From: Eric Biggers <ebiggers@kernel.org>
Date: Sun, 2 Nov 2025 23:42:05 +0000 (-0800)
Subject: lib/crypto: x86/blake2s: Drop check for nblocks == 0
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=c19bdf24cc274e96006267173d664df2ef4b13db;p=thirdparty%2Flinux.git

lib/crypto: x86/blake2s: Drop check for nblocks == 0

Since blake2s_compress() is always passed nblocks != 0, remove the
unnecessary check for nblocks == 0 from blake2s_compress_ssse3().

Note that this makes it consistent with blake2s_compress_avx512() in the
same file as well as the arm32 blake2s_compress().

Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20251102234209.62133-3-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
---

diff --git a/lib/crypto/x86/blake2s-core.S b/lib/crypto/x86/blake2s-core.S
index 093e7814f3879..aee13b97cc346 100644
--- a/lib/crypto/x86/blake2s-core.S
+++ b/lib/crypto/x86/blake2s-core.S
@@ -45,8 +45,6 @@ SIGMA2:
 
 .text
 SYM_FUNC_START(blake2s_compress_ssse3)
-	testq		%rdx,%rdx
-	je		.Lendofloop
 	movdqu		(%rdi),%xmm0
 	movdqu		0x10(%rdi),%xmm1
 	movdqa		ROT16(%rip),%xmm12
@@ -168,7 +166,6 @@ SYM_FUNC_START(blake2s_compress_ssse3)
 	movdqu		%xmm0,(%rdi)
 	movdqu		%xmm1,0x10(%rdi)
 	movdqu		%xmm14,0x20(%rdi)
-.Lendofloop:
 	RET
 SYM_FUNC_END(blake2s_compress_ssse3)