From bce7698e2e6565bb765bd0522337f29f5f312624 Mon Sep 17 00:00:00 2001 From: Haojie Li Date: Tue, 25 Aug 2026 18:08:45 +0800 Subject: drm/mediatek: Add missing IS_ERR check for ovl_adaptor platform device 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 Reviewed-by: CK Hu Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20260825100845.438893-1-lihaojie@kylinos.cn/ Signed-off-by: Chun-Kuang Hu --- include/net/wext.h | 61 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 include/net/wext.h (limited to 'include/net/wext.h') diff --git a/include/net/wext.h b/include/net/wext.h new file mode 100644 index 000000000..aa192a670 --- /dev/null +++ b/include/net/wext.h @@ -0,0 +1,61 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __NET_WEXT_H +#define __NET_WEXT_H + +#include + +struct net; + +#ifdef CONFIG_WEXT_CORE +int wext_handle_ioctl(struct net *net, unsigned int cmd, + void __user *arg); +int compat_wext_handle_ioctl(struct net *net, unsigned int cmd, + unsigned long arg); + +struct iw_statistics *get_wireless_stats(struct net_device *dev); +int call_commit_handler(struct net_device *dev); +#else +static inline int wext_handle_ioctl(struct net *net, unsigned int cmd, + void __user *arg) +{ + return -EINVAL; +} +static inline int compat_wext_handle_ioctl(struct net *net, unsigned int cmd, + unsigned long arg) +{ + return -EINVAL; +} +#endif + +#ifdef CONFIG_WEXT_PROC +int wext_proc_init(struct net *net); +void wext_proc_exit(struct net *net); +#else +static inline int wext_proc_init(struct net *net) +{ + return 0; +} +static inline void wext_proc_exit(struct net *net) +{ + return; +} +#endif + +#ifdef CONFIG_WEXT_PRIV +int ioctl_private_call(struct net_device *dev, struct iwreq *iwr, + unsigned int cmd, struct iw_request_info *info, + iw_handler handler); +int compat_private_call(struct net_device *dev, struct iwreq *iwr, + unsigned int cmd, struct iw_request_info *info, + iw_handler handler); +int iw_handler_get_private(struct net_device * dev, + struct iw_request_info * info, + union iwreq_data * wrqu, + char * extra); +#else +#define ioctl_private_call NULL +#define compat_private_call NULL +#endif + + +#endif /* __NET_WEXT_H */ -- cgit v1.3.1