linux-kernel - [PATCH] crypto: jitter - Use min() to simplify jent_read

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Message-ID: <20240819141843.875665-2-thorsten.blum@toblux.com>
Date: Mon, 19 Aug 2024 16:18:44 +0200
From: Thorsten Blum <thorsten.blum@...lux.com>
To: herbert@...dor.apana.org.au,
	davem@...emloft.net
Cc: linux-crypto@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Thorsten Blum <thorsten.blum@...lux.com>
Subject: [PATCH] crypto: jitter - Use min() to simplify jent_read_entropy()

Use the min() macro to simplify the jent_read_entropy() function and
improve its readability.

Signed-off-by: Thorsten Blum <thorsten.blum@...lux.com>
---
 crypto/jitterentropy.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/crypto/jitterentropy.c b/crypto/jitterentropy.c
index d7056de8c0d7..3b390bd6c119 100644
--- a/crypto/jitterentropy.c
+++ b/crypto/jitterentropy.c
@@ -146,6 +146,7 @@ struct rand_data {
 #define JENT_ENTROPY_SAFETY_FACTOR	64
 
 #include <linux/fips.h>
+#include <linux/minmax.h>
 #include "jitterentropy.h"
 
 /***************************************************************************
@@ -638,10 +639,7 @@ int jent_read_entropy(struct rand_data *ec, unsigned char *data,
 			return -2;
 		}
 
-		if ((DATA_SIZE_BITS / 8) < len)
-			tocopy = (DATA_SIZE_BITS / 8);
-		else
-			tocopy = len;
+		tocopy = min(DATA_SIZE_BITS / 8, len);
 		if (jent_read_random_block(ec->hash_state, p, tocopy))
 			return -1;
 
-- 
2.46.0