From 5f31dbeae8a88f31c3eb4eb526ab4807c40da241 Mon Sep 17 00:00:00 2001
From: Brian Norris <briannorris@chromium.org>
Date: Thu, 23 Sep 2021 17:33:53 -0700
Subject: [PATCH] drm/panel: kingdisplay-kd097d04: Delete panel on attach() failure
Git-commit: 5f31dbeae8a88f31c3eb4eb526ab4807c40da241
Patch-mainline: v5.17-rc1
References: git-fixes
If we fail to attach (e.g., because 1 of 2 dual-DSI controllers aren't
ready), we leave a dangling drm_panel reference to freed memory. Clean
that up on failure.
Fixes: 2a994cbed6b2 ("drm/panel: Add Kingdisplay KD097D04 panel driver")
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210923173336.1.Icb4d9dbc1817f4e826361a4f1cea7461541668f0@changeid
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/panel/panel-kingdisplay-kd097d04.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/panel/panel-kingdisplay-kd097d04.c b/drivers/gpu/drm/panel/panel-kingdisplay-kd097d04.c
index 86e4213e8bb1..daccb1fd5fda 100644
--- a/drivers/gpu/drm/panel/panel-kingdisplay-kd097d04.c
+++ b/drivers/gpu/drm/panel/panel-kingdisplay-kd097d04.c
@@ -406,7 +406,13 @@ static int kingdisplay_panel_probe(struct mipi_dsi_device *dsi)
if (err < 0)
return err;
- return mipi_dsi_attach(dsi);
+ err = mipi_dsi_attach(dsi);
+ if (err < 0) {
+ kingdisplay_panel_del(kingdisplay);
+ return err;
+ }
+
+ return 0;
}
static int kingdisplay_panel_remove(struct mipi_dsi_device *dsi)
--
2.31.1