[PATCH 18/24] Revert "platform/x86: ideapad-laptop: Switch touchpad attribute to be RO"

["Barnabás Pőcze" <pobrn@protonmail.com>]

The touchpad can be enabled/disabled via this attribute on a
Lenovo Yoga 520-14IKB. Allow writing as it provides legitimate
functionality.

This reverts commit 7f363145992cebf4ea760447f1cfdf6f81459683.

Signed-off-by: Barnabás Pőcze <pobrn@protonmail.com>

diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index f5a1d7041aab..fda49c236190 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -442,10 +442,9 @@ static ssize_t touchpad_show(struct device *dev,
 	return sysfs_emit(buf, "%lu\n", result);
 }
 
-/* Switch to RO for now: It might be revisited in the future */
-static ssize_t __maybe_unused touchpad_store(struct device *dev,
-					     struct device_attribute *attr,
-					     const char *buf, size_t count)
+static ssize_t touchpad_store(struct device *dev,
+			      struct device_attribute *attr,
+			      const char *buf, size_t count)
 {
 	struct ideapad_private *priv = dev_get_drvdata(dev);
 	bool state;
@@ -461,7 +460,7 @@ static ssize_t __maybe_unused touchpad_store(struct device *dev,
 	return count;
 }
 
-static DEVICE_ATTR_RO(touchpad);
+static DEVICE_ATTR_RW(touchpad);
 
 static ssize_t conservation_mode_show(struct device *dev,
 				struct device_attribute *attr,
-- 
2.29.2