[PATCH v2 2/8] input: goodix: fix variable length array warning

Irina Tirdea
2015-06-08T14:40:04Z

Fix sparse warning:
drivers/input/touchscreen/goodix.c:182:26: warning:
Variable length array is used.

Replace the variable length array with fixed length.

Some Goodix devices have maximum 5 touch points, while
others have 10 touch points. Using the maximum length
(80 bytes) for all devices will lead to wasting 40 bytes
when using devices with maximum 5 touch points. However,
that is prefferable to using kmalloc which will use even
more resources.

Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
---
drivers/input/touchscreen/goodix.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/touchscreen/goodix.c b/drivers/input/touchscreen/goodix.c
index a65e4d9..18557e4 100644
--- a/drivers/input/touchscreen/goodix.c
+++ b/drivers/input/touchscreen/goodix.c
@@ -147,7 +147,7 @@ static void goodix_ts_report_touch(struct goodix_ts_data *ts, u8 *coor_data)
*/
static void goodix_process_events(struct goodix_ts_data *ts)
{
- u8 point_data[1 + GOODIX_CONTACT_SIZE * ts->max_touch_num];
+ u8 point_data[1 + GOODIX_CONTACT_SIZE * GOODIX_MAX_CONTACTS];
int touch_num;
int i;

--
1.9.1