}
/* The condition that must be true for polling to end */
-static bool wait_is_over(struct port *port)
+static bool will_read_block(struct port *port)
{
- return port_has_data(port) || !port->host_connected;
+ return !port_has_data(port) && port->host_connected;
}
static ssize_t port_fops_read(struct file *filp, char __user *ubuf,
return -EAGAIN;
ret = wait_event_interruptible(port->waitqueue,
- wait_is_over(port));
+ !will_read_block(port));
if (ret < 0)
return ret;
}