static int sprd_hwspinlock_trylock()

in sprd_hwspinlock.c [40:57]

• 15 lines of code
• 2 McCabe index (conditional complexity)

static int sprd_hwspinlock_trylock(struct hwspinlock *lock)
{
	struct sprd_hwspinlock_dev *sprd_hwlock =
		dev_get_drvdata(lock->bank->dev);
	void __iomem *addr = lock->priv;
	int user_id, lock_id;

	if (!readl(addr))
		return 1;

	lock_id = hwlock_to_id(lock);
	/* get the hardware spinlock master/user id */
	user_id = readl(sprd_hwlock->base + HWSPINLOCK_MASTERID(lock_id));
	dev_warn(sprd_hwlock->bank.dev,
		 "hwspinlock [%d] lock failed and master/user id = %d!\n",
		 lock_id, user_id);
	return 0;
}