static int wait_for_pin()

in char/bbc_i2c.c [123:148]

• 23 lines of code
• 3 McCabe index (conditional complexity)

static int wait_for_pin(struct bbc_i2c_bus *bp, u8 *status)
{
	DECLARE_WAITQUEUE(wait, current);
	int limit = 32;
	int ret = 1;

	bp->waiting = 1;
	add_wait_queue(&bp->wq, &wait);
	while (limit-- > 0) {
		long val;

		val = wait_event_interruptible_timeout(
				bp->wq,
				(((*status = readb(bp->i2c_control_regs + 0))
				  & I2C_PCF_PIN) == 0),
				msecs_to_jiffies(250));
		if (val > 0) {
			ret = 0;
			break;
		}
	}
	remove_wait_queue(&bp->wq, &wait);
	bp->waiting = 0;

	return ret;
}