spin_trylock_irq
if (spin_trylock_irq(&pprt_lock)) {
if (!spin_trylock_irq(&amiflop_lock))
if (!spin_trylock_irq(&swd->lock))
if (spin_trylock_irq(&pool->lock)) {
ret = spin_trylock_irq(&hwlock->lock);
if (!spin_trylock_irq(lock))
spin_trylock_irq(_T->lock))
contended = !spin_trylock_irq(lock);
if (spin_trylock_irq(&d->lock)) {