Commit 01a9c2da authored Dec 13, 2014 by Anshul Garg Committed by Matt Wagantall Aug 17, 2015

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.

Change-Id: I913be1e5356d5ca7d3047e6b0413069993c2921c
Signed-off-by: Anshul Garg <anshul.g@samsung.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Git-commit: baf332c0f1cede26e9c2af6276b36b4c3a36e34a
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: Matt Wagantall <mattw@codeaurora.org>

parent ef0d0e07

drivers/input/input.c

+13 −9

Original line number	Diff line number	Diff line
		@@ -1980,6 +1980,7 @@ 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))
		@@ -1988,10 +1989,13 @@ 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;