This was removed from the other architectures in commit 952111d7db02 ("arch: Remove spin_unlock_wait() arch-specific definitions"). I don't want to rebase this into our outstanding patches because they've already been reviewed, so I'm going to treat this as a separate patch.
Signed-off-by: Palmer Dabbelt <pal...@dabbelt.com> --- arch/riscv/include/asm/spinlock.h | 9 --------- 1 file changed, 9 deletions(-) diff --git a/arch/riscv/include/asm/spinlock.h b/arch/riscv/include/asm/spinlock.h index b3b394ffaf7e..7e06eee8f256 100644 --- a/arch/riscv/include/asm/spinlock.h +++ b/arch/riscv/include/asm/spinlock.h @@ -59,15 +59,6 @@ static inline void arch_spin_lock(arch_spinlock_t *lock) } } -static inline void arch_spin_unlock_wait(arch_spinlock_t *lock) -{ - smp_rmb(); - do { - cpu_relax(); - } while (arch_spin_is_locked(lock)); - smp_acquire__after_ctrl_dep(); -} - /***********************************************************/ static inline int arch_read_can_lock(arch_rwlock_t *lock) -- 2.13.6