static int fake_lm_set()

in bridges/vme_fake.c [856:897]

• 33 lines of code
• 7 McCabe index (conditional complexity)

static int fake_lm_set(struct vme_lm_resource *lm, unsigned long long lm_base,
		u32 aspace, u32 cycle)
{
	int i;
	struct vme_bridge *fake_bridge;
	struct fake_driver *bridge;

	fake_bridge = lm->parent;

	bridge = fake_bridge->driver_priv;

	mutex_lock(&lm->mtx);

	/* If we already have a callback attached, we can't move it! */
	for (i = 0; i < lm->monitors; i++) {
		if (bridge->lm_callback[i]) {
			mutex_unlock(&lm->mtx);
			pr_err("Location monitor callback attached, can't reset\n");
			return -EBUSY;
		}
	}

	switch (aspace) {
	case VME_A16:
	case VME_A24:
	case VME_A32:
	case VME_A64:
		break;
	default:
		mutex_unlock(&lm->mtx);
		pr_err("Invalid address space\n");
		return -EINVAL;
	}

	bridge->lm_base = lm_base;
	bridge->lm_aspace = aspace;
	bridge->lm_cycle = cycle;

	mutex_unlock(&lm->mtx);

	return 0;
}