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HID: wacom: Force pen out of prox if no events have been received in …
…a while commit 94b179052f95c294d83e9c9c34f7833cf3cd4305 upstream. Prox-out events may not be reliably sent by some AES firmware. This can cause problems for users, particularly due to arbitration logic disabling touch input while the pen is in prox. This commit adds a timer which is reset every time a new prox event is received. When the timer expires we check to see if the pen is still in prox and force it out if necessary. This is patterend off of the same solution used by 'hid-letsketch' driver which has a similar problem. Link: linuxwacom/input-wacom#310 Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: Ping Cheng <pinglinux@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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