The spinlock stubs don't actually do anything with the spinlock_t. To avoid the compiler warning about it add an __always_unused annotation to the spinlock. Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx> --- include/linux/spinlock.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h index a604e0fd090f..6f90fb1cad43 100644 --- a/include/linux/spinlock.h +++ b/include/linux/spinlock.h @@ -12,6 +12,6 @@ typedef int spinlock_t; #define spin_lock_irqsave(lock, flags) do { flags = 0; } while (0) #define spin_unlock_irqrestore(lock, flags) do { flags = flags; } while (0) -#define DEFINE_SPINLOCK(lock) spinlock_t lock +#define DEFINE_SPINLOCK(lock) spinlock_t __always_unused lock #endif /* __LINUX_SPINLOCK_H */ -- 2.39.2