HID: i2c-hid: fix return paths

Forwards appropriate return values.
As noone use the error returned by i2c_hid_get_input, let's make it
returning void.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Reviewed-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/i2c-hid/i2c-hid.c

@@ -244,7 +244,7 @@ static int i2c_hid_get_report(struct i2c_client *client, u8 reportType,
 	if (ret) {
 		dev_err(&client->dev,
 			"failed to retrieve report from device.\n");
-		return -EINVAL;
+		return ret;
 	}
 
 	return 0;
@@ -289,7 +289,7 @@ static int i2c_hid_set_report(struct i2c_client *client, u8 reportType,
 		reportType, args, args_len, NULL, 0);
 	if (ret) {
 		dev_err(&client->dev, "failed to set a report to device.\n");
-		return -EINVAL;
+		return ret;
 	}
 
 	return data_len;
@@ -333,7 +333,7 @@ static int i2c_hid_hwreset(struct i2c_client *client)
 	return 0;
 }
 
-static int i2c_hid_get_input(struct i2c_hid *ihid)
+static void i2c_hid_get_input(struct i2c_hid *ihid)
 {
 	int ret, ret_size;
 	int size = le16_to_cpu(ihid->hdesc.wMaxInputLength);
@@ -341,11 +341,11 @@ static int i2c_hid_get_input(struct i2c_hid *ihid)
 	ret = i2c_master_recv(ihid->client, ihid->inbuf, size);
 	if (ret != size) {
 		if (ret < 0)
-			return ret;
+			return;
 
 		dev_err(&ihid->client->dev, "%s: got %d data instead of %d\n",
 			__func__, ret, size);
-		return ret;
+		return;
 	}
 
 	ret_size = ihid->inbuf[0] | ihid->inbuf[1] << 8;
@@ -354,13 +354,13 @@ static int i2c_hid_get_input(struct i2c_hid *ihid)
 		/* host or device initiated RESET completed */
 		if (test_and_clear_bit(I2C_HID_RESET_PENDING, &ihid->flags))
 			wake_up(&ihid->wait);
-		return 0;
+		return;
 	}
 
 	if (ret_size > size) {
 		dev_err(&ihid->client->dev, "%s: incomplete report (%d/%d)\n",
 			__func__, size, ret_size);
-		return -EIO;
+		return;
 	}
 
 	i2c_hid_dbg(ihid, "input: %*ph\n", ret_size, ihid->inbuf);
@@ -369,7 +369,7 @@ static int i2c_hid_get_input(struct i2c_hid *ihid)
 		hid_input_report(ihid->hid, HID_INPUT_REPORT, ihid->inbuf + 2,
 				ret_size - 2, 1);
 
-	return 0;
+	return;
 }
 
 static irqreturn_t i2c_hid_irq(int irq, void *dev_id)
@@ -429,8 +429,10 @@ static void i2c_hid_init_reports(struct hid_device *hid)
 	struct i2c_hid *ihid = i2c_get_clientdata(client);
 	u8 *inbuf = kzalloc(ihid->bufsize, GFP_KERNEL);
 
-	if (!inbuf)
+	if (!inbuf) {
+		dev_err(&client->dev, "can not retrieve initial reports\n");
 		return;
+	}
 
 	list_for_each_entry(report,
 		&hid->report_enum[HID_INPUT_REPORT].report_list, list)
@@ -714,9 +716,7 @@ static int i2c_hid_hidinput_input_event(struct input_dev *dev,
 		return -1;
 	}
 
-	hid_set_field(field, offset, value);
-
-	return 0;
+	return hid_set_field(field, offset, value);
 }
 
 static struct hid_ll_driver i2c_hid_ll_driver = {