linux-kernel - [PATCH 4/4] x86/microcode/core: Return an error only when necessary

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Message-Id: <20230130161709.11615-5-bp@alien8.de>
Date:   Mon, 30 Jan 2023 17:17:09 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     X86 ML <x86@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 4/4] x86/microcode/core: Return an error only when necessary

From: "Borislav Petkov (AMD)" <bp@...en8.de>

Return an error from the late loading function which is run on each CPU
only when an error has actually been encountered during the update.

Signed-off-by: Borislav Petkov (AMD) <bp@...en8.de>
---
 arch/x86/kernel/cpu/microcode/core.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/cpu/microcode/core.c b/arch/x86/kernel/cpu/microcode/core.c
index 931d3c3262ec..d52042d5faae 100644
--- a/arch/x86/kernel/cpu/microcode/core.c
+++ b/arch/x86/kernel/cpu/microcode/core.c
@@ -409,10 +409,10 @@ static int __reload_late(void *info)
 		goto wait_for_siblings;
 
 	if (err >= UCODE_NFOUND) {
-		if (err == UCODE_ERROR)
+		if (err == UCODE_ERROR) {
 			pr_warn("Error reloading microcode on CPU %d\n", cpu);
-
-		ret = -1;
+			ret = -1;
+		}
 	}
 
 wait_for_siblings:
-- 
2.35.1