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Message-Id: <20190729190656.234251785@linuxfoundation.org>
Date: Mon, 29 Jul 2019 21:21:29 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Peter Ujfalusi <peter.ujfalusi@...com>,
Thierry Reding <treding@...dia.com>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 002/113] drm/panel: simple: Fix panel_simple_dsi_probe
[ Upstream commit 7ad9db66fafb0f0ad53fd2a66217105da5ddeffe ]
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>
Signed-off-by: Thierry Reding <treding@...dia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190226081153.31334-1-peter.ujfalusi@ti.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
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 97964f7f2ace..b1d41c4921dd 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -2803,7 +2803,14 @@ 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)
--
2.20.1
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