[PATCH 4.18 302/350] media: adv7842: when the EDID is cleared, unconfigure CEC as well

[Greg Kroah-Hartman]

4.18-stable review patch.  If anyone has any objections, please let me know.

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

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

commit ab83203e181015b099720aff43ffabc1812e0fb3 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.verk...@cisco.com>
Cc: <sta...@vger.kernel.org>      # for v4.18 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab+sams...@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

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

--- a/drivers/media/i2c/adv7842.c
+++ b/drivers/media/i2c/adv7842.c
@@ -786,8 +786,10 @@ static int edid_write_hdmi_segment(struc
        /* 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 = cec_get_edid_phys_addr(edid, 256, &spa_loc);
        err = cec_phys_addr_validate(pa, &pa, NULL);