_ops_usb_online = {
+static const struct kernel_param_ops param_ops_usb_online = {
 	.set = param_set_usb_online,
 	.get = param_get_usb_online,
 };
 
-static struct kernel_param_ops param_ops_battery_status = {
+static const struct kernel_param_ops param_ops_battery_status = {
 	.set = param_set_battery_status,
 	.get = param_get_battery_status,
 };
 
-static struct kernel_param_ops param_ops_battery_present = {
+static const struct kernel_param_ops param_ops_battery_present = {
 	.set = param_set_battery_present,
 	.get = param_get_battery_present,
 };
 
-static struct kernel_param_ops param_ops_battery_technology = {
+static const struct kernel_param_ops param_ops_battery_technology = {
 	.set = param_set_battery_technology,
 	.get = param_get_battery_technology,
 };
 
-static struct kernel_param_ops param_ops_battery_health = {
+static const struct kernel_param_ops param_ops_battery_health = {
 	.set = param_set_battery_health,
 	.get = param_get_battery_health,
 };
 
-static struct kernel_param_ops param_ops_battery_capacity = {
+static const struct kernel_param_ops param_ops_battery_capacity = {
 	.set = param_set_battery_capacity,
 	.get = param_get_battery_capacity,
 };
 
-static struct kernel_param_ops param_ops_battery_voltage = {
+static const struct kernel_param_ops param_ops_battery_voltage = {
 	.set = param_set_battery_voltage,
 	.get = param_get_battery_voltage,
 };
diff --git a/drivers/thermal/intel_powerclamp.c b/drivers/thermal/intel_powerclamp.c
index 725718e97a0b..500f8f551817 100644
--- a/drivers/thermal/intel_powerclamp.c
+++ b/drivers/thermal/intel_powerclamp.c
@@ -119,7 +119,7 @@ exit:
 	return ret;
 }
 
-static struct kernel_param_ops duration_ops = {
+static const struct kernel_param_ops duration_ops = {
 	.set = duration_set,
 	.get = param_get_int,
 };
@@ -167,7 +167,7 @@ exit_win:
 	return ret;
 }
 
-static struct kernel_param_ops window_size_ops = {
+static const struct kernel_param_ops window_size_ops = {
 	.set = window_size_set,
 	.get = param_get_int,
 };
diff --git a/drivers/tty/hvc/hvc_iucv.c b/drivers/tty/hvc/hvc_iucv.c
index f78a87b07872..bb809cf36617 100644
--- a/drivers/tty/hvc/hvc_iucv.c
+++ b/drivers/tty/hvc/hvc_iucv.c
@@ -1345,7 +1345,7 @@ static int param_get_vmidfilter(char *buffer, const struct kernel_param *kp)
 
 #define param_check_vmidfilter(name, p) __param_check(name, p, void)
 
-static struct kernel_param_ops param_ops_vmidfilter = {
+static const struct kernel_param_ops param_ops_vmidfilter = {
 	.set = param_set_vmidfilter,
 	.get = param_get_vmidfilter,
 };
diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
index 843f2cdc280b..03b02c37d247 100644
--- a/drivers/tty/sysrq.c
+++ b/drivers/tty/sysrq.c
@@ -1002,7 +1002,7 @@ static int sysrq_reset_seq_param_set(const char *buffer,
 	return 0;
 }
 
-static struct kernel_param_ops param_ops_sysrq_reset_seq = {
+static const struct kernel_param_ops param_ops_sysrq_reset_seq = {
 	.get	= param_get_ushort,
 	.set	= sysrq_reset_seq_param_set,
 };
diff --git a/drivers/video/fbdev/uvesafb.c b/drivers/video/fbdev/uvesafb.c
index d32d1c4d1b99..178ae93b7ebd 100644
--- a/drivers/video/fbdev/uvesafb.c
+++ b/drivers/video/fbdev/uvesafb.c
@@ -1977,7 +1977,7 @@ static int param_set_scroll(const char *val, const struct kernel_param *kp)
 
