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 --- io_uring/loop.h | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 io_uring/loop.h (limited to 'io_uring/loop.h') diff --git a/io_uring/loop.h b/io_uring/loop.h new file mode 100644 index 000000000..4dd4fb3ae --- /dev/null +++ b/io_uring/loop.h @@ -0,0 +1,37 @@ +// SPDX-License-Identifier: GPL-2.0 +#ifndef IOU_LOOP_H +#define IOU_LOOP_H + +#include + +struct iou_loop_params { + /* + * The CQE index to wait for. Only serves as a hint and can still be + * woken up earlier. + */ + __u32 cq_wait_idx; +}; + +enum { + IOU_LOOP_CONTINUE = 0, + IOU_LOOP_STOP, +}; + +static inline bool io_has_loop_ops(struct io_ring_ctx *ctx) +{ + return data_race(ctx->loop_step); +} + +int io_run_loop(struct io_ring_ctx *ctx); + +static inline struct iou_ctx *io_loop_mangle_ctx(struct io_ring_ctx *ctx) +{ + return (struct iou_ctx *)ctx; +} + +static inline struct io_ring_ctx *io_loop_demangle_ctx(struct iou_ctx *ctx) +{ + return (struct io_ring_ctx *)ctx; +} + +#endif -- cgit v1.3.1