---
title: IOSimpleLockLockDisableInterrupt
framework: kernel
role: symbol
role_heading: Function
path: kernel/1553005-iosimplelocklockdisableinterrupt
---

# IOSimpleLockLockDisableInterrupt

Lock a spin lock.

## Declaration

```occ
IOInterruptState IOSimpleLockLockDisableInterrupt(IOSimpleLock *lock);
```

## Parameters

- `lock`: Pointer to the lock.

## Discussion

Discussion Lock the spin lock. If the lock is held, spin waiting for its unlock. Simple locks disable preemption, cannot be held across any blocking operation, and should be held for very short periods. When used to synchronize between interrupt context and thread context they should be locked with interrupts disabled - IOSimpleLockLockDisableInterrupt() will do both. Locking the lock recursively from one thread will result in deadlock.

## See Also

### Simple Locks

- [IOSimpleLockAlloc](kernel/1553017-iosimplelockalloc.md)
- [IOSimpleLockInit](kernel/1552990-iosimplelockinit.md)
- [IOSimpleLockDestroy](kernel/3380136-iosimplelockdestroy.md)
- [IOSimpleLockFree](kernel/1553035-iosimplelockfree.md)
- [IOSimpleLockGetMachLock](kernel/1553019-iosimplelockgetmachlock.md)
- [IOSimpleLockLock](kernel/1552997-iosimplelocklock.md)
- [IOSimpleLockTryLock](kernel/1553029-iosimplelocktrylock.md)
- [IOSimpleLockUnlock](kernel/1553015-iosimplelockunlock.md)
- [IOSimpleLockUnlockEnableInterrupt](kernel/1552998-iosimplelockunlockenableinterrup.md)