Commit 9e9b2893 authored by Jason Wang's avatar Jason Wang Committed by Michael S. Tsirkin
Browse files

virtio-mmio: implement synchronize_cbs() 



Simply synchronize the platform irq that is used by us.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Halil Pasic <pasic@linux.ibm.com>
Cc: Cornelia Huck <cohuck@redhat.com>
Cc: Vineeth Vijayan <vneethv@linux.ibm.com>
Cc: Peter Oberparleiter <oberpar@linux.ibm.com>
Cc: linux-s390@vger.kernel.org
Reviewed-by: default avatarCornelia Huck <cohuck@redhat.com>
Signed-off-by: default avatarJason Wang <jasowang@redhat.com>
Message-Id: <20220527060120.20964-6-jasowang@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Reviewed-by: default avatarXuan Zhuo <xuanzhuo@linux.alibaba.com>
parent 48b3dd24

drivers/virtio/virtio_mmio.c

+8 −0
Original line number Diff line number Diff line
@@ -345,6 +345,13 @@ static void vm_del_vqs(struct virtio_device *vdev) 
	free_irq(platform_get_irq(vm_dev->pdev, 0), vm_dev);

}



static void vm_synchronize_cbs(struct virtio_device *vdev)

{

	struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev);



	synchronize_irq(platform_get_irq(vm_dev->pdev, 0));

}



static struct virtqueue *vm_setup_vq(struct virtio_device *vdev, unsigned int index,

				  void (*callback)(struct virtqueue *vq),

				  const char *name, bool ctx)
@@ -541,6 +548,7 @@ static const struct virtio_config_ops virtio_mmio_config_ops = { 
	.finalize_features = vm_finalize_features,

	.bus_name	= vm_bus_name,

	.get_shm_region = vm_get_shm_region,

	.synchronize_cbs = vm_synchronize_cbs,

};