From: Anshul Garg <anshul.g@xxxxxxxxxxx>
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@xxxxxxxxxxx>
---
drivers/input/input.c | 22 +++++++++++++---------
1 file changed, 13 insertions(+), 9 deletions(-)
diff --git a/drivers/input/input.c b/drivers/input/input.c
index 29ca0bb..8172296 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -1973,18 +1973,22 @@ 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;
--
1.7.9.5
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