syntastic/syntax_checkers/c/checkpatch.vim

"============================================================================
"File:        checkpatch.vim
"Description: Syntax checking plugin for syntastic.vim using checkpatch.pl 
"Maintainer:  Daniel Walker <dwalker at fifo99 dot com>
"License:     This program is free software. It comes without any warranty,
"             to the extent permitted by applicable law. You can redistribute
"             it and/or modify it under the terms of the Do What The Fuck You
"             Want To Public License, Version 2, as published by Sam Hocevar.
"             See http://sam.zoy.org/wtfpl/COPYING for more details.
"============================================================================
if exists("loaded_checkpatch_syntax_checker")
    finish
endif
let loaded_checkpatch_syntax_checker = 1

" Bail if the user doesn't have `checkpatch.pl` or ./scripts/checkpatch.pl installed.
if executable("checkpatch.pl")
    let g:syntastic_c_checker_checkpatch_location = 'checkpatch.pl'
elseif executable("./scripts/checkpatch.pl")
    let g:syntastic_c_checker_checkpatch_location = './scripts/checkpatch.pl'
endif

function SyntaxCheckers_c_checkpatch_IsAvailable()
    return exists("g:syntastic_c_checker_checkpatch_location")
endfunction


function! SyntaxCheckers_c_checkpatch_GetLocList()
    let makeprg = syntastic#makeprg#build({
                \ 'exe': g:syntastic_c_checker_checkpatch_location,
                \ 'args': '--no-summary --no-tree --terse --file',
                \ 'subchecker': 'checkpatch' })

    let errorformat = '%f:%l: %tARNING: %m,%f:%l: %tRROR: %m'

    return SyntasticMake({ 'makeprg': makeprg,
                         \ 'errorformat': errorformat,
                         \ 'defaults': {'bufnr': bufnr("")} })
endfunction

call g:SyntasticRegistry.CreateAndRegisterChecker({
    \ 'filetype': 'c',
    \ 'name': 'checkpatch'})