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From: Douglas Anderson <dianders@chromium.org>
To: Neil Armstrong <neil.armstrong@linaro.org>,
	Jessica Zhang <quic_jesszhan@quicinc.com>,
	Sam Ravnborg <sam@ravnborg.org>
Cc: Linus Walleij <linus.walleij@linaro.org>,
	Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
	Douglas Anderson <dianders@chromium.org>,
	Daniel Vetter <daniel@ffwll.ch>,
	David Airlie <airlied@gmail.com>,
	Jitao Shi <jitao.shi@mediatek.com>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	dri-devel@lists.freedesktop.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH 2/8] drm/panel: boe-tv101wum-nl6: If prepare fails, disable GPIO before regulators
Date: Fri, 17 May 2024 14:36:37 -0700
Message-ID: <20240517143643.2.Ieac346cd0f1606948ba39ceea06b55359fe972b6@changeid>
In-Reply-To: <20240517213712.3135166-1-dianders@chromium.org>
References: <20240517213712.3135166-1-dianders@chromium.org>
Precedence: bulk
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The enable GPIO should clearly be set low before turning off
regulators. That matches both the inverse order that things were
enabled and also the order in unprepare().

Fixes: a869b9db7adf ("drm/panel: support for boe tv101wum-nl6 wuxga dsi video mode panel")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
---

 drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
index 8e839a1749e4..028625d2d37d 100644
--- a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
+++ b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
@@ -1475,13 +1475,13 @@ static int boe_panel_prepare(struct drm_panel *panel)
 	return 0;
 
 poweroff:
+	gpiod_set_value(boe->enable_gpio, 0);
 	regulator_disable(boe->avee);
 poweroffavdd:
 	regulator_disable(boe->avdd);
 poweroff1v8:
 	usleep_range(5000, 7000);
 	regulator_disable(boe->pp1800);
-	gpiod_set_value(boe->enable_gpio, 0);
 
 	return ret;
 }
-- 
2.45.0.rc1.225.g2a3ae87e7f-goog