[PATCH AUTOSEL 4.19 001/101] drm/panel: simple: Fix panel_simple_dsi_probe

From: Sasha Levin
Date: Fri Jul 19 2019 - 00:07:39 EST


From: Peter Ujfalusi <peter.ujfalusi@xxxxxx>

[ 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@xxxxxx>
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20190226081153.31334-1-peter.ujfalusi@xxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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