linux-kernel - [tip:x86/pti] x86/speculation: Clean up spectre_v2_parse

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Message-ID: <tip-24848509aa55eac39d524b587b051f4e86df3c12@git.kernel.org>
Date:   Wed, 28 Nov 2018 06:20:51 -0800
From:   tip-bot for Tim Chen <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     asit.k.mallick@...el.com, dave.hansen@...el.com, dwmw@...zon.co.uk,
        tglx@...utronix.de, jkosina@...e.cz, tim.c.chen@...ux.intel.com,
        mingo@...nel.org, jcm@...hat.com, torvalds@...ux-foundation.org,
        ak@...ux.intel.com, peterz@...radead.org, arjan@...ux.intel.com,
        thomas.lendacky@....com, gregkh@...uxfoundation.org,
        aarcange@...hat.com, linux-kernel@...r.kernel.org,
        casey.schaufler@...el.com, david.c.stewart@...el.com,
        jpoimboe@...hat.com, longman9394@...il.com, keescook@...omium.org,
        luto@...nel.org, hpa@...or.com
Subject: [tip:x86/pti] x86/speculation: Clean up spectre_v2_parse_cmdline()

Commit-ID:  24848509aa55eac39d524b587b051f4e86df3c12
Gitweb:     https://git.kernel.org/tip/24848509aa55eac39d524b587b051f4e86df3c12
Author:     Tim Chen <tim.c.chen@...ux.intel.com>
AuthorDate: Sun, 25 Nov 2018 19:33:30 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Wed, 28 Nov 2018 11:57:04 +0100

x86/speculation: Clean up spectre_v2_parse_cmdline()

Remove the unnecessary 'else' statement in spectre_v2_parse_cmdline()
to save an indentation level.

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/20181125185003.688010903@linutronix.de


---
 arch/x86/kernel/cpu/bugs.c | 27 +++++++++++++--------------
 1 file changed, 13 insertions(+), 14 deletions(-)

diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index 7f6d8159398e..839ab4103e89 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -276,22 +276,21 @@ static enum spectre_v2_mitigation_cmd __init spectre_v2_parse_cmdline(void)
 
 	if (cmdline_find_option_bool(boot_command_line, "nospectre_v2"))
 		return SPECTRE_V2_CMD_NONE;
-	else {
-		ret = cmdline_find_option(boot_command_line, "spectre_v2", arg, sizeof(arg));
-		if (ret < 0)
-			return SPECTRE_V2_CMD_AUTO;
 
-		for (i = 0; i < ARRAY_SIZE(mitigation_options); i++) {
-			if (!match_option(arg, ret, mitigation_options[i].option))
-				continue;
-			cmd = mitigation_options[i].cmd;
-			break;
-		}
+	ret = cmdline_find_option(boot_command_line, "spectre_v2", arg, sizeof(arg));
+	if (ret < 0)
+		return SPECTRE_V2_CMD_AUTO;
 
-		if (i >= ARRAY_SIZE(mitigation_options)) {
-			pr_err("unknown option (%s). Switching to AUTO select\n", arg);
-			return SPECTRE_V2_CMD_AUTO;
-		}
+	for (i = 0; i < ARRAY_SIZE(mitigation_options); i++) {
+		if (!match_option(arg, ret, mitigation_options[i].option))
+			continue;
+		cmd = mitigation_options[i].cmd;
+		break;
+	}
+
+	if (i >= ARRAY_SIZE(mitigation_options)) {
+		pr_err("unknown option (%s). Switching to AUTO select\n", arg);
+		return SPECTRE_V2_CMD_AUTO;
 	}
 
 	if ((cmd == SPECTRE_V2_CMD_RETPOLINE ||