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, 24 insertions, 0 deletions

diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile
new file mode 100644
index 000000000..ceae46c53
--- /dev/null
+++ b/drivers/usb/phy/Makefile
@@ -0,0 +1,24 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for physical layer USB drivers
+#
+obj-$(CONFIG_USB_PHY)			+= phy.o
+obj-$(CONFIG_OF)			+= of.o
+
+# transceiver drivers, keep the list sorted
+
+obj-$(CONFIG_AB8500_USB)		+= phy-ab8500-usb.o
+obj-$(CONFIG_FSL_USB2_OTG)		+= phy-fsl-usb.o
+obj-$(CONFIG_NOP_USB_XCEIV)		+= phy-generic.o
+obj-$(CONFIG_TAHVO_USB)			+= phy-tahvo.o
+obj-$(CONFIG_AM335X_CONTROL_USB)	+= phy-am335x-control.o
+obj-$(CONFIG_AM335X_PHY_USB)		+= phy-am335x.o
+obj-$(CONFIG_OMAP_OTG)			+= phy-omap-otg.o
+obj-$(CONFIG_TWL6030_USB)		+= phy-twl6030-usb.o
+obj-$(CONFIG_USB_TEGRA_PHY)		+= phy-tegra-usb.o
+obj-$(CONFIG_USB_GPIO_VBUS)		+= phy-gpio-vbus-usb.o
+obj-$(CONFIG_USB_ISP1301)		+= phy-isp1301.o
+obj-$(CONFIG_USB_MXS_PHY)		+= phy-mxs-usb.o
+obj-$(CONFIG_USB_ULPI)			+= phy-ulpi.o
+obj-$(CONFIG_USB_ULPI_VIEWPORT)		+= phy-ulpi-viewport.o
+obj-$(CONFIG_KEYSTONE_USB_PHY)		+= phy-keystone.o