[PATCH] drm/panel: lg-sw43408: Fix an error handling path in sw43408_probe()

From: Christophe JAILLET
Date: Mon May 20 2024 - 05:34:59 EST


If mipi_dsi_attach() fails, we must undo the drm_panel_add() call hidden in
sw43408_add(), as already done in the remove function.

Fixes: 069a6c0e94f9 ("drm: panel: Add LG sw43408 panel driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
Compile tested only
---
drivers/gpu/drm/panel/panel-lg-sw43408.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panel/panel-lg-sw43408.c b/drivers/gpu/drm/panel/panel-lg-sw43408.c
index 115f4702d59f..27f2ad788d38 100644
--- a/drivers/gpu/drm/panel/panel-lg-sw43408.c
+++ b/drivers/gpu/drm/panel/panel-lg-sw43408.c
@@ -286,7 +286,15 @@ static int sw43408_probe(struct mipi_dsi_device *dsi)

dsi->dsc = &ctx->dsc;

- return mipi_dsi_attach(dsi);
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0)
+ goto err_remove_panel;
+
+ return 0;
+
+err_remove_panel:
+ drm_panel_remove(&ctx->base);
+ return ret;
}

static void sw43408_remove(struct mipi_dsi_device *dsi)
--
2.45.1