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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>
This commit is contained in:
Anshul Garg 2014-12-13 11:58:23 -08:00 committed by Dmitry Torokhov
parent 189387f9e0
commit baf332c0f1
1 changed files with 13 additions and 9 deletions
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22
drivers/input/input.c
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@ -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;