diff options
| author | Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> | 2013-10-17 19:45:29 +0900 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-10-18 21:58:54 +0200 |
| commit | b0267507dfd0187fb7840a0ec461a510a7f041c5 (patch) | |
| tree | 8d17053d2ac87eb4f53120dc8d83cc084819096a /kernel/Kconfig.freezer | |
| parent | 04919afb85c8f007b7326c4da5eb61c52e91b9c7 (diff) | |
| download | talos-obmc-linux-b0267507dfd0187fb7840a0ec461a510a7f041c5.tar.gz talos-obmc-linux-b0267507dfd0187fb7840a0ec461a510a7f041c5.zip | |
mutex: Avoid gcc version dependent __builtin_constant_p() usage
Commit 040a0a37 ("mutex: Add support for wound/wait style locks")
used "!__builtin_constant_p(p == NULL)" but gcc 3.x cannot
handle such expression correctly, leading to boot failure when
built with CONFIG_DEBUG_MUTEXES=y.
Fix it by explicitly passing a bool which tells whether p != NULL
or not.
[ PeterZ: This is a sad patch, but provided it actually generates
similar code I suppose its the best we can do bar whole
sale deprecating gcc-3. ]
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: peterz@infradead.org
Cc: imirkin@alum.mit.edu
Cc: daniel.vetter@ffwll.ch
Cc: robdclark@gmail.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/201310171945.AGB17114.FSQVtHOJFOOFML@I-love.SAKURA.ne.jp
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/Kconfig.freezer')
0 files changed, 0 insertions, 0 deletions
