From 486b908d4412510d66ee348ba765de8d93441345 Mon Sep 17 00:00:00 2001 From: Ping Cheng Date: Fri, 20 Feb 2015 14:25:58 -0800 Subject: [PATCH] HID: wacom: do not send pen events before touch is up/forced out If pen comes in proximity while touch is down, we force touch up before sending pen events. Otherwise, there can be unfinished touch events compete with pen events. This idea has been fully implemented for Tablet PCs. But other tablets that support both pen and touch are not fully considered. Signed-off-by: Ping Cheng Signed-off-by: Jiri Kosina --- drivers/hid/wacom_wac.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c index 046351c..69827c9 100644 --- a/drivers/hid/wacom_wac.c +++ b/drivers/hid/wacom_wac.c @@ -554,6 +554,9 @@ static int wacom_intuos_inout(struct wacom_wac *wacom) if (features->quirks & WACOM_QUIRK_MULTI_INPUT) wacom->shared->stylus_in_proximity = true; + if (wacom->shared->touch_down) + return 1; + /* in Range while exiting */ if (((data[1] & 0xfe) == 0x20) && wacom->reporting_data) { input_report_key(input, BTN_TOUCH, 0); @@ -1759,6 +1762,9 @@ static int wacom_bpt_pen(struct wacom_wac *wacom) return 0; } + if (wacom->shared->touch_down) + return 0; + prox = (data[1] & 0x20) == 0x20; /* -- 2.7.4