From: Jason Gerecke <killertofu@gmail.com>
Date: Thu, 21 May 2015 17:44:32 +0000 (-0700)
Subject: HID: wacom: Handle failing HID_DG_CONTACTMAX requests
X-Git-Tag: omap-for-v4.3/legacy-v2-signed~186^2^9~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=05e8fd9202247ac6cdc26f6bafb5453120065490;p=pandora-kernel.git

HID: wacom: Handle failing HID_DG_CONTACTMAX requests

Hardware may not respond to a request for the HID_DG_CONTACTMAX feature and
we should be tolerant of such a failure. This is especially true when using
hid-replay where the hardware doesn't exist, but also for devices attached
to a flaky bus. This patch increases the number of allowable retries to
match other calls to 'wacom_get_report' and also provides a fallback which
forces 'touch_max = 16' (enough for any Wacom device seen so far).

Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
---

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