diff options
Diffstat (limited to 'target/linux/generic/backport-5.4/080-wireguard-0060-crypto-x86-curve25519-Remove-unused-carry-variables.patch')
| -rw-r--r-- | target/linux/generic/backport-5.4/080-wireguard-0060-crypto-x86-curve25519-Remove-unused-carry-variables.patch | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.4/080-wireguard-0060-crypto-x86-curve25519-Remove-unused-carry-variables.patch b/target/linux/generic/backport-5.4/080-wireguard-0060-crypto-x86-curve25519-Remove-unused-carry-variables.patch new file mode 100644 index 0000000000..5a2d20a982 --- /dev/null +++ b/target/linux/generic/backport-5.4/080-wireguard-0060-crypto-x86-curve25519-Remove-unused-carry-variables.patch @@ -0,0 +1,46 @@ +From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 +From: Herbert Xu <herbert@gondor.apana.org.au> +Date: Thu, 23 Jul 2020 17:50:48 +1000 +Subject: [PATCH] crypto: x86/curve25519 - Remove unused carry variables + +commit 054a5540fb8f7268e2c79e9deab4242db15c8cba upstream. + +The carry variables are assigned but never used, which upsets +the compiler. This patch removes them. + +Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> +Reviewed-by: Karthikeyan Bhargavan <karthik.bhargavan@gmail.com> +Acked-by: Jason A. Donenfeld <Jason@zx2c4.com> +Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> +Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> +--- + arch/x86/crypto/curve25519-x86_64.c | 6 ++---- + 1 file changed, 2 insertions(+), 4 deletions(-) + +--- a/arch/x86/crypto/curve25519-x86_64.c ++++ b/arch/x86/crypto/curve25519-x86_64.c +@@ -948,10 +948,8 @@ static void store_felem(u64 *b, u64 *f) + { + u64 f30 = f[3U]; + u64 top_bit0 = f30 >> (u32)63U; +- u64 carry0; + u64 f31; + u64 top_bit; +- u64 carry; + u64 f0; + u64 f1; + u64 f2; +@@ -970,11 +968,11 @@ static void store_felem(u64 *b, u64 *f) + u64 o2; + u64 o3; + f[3U] = f30 & (u64)0x7fffffffffffffffU; +- carry0 = add_scalar(f, f, (u64)19U * top_bit0); ++ add_scalar(f, f, (u64)19U * top_bit0); + f31 = f[3U]; + top_bit = f31 >> (u32)63U; + f[3U] = f31 & (u64)0x7fffffffffffffffU; +- carry = add_scalar(f, f, (u64)19U * top_bit); ++ add_scalar(f, f, (u64)19U * top_bit); + f0 = f[0U]; + f1 = f[1U]; + f2 = f[2U]; |