linux-kernel - [PATCH 4/7] Input: libps2

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Message-ID: <20230511185252.386941-5-dmitry.torokhov@gmail.com>
Date:   Thu, 11 May 2023 11:52:44 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     linux-input@...r.kernel.org
Cc:     Raul E Rangel <rrangel@...omium.org>, linux-kernel@...r.kernel.org
Subject: [PATCH 4/7] Input: libps2 - fix NAK handling

Do not try to process "resend" or "reject" responses from the device
as normal response data for a command.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
 drivers/input/serio/libps2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/serio/libps2.c b/drivers/input/serio/libps2.c
index d09450eca9a7..14b70a78875d 100644
--- a/drivers/input/serio/libps2.c
+++ b/drivers/input/serio/libps2.c
@@ -445,7 +445,7 @@ bool ps2_handle_ack(struct ps2dev *ps2dev, u8 data)
 	ps2dev->flags &= ~PS2_FLAG_ACK;
 	wake_up(&ps2dev->wait);
 
-	if (data != PS2_RET_ACK)
+	if (!ps2dev->nak && data != PS2_RET_ACK)
 		ps2_handle_response(ps2dev, data);
 
 	return true;
-- 
2.40.1.606.ga4b1b128d6-goog