linux-kernel - [PATCH AUTOSEL 4.9 2/3] Input: cros_ec_keyb - send 'scancodes' in addition to key events

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Message-Id: <20201220033526.2728841-2-sashal@kernel.org>
Date:   Sat, 19 Dec 2020 22:35:25 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Rajat Jain <rajatja@...gle.com>,
        Sasha Levin <sashal@...nel.org>, linux-input@...r.kernel.org
Subject: [PATCH AUTOSEL 4.9 2/3] Input: cros_ec_keyb - send 'scancodes' in addition to key events

From: Dmitry Torokhov <dmitry.torokhov@...il.com>

[ Upstream commit 80db2a087f425b63f0163bc95217abd01c637cb5 ]

To let userspace know what 'scancodes' should be used in EVIOCGKEYCODE
and EVIOCSKEYCODE ioctls, we should send EV_MSC/MSC_SCAN events in
addition to EV_KEY/KEY_* events. The driver already declared MSC_SCAN
capability, so it is only matter of actually sending the events.

Link: https://lore.kernel.org/r/X87aOaSptPTvZ3nZ@google.com
Acked-by: Rajat Jain <rajatja@...gle.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/input/keyboard/cros_ec_keyb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/input/keyboard/cros_ec_keyb.c b/drivers/input/keyboard/cros_ec_keyb.c
index 25943e9bc8bff..328792e26a9f6 100644
--- a/drivers/input/keyboard/cros_ec_keyb.c
+++ b/drivers/input/keyboard/cros_ec_keyb.c
@@ -140,6 +140,7 @@ static void cros_ec_keyb_process(struct cros_ec_keyb *ckdev,
 					"changed: [r%d c%d]: byte %02x\n",
 					row, col, new_state);
 
+				input_event(idev, EV_MSC, MSC_SCAN, pos);
 				input_report_key(idev, keycodes[pos],
 						 new_state);
 			}
-- 
2.27.0