People get this regularly wrong and it breaks the LTO builds, as it causes a section attribute conflict.
Original-patch-by: Andi Kleen <[email protected]> Signed-off-by: Joe Perches <[email protected]> --- scripts/checkpatch.pl | 24 ++++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 47016c3..1807f34 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -241,8 +241,11 @@ our $Sparse = qr{ __ref| __rcu }x; - -our $InitAttribute = qr{__(?:mem|cpu|dev|net_|)(?:initdata|initconst|init\b)}; +our $InitAttributePrefix = qr{__(?:mem|cpu|dev|net_|)}; +our $InitAttributeData = qr{$InitAttributePrefix(?:initdata\b)}; +our $InitAttributeConst = qr{$InitAttributePrefix(?:initconst\b)}; +our $InitAttributeInit = qr{$InitAttributePrefix(?:init\b)}; +our $InitAttribute = qr{$InitAttributeData|$InitAttributeConst|$InitAttributeInit}; # Notes to $Attribute: # We need \b after 'init' otherwise 'initconst' will cause a false positive in a check @@ -2775,6 +2778,23 @@ sub process { } } +# check for $InitAttributeData (ie: __initdata) with const + if ($line =~ /\bconst\b/ && $line =~ /($InitAttributeData)/) { + my $attr = $1; + $attr =~ /($InitAttributePrefix)(.*)/; + my $attr_prefix = $1; + my $attr_type = $2; + ERROR("INIT_ATTRIBUTE", + "Use of const init definition must use ${attr_prefix}initconst\n" . $herecurr); + } + +# check for $InitAttributeConst (ie: __initconst) without const + if ($line !~ /\bconst\b/ && $line =~ /($InitAttributeConst)/) { + my $attr = $1; + ERROR("INIT_ATTRIBUTE", + "Use of $attr requires a separate use of const\n" . $herecurr); + } + # check for spacing round square brackets; allowed: # 1. with a type on the left -- int [] a; # 2. at the beginning of a line for slice initialisers -- [0...10] = 5, -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
