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| author |   Irina Tirdea <irina.tirdea@intel.com> | 2015-06-09 11:03:15 -0700 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-06-09 11:23:26 -0700 |
| commit | 0e0432f04ee5d73b45faefc7bbb63b75fcaefa42 (patch) | |
| tree | aa69288f15d3fde705ed2810917d6026935d703e | |
| parent | Input: goodix - fix alignment issues (diff) | |
| download | linux-dev-0e0432f04ee5d73b45faefc7bbb63b75fcaefa42.tar.xz linux-dev-0e0432f04ee5d73b45faefc7bbb63b75fcaefa42.zip | |
Input: goodix - fix variable length array warning
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 on stack when using devices with maximum 5 touch points.
However, that is preferable to using kmalloc which will use even more
resources.
Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Acked-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
| -rw-r--r-- | drivers/input/touchscreen/goodix.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/input/touchscreen/goodix.c b/drivers/input/touchscreen/goodix.c index 099fc466bd16..6457033439d5 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; |