ar/virtio_console.c
index 088182e54debd6029ea2c2a5542d7a28500e67b8..e6048e04c3b23d008caa2a1d31d4ac6b2841045f 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -971,10 +971,17 @@ static __poll_t port_fops_poll(struct file *filp, poll_table *wait)
 		return EPOLLHUP;
 	}
 	ret = 0;
-	if (!will_read_block(port))
+
+	spin_lock_irq(&port->inbuf_lock);
+	if (port->inbuf)
 		ret |= EPOLLIN | EPOLLRDNORM;
-	if (!will_write_block(port))
+	spin_unlock_irq(&port->inbuf_lock);
+
+	spin_lock_irq(&port->outvq_lock);
+	if (!port->outvq_full)
 		ret |= EPOLLOUT;
+	spin_unlock_irq(&port->outvq_lock);
+
 	if (!port->host_connected)
 		ret |= EPOLLHUP;
 
@@ -1705,6 +1712,10 @@ static void out_intr(struct virtqueue *vq)
 		return;
 	}
 
+	spin_lock(&port->outvq_lock);
+	reclaim_consumed_buffers(port);
+	spin_unlock(&port->outvq_lock);
+
 	wake_up_interruptible(&port->waitqueue);
 }
 

---
base-commit: d358e5254674b70f34c847715ca509e46eb81e6f
change-id: 20251215-virtio-console-lost-wakeup-0f566c5cd35f

Best regards,
-- 
Lorenz Bauer <lmb@isovalent.com>[PATCH v3] virtio: console: fix lost wakeup when device is written and polledLorenz Bauer <lmb@isovalent.com> undefinedAmit Shah <amit@kernel.org>, Arnd Bergmann <arnd@arndb.de>, Greg Kroah-Hartman <gregkh@linuxfoundation.org> undefined undefined undefined undefined undefined undefined“c„Ú7