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From:   Maxime Ripard <maxime@cerno.tech>
To:     Jernej Skrabec <jernej.skrabec@gmail.com>,
        Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
        Chen-Yu Tsai <wens@csie.org>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        Jerome Brunet <jbrunet@baylibre.com>,
        Samuel Holland <samuel@sholland.org>,
        Thomas Zimmermann <tzimmermann@suse.de>,
        Daniel Vetter <daniel@ffwll.ch>, Emma Anholt <emma@anholt.net>,
        David Airlie <airlied@linux.ie>,
        Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
        =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>,
        Kevin Hilman <khilman@baylibre.com>,
        Neil Armstrong <narmstrong@baylibre.com>,
        Maxime Ripard <mripard@kernel.org>
Cc:     Maxime Ripard <maxime@cerno.tech>, linux-sunxi@lists.linux.dev,
        linux-kernel@vger.kernel.org, Phil Elwell <phil@raspberrypi.com>,
        Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>,
        linux-arm-kernel@lists.infradead.org,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Dave Stevenson <dave.stevenson@raspberrypi.com>,
        linux-amlogic@lists.infradead.org, dri-devel@lists.freedesktop.org,
        Dom Cobley <dom@raspberrypi.com>
Subject: [PATCH v1 06/35] drm/connector: Only register TV mode property if present
Date:   Fri, 29 Jul 2022 18:34:49 +0200
Message-Id: <20220728-rpi-analog-tv-properties-v1-6-3d53ae722097@cerno.tech>
In-Reply-To: <20220728-rpi-analog-tv-properties-v1-0-3d53ae722097@cerno.tech>
References: <20220728-rpi-analog-tv-properties-v1-0-3d53ae722097@cerno.tech>
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Precedence: bulk

The drm_create_tv_properties() will create the TV mode property
unconditionally.

However, since we'll gradually phase it out, let's register it only if we
have a list passed as an argument. This will make the transition easier.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>

diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index 68a4e47f85a9..d73a68764b6e 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -1684,7 +1684,6 @@ int drm_mode_create_tv_properties(struct drm_device *dev,
 	struct drm_property *tv_selector;
 	struct drm_property *tv_subconnector;
 	struct drm_property *tv_norm;
-	unsigned int i;
 
 	if (dev->mode_config.tv_select_subconnector_property)
 		return 0;
@@ -1723,15 +1722,19 @@ int drm_mode_create_tv_properties(struct drm_device *dev,
 		goto nomem;
 	dev->mode_config.tv_norm_property = tv_norm;
 
-	dev->mode_config.tv_mode_property =
-		drm_property_create(dev, DRM_MODE_PROP_ENUM,
-				    "mode", num_modes);
-	if (!dev->mode_config.tv_mode_property)
-		goto nomem;
+	if (num_modes) {
+		unsigned int i;
 
-	for (i = 0; i < num_modes; i++)
-		drm_property_add_enum(dev->mode_config.tv_mode_property,
-				      i, modes[i]);
+		dev->mode_config.tv_mode_property =
+			drm_property_create(dev, DRM_MODE_PROP_ENUM,
+					    "mode", num_modes);
+		if (!dev->mode_config.tv_mode_property)
+			goto nomem;
+
+		for (i = 0; i < num_modes; i++)
+			drm_property_add_enum(dev->mode_config.tv_mode_property,
+					      i, modes[i]);
+	}
 
 	dev->mode_config.tv_brightness_property =
 		drm_property_create_range(dev, 0, "brightness", 0, 100);

-- 
b4 0.10.0-dev-49460