 	return 0;
 }
-static struct kernel_param_ops param_ops_scroll = {
+static const struct kernel_param_ops param_ops_scroll = {
 	.set = param_set_scroll,
 };
 #define param_check_scroll(name, p) __param_check(name, p, void)
diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c
index 7a5e60dea6c5..10189b5b627f 100644
--- a/drivers/virtio/virtio_mmio.c
+++ b/drivers/virtio/virtio_mmio.c
@@ -691,7 +691,7 @@ static int vm_cmdline_get(char *buffer, const struct kernel_param *kp)
 	return strlen(buffer) + 1;
 }
 
-static struct kernel_param_ops vm_cmdline_param_ops = {
+static const struct kernel_param_ops vm_cmdline_param_ops = {
 	.set = vm_cmdline_set,
 	.get = vm_cmdline_get,
 };
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index f175b833b6ba..aa62004f1706 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2847,7 +2847,7 @@ static int param_set_portnr(const char *val, const struct kernel_param *kp)
 	*((unsigned int *)kp->arg) = num;
 	return 0;
 }
-static struct kernel_param_ops param_ops_portnr = {
+static const struct kernel_param_ops param_ops_portnr = {
 	.set = param_set_portnr,
 	.get = param_get_uint,
 };
diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h
index 1c9effa25e26..5d0f4d97997f 100644
--- a/include/linux/moduleparam.h
+++ b/include/linux/moduleparam.h
@@ -225,7 +225,7 @@ struct kparam_array
 
 /* Obsolete - use module_param_cb() */
 #define module_param_call(name, set, get, arg, perm)			\
-	static struct kernel_param_ops __param_ops_##name =		\
+	static const struct kernel_param_ops __param_ops_##name =		\
 		{ .flags = 0, (void *)set, (void *)get };		\
 	__module_param_call(MODULE_PARAM_PREFIX,			\
 			    name, &__param_ops_##name, arg,		\
@@ -376,64 +376,64 @@ static inline void destroy_params(const struct kernel_param *params,
 #define __param_check(name, p, type) \
 	static inline type __always_unused *__check_##name(void) { return(p); }
 
-extern struct kernel_param_ops param_ops_byte;
+extern const struct kernel_param_ops param_ops_byte;
 extern int param_set_byte(const char *val, const struct kernel_param *kp);
 extern int param_get_byte(char *buffer, const struct kernel_param *kp);
 #define param_check_byte(name, p) __param_check(name, p, unsigned char)
 
-extern struct kernel_param_ops param_ops_short;
+extern const struct kernel_param_ops param_ops_short;
 extern int param_set_short(const char *val, const struct kernel_param *kp);
 extern int param_get_short(char *buffer, const struct kernel_param *kp);
 #define param_check_short(name, p) __param_check(name, p, short)
 
-extern struct kernel_param_ops param_ops_ushort;
+extern const struct kernel_param_ops param_ops_ushort;
 extern int param_set_ushort(const char *val, const struct kernel_param *kp);
 extern int param_get_ushort(char *buffer, const struct kernel_param *kp);
 #define param_check_ushort(name, p) __param_check(name, p, unsigned short)
 
-extern struct kernel_param_ops param_ops_int;
+extern const struct kernel_param_ops param_ops_int;
 extern int param_set_int(const char *val, const struct kernel_param *kp);
 extern int param_get_int(char *buffer, const struct kernel_param *kp);
 #define param_check_int(name, p) __param_check(name, p, int)
 
-extern struct kernel_param_ops param_ops_uint;
+extern const struct kernel_param_ops param_ops_uint;
 extern int param_set_uint(const char *val, const struct kernel_param *kp);
 extern int param_get_uint(char *buffer, const struct kernel_param *kp);
 #define param_check_uint(name, p) __param_check(name, p, unsigned int)
 
