From patchwork Tue Feb 13 10:13:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 772699 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B5F46250E5; Tue, 13 Feb 2024 10:14:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707819242; cv=none; b=eFvU8NLm8TdDIIC8omy2Hu/J76v2P78C2vrTJyPir8V2oikCfuwz9CMoMYXLMiTQaYmtLhxxbklPUy/AgI15o70HkfSlK4J6V9lXRv5DgR6ZNYfeYfp8pboA5nOg4KgmMHpTpmd2i9pDBRsFfiBgnGcLq3w24AsbVzi9lQbyI90= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707819242; c=relaxed/simple; bh=pJXnaVkOmADfzOfCpLbYu/Clp0Z96iKVydBpYB8ckH0=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=AKZXkhguWaZxyoU5c9LG1H9WBdkMyDZMwy7y/mMJd+QYiS7gXomq5qkQiXmZ19Wg9PNnTgozngRRXWjvQ0uVVnI42V9AHKLAd+Y4x80n2GDzq75ELrc4KKgU5R2d/g85POtEODY53aJZTgM1TjaGMEkKFYUIBcVJ++JIirTAh54= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=B5u6HgeY; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="B5u6HgeY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 40900C433F1; Tue, 13 Feb 2024 10:13:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1707819242; bh=pJXnaVkOmADfzOfCpLbYu/Clp0Z96iKVydBpYB8ckH0=; h=From:To:Cc:Subject:Date:From; b=B5u6HgeYAzEr5R34fLeTyjNoBpg1ig8esgtWrTsxTVmSPFRIpTNB2wf+bEsSR3UHF 6m1W693PjIIQsdL787qcI/AH5nNFASF4HBJ2qKmylayQMLVS2Sb1FdQjrMxtP5C18K wdIJAgrFuUE/mS10P8htbTT2/iYhNA9U4lZuhrdc4lMy31bhwnor8JLqpLjV4BoKYx xGI3oCP7Ciifaa7KEeAQtZzzPvJsgLD+7m0AGzVngnl+3eHIYBLCO95wDE4yyakv2C mXwcnW0xBIOpDhLTi51fw1ET7SsTdyXJWHHlEe36yJ8QgMUIl1nZzvBd+wSm7h4sPI jClKDXE31FRWg== From: Arnd Bergmann To: Herbert Xu , "David S. Miller" , Russell King , Ard Biesheuvel Cc: Arnd Bergmann , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt , Jussi Kivilinna , linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev Subject: [PATCH] ARM: crypto: fix function cast warnings Date: Tue, 13 Feb 2024 11:13:44 +0100 Message-Id: <20240213101356.460376-1-arnd@kernel.org> X-Mailer: git-send-email 2.39.2 Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Arnd Bergmann clang-16 warns about casting between incompatible function types: arch/arm/crypto/sha256_glue.c:37:5: error: cast from 'void (*)(u32 *, const void *, unsigned int)' (aka 'void (*)(unsigned int *, const void *, unsigned int)') to 'sha256_block_fn *' (aka 'void (*)(struct sha256_state *, const unsigned char *, int)') converts to incompatible function type [-Werror,-Wcast-function-type-strict] 37 | (sha256_block_fn *)sha256_block_data_order); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm/crypto/sha512-glue.c:34:3: error: cast from 'void (*)(u64 *, const u8 *, int)' (aka 'void (*)(unsigned long long *, const unsigned char *, int)') to 'sha512_block_fn *' (aka 'void (*)(struct sha512_state *, const unsigned char *, int)') converts to incompatible function type [-Werror,-Wcast-function-type-strict] 34 | (sha512_block_fn *)sha512_block_data_order); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Rework the sha256/sha512 code to instead go through a trivial helper function to preserve the calling conventions. Fixes: c80ae7ca3726 ("crypto: arm/sha512 - accelerated SHA-512 using ARM generic ASM and NEON") Fixes: b59e2ae3690c ("crypto: arm/sha256 - move SHA-224/256 ASM/NEON implementation to base layer") Signed-off-by: Arnd Bergmann --- arch/arm/crypto/sha256_glue.c | 18 ++++++++++-------- arch/arm/crypto/sha512-glue.c | 11 ++++++++--- 2 files changed, 18 insertions(+), 11 deletions(-) diff --git a/arch/arm/crypto/sha256_glue.c b/arch/arm/crypto/sha256_glue.c index 433ee4ddce6c..d80448d96ab3 100644 --- a/arch/arm/crypto/sha256_glue.c +++ b/arch/arm/crypto/sha256_glue.c @@ -27,29 +27,31 @@ asmlinkage void sha256_block_data_order(u32 *digest, const void *data, unsigned int num_blks); -int crypto_sha256_arm_update(struct shash_desc *desc, const u8 *data, - unsigned int len) +static void sha256_block_data_order_wrapper(struct sha256_state *sst, u8 const *src, int blocks) { /* make sure casting to sha256_block_fn() is safe */ BUILD_BUG_ON(offsetof(struct sha256_state, state) != 0); - return sha256_base_do_update(desc, data, len, - (sha256_block_fn *)sha256_block_data_order); + return sha256_block_data_order((u32 *)sst, src, blocks); +} + +int crypto_sha256_arm_update(struct shash_desc *desc, const u8 *data, + unsigned int len) +{ + return sha256_base_do_update(desc, data, len, sha256_block_data_order_wrapper); } EXPORT_SYMBOL(crypto_sha256_arm_update); static int crypto_sha256_arm_final(struct shash_desc *desc, u8 *out) { - sha256_base_do_finalize(desc, - (sha256_block_fn *)sha256_block_data_order); + sha256_base_do_finalize(desc, sha256_block_data_order_wrapper); return sha256_base_finish(desc, out); } int crypto_sha256_arm_finup(struct shash_desc *desc, const u8 *data, unsigned int len, u8 *out) { - sha256_base_do_update(desc, data, len, - (sha256_block_fn *)sha256_block_data_order); + sha256_base_do_update(desc, data, len, sha256_block_data_order_wrapper); return crypto_sha256_arm_final(desc, out); } EXPORT_SYMBOL(crypto_sha256_arm_finup); diff --git a/arch/arm/crypto/sha512-glue.c b/arch/arm/crypto/sha512-glue.c index 0635a65aa488..1b2c9c0c8a5f 100644 --- a/arch/arm/crypto/sha512-glue.c +++ b/arch/arm/crypto/sha512-glue.c @@ -27,17 +27,22 @@ MODULE_ALIAS_CRYPTO("sha512-arm"); asmlinkage void sha512_block_data_order(u64 *state, u8 const *src, int blocks); +static void sha512_block_data_order_wrapper(struct sha512_state *sst, u8 const *src, int blocks) +{ + return sha512_block_data_order((u64 *)sst, src, blocks); +} + int sha512_arm_update(struct shash_desc *desc, const u8 *data, unsigned int len) { return sha512_base_do_update(desc, data, len, - (sha512_block_fn *)sha512_block_data_order); + sha512_block_data_order_wrapper); } static int sha512_arm_final(struct shash_desc *desc, u8 *out) { sha512_base_do_finalize(desc, - (sha512_block_fn *)sha512_block_data_order); + sha512_block_data_order_wrapper); return sha512_base_finish(desc, out); } @@ -45,7 +50,7 @@ int sha512_arm_finup(struct shash_desc *desc, const u8 *data, unsigned int len, u8 *out) { sha512_base_do_update(desc, data, len, - (sha512_block_fn *)sha512_block_data_order); + sha512_block_data_order_wrapper); return sha512_arm_final(desc, out); }