From 548af6102c8e2ea86f923c2f90c3779c602b153b Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 8 Apr 2024 09:46:01 +0200 Subject: [PATCH] irqflags: Explicitly ignore lockdep_hrtimer_exit() argument commit c1d11fc2c8320871b40730991071dd0a0b405bc8 upstream. When building with 'make W=1' but CONFIG_TRACE_IRQFLAGS=n, the unused argument to lockdep_hrtimer_exit() causes a warning: kernel/time/hrtimer.c:1655:14: error: variable 'expires_in_hardirq' set but not used [-Werror=unused-but-set-variable] This is intentional behavior, so add a cast to void to shut up the warning. Fixes: 73d20564e0dc ("hrtimer: Don't dereference the hrtimer pointer after the callback") Reported-by: kernel test robot Signed-off-by: Arnd Bergmann Signed-off-by: Thomas Gleixner Reviewed-by: Sebastian Andrzej Siewior Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20240408074609.3170807-1-arnd@kernel.org Closes: https://lore.kernel.org/oe-kbuild-all/202311191229.55QXHVc6-lkp@intel.com/ Signed-off-by: Greg Kroah-Hartman --- include/linux/irqflags.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/irqflags.h b/include/linux/irqflags.h index 2b665c32f5fe..2e09c269bf9d 100644 --- a/include/linux/irqflags.h +++ b/include/linux/irqflags.h @@ -126,7 +126,7 @@ do { \ # define lockdep_softirq_enter() do { } while (0) # define lockdep_softirq_exit() do { } while (0) # define lockdep_hrtimer_enter(__hrtimer) false -# define lockdep_hrtimer_exit(__context) do { } while (0) +# define lockdep_hrtimer_exit(__context) do { (void)(__context); } while (0) # define lockdep_posixtimer_enter() do { } while (0) # define lockdep_posixtimer_exit() do { } while (0) # define lockdep_irq_work_enter(__work) do { } while (0)