From: Henrik Rydberg Date: Wed, 23 Jun 2010 16:31:37 +0000 (-0700) Subject: Input: hid-input - use a larger event buffer for MT devices X-Git-Tag: firefly_0821_release~9833^2~1027^2~1^2~48 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=6967b4d9de4a7cf3b00cd9a93981d3206d75a1d8;p=firefly-linux-kernel-4.4.55.git Input: hid-input - use a larger event buffer for MT devices The MT devices produce a lot of data. Tell the underlying input device approximately how many events will be sent per synchronization, to allow for better buffering. The number is a template based on continuously reporting details for each finger on a single hand. Signed-off-by: Henrik Rydberg Acked-by: Jiri Kosina Signed-off-by: Dmitry Torokhov --- diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index 7a0d2e4661a1..69d152e16a6a 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -534,6 +534,9 @@ mapped: input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); else input_set_abs_params(input, usage->code, a, b, 0, 0); + /* use a larger default input buffer for MT devices */ + if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) + input_set_events_per_packet(input, 60); } if (usage->type == EV_ABS &&