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openwrt-xburst/target/linux/generic/patches-3.0/000-upstream-fix-__packed.patch
florian 6916a71abc [kernel] refresh 3.0 patches
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29043 3c298f89-4303-0410-b956-a3cf2f4a3e73
2011-11-13 19:19:14 +00:00

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checkpatch.pl warns about using __attribute__((packed)) in kernel
headers: "__packed is preferred over __attribute__((packed))". If one
follows that advice it could cause problems in the exported header
files, because the outside world doesn't know about this shortcut.
For example busybox will fail to compile:
CC miscutils/ubi_attach_detach.o
In file included from miscutils/ubi_attach_detach.c:27:0:
/usr/include/mtd/ubi-user.h:330:3: error: conflicting types for __packed
/usr/include/mtd/ubi-user.h:314:3: note: previous declaration of __packed was here
...
Fix the problem by substituting __packed with __attribute__((packed)) in
the header_install.pl script.
Cc: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
CC: Joe Perches <joe@perches.com>
Signed-off-by: Markus Trippelsdorf <markus@trippelsdorf.de>
---
scripts/headers_install.pl | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
--- a/scripts/headers_install.pl
+++ b/scripts/headers_install.pl
@@ -35,6 +35,7 @@ foreach my $file (@files) {
$line =~ s/([\s(])__iomem\s/$1/g;
$line =~ s/\s__attribute_const__\s/ /g;
$line =~ s/\s__attribute_const__$//g;
+ $line =~ s/\b__packed\b/__attribute__((packed))/g;
$line =~ s/^#include <linux\/compiler.h>//;
$line =~ s/(^|\s)(inline)\b/$1__$2__/g;
$line =~ s/(^|\s)(asm)\b(\s|[(]|$)/$1__$2__$3/g;