OpenCloudOS-Kernel/drivers/xen/xen-pciback
Konrad Rzeszutek Wilk bdc5c1812c xen/pciback: Don't disable a PCI device that is already disabled.
While shuting down a HVM guest with pci devices passed through we
get this:

pciback 0000:04:00.0: restoring config space at offset 0x4 (was 0x100000, writing 0x100002)
------------[ cut here ]------------
WARNING: at drivers/pci/pci.c:1397 pci_disable_device+0x88/0xa0()
Hardware name: MS-7640
Device pciback
disabling already-disabled device
Modules linked in:
Pid: 53, comm: xenwatch Not tainted 3.9.0-rc1-20130304a+ #1
Call Trace:
 [<ffffffff8106994a>] warn_slowpath_common+0x7a/0xc0
 [<ffffffff81069a31>] warn_slowpath_fmt+0x41/0x50
 [<ffffffff813cf288>] pci_disable_device+0x88/0xa0
 [<ffffffff814554a7>] xen_pcibk_reset_device+0x37/0xd0
 [<ffffffff81454b6f>] ? pcistub_put_pci_dev+0x6f/0x120
 [<ffffffff81454b8d>] pcistub_put_pci_dev+0x8d/0x120
 [<ffffffff814582a9>] __xen_pcibk_release_devices+0x59/0xa0

This fixes the bug.

CC: stable@vger.kernel.org
Reported-and-Tested-by: Sander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-03-06 10:00:25 -05:00
..
Makefile xen/pciback: Have 'passthrough' option instead of XEN_PCIDEV_BACKEND_PASS and XEN_PCIDEV_BACKEND_VPCI 2011-07-19 21:04:20 -04:00
conf_space.c PCI: create common pcibios_err_to_errno 2012-06-12 09:21:42 -06:00
conf_space.h xen/pciback: Drop two backends, squash and cleanup some code. 2011-07-19 20:58:35 -04:00
conf_space_capability.c xen/pciback: Drop two backends, squash and cleanup some code. 2011-07-19 20:58:35 -04:00
conf_space_header.c xen/pciback: miscellaneous adjustments 2011-09-21 18:17:59 -04:00
conf_space_quirks.c xen/pciback: miscellaneous adjustments 2011-09-21 18:17:59 -04:00
conf_space_quirks.h xen/pciback: Drop two backends, squash and cleanup some code. 2011-07-19 20:58:35 -04:00
passthrough.c xen/pciback: miscellaneous adjustments 2011-09-21 18:17:59 -04:00
pci_stub.c Drivers: xen: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
pciback.h x86/xen : Fix the wrong check in pciback 2013-01-15 15:56:48 -05:00
pciback_ops.c xen/pciback: Don't disable a PCI device that is already disabled. 2013-03-06 10:00:25 -05:00
vpci.c xen PV passthru: assign SR-IOV virtual functions to separate virtual slots 2012-10-19 15:17:47 -04:00
xenbus.c xen/pci[front|back]: Use %d instead of %1x for displaying PCI devfn. 2012-02-03 16:06:57 -05:00