linux-kernel - [tip:x86/pti] x86/speculation: Remove unnecessary ret variable in cpu_show

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Date:   Wed, 28 Nov 2018 06:21:27 -0800
From:   tip-bot for Tim Chen <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     dave.hansen@...el.com, torvalds@...ux-foundation.org,
        peterz@...radead.org, keescook@...omium.org, luto@...nel.org,
        casey.schaufler@...el.com, jpoimboe@...hat.com,
        gregkh@...uxfoundation.org, mingo@...nel.org,
        longman9394@...il.com, david.c.stewart@...el.com,
        asit.k.mallick@...el.com, jcm@...hat.com, thomas.lendacky@....com,
        ak@...ux.intel.com, tim.c.chen@...ux.intel.com, jkosina@...e.cz,
        aarcange@...hat.com, dwmw@...zon.co.uk,
        linux-kernel@...r.kernel.org, hpa@...or.com, arjan@...ux.intel.com,
        tglx@...utronix.de
Subject: [tip:x86/pti] x86/speculation: Remove unnecessary ret variable in
 cpu_show_common()

Commit-ID:  b86bda0426853bfe8a3506c7d2a5b332760ae46b
Gitweb:     https://git.kernel.org/tip/b86bda0426853bfe8a3506c7d2a5b332760ae46b
Author:     Tim Chen <tim.c.chen@...ux.intel.com>
AuthorDate: Sun, 25 Nov 2018 19:33:31 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Wed, 28 Nov 2018 11:57:05 +0100

x86/speculation: Remove unnecessary ret variable in cpu_show_common()

Signed-off-by: Tim Chen <tim.c.chen@...ux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Reviewed-by: Ingo Molnar <mingo@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Andy Lutomirski <luto@...nel.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Jiri Kosina <jkosina@...e.cz>
Cc: Tom Lendacky <thomas.lendacky@....com>
Cc: Josh Poimboeuf <jpoimboe@...hat.com>
Cc: Andrea Arcangeli <aarcange@...hat.com>
Cc: David Woodhouse <dwmw@...zon.co.uk>
Cc: Andi Kleen <ak@...ux.intel.com>
Cc: Dave Hansen <dave.hansen@...el.com>
Cc: Casey Schaufler <casey.schaufler@...el.com>
Cc: Asit Mallick <asit.k.mallick@...el.com>
Cc: Arjan van de Ven <arjan@...ux.intel.com>
Cc: Jon Masters <jcm@...hat.com>
Cc: Waiman Long <longman9394@...il.com>
Cc: Greg KH <gregkh@...uxfoundation.org>
Cc: Dave Stewart <david.c.stewart@...el.com>
Cc: Kees Cook <keescook@...omium.org>
Cc: stable@...r.kernel.org
Link: https://lkml.kernel.org/r/20181125185003.783903657@linutronix.de


---
 arch/x86/kernel/cpu/bugs.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index 839ab4103e89..b52a48966e01 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -847,8 +847,6 @@ static ssize_t l1tf_show_state(char *buf)
 static ssize_t cpu_show_common(struct device *dev, struct device_attribute *attr,
 			       char *buf, unsigned int bug)
 {
-	int ret;
-
 	if (!boot_cpu_has_bug(bug))
 		return sprintf(buf, "Not affected\n");
 
@@ -866,13 +864,12 @@ static ssize_t cpu_show_common(struct device *dev, struct device_attribute *attr
 		return sprintf(buf, "Mitigation: __user pointer sanitization\n");
 
 	case X86_BUG_SPECTRE_V2:
-		ret = sprintf(buf, "%s%s%s%s%s%s\n", spectre_v2_strings[spectre_v2_enabled],
+		return sprintf(buf, "%s%s%s%s%s%s\n", spectre_v2_strings[spectre_v2_enabled],
 			       boot_cpu_has(X86_FEATURE_USE_IBPB) ? ", IBPB" : "",
 			       boot_cpu_has(X86_FEATURE_USE_IBRS_FW) ? ", IBRS_FW" : "",
 			       (x86_spec_ctrl_base & SPEC_CTRL_STIBP) ? ", STIBP" : "",
 			       boot_cpu_has(X86_FEATURE_RSB_CTXSW) ? ", RSB filling" : "",
 			       spectre_v2_module_string());
-		return ret;
 
 	case X86_BUG_SPEC_STORE_BYPASS:
 		return sprintf(buf, "%s\n", ssb_strings[ssb_mode]);