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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Hans Verkuil <hans.verkuil@cisco.com>,
        Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Subject: [PATCH 4.19 310/361] media: adv7604: when the EDID is cleared, unconfigure CEC as well
Date:   Sun, 11 Nov 2018 14:20:57 -0800
Message-Id: <20181111221658.191787222@linuxfoundation.org>
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4.19-stable review patch.  If anyone has any objections, please let me know.

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

From: Hans Verkuil <hans.verkuil@cisco.com>

commit e7da89926f6dc6cf855f5ffdf79ef99a1b115ca7 upstream.

When there is no EDID the CEC adapter should be unconfigured as
well. So call cec_phys_addr_invalidate() when this happens.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: <stable@vger.kernel.org>      # for v4.18 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/media/i2c/adv7604.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/media/i2c/adv7604.c
+++ b/drivers/media/i2c/adv7604.c
@@ -2284,8 +2284,10 @@ static int adv76xx_set_edid(struct v4l2_
 		state->aspect_ratio.numerator = 16;
 		state->aspect_ratio.denominator = 9;
 
-		if (!state->edid.present)
+		if (!state->edid.present) {
 			state->edid.blocks = 0;
+			cec_phys_addr_invalidate(state->cec_adap);
+		}
 
 		v4l2_dbg(2, debug, sd, "%s: clear EDID pad %d, edid.present = 0x%x\n",
 				__func__, edid->pad, state->edid.present);