linux-kernel - [PATCH -next 1/3] powerpc/rtas: Replaced simple

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Date:   Wed, 26 May 2021 09:20:18 +0000
From:   Chen Huang <chenhuang5@...wei.com>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        "Boris Ostrovsky" <boris.ostrovsky@...cle.com>,
        Juergen Gross <jgross@...e.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Mark Fasheh <mark@...heh.com>,
        Joel Becker <jlbec@...lplan.org>,
        Joseph Qi <joseph.qi@...ux.alibaba.com>,
        Nathan Lynch <nathanl@...ux.ibm.com>,
        Andrew Donnellan <ajd@...ux.ibm.com>,
        Alexey Kardashevskiy <aik@...abs.ru>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        "Jens Axboe" <axboe@...nel.dk>,
        Yang Yingliang <yangyingliang@...wei.com>,
        "Masahiro Yamada" <masahiroy@...nel.org>,
        Dan Carpenter <dan.carpenter@...cle.com>
CC:     <linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>,
        <xen-devel@...ts.xenproject.org>, <ocfs2-devel@....oracle.com>,
        Chen Huang <chenhuang5@...wei.com>
Subject: [PATCH -next 1/3] powerpc/rtas: Replaced simple_strtoull() with kstrtoull()

The simple_strtoull() function is deprecated in some situation, since
it does not check for the range overflow, use kstrtoull() instead.

Signed-off-by: Chen Huang <chenhuang5@...wei.com>
---
 arch/powerpc/kernel/rtas-proc.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/arch/powerpc/kernel/rtas-proc.c b/arch/powerpc/kernel/rtas-proc.c
index 6857a5b0a1c3..117886782ebd 100644
--- a/arch/powerpc/kernel/rtas-proc.c
+++ b/arch/powerpc/kernel/rtas-proc.c
@@ -259,7 +259,6 @@ __initcall(proc_rtas_init);
 static int parse_number(const char __user *p, size_t count, u64 *val)
 {
 	char buf[40];
-	char *end;
 
 	if (count > 39)
 		return -EINVAL;
@@ -269,11 +268,7 @@ static int parse_number(const char __user *p, size_t count, u64 *val)
 
 	buf[count] = 0;
 
-	*val = simple_strtoull(buf, &end, 10);
-	if (*end && *end != '\n')
-		return -EINVAL;
-
-	return 0;
+	return kstrtoull(buf, 10, val);
 }
 
 /* ****************************************************************** */
-- 
2.25.1