linux-kernel - [PATCH] x86/microcode/AMD: remove redundant null check on mc

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Message-Id: <20170315171010.17536-1-colin.king@canonical.com>
Date:   Wed, 15 Mar 2017 17:10:10 +0000
From:   Colin King <colin.king@...onical.com>
To:     Borislav Petkov <bp@...en8.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H . Peter Anvin" <hpa@...or.com>, x86@...nel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] x86/microcode/AMD: remove redundant null check on mc

From: Colin Ian King <colin.king@...onical.com>

mc is a pointer to the static u8 array amd_ucode_patch and
therefore can never be null, so the check is redundant. Remove it.

Detected by CoverityScan, CID#1372871 ("Logically Dead Code")

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 arch/x86/kernel/cpu/microcode/amd.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c
index 7889ae4..f2afe99 100644
--- a/arch/x86/kernel/cpu/microcode/amd.c
+++ b/arch/x86/kernel/cpu/microcode/amd.c
@@ -352,9 +352,6 @@ void reload_ucode_amd(void)
 	u32 rev, dummy;
 
 	mc = (struct microcode_amd *)amd_ucode_patch;
-	if (!mc)
-		return;
-
 	rdmsr(MSR_AMD64_PATCH_LEVEL, rev, dummy);
 
 	if (rev < mc->hdr.patch_id) {
-- 
2.10.2