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author | Johannes Berg <johannes.berg@intel.com> | 2013-02-22 00:42:47 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-22 01:22:19 (GMT) |
commit | b1ae345d971664f70cfdc293029c40ccfb093591 (patch) | |
tree | dcc1e4e8aed9da51a87eca71a8b133a001487381 /block | |
parent | 3278bb748d2437eb1464765f36429e5d6aa91c38 (diff) | |
download | linux-b1ae345d971664f70cfdc293029c40ccfb093591.tar.xz |
lockdep: make lockdep_assert_held() not have a return value
I recently made the mistake of writing:
foo = lockdep_dereference_protected(..., lockdep_assert_held(...));
which is clearly bogus. If lockdep is disabled in the config this would
cause a compile failure, if it is enabled then it compiles and causes a
puzzling warning about dereferencing without the correct protection.
Wrap the macro in "do { ... } while (0)" to also fail compile for this
when lockdep is enabled.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'block')
0 files changed, 0 insertions, 0 deletions