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, 36 insertions, 0 deletions

diff --git a/drivers/usb/musb/Makefile b/drivers/usb/musb/Makefile
new file mode 100644
index 000000000..5dccf0e45
--- /dev/null
+++ b/drivers/usb/musb/Makefile
@@ -0,0 +1,36 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# for USB OTG silicon based on Mentor Graphics INVENTRA designs
+#
+
+# define_trace.h needs to know how to find our header
+CFLAGS_musb_trace.o	:= -I$(src)
+
+obj-$(CONFIG_USB_MUSB_HDRC) += musb_hdrc.o
+
+musb_hdrc-y := musb_core.o musb_trace.o
+
+musb_hdrc-$(CONFIG_USB_MUSB_HOST)$(CONFIG_USB_MUSB_DUAL_ROLE) += musb_virthub.o musb_host.o
+musb_hdrc-$(CONFIG_USB_MUSB_GADGET)$(CONFIG_USB_MUSB_DUAL_ROLE) += musb_gadget_ep0.o musb_gadget.o
+musb_hdrc-$(CONFIG_DEBUG_FS)			+= musb_debugfs.o
+
+# Hardware Glue Layer
+obj-$(CONFIG_USB_MUSB_OMAP2PLUS)		+= omap2430.o
+obj-$(CONFIG_USB_MUSB_DSPS)			+= musb_dsps.o
+obj-$(CONFIG_USB_MUSB_TUSB6010)			+= tusb6010.o
+obj-$(CONFIG_USB_MUSB_DA8XX)			+= da8xx.o
+obj-$(CONFIG_USB_MUSB_UX500)			+= ux500.o
+obj-$(CONFIG_USB_MUSB_JZ4740)			+= jz4740.o
+obj-$(CONFIG_USB_MUSB_SUNXI)			+= sunxi.o
+obj-$(CONFIG_USB_MUSB_MEDIATEK)      		+= mediatek.o
+obj-$(CONFIG_USB_MUSB_POLARFIRE_SOC)		+= mpfs.o
+
+# the kconfig must guarantee that only one of the
+# possible I/O schemes will be enabled at a time ...
+# PIO only, or DMA (several potential schemes).
+# though PIO is always there to back up DMA, and for ep0
+
+musb_hdrc-$(CONFIG_USB_INVENTRA_DMA)		+= musbhsdma.o
+musb_hdrc-$(CONFIG_USB_TUSB_OMAP_DMA)		+= tusb6010_omap.o
+musb_hdrc-$(CONFIG_USB_UX500_DMA)		+= ux500_dma.o
+musb_hdrc-$(CONFIG_USB_TI_CPPI41_DMA)		+= musb_cppi41.o