-extern struct kernel_param_ops param_ops_long;
+extern const struct kernel_param_ops param_ops_long;
 extern int param_set_long(const char *val, const struct kernel_param *kp);
 extern int param_get_long(char *buffer, const struct kernel_param *kp);
 #define param_check_long(name, p) __param_check(name, p, long)
 
-extern struct kernel_param_ops param_ops_ulong;
+extern const struct kernel_param_ops param_ops_ulong;
 extern int param_set_ulong(const char *val, const struct kernel_param *kp);
 extern int param_get_ulong(char *buffer, const struct kernel_param *kp);
 #define param_check_ulong(name, p) __param_check(name, p, unsigned long)
 
-extern struct kernel_param_ops param_ops_ullong;
+extern const struct kernel_param_ops param_ops_ullong;
 extern int param_set_ullong(const char *val, const struct kernel_param *kp);
 extern int param_get_ullong(char *buffer, const struct kernel_param *kp);
 #define param_check_ullong(name, p) __param_check(name, p, unsigned long long)
 
-extern struct kernel_param_ops param_ops_charp;
+extern const struct kernel_param_ops param_ops_charp;
 extern int param_set_charp(const char *val, const struct kernel_param *kp);
 extern int param_get_charp(char *buffer, const struct kernel_param *kp);
 #define param_check_charp(name, p) __param_check(name, p, char *)
 
 /* We used to allow int as well as bool.  We're taking that away! */
-extern struct kernel_param_ops param_ops_bool;
+extern const struct kernel_param_ops param_ops_bool;
 extern int param_set_bool(const char *val, const struct kernel_param *kp);
 extern int param_get_bool(char *buffer, const struct kernel_param *kp);
 #define param_check_bool(name, p) __param_check(name, p, bool)
 
-extern struct kernel_param_ops param_ops_invbool;
+extern const struct kernel_param_ops param_ops_invbool;
 extern int param_set_invbool(const char *val, const struct kernel_param *kp);
 extern int param_get_invbool(char *buffer, const struct kernel_param *kp);
 #define param_check_invbool(name, p) __param_check(name, p, bool)
 
 /* An int, which can only be set like a bool (though it shows as an int). */
-extern struct kernel_param_ops param_ops_bint;
+extern const struct kernel_param_ops param_ops_bint;
 extern int param_set_bint(const char *val, const struct kernel_param *kp);
 #define param_get_bint param_get_int
 #define param_check_bint param_check_int
@@ -477,9 +477,9 @@ extern int param_set_bint(const char *val, const struct kernel_param *kp);
 			    perm, -1, 0);				\
 	__MODULE_PARM_TYPE(name, "array of " #type)
 
-extern struct kernel_param_ops param_array_ops;
+extern const struct kernel_param_ops param_array_ops;
 
-extern struct kernel_param_ops param_ops_string;
+extern const struct kernel_param_ops param_ops_string;
 extern int param_set_copystring(const char *val, const struct kernel_param *);
 extern int param_get_string(char *buffer, const struct kernel_param *kp);
 
diff --git a/kernel/params.c b/kernel/params.c
index a22d6a759b1a..b7635c025e9b 100644
--- a/kernel/params.c
+++ b/kernel/params.c
@@ -251,7 +251,7 @@ char *parse_args(const char *doing,
 		return scnprintf(buffer, PAGE_SIZE, format,		\
 				*((type *)kp->arg));			\
 	}								\
-	struct kernel_param_ops param_ops_##name = {			\
+	const struct kernel_param_ops param_ops_##name = {			\
 		.set = param_set_##name,				\
 		.get = param_get_##name,				\
 	};								\
@@ -303,7 +303,7 @@ static void param_free_charp(void *arg)
 	maybe_kfree_parameter(*((char **)arg));
 }
 
-struct kernel_param_ops param_ops_charp = {
+const struct kernel_param_ops param_ops_charp = {
 	.set = param_set_charp,
 	.get = param_get_charp,
 	.free = param_free_charp,
@@ -328,7 +328,7 @@ int param_get_bool(char *buffer, const struct kernel_param *kp)
 }
 EXPORT_SYMBOL(param_get_bool);
 
