MFC r287563:

  isci: explicitly enable/disable PCI busmaster

  BIOS always enables PCI busmaster on the isci device, which effectively
  worked around this omission.  But when passing the isci device through
  to a guest VM, the hypervisor will disable busmaster and isci will not
  work without calling pci_enable_busmaster().

Sponsored by:	Intel

1 files changed, 2 insertions, 0 deletions

diff --git a/sys/dev/isci/isci.c b/sys/dev/isci/isci.c
index 2f0727d..5a1066c 100644
--- a/sys/dev/isci/isci.c
+++ b/sys/dev/isci/isci.c
@@ -163,6 +163,7 @@ isci_attach(device_t device)
 
 	g_isci = isci;
 	isci->device = device;
+	pci_enable_busmaster(device);
 
 	isci_allocate_pci_memory(isci);
 
@@ -272,6 +273,7 @@ isci_detach(device_t device)
 
 		pci_release_msi(device);
 	}
+	pci_disable_busmaster(device);
 
 	return (0);
 }