linux-kernel - [PATCH 5.11 544/775] wireguard: kconfig: use arm chacha even with no neon

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Date:   Mon,  1 Mar 2021 17:11:52 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Ilya Lipnitskiy <ilya.lipnitskiy@...il.com>,
        "Jason A. Donenfeld" <Jason@...c4.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.11 544/775] wireguard: kconfig: use arm chacha even with no neon

From: Jason A. Donenfeld <Jason@...c4.com>

[ Upstream commit bce2473927af8de12ad131a743f55d69d358c0b9 ]

The condition here was incorrect: a non-neon fallback implementation is
available on arm32 when NEON is not supported.

Reported-by: Ilya Lipnitskiy <ilya.lipnitskiy@...il.com>
Fixes: e7096c131e51 ("net: WireGuard secure network tunnel")
Signed-off-by: Jason A. Donenfeld <Jason@...c4.com>
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 260f9f46668b8..63339d29be905 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -87,7 +87,7 @@ config WIREGUARD
 	select CRYPTO_CURVE25519_X86 if X86 && 64BIT
 	select ARM_CRYPTO if ARM
 	select ARM64_CRYPTO if ARM64
-	select CRYPTO_CHACHA20_NEON if (ARM || ARM64) && KERNEL_MODE_NEON
+	select CRYPTO_CHACHA20_NEON if ARM || (ARM64 && KERNEL_MODE_NEON)
 	select CRYPTO_POLY1305_NEON if ARM64 && KERNEL_MODE_NEON
 	select CRYPTO_POLY1305_ARM if ARM
 	select CRYPTO_CURVE25519_NEON if ARM && KERNEL_MODE_NEON
-- 
2.27.0