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Subject[PATCH 4.4 106/158] drm/panel: simple: Fix panel_simple_dsi_probe
Date
[ 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@ti.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190226081153.31334-1-peter.ujfalusi@ti.com
Signed-off-by: Sasha Levin <sashal@kernel.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 f418c002d323..ecad4d7c6cd1 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -1389,7 +1389,14 @@ 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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