linux-kernel - [PATCH] crypto: aes-ni - Don't print message with KERN

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Message-ID: <adaprcuq33j.fsf@cisco.com>
Date:	Tue, 23 Jun 2009 10:20:16 -0700
From:	Roland Dreier <rdreier@...co.com>
To:	Huang Ying <ying.huang@...el.com>,
	Herbert Xu <herbert@...dor.apana.org.au>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] crypto: aes-ni - Don't print message with KERN_ERR on old system

When the aes-intel module is loaded on a system that does not have the
AES instructions, it prints

    Intel AES-NI instructions are not detected.

at level KERN_ERR.  Since aes-intel is aliased to "aes" it will be tried
whenever anything uses AES and spam the console.  This doesn't match
existing practice for how to handle "no hardware" when initializing a
module, so downgrade the message to KERN_INFO.

Signed-off-by: Roland Dreier <rolandd@...co.com>
---
 arch/x86/crypto/aesni-intel_glue.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/crypto/aesni-intel_glue.c b/arch/x86/crypto/aesni-intel_glue.c
index c580c5e..d3ec8d5 100644
--- a/arch/x86/crypto/aesni-intel_glue.c
+++ b/arch/x86/crypto/aesni-intel_glue.c
@@ -636,7 +636,7 @@ static int __init aesni_init(void)
 	int err;
 
 	if (!cpu_has_aes) {
-		printk(KERN_ERR "Intel AES-NI instructions are not detected.\n");
+		printk(KERN_INFO "Intel AES-NI instructions are not detected.\n");
 		return -ENODEV;
 	}
 	if ((err = crypto_register_alg(&aesni_alg)))
--
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