linux-kernel - [PATCH v4 3/7] crypto: starfive: Skip unneeded key free

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Message-Id: <20240305071006.2181158-4-jiajie.ho@starfivetech.com>
Date: Tue,  5 Mar 2024 15:10:02 +0800
From: Jia Jie Ho <jiajie.ho@...rfivetech.com>
To: Herbert Xu <herbert@...dor.apana.org.au>,
	"David S . Miller" <davem@...emloft.net>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>,
	Vinod Koul <vkoul@...nel.org>,
	linux-crypto@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	dmaengine@...r.kernel.org
Subject: [PATCH v4 3/7] crypto: starfive: Skip unneeded key free

Skip unneeded kfree_sensitive if RSA module is using falback algo.

Signed-off-by: Jia Jie Ho <jiajie.ho@...rfivetech.com>
---
 drivers/crypto/starfive/jh7110-rsa.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/crypto/starfive/jh7110-rsa.c b/drivers/crypto/starfive/jh7110-rsa.c
index cf8bda7f0855..e642e948d747 100644
--- a/drivers/crypto/starfive/jh7110-rsa.c
+++ b/drivers/crypto/starfive/jh7110-rsa.c
@@ -45,6 +45,9 @@ static inline int starfive_pka_wait_done(struct starfive_cryp_ctx *ctx)
 
 static void starfive_rsa_free_key(struct starfive_rsa_key *key)
 {
+	if (!key->key_sz)
+		return;
+
 	kfree_sensitive(key->d);
 	kfree_sensitive(key->e);
 	kfree_sensitive(key->n);
-- 
2.34.1