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 --- lib/crypto/arm64/sha1.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 lib/crypto/arm64/sha1.h (limited to 'lib/crypto/arm64/sha1.h') diff --git a/lib/crypto/arm64/sha1.h b/lib/crypto/arm64/sha1.h new file mode 100644 index 000000000..112c5d443 --- /dev/null +++ b/lib/crypto/arm64/sha1.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * SHA-1 optimized for ARM64 + * + * Copyright 2025 Google LLC + */ +#include +#include + +static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_ce); + +asmlinkage void sha1_ce_transform(struct sha1_block_state *state, + const u8 *data, size_t nblocks); + +static void sha1_blocks(struct sha1_block_state *state, + const u8 *data, size_t nblocks) +{ + if (static_branch_likely(&have_ce) && likely(may_use_simd())) { + scoped_ksimd() + sha1_ce_transform(state, data, nblocks); + } else { + sha1_blocks_generic(state, data, nblocks); + } +} + +#define sha1_mod_init_arch sha1_mod_init_arch +static void sha1_mod_init_arch(void) +{ + if (cpu_have_named_feature(SHA1)) + static_branch_enable(&have_ce); +} -- cgit v1.3.1