1 files changed, 24 insertions, 47 deletions

diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c
index 47af62c12267..d4eb59b55bf1 100644
--- a/drivers/input/mouse/elan_i2c_core.c
+++ b/drivers/input/mouse/elan_i2c_core.c
@@ -186,55 +186,21 @@ static int elan_get_fwinfo(u16 ic_type, u8 iap_version, u16 *validpage_count,
 	return 0;
 }
 
-static int elan_enable_power(struct elan_tp_data *data)
+static int elan_set_power(struct elan_tp_data *data, bool on)
 {
 	int repeat = ETP_RETRY_COUNT;
 	int error;
 
-	error = regulator_enable(data->vcc);
-	if (error) {
-		dev_err(&data->client->dev,
-			"failed to enable regulator: %d\n", error);
-		return error;
-	}
-
 	do {
-		error = data->ops->power_control(data->client, true);
+		error = data->ops->power_control(data->client, on);
 		if (error >= 0)
 			return 0;
 
 		msleep(30);
 	} while (--repeat > 0);
 
-	dev_err(&data->client->dev, "failed to enable power: %d\n", error);
-	return error;
-}
-
-static int elan_disable_power(struct elan_tp_data *data)
-{
-	int repeat = ETP_RETRY_COUNT;
-	int error;
-
-	do {
-		error = data->ops->power_control(data->client, false);
-		if (!error) {
-			error = regulator_disable(data->vcc);
-			if (error) {
-				dev_err(&data->client->dev,
-					"failed to disable regulator: %d\n",
-					error);
-				/* Attempt to power the chip back up */
-				data->ops->power_control(data->client, true);
-				break;
-			}
-
-			return 0;
-		}
-
-		msleep(30);
-	} while (--repeat > 0);
-
-	dev_err(&data->client->dev, "failed to disable power: %d\n", error);
+	dev_err(&data->client->dev, "failed to set power %s: %d\n",
+		on ? "on" : "off", error);
 	return error;
 }
 
@@ -1345,12 +1311,6 @@ static int elan_probe(struct i2c_client *client,
 		return error;
 	}
 
-	error = devm_device_add_groups(dev, elan_sysfs_groups);
-	if (error) {
-		dev_err(dev, "failed to create sysfs attributes: %d\n", error);
-		return error;
-	}
-
 	error = input_register_device(data->input);
 	if (error) {
 		dev_err(dev, "failed to register input device: %d\n", error);
@@ -1399,9 +1359,19 @@ static int __maybe_unused elan_suspend(struct device *dev)
 		/* Enable wake from IRQ */
 		data->irq_wake = (enable_irq_wake(client->irq) == 0);
 	} else {
-		ret = elan_disable_power(data);
+		ret = elan_set_power(data, false);
+		if (ret)
+			goto err;
+
+		ret = regulator_disable(data->vcc);
+		if (ret) {
+			dev_err(dev, "error %d disabling regulator\n", ret);
+			/* Attempt to power the chip back up */
+			elan_set_power(data, true);
+		}
 	}
 
+err:
 	mutex_unlock(&data->sysfs_mutex);
 	return ret;
 }
@@ -1412,12 +1382,18 @@ static int __maybe_unused elan_resume(struct device *dev)
 	struct elan_tp_data *data = i2c_get_clientdata(client);
 	int error;
 
-	if (device_may_wakeup(dev) && data->irq_wake) {
+	if (!device_may_wakeup(dev)) {
+		error = regulator_enable(data->vcc);
+		if (error) {
+			dev_err(dev, "error %d enabling regulator\n", error);
+			goto err;
+		}
+	} else if (data->irq_wake) {
 		disable_irq_wake(client->irq);
 		data->irq_wake = false;
 	}
 
-	error = elan_enable_power(data);
+	error = elan_set_power(data, true);
 	if (error) {
 		dev_err(dev, "power up when resuming failed: %d\n", error);
 		goto err;
@@ -1460,6 +1436,7 @@ static struct i2c_driver elan_driver = {
 		.acpi_match_table = ACPI_PTR(elan_acpi_id),
 		.of_match_table = of_match_ptr(elan_of_match),
 		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
+		.dev_groups = elan_sysfs_groups,
 	},
 	.probe		= elan_probe,
 	.id_table	= elan_id,