-struct kernel_param_ops param_ops_bool = {
+const struct kernel_param_ops param_ops_bool = {
 	.flags = KERNEL_PARAM_OPS_FL_NOARG,
 	.set = param_set_bool,
 	.get = param_get_bool,
@@ -356,7 +356,7 @@ int param_get_invbool(char *buffer, const struct kernel_param *kp)
 }
 EXPORT_SYMBOL(param_get_invbool);
 
-struct kernel_param_ops param_ops_invbool = {
+const struct kernel_param_ops param_ops_invbool = {
 	.set = param_set_invbool,
 	.get = param_get_invbool,
 };
@@ -379,7 +379,7 @@ int param_set_bint(const char *val, const struct kernel_param *kp)
 }
 EXPORT_SYMBOL(param_set_bint);
 
-struct kernel_param_ops param_ops_bint = {
+const struct kernel_param_ops param_ops_bint = {
 	.flags = KERNEL_PARAM_OPS_FL_NOARG,
 	.set = param_set_bint,
 	.get = param_get_int,
@@ -476,7 +476,7 @@ static void param_array_free(void *arg)
 			arr->ops->free(arr->elem + arr->elemsize * i);
 }
 
-struct kernel_param_ops param_array_ops = {
+const struct kernel_param_ops param_array_ops = {
 	.set = param_array_set,
 	.get = param_array_get,
 	.free = param_array_free,
@@ -504,7 +504,7 @@ int param_get_string(char *buffer, const struct kernel_param *kp)
 }
 EXPORT_SYMBOL(param_get_string);
 
-struct kernel_param_ops param_ops_string = {
+const struct kernel_param_ops param_ops_string = {
 	.set = param_set_copystring,
 	.get = param_get_string,
 };
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index 47f38be4155f..02f53674dc39 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -72,7 +72,7 @@ static int param_get_hashtbl_sz(char *buffer, const struct kernel_param *kp)
 
 #define param_check_hashtbl_sz(name, p) __param_check(name, p, unsigned int);
 
-static struct kernel_param_ops param_ops_hashtbl_sz = {
+static const struct kernel_param_ops param_ops_hashtbl_sz = {
 	.set = param_set_hashtbl_sz,
 	.get = param_get_hashtbl_sz,
 };
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 66891e32c5e3..b0517287075b 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -2982,7 +2982,7 @@ static int param_set_portnr(const char *val, const struct kernel_param *kp)
 			RPC_MAX_RESVPORT);
 }
 
-static struct kernel_param_ops param_ops_portnr = {
+static const struct kernel_param_ops param_ops_portnr = {
 	.set = param_set_portnr,
 	.get = param_get_uint,
 };
@@ -3001,7 +3001,7 @@ static int param_set_slot_table_size(const char *val,
 			RPC_MAX_SLOT_TABLE);
 }
 
-static struct kernel_param_ops param_ops_slot_table_size = {
+static const struct kernel_param_ops param_ops_slot_table_size = {
 	.set = param_set_slot_table_size,
 	.get = param_get_uint,
 };
@@ -3017,7 +3017,7 @@ static int param_set_max_slot_table_size(const char *val,
 			RPC_MAX_SLOT_TABLE_LIMIT);
 }
 
