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, 33 insertions, 0 deletions

diff --git a/Documentation/hwmon/tmp103.rst b/Documentation/hwmon/tmp103.rst
new file mode 100644
index 000000000..b3ef81475
--- /dev/null
+++ b/Documentation/hwmon/tmp103.rst
@@ -0,0 +1,33 @@
+Kernel driver tmp103
+====================
+
+Supported chips:
+
+  * Texas Instruments TMP103
+
+    Prefix: 'tmp103'
+
+    Addresses scanned: none
+
+    Product info and datasheet: https://www.ti.com/product/tmp103
+
+Author:
+
+	Heiko Schocher <hs@denx.de>
+
+Description
+-----------
+
+The TMP103 is a digital output temperature sensor in a four-ball
+wafer chip-scale package (WCSP). The TMP103 is capable of reading
+temperatures to a resolution of 1°C. The TMP103 is specified for
+operation over a temperature range of -40°C to +125°C.
+
+Resolution: 8 Bits
+Accuracy: ±1°C Typ (-10°C to +100°C)
+
+The driver provides the common sysfs-interface for temperatures (see
+Documentation/hwmon/sysfs-interface.rst under Temperatures).
+
+Please refer how to instantiate this driver:
+Documentation/i2c/instantiating-devices.rst