drm/mediatek: Add missing IS_ERR check for ovl_adaptor platform devicegrafted

platform_device_register_data() can fail and return an ERR_PTR, but the
return value is used without checking, leading to an invalid pointer
being stored in ddp_comp[].dev and passed to component_match_add() and
mtk_ddp_comp_init(), which could result in a kernel crash.

Add an IS_ERR() check to jump to the error handling path on failure.

Fixes: 0d9eee9118b7 ("drm/mediatek: Add drm ovl_adaptor sub driver for MT8195")
Cc: stable@vger.kernel.org
Signed-off-by: Haojie Li <lihaojie@kylinos.cn>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20260825100845.438893-1-lihaojie@kylinos.cn/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile
new file mode 100644
index 000000000..718cb2460
--- /dev/null
+++ b/drivers/usb/chipidea/Makefile
@@ -0,0 +1,19 @@
+# SPDX-License-Identifier: GPL-2.0
+
+# define_trace.h needs to know how to find our header
+CFLAGS_trace.o			:= -I$(src)
+obj-$(CONFIG_USB_CHIPIDEA)		+= ci_hdrc.o
+
+ci_hdrc-y				:= core.o otg.o debug.o ulpi.o
+ci_hdrc-$(CONFIG_USB_CHIPIDEA_UDC)	+= udc.o trace.o
+ci_hdrc-$(CONFIG_USB_CHIPIDEA_HOST)	+= host.o
+ci_hdrc-$(CONFIG_USB_OTG_FSM)		+= otg_fsm.o
+
+# Glue/Bridge layers go here
+
+obj-$(CONFIG_USB_CHIPIDEA_GENERIC)	+= ci_hdrc_usb2.o
+obj-$(CONFIG_USB_CHIPIDEA_MSM)		+= ci_hdrc_msm.o
+obj-$(CONFIG_USB_CHIPIDEA_NPCM)		+= ci_hdrc_npcm.o
+obj-$(CONFIG_USB_CHIPIDEA_PCI)		+= ci_hdrc_pci.o
+obj-$(CONFIG_USB_CHIPIDEA_IMX)		+= usbmisc_imx.o ci_hdrc_imx.o
+obj-$(CONFIG_USB_CHIPIDEA_TEGRA)	+= ci_hdrc_tegra.o