From a7e1d98f3e2a0d858fddcac7c66b78b6dcfd9d2e Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Thu, 23 Jan 2014 15:54:08 -0800 Subject: [PATCH] headers_check: special case seqbuf_dump() "make headers_check" warns about soundcard.h for (at least) five years now: [...]/usr/include/linux/soundcard.h:1054: userspace cannot reference function or variable defined in the kernel We're apparently stuck with providing OSSlib-3.8 compatibility, so let's special case this declaration just to silence it. Notes: 0) Support for OSSlib post 3.8 was already removed in commit 43a990765a ("sound: Remove OSSlib stuff from linux/soundcard.h"). Five years have passed since that commit: do people still care about OSSlib-3.8? If not, quite a bit of code could be remove from soundcard.h (and probably ultrasound.h). 2) By the way, what is actually meant by: It is no longer possible to actually link against OSSlib with this header, but we still provide these macros for programs using them. Doesn't that mean compatibility to OSSlib isn't even useful? 3) Anyhow, a previous discussion soundcard.h, which led to that commit, starts at https://lkml.org/lkml/2009/1/20/349 . 4) And, yes, I sneaked in a whitespace fix. Signed-off-by: Paul Bolle Cc: Takashi Iwai Acked-by: Arnd Bergmann Cc: Michal Marek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- scripts/headers_check.pl | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/scripts/headers_check.pl b/scripts/headers_check.pl index 64ac2380e4d5..62320f93e903 100644 --- a/scripts/headers_check.pl +++ b/scripts/headers_check.pl @@ -65,7 +65,11 @@ sub check_include sub check_declarations { - if ($line =~m/^(\s*extern|unsigned|char|short|int|long|void)\b/) { + # soundcard.h is what it is + if ($line =~ m/^void seqbuf_dump\(void\);/) { + return; + } + if ($line =~ m/^(\s*extern|unsigned|char|short|int|long|void)\b/) { printf STDERR "$filename:$lineno: " . "userspace cannot reference function or " . "variable defined in the kernel\n"; -- 2.20.1