um: virtio_uml: use raw spinlock

This is needed because at least in time-travel the code
can be called directly from the deep architecture and
IRQ handling code.

Link: https://patch.msgid.link/20250110125550.32479-7-johannes@sipsolutions.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Richard Weinberger <richard@nod.at>

Author: jmberg-intel

arch/um/drivers/virtio_uml.c

@@ -52,7 +52,7 @@ struct virtio_uml_device {
 	struct platform_device *pdev;
 	struct virtio_uml_platform_data *pdata;
 
-	spinlock_t sock_lock;
+	raw_spinlock_t sock_lock;
 	int sock, req_fd, irq;
 	u64 features;
 	u64 protocol_features;
@@ -246,7 +246,7 @@ static int vhost_user_send(struct virtio_uml_device *vu_dev,
 	if (request_ack)
 		msg->header.flags |= VHOST_USER_FLAG_NEED_REPLY;
 
-	spin_lock_irqsave(&vu_dev->sock_lock, flags);
+	raw_spin_lock_irqsave(&vu_dev->sock_lock, flags);
 	rc = full_sendmsg_fds(vu_dev->sock, msg, size, fds, num_fds);
 	if (rc < 0)
 		goto out;
@@ -266,7 +266,7 @@ static int vhost_user_send(struct virtio_uml_device *vu_dev,
 	}
 
 out:
-	spin_unlock_irqrestore(&vu_dev->sock_lock, flags);
+	raw_spin_unlock_irqrestore(&vu_dev->sock_lock, flags);
 	return rc;
 }
 
@@ -1239,7 +1239,7 @@ static int virtio_uml_probe(struct platform_device *pdev)
 		goto error_free;
 	vu_dev->sock = rc;
 
-	spin_lock_init(&vu_dev->sock_lock);
+	raw_spin_lock_init(&vu_dev->sock_lock);
 
 	rc = vhost_user_init(vu_dev);
 	if (rc)