diff options
| author | Joe Perches <joe@perches.com> | 2015-11-06 16:31:37 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-06 17:50:42 -0800 |
| commit | 6d32f7a391466ed89d8a1018fdff5330766cc272 (patch) | |
| tree | 049ca93f373281469b42d3ce38a4de1fd863b1b3 /scripts/checkpatch.pl | |
| parent | 369c8dd390baffd77b892b563d03f800e65d2dfa (diff) | |
checkpatch: improve the unnecessary initialisers tests
Global and static variables don't need to be initialized to 0.
There is already a test for this but the output message doesn't
mention booleans initialized to false.
Improve the output message and the test by adding various forms
with possible specific integer types and possible multiple zeros.
Miscellanea:
o Use a variable to hold the possible 0 test
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Shailendra Verma <shailendra.v@samsung.com>
Tested-by: Shailendra Verma <shailendra.v@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts/checkpatch.pl')
| -rwxr-xr-x | scripts/checkpatch.pl | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 2d88cbf9f884..2b3c22808c3b 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -370,6 +370,8 @@ our $typeTypedefs = qr{(?x: $typeKernelTypedefs\b )}; +our $zero_initializer = qr{(?:(?:0[xX])?0+$Int_type?|NULL|false)\b}; + our $logFunctions = qr{(?x: printk(?:_ratelimited|_once|)| (?:[a-z0-9]+_){1,2}(?:printk|emerg|alert|crit|err|warning|warn|notice|info|debug|dbg|vdbg|devel|cont|WARN)(?:_ratelimited|_once|)| @@ -3334,21 +3336,20 @@ sub process { } # check for global initialisers. - if ($line =~ /^\+$Type\s*$Ident(?:\s+$Modifier)*\s*=\s*(?:0|NULL|false)\s*;/) { + if ($line =~ /^\+$Type\s*$Ident(?:\s+$Modifier)*\s*=\s*($zero_initializer)\s*;/) { if (ERROR("GLOBAL_INITIALISERS", - "do not initialise globals to 0 or NULL\n" . - $herecurr) && + "do not initialise globals to $1\n" . $herecurr) && $fix) { - $fixed[$fixlinenr] =~ s/(^.$Type\s*$Ident(?:\s+$Modifier)*)\s*=\s*(0|NULL|false)\s*;/$1;/; + $fixed[$fixlinenr] =~ s/(^.$Type\s*$Ident(?:\s+$Modifier)*)\s*=\s*$zero_initializer\s*;/$1;/; } } # check for static initialisers. - if ($line =~ /^\+.*\bstatic\s.*=\s*(0|NULL|false)\s*;/) { + if ($line =~ /^\+.*\bstatic\s.*=\s*($zero_initializer)\s*;/) { if (ERROR("INITIALISED_STATIC", - "do not initialise statics to 0 or NULL\n" . + "do not initialise statics to $1\n" . $herecurr) && $fix) { - $fixed[$fixlinenr] =~ s/(\bstatic\s.*?)\s*=\s*(0|NULL|false)\s*;/$1;/; + $fixed[$fixlinenr] =~ s/(\bstatic\s.*?)\s*=\s*$zero_initializer\s*;/$1;/; } } |