-static struct kernel_param_ops param_ops_max_slot_table_size = {
+static const struct kernel_param_ops param_ops_max_slot_table_size = {
 	.set = param_set_max_slot_table_size,
 	.get = param_get_uint,
 };
diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
index e5f1561439db..45eb96d1e1d9 100644
--- a/security/apparmor/lsm.c
+++ b/security/apparmor/lsm.c
@@ -667,7 +667,7 @@ static struct security_operations apparmor_ops = {
 static int param_set_aabool(const char *val, const struct kernel_param *kp);
 static int param_get_aabool(char *buffer, const struct kernel_param *kp);
 #define param_check_aabool param_check_bool
-static struct kernel_param_ops param_ops_aabool = {
+static const struct kernel_param_ops param_ops_aabool = {
 	.flags = KERNEL_PARAM_OPS_FL_NOARG,
 	.set = param_set_aabool,
 	.get = param_get_aabool
@@ -676,7 +676,7 @@ static struct kernel_param_ops param_ops_aabool = {
 static int param_set_aauint(const char *val, const struct kernel_param *kp);
 static int param_get_aauint(char *buffer, const struct kernel_param *kp);
 #define param_check_aauint param_check_uint
-static struct kernel_param_ops param_ops_aauint = {
+static const struct kernel_param_ops param_ops_aauint = {
 	.set = param_set_aauint,
 	.get = param_get_aauint
 };
@@ -684,7 +684,7 @@ static struct kernel_param_ops param_ops_aauint = {
 static int param_set_aalockpolicy(const char *val, const struct kernel_param *kp);
 static int param_get_aalockpolicy(char *buffer, const struct kernel_param *kp);
 #define param_check_aalockpolicy param_check_bool
-static struct kernel_param_ops param_ops_aalockpolicy = {
+static const struct kernel_param_ops param_ops_aalockpolicy = {
 	.flags = KERNEL_PARAM_OPS_FL_NOARG,
 	.set = param_set_aalockpolicy,
 	.get = param_get_aalockpolicy
diff --git a/security/integrity/ima/ima_crypto.c b/security/integrity/ima/ima_crypto.c
index 686355fea7fd..e24121afb2f2 100644
--- a/security/integrity/ima/ima_crypto.c
+++ b/security/integrity/ima/ima_crypto.c
@@ -55,7 +55,7 @@ static int param_set_bufsize(const char *val, const struct kernel_param *kp)
 	return 0;
 }
 
-static struct kernel_param_ops param_ops_bufsize = {
+static const struct kernel_param_ops param_ops_bufsize = {
 	.set = param_set_bufsize,
 	.get = param_get_uint,
 };
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 34040d26c94f..23a1d2ffa7f3 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -166,7 +166,7 @@ MODULE_PARM_DESC(beep_mode, "Select HDA Beep registration mode "
 
 #ifdef CONFIG_PM
 static int param_set_xint(const char *val, const struct kernel_param *kp);
-static struct kernel_param_ops param_ops_xint = {
+static const struct kernel_param_ops param_ops_xint = {
 	.set = param_set_xint,
 	.get = param_get_int,
 };
-- 
cgit v1.2.3


From 5f0ee9d17aae628b22be86966471db65be21f262 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@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

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.

Cc: stable@vger.kernel.org
Reported-and-tested-by: David Zafra Gómez <dezeta@klo.es>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 drivers/input/mouse/elantech.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'drivers/input/mouse')

diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index 79363b687195..f181d73d9629 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -1376,10 +1376,11 @@ 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++)
-- 
cgit v1.2.3


From 692dd1916436164e228608803dfb6cb768d6355a Mon Sep 17 00:00:00 2001
From: 洪一竹 <sam.hung@emc.com.tw>
Date: Thu, 4 Jun 2015 22:00:24 -0700
Subject: Input: elantech - add new icbody type

This adds new icbody type to the list recognized by Elantech PS/2 driver.

Cc: stable@vger.kernel.org
Signed-off-by: Sam Hung <sam.hung@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 drivers/input/mouse/elantech.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'drivers/input/mouse')

diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index f181d73d9629..ce3d40004458 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -1556,6 +1556,7 @@ static int elantech_set_properties(struct elantech_data *etd)
 		case 9:
 		case 10:
 		case 13:
+		case 14:
 			etd->hw_version = 4;
 			break;
 		default:
-- 
cgit v1.2.3


From 088df2ccef75754cc16a6ba31829d23bcb2b68ed Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Thu, 4 Jun 2015 22:31:43 -0700
Subject: Input: alps - do not reduce trackpoint speed by half

On some v7 devices (e.g. Lenovo-E550) the deltas reported are typically
only in the 0-1 range dividing this by 2 results in a range of 0-0.

