[PATCH 4.17 177/336] HID: hid-plantronics: Re-resend Update to map button for PTT products

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

4.17-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Terry Junge <terry.junge@plantronics.com>

[ Upstream commit 37e376df5f4993677c33968a0c19b0c5acbf1108 ]

Add a mapping for Push-To-Talk joystick trigger button.

Tested on ChromeBox/ChromeBook with various Plantronics devices.

Signed-off-by: Terry Junge <terry.junge@plantronics.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/hid/hid-plantronics.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

--- a/drivers/hid/hid-plantronics.c
+++ b/drivers/hid/hid-plantronics.c
@@ -2,7 +2,7 @@
  *  Plantronics USB HID Driver
  *
  *  Copyright (c) 2014 JD Cole <jd.cole@plantronics.com>
- *  Copyright (c) 2015 Terry Junge <terry.junge@plantronics.com>
+ *  Copyright (c) 2015-2018 Terry Junge <terry.junge@plantronics.com>
  */
 
 /*
@@ -48,6 +48,10 @@ static int plantronics_input_mapping(str
 	unsigned short mapped_key;
 	unsigned long plt_type = (unsigned long)hid_get_drvdata(hdev);
 
+	/* special case for PTT products */
+	if (field->application == HID_GD_JOYSTICK)
+		goto defaulted;
+
 	/* handle volume up/down mapping */
 	/* non-standard types or multi-HID interfaces - plt_type is PID */
 	if (!(plt_type & HID_USAGE_PAGE)) {