linux-kernel - [PATCH -next 2/4] crypto: starfive: Skip unneeded fallback allocation

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Date: Mon, 29 Apr 2024 14:06:38 +0800
From: Jia Jie Ho <jiajie.ho@...rfivetech.com>
To: Herbert Xu <herbert@...dor.apana.org.au>,
	"David S . Miller" <davem@...emloft.net>,
	linux-crypto@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH -next 2/4] crypto: starfive: Skip unneeded fallback allocation

Skip sw fallback allocation if RSA module failed to get device handle.

Signed-off-by: Jia Jie Ho <jiajie.ho@...rfivetech.com>
---
 drivers/crypto/starfive/jh7110-rsa.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/crypto/starfive/jh7110-rsa.c b/drivers/crypto/starfive/jh7110-rsa.c
index e642e948d747..4d7eb3d1e764 100644
--- a/drivers/crypto/starfive/jh7110-rsa.c
+++ b/drivers/crypto/starfive/jh7110-rsa.c
@@ -537,16 +537,14 @@ static int starfive_rsa_init_tfm(struct crypto_akcipher *tfm)
 {
 	struct starfive_cryp_ctx *ctx = akcipher_tfm_ctx(tfm);
 
+	ctx->cryp = starfive_cryp_find_dev(ctx);
+	if (!ctx->cryp)
+		return -ENODEV;
+
 	ctx->akcipher_fbk = crypto_alloc_akcipher("rsa-generic", 0, 0);
 	if (IS_ERR(ctx->akcipher_fbk))
 		return PTR_ERR(ctx->akcipher_fbk);
 
-	ctx->cryp = starfive_cryp_find_dev(ctx);
-	if (!ctx->cryp) {
-		crypto_free_akcipher(ctx->akcipher_fbk);
-		return -ENODEV;
-	}
-
 	akcipher_set_reqsize(tfm, sizeof(struct starfive_cryp_request_ctx) +
 			     sizeof(struct crypto_akcipher) + 32);
 
-- 
2.40.1