[PATCH V2 2/3] virtio: export virtio_config_{enable|disable}()

Jason Wang
2024-06-24T02:45:56Z

This patch exports virtio_config_enable() and virtio_config_disable()
for drivers to disable config callbacks.

Signed-off-by: Jason Wang <jasowang@redhat.com>
---
drivers/virtio/virtio.c | 6 ++++--
include/linux/virtio.h | 3 +++
2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c
index d3aa74b8ae5d..a4622a62aac3 100644
--- a/drivers/virtio/virtio.c
+++ b/drivers/virtio/virtio.c
@@ -143,14 +143,15 @@ void virtio_config_changed(struct virtio_device *dev)
}
EXPORT_SYMBOL_GPL(virtio_config_changed);

-static void virtio_config_disable(struct virtio_device *dev)
+void virtio_config_disable(struct virtio_device *dev)
{
spin_lock_irq(&dev->config_lock);
--dev->config_enabled;
spin_unlock_irq(&dev->config_lock);
}
+EXPORT_SYMBOL_GPL(virtio_config_disable);

-static void virtio_config_enable(struct virtio_device *dev)
+void virtio_config_enable(struct virtio_device *dev)
{
spin_lock_irq(&dev->config_lock);

@@ -165,6 +166,7 @@ static void virtio_config_enable(struct virtio_device *dev)

spin_unlock_irq(&dev->config_lock);
}
+EXPORT_SYMBOL_GPL(virtio_config_enable);

void virtio_add_status(struct virtio_device *dev, unsigned int status)
{
diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index 4496f9ba5d82..bc5e408582c9 100644
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -163,6 +163,9 @@ void __virtqueue_break(struct virtqueue *_vq);
void __virtqueue_unbreak(struct virtqueue *_vq);

void virtio_config_changed(struct virtio_device *dev);
+
+void virtio_config_disable(struct virtio_device *dev);
+void virtio_config_enable(struct virtio_device *dev);
#ifdef CONFIG_PM_SLEEP
int virtio_device_freeze(struct virtio_device *dev);
int virtio_device_restore(struct virtio_device *dev);
--
2.31.1