linux-kernel - [PATCH] drm/panel: simple: Fix panel_simple_dsi

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Date:   Tue, 26 Feb 2019 10:11:53 +0200
From:   Peter Ujfalusi <peter.ujfalusi@...com>
To:     <thierry.reding@...il.com>, <airlied@...ux.ie>, <daniel@...ll.ch>
CC:     <dri-devel@...ts.freedesktop.org>, <sam@...nborg.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] drm/panel: simple: Fix panel_simple_dsi_probe

In case mipi_dsi_attach() fails remove the registered panel to avoid added
panel without corresponding device.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
---
 drivers/gpu/drm/panel/panel-simple.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 0337583ffa49..90b4e75381e2 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -3072,7 +3072,14 @@ static int panel_simple_dsi_probe(struct mipi_dsi_device *dsi)
 	dsi->format = desc->format;
 	dsi->lanes = desc->lanes;
 
-	return mipi_dsi_attach(dsi);
+	err = mipi_dsi_attach(dsi);
+	if (err) {
+		struct panel_simple *panel = dev_get_drvdata(&dsi->dev);
+
+		drm_panel_remove(&panel->base);
+	}
+
+	return err;
 }
 
 static int panel_simple_dsi_remove(struct mipi_dsi_device *dsi)
-- 
Peter

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