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From: Tim Chen <tim.c.chen@linux.intel.com>
To: Jiri Kosina <jikos@kernel.org>, Thomas Gleixner <tglx@linutronix.de>
Cc: Tim Chen <tim.c.chen@linux.intel.com>,
	Tom Lendacky <thomas.lendacky@amd.com>,
	Ingo Molnar <mingo@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Josh Poimboeuf <jpoimboe@redhat.com>,
	Andrea Arcangeli <aarcange@redhat.com>,
	David Woodhouse <dwmw@amazon.co.uk>,
	Andi Kleen <ak@linux.intel.com>,
	Dave Hansen <dave.hansen@intel.com>,
	Casey Schaufler <casey.schaufler@intel.com>,
	Asit Mallick <asit.k.mallick@intel.com>,
	Arjan van de Ven <arjan@linux.intel.com>,
	Jon Masters <jcm@redhat.com>, Waiman Long <longman9394@gmail.com>,
	linux-kernel@vger.kernel.org, x86@kernel.org
Subject: [Patch v4 02/18] x86/speculation: Remove unnecessary ret variable in cpu_show_common()
Date: Tue, 30 Oct 2018 11:49:09 -0700	[thread overview]
Message-ID: <2013f8ec9f557bc908387bfcfc9f2e8d3a0b6ba5.1540923609.git.tim.c.chen@linux.intel.com> (raw)
In-Reply-To: <cover.1540923609.git.tim.c.chen@linux.intel.com>
In-Reply-To: <cover.1540923609.git.tim.c.chen@linux.intel.com>

Remove unnecessary ret variable in cpu_show_common() to make the
code more concise.

Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
---
 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 bbda9b6..6021b17 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -854,8 +854,6 @@ 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");
 
@@ -873,13 +871,12 @@ 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]);
-- 
2.9.4


  parent reply	other threads:[~2018-10-30 19:24 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-30 18:49 [Patch v4 00/18] Provide process property based options to enable Spectre v2 userspace-userspace protection* Tim Chen
2018-10-30 18:49 ` [Patch v4 01/18] x86/speculation: Clean up spectre_v2_parse_cmdline() Tim Chen
2018-10-30 18:49 ` Tim Chen [this message]
2018-10-30 18:49 ` [Patch v4 03/18] x86/speculation: Reorganize cpu_show_common() Tim Chen
2018-11-03 18:07   ` Thomas Gleixner
2018-11-05 19:12     ` Tim Chen
2018-11-05 19:17       ` Thomas Gleixner
2018-10-30 18:49 ` [Patch v4 04/18] x86/speculation: Add X86_FEATURE_USE_IBRS_ENHANCED Tim Chen
2018-10-30 18:49 ` [Patch v4 05/18] x86/speculation: Disable STIBP when enhanced IBRS is in use Tim Chen
2018-10-30 18:49 ` [Patch v4 06/18] smt: Create cpu_smt_enabled static key for SMT specific code Tim Chen
2018-10-30 18:49 ` [Patch v4 07/18] x86/smt: Convert cpu_smt_control check to cpu_smt_enabled static key Tim Chen
2018-11-03 18:29   ` Thomas Gleixner
2018-11-08  1:43     ` Tim Chen
2018-11-08 11:18       ` Thomas Gleixner
2018-10-30 18:49 ` [Patch v4 08/18] sched: Deprecate sched_smt_present and use " Tim Chen
2018-11-03 18:20   ` Thomas Gleixner
2018-11-09 22:08     ` Tim Chen
2018-10-30 18:49 ` [Patch v4 09/18] x86/speculation: Rename SSBD update functions Tim Chen
2018-10-30 18:49 ` [Patch v4 10/18] x86/speculation: Reorganize speculation control MSRs update Tim Chen
2018-10-30 18:49 ` [Patch v4 11/18] x86/speculation: Update comment on TIF_SSBD Tim Chen
2018-10-30 18:49 ` [Patch v4 12/18] x86: Group thread info flags by functionality Tim Chen
2018-10-30 18:49 ` [Patch v4 13/18] security: Update security level of a process when modifying its dumpability Tim Chen
2018-10-30 20:57   ` Schaufler, Casey
2018-10-30 21:30     ` Tim Chen
2018-10-30 21:53       ` Schaufler, Casey
2018-10-30 18:49 ` [Patch v4 14/18] x86/speculation: Turn on or off STIBP according to a task's TIF_STIBP Tim Chen
2018-10-30 18:49 ` [Patch v4 15/18] x86/speculation: Add Spectre v2 app to app protection modes Tim Chen
2018-10-30 18:49 ` [Patch v4 16/18] x86/speculation: Enable STIBP to protect security sensitive tasks Tim Chen
2018-10-30 21:07   ` Schaufler, Casey
2018-10-30 21:34     ` Tim Chen
2018-10-30 22:02       ` Schaufler, Casey
2018-10-30 18:49 ` [Patch v4 17/18] x86/speculation: Update SPEC_CTRL MSRs of remote CPUs Tim Chen
2018-11-04 19:49   ` Thomas Gleixner
2018-11-05 22:02     ` Tim Chen
2018-11-05 23:04       ` Thomas Gleixner
2018-11-05 23:59         ` Tim Chen
2018-11-06  7:46           ` Thomas Gleixner
2018-11-07  0:18             ` Tim Chen
2018-11-07 18:33               ` Waiman Long
2018-11-07 23:15                 ` Tim Chen
2018-11-07 23:03               ` Thomas Gleixner
2018-11-08  0:22                 ` Tim Chen
2018-10-30 18:49 ` [Patch v4 18/18] x86/speculation: Create PRCTL interface to restrict indirect branch speculation Tim Chen

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