[git:media_tree/master] media: adv7842: when the EDID is cleared, unconfigure CEC as well

[git:media_tree/master] media: adv7842: when the EDID is cleared, unconfigure CEC as well

[Mauro Carvalho Chehab]

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Subject: media: adv7842: when the EDID is cleared, unconfigure CEC as well
Author:  Hans Verkuil <hans.verkuil@cisco.com>
Date:    Thu Oct 4 03:58:34 2018 -0400

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>

 drivers/media/i2c/adv7842.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

---

diff --git a/drivers/media/i2c/adv7842.c b/drivers/media/i2c/adv7842.c
index cd63cc6564e9..4721d49dcf0f 100644
--- a/drivers/media/i2c/adv7842.c
+++ b/drivers/media/i2c/adv7842.c
@@ -786,8 +786,10 @@ static int edid_write_hdmi_segment(struct v4l2_subdev *sd, u8 port)
 	/* Disable I2C access to internal EDID ram from HDMI DDC ports */
 	rep_write_and_or(sd, 0x77, 0xf3, 0x00);
 
-	if (!state->hdmi_edid.present)
+	if (!state->hdmi_edid.present) {
+		cec_phys_addr_invalidate(state->cec_adap);
 		return 0;
+	}
 
 	pa = v4l2_get_edid_phys_addr(edid, 256, &spa_loc);
 	err = v4l2_phys_addr_validate(pa, &pa, NULL);