linux-kernel - [PATCH v1 03/12] powerpc/pseries: CMM: Cleanup rc handling in cmm

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Message-Id: <20191031142933.10779-4-david@redhat.com>
Date:   Thu, 31 Oct 2019 15:29:24 +0100
From:   David Hildenbrand <david@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     linux-mm@...ck.org, linuxppc-dev@...ts.ozlabs.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        David Hildenbrand <david@...hat.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Michal Hocko <mhocko@...e.com>,
        Konstantin Khlebnikov <khlebnikov@...dex-team.ru>,
        Arun KS <arunks@...eaurora.org>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH v1 03/12] powerpc/pseries: CMM: Cleanup rc handling in cmm_init()

No need to initialize rc. Also, let's return 0 directly when succeeding.

Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Michael Ellerman <mpe@...erman.id.au>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Michal Hocko <mhocko@...e.com>
Cc: Konstantin Khlebnikov <khlebnikov@...dex-team.ru>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Arun KS <arunks@...eaurora.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: David Hildenbrand <david@...hat.com>
---
 arch/powerpc/platforms/pseries/cmm.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/platforms/pseries/cmm.c b/arch/powerpc/platforms/pseries/cmm.c
index fab049d3ea1e..738eb1681d40 100644
--- a/arch/powerpc/platforms/pseries/cmm.c
+++ b/arch/powerpc/platforms/pseries/cmm.c
@@ -669,7 +669,7 @@ static struct notifier_block cmm_mem_nb = {
  **/
 static int cmm_init(void)
 {
-	int rc = -ENOMEM;
+	int rc;
 
 	if (!firmware_has_feature(FW_FEATURE_CMO))
 		return -EOPNOTSUPP;
@@ -692,7 +692,7 @@ static int cmm_init(void)
 		goto out_unregister_notifier;
 
 	if (cmm_disabled)
-		return rc;
+		return 0;
 
 	cmm_thread_ptr = kthread_run(cmm_thread, NULL, "cmmthread");
 	if (IS_ERR(cmm_thread_ptr)) {
@@ -700,8 +700,7 @@ static int cmm_init(void)
 		goto out_unregister_notifier;
 	}
 
-	return rc;
-
+	return 0;
 out_unregister_notifier:
 	unregister_memory_notifier(&cmm_mem_nb);
 	unregister_memory_isolate_notifier(&cmm_mem_isolate_nb);
-- 
2.21.0