From 61d792562b53c610f9fe917f2bbc22218aa39c22 Mon Sep 17 00:00:00 2001 From: Alex Williamson <alex.williamson@redhat.com> Date: Thu, 7 Aug 2014 11:12:04 -0600 Subject: vfio-pci: Use mutex around open, release, and remove Serializing open/release allows us to fix a refcnt error if we fail to enable the device and lets us prevent devices from being unbound or opened, giving us an opportunity to do bus resets on release. No restriction added to serialize binding devices to vfio-pci while the mutex is held though. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> --- drivers/vfio/pci/vfio_pci_private.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/vfio/pci/vfio_pci_private.h') diff --git a/drivers/vfio/pci/vfio_pci_private.h b/drivers/vfio/pci/vfio_pci_private.h index 9c6d5d0f3b02..31e7a30196ab 100644 --- a/drivers/vfio/pci/vfio_pci_private.h +++ b/drivers/vfio/pci/vfio_pci_private.h @@ -55,7 +55,7 @@ struct vfio_pci_device { bool bardirty; bool has_vga; struct pci_saved_state *pci_saved_state; - atomic_t refcnt; + int refcnt; struct eventfd_ctx *err_trigger; }; -- cgit v1.2.3