diff options
author | Joe Perches <joe@perches.com> | 2015-06-25 22:02:49 (GMT) |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-06-26 00:00:41 (GMT) |
commit | e6176fa4728fb6df4f66c3e9c08736c369e71f75 (patch) | |
tree | 97f9337a285c00467e8204c3958d9dc5bf26e37e /scripts/checkpatch.pl | |
parent | cb426e99ff9225e94fb56bd4c5cfcce8b78a3904 (diff) | |
download | linux-e6176fa4728fb6df4f66c3e9c08736c369e71f75.tar.xz |
checkpatch: add --strict warning for c99 fixed size typedefs : int<size>_t
Using declarations like u_int16_t in kernel code is not preferred.
Suggest the kernel sized types instead of the c99 types when not in the
uapi directory.
Add a $typeC99Typedefs variable for the types to check and neaten the
other typedef variables.
Signed-off-by: Joe Perches <joe@perches.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 | 31 |
1 files changed, 25 insertions, 6 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 3f2ff26..f7f222a 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -347,15 +347,20 @@ our $UTF8 = qr{ | $NON_ASCII_UTF8 }x; +our $typeC99Typedefs = qr{(?:__)?(?:[us]_?)?int_?(?:8|16|32|64)_t}; our $typeOtherOSTypedefs = qr{(?x: u_(?:char|short|int|long) | # bsd u(?:nchar|short|int|long) # sysv )}; - -our $typeTypedefs = qr{(?x: +our $typeKernelTypedefs = qr{(?x: (?:__)?(?:u|s|be|le)(?:8|16|32|64)| atomic_t )}; +our $typeTypedefs = qr{(?x: + $typeC99Typedefs\b| + $typeOtherOSTypedefs\b| + $typeKernelTypedefs\b +)}; our $logFunctions = qr{(?x: printk(?:_ratelimited|_once|)| @@ -516,7 +521,6 @@ sub build_types { my $allWithAttr = "(?x: \n" . join("|\n ", @typeListWithAttr) . "\n)"; $Modifier = qr{(?:$Attribute|$Sparse|$mods)}; $BasicType = qr{ - (?:$typeOtherOSTypedefs\b)| (?:$typeTypedefs\b)| (?:${all}\b) }x; @@ -524,7 +528,6 @@ sub build_types { (?:$Modifier\s+|const\s+)* (?: (?:typeof|__typeof__)\s*\([^\)]*\)| - (?:$typeOtherOSTypedefs\b)| (?:$typeTypedefs\b)| (?:${all}\b) ) @@ -542,7 +545,6 @@ sub build_types { (?: (?:typeof|__typeof__)\s*\([^\)]*\)| (?:$typeTypedefs\b)| - (?:$typeOtherOSTypedefs\b)| (?:${allWithAttr}\b) ) (?:\s+$Modifier|\s+const)* @@ -3264,7 +3266,6 @@ sub process { $line !~ /\btypedef\s+$Type\s*\(\s*\*?$Ident\s*\)\s*\(/ && $line !~ /\btypedef\s+$Type\s+$Ident\s*\(/ && $line !~ /\b$typeTypedefs\b/ && - $line !~ /\b$typeOtherOSTypedefs\b/ && $line !~ /\b__bitwise(?:__|)\b/) { WARN("NEW_TYPEDEFS", "do not add new typedefs\n" . $herecurr); @@ -4980,6 +4981,24 @@ sub process { "Using weak declarations can have unintended link defects\n" . $herecurr); } +# check for c99 types like uint8_t used outside of uapi/ + if ($realfile !~ m@\binclude/uapi/@ && + $line =~ /\b($Declare)\s*$Ident\s*[=;,\[]/) { + my $type = $1; + if ($type =~ /\b($typeC99Typedefs)\b/) { + $type = $1; + my $kernel_type = 'u'; + $kernel_type = 's' if ($type =~ /^_*[si]/); + $type =~ /(\d+)/; + $kernel_type .= $1; + if (CHK("PREFER_KERNEL_TYPES", + "Prefer kernel type '$kernel_type' over '$type'\n" . $herecurr) && + $fix) { + $fixed[$fixlinenr] =~ s/\b$type\b/$kernel_type/; + } + } + } + # check for sizeof(&) if ($line =~ /\bsizeof\s*\(\s*\&/) { WARN("SIZEOF_ADDRESS", |