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| author | Ben Hutchings <ben@decadent.org.uk> | 2017-05-25 12:58:38 +0000 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-06-05 09:28:06 +0200 |
| commit | b016d870cadae31d7c5eb2eef794d2e733f6595c (patch) | |
| tree | 3177494ff8fd977caaf853b7976c1cc4d792f4f5 /tools/lib/lockdep | |
| parent | bb7ea2a9af4c98ed70adf7627a2ba5d1ff1725e0 (diff) | |
| download | linux-b016d870cadae31d7c5eb2eef794d2e733f6595c.tar.gz linux-b016d870cadae31d7c5eb2eef794d2e733f6595c.tar.bz2 linux-b016d870cadae31d7c5eb2eef794d2e733f6595c.zip | |
tools/lib/lockdep: Fix 'set but not used' warnings
liblockdep defines trivial macros for working with interrupt flags, as
interrupts are never disabled in userland. This results in warnings
from gcc when -Wunused-but-set-variable is enabled, and it is enabled
by -Wall. Fix this by evaluating the flags parameter and casting it to
void.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: a.p.zijlstra@chello.nl
Link: http://lkml.kernel.org/r/20170525130005.5947-7-alexander.levin@verizon.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/lib/lockdep')
| -rw-r--r-- | tools/lib/lockdep/uinclude/linux/irqflags.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/tools/lib/lockdep/uinclude/linux/irqflags.h b/tools/lib/lockdep/uinclude/linux/irqflags.h index 6cc296f0fad0..df77669cfe1c 100644 --- a/tools/lib/lockdep/uinclude/linux/irqflags.h +++ b/tools/lib/lockdep/uinclude/linux/irqflags.h @@ -17,19 +17,19 @@ #define raw_local_irq_disable() do { } while (0) #define raw_local_irq_enable() do { } while (0) #define raw_local_irq_save(flags) ((flags) = 0) -#define raw_local_irq_restore(flags) do { } while (0) +#define raw_local_irq_restore(flags) ((void)(flags)) #define raw_local_save_flags(flags) ((flags) = 0) -#define raw_irqs_disabled_flags(flags) do { } while (0) +#define raw_irqs_disabled_flags(flags) ((void)(flags)) #define raw_irqs_disabled() 0 #define raw_safe_halt() #define local_irq_enable() do { } while (0) #define local_irq_disable() do { } while (0) #define local_irq_save(flags) ((flags) = 0) -#define local_irq_restore(flags) do { } while (0) +#define local_irq_restore(flags) ((void)(flags)) #define local_save_flags(flags) ((flags) = 0) #define irqs_disabled() (1) -#define irqs_disabled_flags(flags) (0) +#define irqs_disabled_flags(flags) ((void)(flags), 0) #define safe_halt() do { } while (0) #define trace_lock_release(x, y) |