linux-kernel - [PATCH 5/8] powerpc/nvram: Return directly after a failed kmalloc() in dev_nvram

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Date:   Thu, 19 Jan 2017 17:59:00 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linuxppc-dev@...ts.ozlabs.org,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Daniel Axtens <dja@...ens.net>,
        Geliang Tang <geliangtang@....com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Nathan Fontenot <nfont@...ux.vnet.ibm.com>,
        Pan Xinhui <xinhui.pan@...ux.vnet.ibm.com>,
        Paul Gortmaker <paul.gortmaker@...driver.com>,
        Paul Mackerras <paulus@...ba.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 5/8] powerpc/nvram: Return directly after a failed kmalloc()
 in dev_nvram_read()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Thu, 19 Jan 2017 16:50:31 +0100

Return directly after a call of the function "kmalloc" failed here.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 arch/powerpc/kernel/nvram_64.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
index 463551589b97..68b970bcf2fc 100644
--- a/arch/powerpc/kernel/nvram_64.c
+++ b/arch/powerpc/kernel/nvram_64.c
@@ -762,10 +762,8 @@ static ssize_t dev_nvram_read(struct file *file, char __user *buf,
 	count = min(count, PAGE_SIZE);
 
 	tmp = kmalloc(count, GFP_KERNEL);
-	if (!tmp) {
-		ret = -ENOMEM;
-		goto out;
-	}
+	if (!tmp)
+		return -ENOMEM;
 
 	ret = ppc_md.nvram_read(tmp, count, ppos);
 	if (ret <= 0)
-- 
2.11.0