And even for v7 devices where this does not lead to making the trackstick
entirely unusable, it makes it twice as slow as before we added v7 support
and were using the ps/2 mouse emulation of the dual point setup.

If some kind of generic slowdown is actually necessary for some devices,
then that belongs in userspace, not in the kernel.

Cc: stable@vger.kernel.org
Reported-and-tested-by: Rico Moorman <rico.moorman@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 drivers/input/mouse/alps.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

(limited to 'drivers/input/mouse')

diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index 7752bd59d4b7..a353b7de6d22 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -1063,9 +1063,8 @@ static void alps_process_trackstick_packet_v7(struct psmouse *psmouse)
 	right = (packet[1] & 0x02) >> 1;
 	middle = (packet[1] & 0x04) >> 2;
 
-	/* Divide 2 since trackpoint's speed is too fast */
-	input_report_rel(dev2, REL_X, (char)x / 2);
-	input_report_rel(dev2, REL_Y, -((char)y / 2));
+	input_report_rel(dev2, REL_X, (char)x);
+	input_report_rel(dev2, REL_Y, -((char)y));
 
 	input_report_key(dev2, BTN_LEFT, left);
 	input_report_key(dev2, BTN_RIGHT, right);
-- 
cgit v1.2.3


From 7f2ca8b55aeff1fe51ed3570200ef88a96060917 Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Mon, 8 Jun 2015 10:17:32 -0700
Subject: Input: synaptics - add min/max quirk for Lenovo S540

https://bugzilla.redhat.com/show_bug.cgi?id=1223051#c2

Cc: stable@vger.kernel.org
Tested-by: tommy.gagnes@gmail.com
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 drivers/input/mouse/synaptics.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'drivers/input/mouse')

diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 630af73e98c4..35c8d0ceabee 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -150,6 +150,11 @@ static const struct min_max_quirk min_max_pnpid_table[] = {
 		{ANY_BOARD_ID, 2961},
 		1024, 5112, 2024, 4832
 	},
+	{
+		(const char * const []){"LEN2000", NULL},
+		{ANY_BOARD_ID, ANY_BOARD_ID},
+		1024, 5113, 2021, 4832
+	},
 	{
 		(const char * const []){"LEN2001", NULL},
 		{ANY_BOARD_ID, ANY_BOARD_ID},
@@ -191,7 +196,7 @@ static const char * const topbuttonpad_pnp_ids[] = {
 	"LEN0045",
 	"LEN0047",
 	"LEN0049",
-	"LEN2000",
+	"LEN2000", /* S540 */
 	"LEN2001", /* Edge E431 */
 	"LEN2002", /* Edge E531 */
 	"LEN2003",
-- 
cgit v1.2.3


From 539c4b88146cc320aee18b08ebb43ab57d523dcc Mon Sep 17 00:00:00 2001
From: duson <dusonlin@emc.com.tw>
Date: Tue, 7 Jul 2015 10:25:39 -0700
Subject: Input: elan_i2c - change the hover event from MT to ST

The firmware only reports hover condition while the very first contact is
approaching the surface; the hover is not reported for the subsequent
contacts. Therefore we should not be using ABS_MT_DISTANCE to report hover
but rather its single-touch counterpart ABS_DISTANCE.

Signed-off-by: Duson Lin <dusonlin@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 drivers/input/mouse/elan_i2c_core.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

