Revert "ideapad-laptop: Disable touchpad interface on Yoga models"

I've received a bug report from a user that the touchpad control part
of the ideapad-laptop ACPI interface does work for him on his
"Lenovo Yoga 2 13", and that this patch causes a regression for him.

Since it did not work for me when I had a "Lenovo Yoga 2 11" in my own
hands (loaned from a friend). It seems that this is a bit of hit and miss.

Since the result of having a false positive here is worse, then the minor
annoyance of a false touchpad disabled messages being shown after suspend /
resume on models (or is it firmware versions?) where the interface does not
work, simply revert the patch.

This reverts commit f79a901331a823ae370584b15cd39dd110b95a0a.

Reported-by: GOESSEL Guillaume <g_goessel@outlook.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>

diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index fc468a3..de1e0c3 100644 (file)
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -88,7 +88,6 @@ struct ideapad_private {
        struct dentry *debug;
        unsigned long cfg;
        bool has_hw_rfkill_switch;
-       bool has_touchpad_control;
 };
 
 static bool no_bt_rfkill;
@@ -767,9 +766,6 @@ static void ideapad_sync_touchpad_state(struct ideapad_private *priv)
 {
        unsigned long value;
 
-       if (!priv->has_touchpad_control)
-               return;
-
        /* Without reading from EC touchpad LED doesn't switch state */
        if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value)) {
                /* Some IdeaPads don't really turn off touchpad - they only
@@ -844,28 +840,6 @@ static struct dmi_system_id no_hw_rfkill_list[] = {
        {}
 };
 
-/*
- * Some models don't offer touchpad ctrl through the ideapad interface, causing
- * ideapad_sync_touchpad_state to send wrong touchpad enable/disable events.
- */
-static struct dmi_system_id no_touchpad_ctrl_list[] = {
-       {
-               .ident = "Lenovo Yoga 1 series",
-               .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-                       DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo IdeaPad Yoga"),
-               },
-       },
-       {
-               .ident = "Lenovo Yoga 2 11 / 13 / Pro",
-               .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-                       DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 2"),
-               },
-       },
-       {}
-};
-
 static int ideapad_acpi_add(struct platform_device *pdev)
 {
        int ret, i;
@@ -889,7 +863,6 @@ static int ideapad_acpi_add(struct platform_device *pdev)
        priv->adev = adev;
        priv->platform_device = pdev;
        priv->has_hw_rfkill_switch = !dmi_check_system(no_hw_rfkill_list);
-       priv->has_touchpad_control = !dmi_check_system(no_touchpad_ctrl_list);
 
        ret = ideapad_sysfs_init(priv);
        if (ret)