linux-kernel - [PATCH 13/25] x86/MCE/AMD: Skip denormalization if no interleaving

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Date:   Fri,  7 May 2021 15:01:28 -0400
From:   Yazen Ghannam <Yazen.Ghannam@....com>
To:     linux-edac@...r.kernel.org
Cc:     Yazen Ghannam <Yazen.Ghannam@....com>,
        linux-kernel@...r.kernel.org, tony.luck@...el.com, x86@...nel.org,
        Smita.KoralahalliChannabasappa@....com
Subject: [PATCH 13/25] x86/MCE/AMD: Skip denormalization if no interleaving

From: Yazen Ghannam <yazen.ghannam@....com>

Denormalization doesn't apply to the "no interleaving" mode, so return
early without error in this case.

Signed-off-by: Yazen Ghannam <yazen.ghannam@....com>
---
 arch/x86/kernel/cpu/mce/amd.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/x86/kernel/cpu/mce/amd.c b/arch/x86/kernel/cpu/mce/amd.c
index a60d9d275d14..605376351cc8 100644
--- a/arch/x86/kernel/cpu/mce/amd.c
+++ b/arch/x86/kernel/cpu/mce/amd.c
@@ -838,6 +838,10 @@ static int denormalize_addr(struct addr_ctx *ctx)
 	u8 intlv_num_dies, intlv_num_chan, intlv_num_sockets;
 	u8 num_intlv_bits, cs_mask = 0;
 
+	/* Return early if no interleaving. */
+	if (ctx->intlv_mode == NONE)
+		return 0;
+
 	if (get_intlv_addr_bit(ctx))
 		return -EINVAL;
 
-- 
2.25.1