linux-kernel - [ 121/150] HID: wiimote: fix nunchuck button parser

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Message-Id: <20130226235536.671743228@linuxfoundation.org>
Date:	Tue, 26 Feb 2013 15:56:18 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Victor Quicksilver <victor.quicksilver@...il.com>,
	David Herrmann <dh.herrmann@...il.com>,
	Jiri Kosina <jkosina@...e.cz>
Subject: [ 121/150] HID: wiimote: fix nunchuck button parser

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

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

From: David Herrmann <dh.herrmann@...il.com>

commit 89bdd0c6f38ccf0de43d5a36ede384a730f3394e upstream.

The buttons of the Wii Remote Nunchuck extension are actually active low.
Fix the parser to forward the inverted values. The comment in the function
always said "0 == pressed" but the implementation was wrong from the
beginning.

Reported-by: Victor Quicksilver <victor.quicksilver@...il.com>
Signed-off-by: David Herrmann <dh.herrmann@...il.com>
Signed-off-by: Jiri Kosina <jkosina@...e.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/hid/hid-wiimote-ext.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/drivers/hid/hid-wiimote-ext.c
+++ b/drivers/hid/hid-wiimote-ext.c
@@ -403,14 +403,14 @@ static void handler_nunchuck(struct wiim
 
 	if (ext->motionp) {
 		input_report_key(ext->input,
-			wiiext_keymap[WIIEXT_KEY_Z], !!(payload[5] & 0x04));
+			wiiext_keymap[WIIEXT_KEY_Z], !(payload[5] & 0x04));
 		input_report_key(ext->input,
-			wiiext_keymap[WIIEXT_KEY_C], !!(payload[5] & 0x08));
+			wiiext_keymap[WIIEXT_KEY_C], !(payload[5] & 0x08));
 	} else {
 		input_report_key(ext->input,
-			wiiext_keymap[WIIEXT_KEY_Z], !!(payload[5] & 0x01));
+			wiiext_keymap[WIIEXT_KEY_Z], !(payload[5] & 0x01));
 		input_report_key(ext->input,
-			wiiext_keymap[WIIEXT_KEY_C], !!(payload[5] & 0x02));
+			wiiext_keymap[WIIEXT_KEY_C], !(payload[5] & 0x02));
 	}
 
 	input_sync(ext->input);


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