Commit-ID: b016d870cadae31d7c5eb2eef794d2e733f6595c Gitweb: http://git.kernel.org/tip/b016d870cadae31d7c5eb2eef794d2e733f6595c Author: Ben Hutchings <b...@decadent.org.uk> AuthorDate: Thu, 25 May 2017 12:58:38 +0000 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Mon, 5 Jun 2017 09:28:06 +0200
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 <b...@decadent.org.uk> Signed-off-by: Sasha Levin <sasha.le...@oracle.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: a.p.zijls...@chello.nl Link: http://lkml.kernel.org/r/20170525130005.5947-7-alexander.le...@verizon.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- tools/lib/lockdep/uinclude/linux/irqflags.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/tools/lib/lockdep/uinclude/linux/irqflags.h b/tools/lib/lockdep/uinclude/linux/irqflags.h index 6cc296f..df77669 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)
