From 691d77b6b85c20e4166bafd12bd0131b28f95a16 Mon Sep 17 00:00:00 2001 From: Andy Whitcroft Date: Tue, 6 Jan 2009 14:41:16 -0800 Subject: checkpatch: add checks for in_atomic() in_atomic() is not for driver use so report any such use as an ERROR. Also in_atomic() is often used to determine if we may sleep, but it is not reliable in this use model therefore strongly discourage its use. Signed-off-by: Andy Whitcroft Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- scripts/checkpatch.pl | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'scripts/checkpatch.pl') diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index f88bb3e21cda..826cdbac0114 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -2466,6 +2466,15 @@ sub process { last; } } + +# whine mightly about in_atomic + if ($line =~ /\bin_atomic\s*\(/) { + if ($realfile =~ m@^drivers/@) { + ERROR("do not use in_atomic in drivers\n" . $herecurr); + } else { + WARN("use of in_atomic() is incorrect outside core kernel code\n" . $herecurr); + } + } } # If we have no input at all, then there is nothing to report on -- cgit v1.2.3-55-g7522