linux-kernel - [PATCH v2 40/41] drm/sun4i: tv: Add missing reset assertion

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Message-Id: <20220728-rpi-analog-tv-properties-v2-40-459522d653a7@cerno.tech>
Date:   Mon, 29 Aug 2022 15:11:54 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     Maxime Ripard <mripard@...nel.org>,
        Ben Skeggs <bskeggs@...hat.com>,
        David Airlie <airlied@...ux.ie>, Chen-Yu Tsai <wens@...e.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Lyude Paul <lyude@...hat.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>,
        Karol Herbst <kherbst@...hat.com>,
        Noralf Trønnes <noralf@...nnes.org>,
        Emma Anholt <emma@...olt.net>, Daniel Vetter <daniel@...ll.ch>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>
Cc:     Maxime Ripard <maxime@...no.tech>,
        Hans de Goede <hdegoede@...hat.com>,
        linux-arm-kernel@...ts.infradead.org,
        Phil Elwell <phil@...pberrypi.com>,
        intel-gfx@...ts.freedesktop.org,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        dri-devel@...ts.freedesktop.org, Dom Cobley <dom@...pberrypi.com>,
        linux-kernel@...r.kernel.org, nouveau@...ts.freedesktop.org,
        linux-sunxi@...ts.linux.dev,
        Mateusz Kwiatkowski <kfyatek+publicgit@...il.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: [PATCH v2 40/41] drm/sun4i: tv: Add missing reset assertion

The reset line is deasserted at bind, and asserted if we ever encounter an
error there. However, it's never asserted in unbind which will lead to a
resource unbalance.

Signed-off-by: Maxime Ripard <maxime@...no.tech>
Reviewed-by: Jernej Skrabec <jernej.skrabec@...il.com>

diff --git a/drivers/gpu/drm/sun4i/sun4i_tv.c b/drivers/gpu/drm/sun4i/sun4i_tv.c
index ad6a3739bfa9..74ff5ad6a8b9 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tv.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tv.c
@@ -605,6 +605,7 @@ static void sun4i_tv_unbind(struct device *dev, struct device *master,
 	drm_connector_cleanup(&tv->connector);
 	drm_encoder_cleanup(&tv->encoder);
 	clk_disable_unprepare(tv->clk);
+	reset_control_assert(tv->reset);
 }
 
 static const struct component_ops sun4i_tv_ops = {

-- 
b4 0.10.0-dev-65ba7