(limited to 'drivers/input/mouse')

diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c
index 62641f2adaf7..5b5f403d8ce6 100644
--- a/drivers/input/mouse/elan_i2c_core.c
+++ b/drivers/input/mouse/elan_i2c_core.c
@@ -771,7 +771,7 @@ static const struct attribute_group *elan_sysfs_groups[] = {
  */
 static void elan_report_contact(struct elan_tp_data *data,
 				int contact_num, bool contact_valid,
-				bool hover_event, u8 *finger_data)
+				u8 *finger_data)
 {
 	struct input_dev *input = data->input;
 	unsigned int pos_x, pos_y;
@@ -815,9 +815,7 @@ static void elan_report_contact(struct elan_tp_data *data,
 		input_mt_report_slot_state(input, MT_TOOL_FINGER, true);
 		input_report_abs(input, ABS_MT_POSITION_X, pos_x);
 		input_report_abs(input, ABS_MT_POSITION_Y, data->max_y - pos_y);
-		input_report_abs(input, ABS_MT_DISTANCE, hover_event);
-		input_report_abs(input, ABS_MT_PRESSURE,
-				 hover_event ? 0 : scaled_pressure);
+		input_report_abs(input, ABS_MT_PRESSURE, scaled_pressure);
 		input_report_abs(input, ABS_TOOL_WIDTH, mk_x);
 		input_report_abs(input, ABS_MT_TOUCH_MAJOR, major);
 		input_report_abs(input, ABS_MT_TOUCH_MINOR, minor);
@@ -839,14 +837,14 @@ static void elan_report_absolute(struct elan_tp_data *data, u8 *packet)
 	hover_event = hover_info & 0x40;
 	for (i = 0; i < ETP_MAX_FINGERS; i++) {
 		contact_valid = tp_info & (1U << (3 + i));
-		elan_report_contact(data, i, contact_valid, hover_event,
-				    finger_data);
+		elan_report_contact(data, i, contact_valid, finger_data);
 
 		if (contact_valid)
 			finger_data += ETP_FINGER_DATA_LEN;
 	}
 
 	input_report_key(input, BTN_LEFT, tp_info & 0x01);
+	input_report_abs(input, ABS_DISTANCE, hover_event != 0);
 	input_mt_report_pointer_emulation(input, true);
 	input_sync(input);
 }
@@ -922,6 +920,7 @@ static int elan_setup_input_device(struct elan_tp_data *data)
 	input_abs_set_res(input, ABS_Y, data->y_res);
 	input_set_abs_params(input, ABS_PRESSURE, 0, ETP_MAX_PRESSURE, 0, 0);
 	input_set_abs_params(input, ABS_TOOL_WIDTH, 0, ETP_FINGER_WIDTH, 0, 0);
+	input_set_abs_params(input, ABS_DISTANCE, 0, 1, 0, 0);
 
 	/* And MT parameters */
 	input_set_abs_params(input, ABS_MT_POSITION_X, 0, data->max_x, 0, 0);
@@ -934,7 +933,6 @@ static int elan_setup_input_device(struct elan_tp_data *data)
 			     ETP_FINGER_WIDTH * max_width, 0, 0);
 	input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0,
 			     ETP_FINGER_WIDTH * min_width, 0, 0);
-	input_set_abs_params(input, ABS_MT_DISTANCE, 0, 1, 0, 0);
 
 	data->input = input;
 
-- 
cgit v1.2.3


From dbf3c370862d73fcd2c74ca55e254bb02143238d Mon Sep 17 00:00:00 2001
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: Fri, 10 Jul 2015 10:11:07 -0700
Subject: Revert "Input: synaptics - allocate 3 slots to keep stability in
 image sensors"

This reverts commit 63c4fda3c0bb841b1aad1298fc7fe94058fc79f8 as it
causes issues with detecting 3-finger taps.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=100481
Cc: stable@vger.kernel.org
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
---
 drivers/input/mouse/synaptics.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/input/mouse')

diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 35c8d0ceabee..3a32caf06bf1 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -1199,7 +1199,7 @@ static void set_input_params(struct psmouse *psmouse,
 					ABS_MT_POSITION_Y);
 		/* Image sensors can report per-contact pressure */
 		input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
-		input_mt_init_slots(dev, 3, INPUT_MT_POINTER | INPUT_MT_TRACK);
+		input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK);
 
 		/* Image sensors can signal 4 and 5 finger clicks */
 		__set_bit(BTN_TOOL_QUADTAP, dev->keybit);
-- 
cgit v1.2.3