[PATCH 4/5] hid-input: Use a larger event buffer for MT devices
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From: Henrik Rydberg on 23 Jun 2010 07:20 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 <rydberg(a)euromail.se> --- drivers/hid/hid-input.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index 7a0d2e4..69d152e 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 && -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |