checkpatch: remove GCC_BINARY_CONSTANT warning

This warning was there to avoid the use of 0bxxx values as they are not
supported by gcc prior to v4.3

Since cafa0010cd51f ("Raise the minimum required gcc version to 4.6"),
it's not an issue anymore and using such values can increase readability
of code.

Joe said:

: Seems sensible as the other compilers also support binary literals from
: relatively old versions.
: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3472.pdf
: https://software.intel.com/en-us/articles/c14-features-supported-by-intel-c-compiler

Link: http://lkml.kernel.org/r/392eeae782302ee8812a3c932a602035deed1609.1535351453.git.christophe.leroy@c-s.fr
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 161b0224d6ae9ca927269664eaded3bcce41e91f..c883ec55654fb27f36885b0f54cb7bdb44605066 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -4934,17 +4934,6 @@ sub process {
                while ($line =~ m{($Constant|$Lval)}g) {
                        my $var = $1;
 
-#gcc binary extension
-                       if ($var =~ /^$Binary$/) {
-                               if (WARN("GCC_BINARY_CONSTANT",
-                                        "Avoid gcc v4.3+ binary constant extension: <$var>\n" . $herecurr) &&
-                                   $fix) {
-                                       my $hexval = sprintf("0x%x", oct($var));
-                                       $fixed[$fixlinenr] =~
-                                           s/\b$var\b/$hexval/;
-                               }
-                       }
-
 #CamelCase
                        if ($var !~ /^$Constant$/ &&
                            $var =~ /[A-Z][a-z]|[a-z][A-Z]/ &&