linux-kernel - [PATCH -mm] parse_integer: add checkpatch.pl notice

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Date:	Sat, 11 Jul 2015 00:17:56 +0300
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	akpm@...ux-foundation.org
Cc:	joe@...ches.com, linux-kernel@...r.kernel.org
Subject: [PATCH -mm] parse_integer: add checkpatch.pl notice

* remove check for strict_strto*(), they were fully removed long ago,

* add check for simple_strto*(), suggest replacements

  sscanf() is a bit icky to suggest because it accepts arbitrary amount
  of whitespace before any integer conversion, but assume programmer
  knows such twist and don't use sscanf() where real strictness is
  required (yes, sure...).

Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
---

 scripts/checkpatch.pl |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -5498,10 +5498,10 @@ sub process {
 			     "consider using a completion\n" . $herecurr);
 		}
 
-# recommend kstrto* over simple_strto* and strict_strto*
-		if ($line =~ /\b((simple|strict)_(strto(l|ll|ul|ull)))\s*\(/) {
+# simple_strto*() is deprecated
+		if ($line =~ /\b(simple_strto(l|ll|ul|ull))\s*\(/) {
 			WARN("CONSIDER_KSTRTO",
-			     "$1 is obsolete, use k$3 instead\n" . $herecurr);
+			     "$1 is obsolete, use parse_integer(), kstrto*(), kstrto*_from_user(), sscanf() instead\n" . $herecurr);
 		}
 
 # check for __initcall(), use device_initcall() explicitly or more appropriate function please
--
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