linux-kernel - [PATCH 4.17 178/220] media: rc: mce

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Date:   Sun,  1 Jul 2018 18:23:22 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Sean Young <sean@...s.org>,
        Mauro Carvalho Chehab <mchehab@...pensource.com>
Subject: [PATCH 4.17 178/220] media: rc: mce_kbd decoder: fix stuck keys

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

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

From: Sean Young <sean@...s.org>

commit 63039c29f7a4ce8a8bd165173840543c0098d7b0 upstream.

The MCE Remote sends a 0 scancode when keys are released. If this is not
received or decoded, then keys can get "stuck"; the keyup event is not
sent since the input_sync() is missing from the timeout handler.

Cc: stable@...r.kernel.org
Signed-off-by: Sean Young <sean@...s.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@...pensource.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/media/rc/ir-mce_kbd-decoder.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/media/rc/ir-mce_kbd-decoder.c
+++ b/drivers/media/rc/ir-mce_kbd-decoder.c
@@ -130,6 +130,8 @@ static void mce_kbd_rx_timeout(struct ti
 
 	for (i = 0; i < MCIR2_MASK_KEYS_START; i++)
 		input_report_key(raw->mce_kbd.idev, kbd_keycodes[i], 0);
+
+	input_sync(raw->mce_kbd.idev);
 }
 
 static enum mce_kbd_mode mce_kbd_mode(struct mce_kbd_dec *data)