linux-kernel - [4.15 & 4.14 stable 04/12] x86/microcode: Get rid of struct apply_microcode

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Date:   Fri,  6 Apr 2018 11:30:18 -0700
From:   Ashok Raj <ashok.raj@...el.com>
To:     gregkh@...uxfoundation.org, tglx@...utronix.de
Cc:     Borislav Petkov <bp@...e.de>, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org, thomas.lendacky@....com,
        arjan.van.de.ven@...el.com, asit.k.mallick@...el.com
Subject: [4.15 & 4.14 stable 04/12] x86/microcode: Get rid of struct apply_microcode_ctx

From: Borislav Petkov <bp@...e.de>

commit 854857f5944c59a881ff607b37ed9ed41d031a3b upstream

It is a useless remnant from earlier times. Use the ucode_state enum
directly.

No functional change.

Signed-off-by: Borislav Petkov <bp@...e.de>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Tested-by: Tom Lendacky <thomas.lendacky@....com>
Tested-by: Ashok Raj <ashok.raj@...el.com>
Cc: Arjan Van De Ven <arjan.van.de.ven@...el.com>
Cc: Tom Lendacky <thomas.lendacky@....com>
Cc: Asit K Mallick <asit.k.mallick@...el.com>
Cc: stable@...r.kernel.org
Link: https://lkml.kernel.org/r/20180228102846.13447-2-bp@alien8.de
---
 arch/x86/kernel/cpu/microcode/core.c | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/arch/x86/kernel/cpu/microcode/core.c b/arch/x86/kernel/cpu/microcode/core.c
index b40b56e..cbeace2 100644
--- a/arch/x86/kernel/cpu/microcode/core.c
+++ b/arch/x86/kernel/cpu/microcode/core.c
@@ -373,26 +373,23 @@ static int collect_cpu_info(int cpu)
 	return ret;
 }
 
-struct apply_microcode_ctx {
-	enum ucode_state err;
-};
-
 static void apply_microcode_local(void *arg)
 {
-	struct apply_microcode_ctx *ctx = arg;
+	enum ucode_state *err = arg;
 
-	ctx->err = microcode_ops->apply_microcode(smp_processor_id());
+	*err = microcode_ops->apply_microcode(smp_processor_id());
 }
 
 static int apply_microcode_on_target(int cpu)
 {
-	struct apply_microcode_ctx ctx = { .err = 0 };
+	enum ucode_state err;
 	int ret;
 
-	ret = smp_call_function_single(cpu, apply_microcode_local, &ctx, 1);
-	if (!ret)
-		ret = ctx.err;
-
+	ret = smp_call_function_single(cpu, apply_microcode_local, &err, 1);
+	if (!ret) {
+		if (err == UCODE_ERROR)
+			ret = 1;
+	}
 	return ret;
 }
 
-- 
2.7.4