linux-kernel - [PATCH] EDAC/mce_amd: Output Scalable MCA processor warning once

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Date:   Mon, 17 Feb 2020 08:46:27 -0500
From:   Prarit Bhargava <prarit@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     Prarit Bhargava <prarit@...hat.com>,
        Borislav Petkov <bp@...en8.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Tony Luck <tony.luck@...el.com>,
        James Morse <james.morse@....com>,
        Robert Richter <rrichter@...vell.com>,
        linux-edac@...r.kernel.org
Subject: [PATCH] EDAC/mce_amd: Output Scalable MCA processor warning once

This warning is output for every virtual cpu in a guest on an EPYC 2
system.  The warning only needs to be logged one time.

Output the warning only once.

Signed-off-by: Prarit Bhargava <prarit@...hat.com>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: Tony Luck <tony.luck@...el.com>
Cc: James Morse <james.morse@....com>
Cc: Robert Richter <rrichter@...vell.com>
Cc: linux-edac@...r.kernel.org
---
 drivers/edac/mce_amd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/edac/mce_amd.c b/drivers/edac/mce_amd.c
index ea980c556f2e..8874b7722b2f 100644
--- a/drivers/edac/mce_amd.c
+++ b/drivers/edac/mce_amd.c
@@ -1239,7 +1239,7 @@ static int __init mce_amd_init(void)
 
 	case 0x17:
 	case 0x18:
-		pr_warn("Decoding supported only on Scalable MCA processors.\n");
+		pr_warn_once("Decoding supported only on Scalable MCA processors.\n");
 		return -EINVAL;
 
 	default:
-- 
2.21.1