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Konrad Rzeszutek Wilk 80ba77dfbc xen/pciback: Fix proper FLR steps. 
When we do FLR and save PCI config we did it in the wrong order.
The end result was that if a PCI device was unbind from
its driver, then binded to xen-pciback, and then back to its
driver we would get:

> lspci -s 04:00.0
04:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
13:42:12 # 4 :~/
> echo "0000:04:00.0" > /sys/bus/pci/drivers/pciback/unbind
> modprobe e1000e
e1000e: Intel(R) PRO/1000 Network Driver - 2.0.0-k
e1000e: Copyright(c) 1999 - 2012 Intel Corporation.
e1000e 0000:04:00.0: Disabling ASPM L0s L1
e1000e 0000:04:00.0: enabling device (0000 -> 0002)
xen: registering gsi 48 triggering 0 polarity 1
Already setup the GSI :48
e1000e 0000:04:00.0: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
e1000e: probe of 0000:04:00.0 failed with error -2

This fixes it by first saving the PCI configuration space, then
doing the FLR.

Reported-by: Ren, Yongjie <yongjie.ren@intel.com>
Reported-and-Tested-by: Tobias Geiger <tobias.geiger@vido.info>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
CC: stable@vger.kernel.org
 		2012-09-06 09:22:02 -04:00
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accessibility
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acpi Merge branch 'master' [vanilla Linus master] into libata-dev.git/upstream 2012-07-25 15:58:48 -04:00
amba
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ata [libata] pata_cmd64x: whitespace cleanup 2012-07-25 16:07:40 -04:00
atm
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auxdisplay
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base Driver core merge for 3.6-rc1 2012-07-26 11:25:33 -07:00
bcma bcma: fix invalid PMU chip control masks 2012-07-26 12:46:54 -07:00
block Power management updates for 3.6 2012-07-22 13:36:52 -07:00
bluetooth
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cdrom
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char Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2012-07-26 13:00:59 -07:00
clk The common clk framework changes for 3.6 include a small number of core 2012-07-24 16:40:57 -07:00
clocksource arm-soc: new SoC support 2012-07-23 16:31:31 -07:00
connector
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cpufreq Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-07-24 13:34:56 -07:00
cpuidle
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crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2012-07-26 13:00:59 -07:00
dca
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devfreq
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dio
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dma Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2012-07-24 17:12:54 -07:00
edac
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eisa
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extcon
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firewire
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firmware
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gpio arm-soc: sparse IRQ conversion 2012-07-23 17:36:02 -07:00
gpu
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hid Merge branch 'next' into for-linus 2012-07-24 22:43:04 -07:00
hsi
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hv Drivers: hv: Change the hex constant to a decimal constant 2012-07-19 15:27:33 -07:00
hwmon Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-07-24 13:34:56 -07:00
hwspinlock
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i2c i2c-omap: Add support for I2C_M_STOP message flag 2012-07-24 14:13:59 +02:00
ide
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idle
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ieee802154
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iio
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infiniband InfiniBand/RDMA changes for the 3.6 merge window: 2012-07-24 13:56:26 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2012-07-26 12:59:53 -07:00
iommu IOMMU Updates for Linux v3.6-rc1 2012-07-24 16:24:11 -07:00
isdn
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leds
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lguest
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macintosh
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md Three fixes for device-mapper discard processing: 2012-07-20 11:51:22 -07:00
media Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-07-24 13:34:56 -07:00
memory
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memstick
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message
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mfd
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misc CHAR/MISC patches for 3.6-rc1 2012-07-26 12:15:41 -07:00
mmc Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2012-07-24 17:12:54 -07:00
mtd Change the default amount of eraseblocks which UBI reserves for bad block 2012-07-23 15:53:06 -07:00
net PCI changes for the 3.6 merge window: 2012-07-24 16:17:07 -07:00
nfc
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nubus
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of Devicetree updates for 3.6 2012-07-24 14:07:22 -07:00
oprofile
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parisc PCI changes for the 3.6 merge window: 2012-07-24 16:17:07 -07:00
parport
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pci PCI changes for the 3.6 merge window: 2012-07-24 16:17:07 -07:00
pcmcia
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pinctrl Pin control changes for v3.6: 2012-07-24 14:05:46 -07:00
platform Power management updates for 3.6 2012-07-22 13:36:52 -07:00
pnp
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power Driver core merge for 3.6-rc1 2012-07-26 11:25:33 -07:00
pps
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ps3
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ptp
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rapidio
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regulator SCSI misc on 20120724 2012-07-24 18:11:22 -07:00
remoteproc
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rpmsg
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rtc arm-soc: device tree description updates 2012-07-23 16:17:43 -07:00
s390 KVM updates for the 3.6 merge window 2012-07-24 12:01:20 -07:00
sbus
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scsi Merge branch 'master' [vanilla Linus master] into libata-dev.git/upstream 2012-07-25 15:58:48 -04:00
sfi
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sh Merge branch 'common/pinctrl' into sh-latest 2012-07-20 16:42:59 +09:00
sn
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spi spi: Updates for 3.6 2012-07-26 12:57:41 -07:00
ssb
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staging Staging tree patches for 3.6-rc1 2012-07-26 11:14:49 -07:00
target iscsi-target: Drop bogus struct file usage for iSCSI/SCTP 2012-07-21 02:44:13 -07:00
tc
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thermal
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tty Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2012-07-24 17:12:54 -07:00
uio
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usb USB patches for 3.6-rc1 2012-07-26 10:23:47 -07:00
uwb
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vhost vhost: make vhost work queue visible 2012-07-22 01:22:23 +03:00
video Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-07-24 13:34:56 -07:00
virt
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virtio [SCSI] virtio-scsi: Add vdrv->scan for post VIRTIO_CONFIG_S_DRIVER_OK LUN scanning 2012-07-20 08:59:03 +01:00
vlynq
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vme VME: Prevent D16 cycles being split into 8-bit blocks 2012-07-19 15:39:39 -07:00
w1 Driver core merge for 3.6-rc1 2012-07-26 11:25:33 -07:00
watchdog Merge git://www.linux-watchdog.org/linux-watchdog 2012-07-24 13:26:08 -07:00
xen xen/pciback: Fix proper FLR steps. 2012-09-06 09:22:02 -04:00
zorro
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Kconfig
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Makefile
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