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Commit baf332c0 authored by Anshul Garg's avatar Anshul Garg Committed by Dmitry Torokhov
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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: default avatarAnshul Garg <anshul.g@samsung.com>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 189387f9

drivers/input/input.c

+13 −9
Original line number Diff line number Diff line
@@ -1974,6 +1974,7 @@ static unsigned int input_estimate_events_per_packet(struct input_dev *dev) 


	events = mt_slots + 1; /* count SYN_MT_REPORT and SYN_REPORT */



	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))
@@ -1982,10 +1983,13 @@ static unsigned int input_estimate_events_per_packet(struct input_dev *dev) 
					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;