[PATCH v4] Fixes for PCI backend for 3.19

[Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>]

Hey,

The last time I posted these patches: https://lkml.org/lkml/2014/7/8/533
was so long ago that I don't even remember most comments. The only
one that stuck in mind was David's recommendation to add a new PCI API
call and use that. See patch #6 and #7.

The original posting (v3) had an extra patch that would do slot and
bus reset using do_flr SysFS attribute. I will revisit that once I am
done with this patchset.

I also seem to have had in my a bunch of 'SoB' from David - which
makes no sense - unless I pulled from his tree. Anyhow wherewere
I saw them I removed them.

Please take a look and comment. If I missed some comment from months
ago hopefully the new version has clarified them.


 drivers/pci/pci.c                     |  5 +--
 drivers/xen/xen-pciback/passthrough.c | 14 ++++++--
 drivers/xen/xen-pciback/pci_stub.c    | 60 ++++++++++++++++++++++-------------
 drivers/xen/xen-pciback/pciback.h     |  7 ++--
 drivers/xen/xen-pciback/vpci.c        | 14 ++++++--
 drivers/xen/xen-pciback/xenbus.c      |  4 +--
 include/linux/device.h                |  5 +++
 include/linux/pci.h                   |  2 ++
 8 files changed, 76 insertions(+), 35 deletions(-)

Konrad Rzeszutek Wilk (7):
      xen/pciback: Don't deadlock when unbinding.
      driver core: Provide an wrapper around the mutex to do lockdep warnings
      xen/pciback: Include the domain id if removing the device whilst still in use
      xen/pciback: Print out the domain owning the device.
      xen/pciback: Remove tons of dereferences
      PCI: Expose pci_load_saved_state for public consumption.
      xen/pciback: Restore configuration space when detaching from a guest.