linux-kernel - [PATCH] crypto: arm/sha256-neon - Fix clang function cast warnings

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Date:   Wed, 19 Apr 2023 17:31:49 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     kernel test robot <lkp@...el.com>
Cc:     Robert Elliott <elliott@....com>, llvm@...ts.linux.dev,
        oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>
Subject: [PATCH] crypto: arm/sha256-neon - Fix clang function cast warnings

Instead of casting the function which upsets clang for some reason,
change the assembly function siganture instead.

Reported-by: kernel test robot <lkp@...el.com>
Link: https://lore.kernel.org/oe-kbuild-all/202304081828.zjGcFUyE-lkp@intel.com/
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>

diff --git a/arch/arm/crypto/sha256_neon_glue.c b/arch/arm/crypto/sha256_neon_glue.c
index 701706262ef3..ccdcfff71910 100644
--- a/arch/arm/crypto/sha256_neon_glue.c
+++ b/arch/arm/crypto/sha256_neon_glue.c
@@ -21,8 +21,8 @@
 
 #include "sha256_glue.h"
 
-asmlinkage void sha256_block_data_order_neon(u32 *digest, const void *data,
-					     unsigned int num_blks);
+asmlinkage void sha256_block_data_order_neon(struct sha256_state *digest,
+					     const u8 *data, int num_blks);
 
 static int crypto_sha256_neon_update(struct shash_desc *desc, const u8 *data,
 				     unsigned int len)
@@ -34,8 +34,7 @@ static int crypto_sha256_neon_update(struct shash_desc *desc, const u8 *data,
 		return crypto_sha256_arm_update(desc, data, len);
 
 	kernel_neon_begin();
-	sha256_base_do_update(desc, data, len,
-			(sha256_block_fn *)sha256_block_data_order_neon);
+	sha256_base_do_update(desc, data, len, sha256_block_data_order_neon);
 	kernel_neon_end();
 
 	return 0;
@@ -50,9 +49,8 @@ static int crypto_sha256_neon_finup(struct shash_desc *desc, const u8 *data,
 	kernel_neon_begin();
 	if (len)
 		sha256_base_do_update(desc, data, len,
-			(sha256_block_fn *)sha256_block_data_order_neon);
-	sha256_base_do_finalize(desc,
-			(sha256_block_fn *)sha256_block_data_order_neon);
+				      sha256_block_data_order_neon);
+	sha256_base_do_finalize(desc, sha256_block_data_order_neon);
 	kernel_neon_end();
 
 	return sha256_base_finish(desc, out);
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt