From: Christian Quante <[email protected]> The keyboard path has answered unknown commands with KBD_REPLY_RESEND since commit 06b3611fc2a3 ("ps2: reject unknown commands, instead of blindly accepting them"), but never said why. Give it the comment the mouse path just gained, so the reasoning is written down in both places.
Suggested-by: Akihiko Odaki <[email protected]> Signed-off-by: Christian Quante <[email protected]> Reviewed-by: Marc-André Lureau <[email protected]> Reviewed-by: Akihiko Odaki <[email protected]> Message-ID: <[email protected]> --- hw/input/ps2.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/hw/input/ps2.c b/hw/input/ps2.c index e8300d2d8308..01af4350b3bc 100644 --- a/hw/input/ps2.c +++ b/hw/input/ps2.c @@ -647,6 +647,10 @@ void ps2_write_keyboard(PS2KbdState *s, int val) ps2_cqueue_1(ps2, KBD_REPLY_ACK); break; default: + /* + * A PS/2 device answers every command it is given; an unknown + * one draws a resend. + */ ps2_cqueue_1(ps2, KBD_REPLY_RESEND); break; } -- 2.55.0.543.g5ebe2ebe4ea8
