linux/drivers/vfio
Alex Williamson 9a92c5091a vfio-pci: Enable device before attempting reset
Devices making use of PM reset are getting incorrectly identified as
not supporting reset because pci_pm_reset() fails unless the device is
in D0 power state.  When first attached to vfio_pci devices are
typically in an unknown power state.  We can fix this by explicitly
setting the power state or simply calling pci_enable_device() before
attempting a pci_reset_function().  We need to enable the device
anyway, so move this up in our vfio_pci_enable() function, which also
simplifies the error path a bit.

Note that pci_disable_device() does not explicitly set the power
state, so there's no need to re-order vfio_pci_disable().

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2012-12-07 13:43:51 -07:00
..
pci vfio-pci: Enable device before attempting reset 2012-12-07 13:43:51 -07:00
Kconfig vfio: Add PCI device driver 2012-07-31 08:16:24 -06:00
Makefile vfio: Type1 IOMMU implementation 2012-07-31 08:16:23 -06:00
vfio.c VFIO: use ACCESS_ONCE() to guard access to dev->driver 2012-12-07 13:43:50 -07:00
vfio_iommu_type1.c vfio: Type1 IOMMU implementation 2012-07-31 08:16:23 -06:00