Fixes the following W=1 kernel build warning(s):

 drivers/input/touchscreen/surface3_spi.c: In function ‘surface3_spi_process_touch’:
 drivers/input/touchscreen/surface3_spi.c:97:6: warning: variable ‘timestamp’ set but not used [-Wunused-but-set-variable]
 drivers/input/touchscreen/surface3_spi.c:225: warning: Function parameter or member 'data' not described in 'surface3_spi_get_gpio_config'
 drivers/input/touchscreen/surface3_spi.c:225: warning: Excess function parameter 'ts' description in 'surface3_spi_get_gpio_config'

Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Henrik Rydberg <rydberg@bitmath.org>
Cc: Lee Jones <redacted>
Cc: Benjamin Tissoires <redacted>
Cc: linux-input@vger.kernel.org
Signed-off-by: Lee Jones <redacted>
---
 drivers/input/touchscreen/surface3_spi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/touchscreen/surface3_spi.c b/drivers/input/touchscreen/surface3_spi.c
index 72dc4c562a4e1..1da23e5585a0d 100644
--- a/drivers/input/touchscreen/surface3_spi.c
+++ b/drivers/input/touchscreen/surface3_spi.c

@@ -217,7 +217,7 @@ static void surface3_spi_power(struct surface3_ts_data *data, bool on)
 /**
  * surface3_spi_get_gpio_config - Get GPIO config from ACPI/DT
  *
- * @ts: surface3_spi_ts_data pointer
+ * @data: surface3_spi_ts_data pointer
  */
 static int surface3_spi_get_gpio_config(struct surface3_ts_data *data)
 {

-- 
2.25.1