drm/radeon: reset i2c valid to avoid incorrect tv-out polling.

We really don't want to be polling tv-out but since we weren't forcing the
i2c lines to invalid (tv-out has no DDC), we were adding tv connectors to the
polling setup and this was causing blinking on secondary displays.

This fixes the regression Torsten reported.

Reported-by: Torsten Kaiser <just.for.lkml@googlemail.com>
Tested-by: Torsten Kaiser <just.for.lkml@googlemail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
index f6f907e7217a..1bee2f9e24a5 100644
--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -2026,6 +2026,7 @@ bool radeon_get_legacy_connector_info_from_bios(struct drm_device *dev)
                                         combios_setup_i2c_bus(rdev, RADEON_GPIO_CRT2_DDC);
                                 break;
                         default:
+                                ddc_i2c.valid = false;
                                 break;
                         }
 
@@ -2339,6 +2340,7 @@ bool radeon_get_legacy_connector_info_from_bios(struct drm_device *dev)
                         if (RBIOS8(tv_info + 6) == 'T') {
                                 if (radeon_apply_legacy_tv_quirks(dev)) {
                                         hpd.hpd = RADEON_HPD_NONE;
+                                        ddc_i2c.valid = false;
                                         radeon_add_legacy_encoder(dev,
                                                                   radeon_get_encoder_id
                                                                   (dev,