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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>,
	Cong Yang <yangcong5@huaqin.corp-partner.google.com>,
	Daniel Vetter <daniel@ffwll.ch>,
	David Airlie <airlied@gmail.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 4/8] drm/panel: ilitek-ili9882t: If prepare fails, disable GPIO before regulators
Date: Fri, 17 May 2024 14:36:39 -0700
Message-ID: <20240517143643.4.Ieb0179065847972a0f13e9a8574a80a5f65f3338@changeid>
In-Reply-To: <20240517213712.3135166-1-dianders@chromium.org>
References: <20240517213712.3135166-1-dianders@chromium.org>
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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: e2450d32e5fb ("drm/panel: ili9882t: Break out as separate driver")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
---

 drivers/gpu/drm/panel/panel-ilitek-ili9882t.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c b/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c
index 830d7cfbe857..a2ea25bb6624 100644
--- a/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c
@@ -495,13 +495,13 @@ static int ili9882t_prepare(struct drm_panel *panel)
 	return 0;
 
 poweroff:
+	gpiod_set_value(ili->enable_gpio, 0);
 	regulator_disable(ili->avee);
 poweroffavdd:
 	regulator_disable(ili->avdd);
 poweroff1v8:
 	usleep_range(5000, 7000);
 	regulator_disable(ili->pp1800);
-	gpiod_set_value(ili->enable_gpio, 0);
 
 	return ret;
 }
-- 
2.45.0.rc1.225.g2a3ae87e7f-goog