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| author |   Anshul Garg <anshul.g@samsung.com> | 2014-12-13 11:58:23 -0800 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-12-15 21:45:55 -0800 |
| commit | baf332c0f1cede26e9c2af6276b36b4c3a36e34a (patch) | |
| tree | e1b1c89c0d056b1e00865a6bdb4dd58e0e46e0d8 | |
| parent | Input: edt-ft5x06 - fixed a macro coding style issue (diff) | |
| download | linux-dev-baf332c0f1cede26e9c2af6276b36b4c3a36e34a.tar.xz linux-dev-baf332c0f1cede26e9c2af6276b36b4c3a36e34a.zip | |
Input: optimize events_per_packet count calculation
This patch avoids unnecessary operations while estimating events per
packet for an input device when event type is not set.
Signed-off-by: Anshul Garg <anshul.g@samsung.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
| -rw-r--r-- | drivers/input/input.c | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c index 04217c2e345c..213e3a1903ee 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -1974,18 +1974,22 @@ static unsigned int input_estimate_events_per_packet(struct input_dev *dev) events = mt_slots + 1; /* count SYN_MT_REPORT and SYN_REPORT */ - for (i = 0; i < ABS_CNT; i++) { - if (test_bit(i, dev->absbit)) { - if (input_is_mt_axis(i)) - events += mt_slots; - else - events++; + if (test_bit(EV_ABS, dev->evbit)) { + for (i = 0; i < ABS_CNT; i++) { + if (test_bit(i, dev->absbit)) { + if (input_is_mt_axis(i)) + events += mt_slots; + else + events++; + } } } - for (i = 0; i < REL_CNT; i++) - if (test_bit(i, dev->relbit)) - events++; + if (test_bit(EV_REL, dev->evbit)) { + for (i = 0; i < REL_CNT; i++) + if (test_bit(i, dev->relbit)) + events++; + } /* Make room for KEY and MSC events */ events += 7; |