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>

diff --git a/arch/um/drivers/virtio_uml.c b/arch/um/drivers/virtio_uml.c
index 65df43fa9be58d9ce33caedf2e5c6a1e11f721fd..ad8d78fb1d9aafd135fc47bb9920f3bc77b6b29f 100644 (file)
--- a/arch/um/drivers/virtio_uml.c
+++ b/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)