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checkpatch.pl: add "prefer __packed" check 

There's a __packed #define for __attribute__((packed)).  Add a checkpatch
to tell people about it.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joe Perches 2011-01-12 17:00:00 -08:00 committed by Linus Torvalds
parent 88f8831c05
commit 3d130fd03e
1 changed files with 5 additions and 0 deletions
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5
scripts/checkpatch.pl
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@ -2743,6 +2743,11 @@ sub process {
WARN("plain inline is preferred over $1\n" . $herecurr);
}
# Check for __attribute__ packed, prefer __packed
if ($line =~ /\b__attribute__\s*\(\s*\(.*\bpacked\b/) {
WARN("__packed is preferred over __attribute__((packed))\n" . $herecurr);
}
# check for sizeof(&)
if ($line =~ /\bsizeof\s*\(\s*\&/) {
WARN("sizeof(& should be avoided\n" . $herecurr);