drm/vc4: hdmi: do not return negative values from .get_modes()

[ Upstream commit abf493988e380f25242c1023275c68bd3579c9ce ]

The .get_modes() hooks aren't supposed to return negative error
codes. Return 0 for no modes, whatever the reason.

Cc: Maxime Ripard <mripard@kernel.org>
Cc: stable@vger.kernel.org
Acked-by: Maxime Ripard <mripard@kernel.org>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/dcda6d4003e2c6192987916b35c7304732800e08.1709913674.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 25c9c71256d355944ed02f3dad976bb1b2b9c9bd..4626fe9aac5636e669b2ad2f47af7ea891d227db 100644 (file)
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -508,7 +508,7 @@ static int vc4_hdmi_connector_get_modes(struct drm_connector *connector)
        edid = drm_get_edid(connector, vc4_hdmi->ddc);
        cec_s_phys_addr_from_edid(vc4_hdmi->cec_adap, edid);
        if (!edid)
-               return -ENODEV;
+               return 0;
 
        drm_connector_update_edid_property(connector, edid);
        ret = drm_add_edid_modes(connector, edid);