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Bjorn Helgaas 7a0b33d4a4 Revert "PCI: Don't scan random busses in pci_scan_bridge()" 
This reverts commit fc1b253141 ("PCI: Don't scan random busses in
pci_scan_bridge()") because it breaks CardBus on some machines.

David tested a Dell Latitude D505 that worked like this prior to
fc1b253141b3:

    pci 0000:00:1e.0: PCI bridge to [bus 01]
    pci 0000:01:01.0: CardBus bridge to [bus 02-05]

Note that the 01:01.0 CardBus bridge has a bus number aperture of
[bus 02-05], but those buses are all outside the 00:1e.0 PCI bridge bus
number aperture, so accesses to buses 02-05 never reach CardBus.  This is
later patched up by yenta_fixup_parent_bridge(), which changes the
subordinate bus number of the 00:1e.0 PCI bridge:

    pci_bus 0000:01: Raising subordinate bus# of parent bus (#01) from #01 to #05

With fc1b253141, pci_scan_bridge() fails immediately when it notices that
we can't allocate a valid secondary bus number for the CardBus bridge, and
CardBus doesn't work at all:

    pci 0000:01:01.0: can't allocate child bus 01 from [bus 01]

I'd prefer to fix this by integrating the yenta_fixup_parent_bridge() logic
into pci_scan_bridge() so we fix the bus number apertures up front.  But
I don't think we can do that before v3.17, so I'm going to revert this to
avoid the problem while we're working on the long-term fix.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=83441
Link: http://lkml.kernel.org/r/1409303414-5196-1-git-send-email-david.henningsson@canonical.com
Reported-by: David Henningsson <david.henningsson@canonical.com>
Tested-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org	# v3.15+
 		2014-09-19 10:56:06 -06:00
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accessibility
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acpi ACPIPHP / radeon / nouveau: Remove acpi_bus_no_hotplug() 2014-09-15 13:15:34 -06:00
amba
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ata libata: widen Crucial M550 blacklist matching 2014-08-18 17:40:09 -04:00
atm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-08-13 18:27:40 -06:00
auxdisplay
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base Merge branch 'akpm' (patchbomb from Andrew Morton) 2014-08-06 21:14:42 -07:00
bcma bcma: use NS prefix for names of Northstar specific cores 2014-07-31 13:45:32 -04:00
block PCI changes for the v3.17 merge window (part 2): 2014-08-14 18:10:33 -06:00
bluetooth Bluetooth: Fix crash in the Marvell driver initialization codepath 2014-07-31 01:07:28 +02:00
bus bus: arm-ccn: Fix warning message 2014-08-24 11:28:30 -07:00
cdrom
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char virtio: rng: add derating factor for use by hwrng core 2014-08-15 10:26:01 +05:30
clk ARM: SoC platform changes for 3.17 2014-08-08 11:14:29 -07:00
clocksource ARM: SoC platform changes for 3.17 2014-08-08 11:14:29 -07:00
connector
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cpufreq More ACPI and power management updates for 3.17-rc1 2014-08-14 18:13:46 -06:00
cpuidle More ACPI and power management updates for 3.17-rc1 2014-08-14 18:13:46 -06:00
crypto PCI changes for the v3.17 merge window (part 2): 2014-08-14 18:10:33 -06:00
dca
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devfreq
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dio
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dma Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2014-08-11 07:14:01 -07:00
dma-buf
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edac Merge branch 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac 2014-08-15 17:56:45 -06:00
eisa
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extcon
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firewire Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-08-06 09:38:14 -07:00
firmware firmware: Do not use WARN_ON(!spin_is_locked()) 2014-08-22 08:45:40 +01:00
fmc
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gpio gpio-lynxpoint: enable input sensing in resume 2014-08-21 07:44:57 -05:00
gpu Merge branch 'pci/vga'; commit '6a73336bde29' into for-linus 2014-09-18 23:05:06 -06:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2014-08-21 14:25:20 -07:00
hsi HSI changes for the v3.17 series 2014-08-06 20:06:14 -07:00
hv Char / Misc driver patches for 3.17-rc1 2014-08-04 17:32:24 -07:00
hwmon Several bug fixes in various drivers, plus a minor cleanup 2014-08-14 09:55:13 -06:00
hwspinlock hwspinlock: enable OMAP build for AM33xx, AM43xx & DRA7xx 2014-07-29 11:46:28 +03:00
i2c i2c: i801: Add PCI ID for Intel Braswell 2014-08-19 10:19:47 -05:00
ide ide: use module_platform_driver() 2014-08-05 21:16:46 -07:00
idle intel_idle: Broadwell support 2014-08-15 17:06:40 -04:00
iio Staging driver patches for 3.17-rc1 2014-08-04 18:36:12 -07:00
infiniband PCI changes for the v3.17 merge window (part 2): 2014-08-14 18:10:33 -06:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2014-08-15 18:16:28 -06:00
iommu iommu/core: Check for the right function pointer in iommu_map() 2014-08-19 00:19:26 +02:00
ipack
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irqchip ARM: SoC platform changes for 3.17 2014-08-08 11:14:29 -07:00
isdn drivers: isdn: eicon: xdi_msg.h: Fix typo in #ifndef 2014-08-22 11:31:30 -07:00
leds ARM: SoC driver changes for 3.17 2014-08-08 11:34:32 -07:00
lguest mm/vmalloc.c: clean up map_vm_area third argument 2014-08-06 18:01:19 -07:00
macintosh == Changes to existing drivers == 2014-08-07 17:23:16 -07:00
mailbox mailbox/omap: add a parent structure for every IP instance 2014-07-29 01:57:25 -07:00
mcb
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md md/raid10: always initialise ->state on newly allocated r10_bio 2014-08-19 17:20:27 +10:00
media media: use pci_zalloc_consistent 2014-08-08 15:57:28 -07:00
memory memory: Freescale CoreNet Coherency Fabric error reporting driver 2014-07-29 19:26:30 -05:00
memstick
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message
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mfd drivers/mfd/rtsx_usb.c: export device table 2014-08-14 10:56:15 -06:00
misc ARM: SoC driver changes for 3.17 2014-08-08 11:34:32 -07:00
mmc PCI changes for the v3.17 merge window (part 2): 2014-08-14 18:10:33 -06:00
mtd No significant changes, mostly small fixes here and there. The more important 2014-08-13 17:42:11 -06:00
net net: ethernet: broadcom: bnx2x: Remove redundant #ifdef 2014-08-22 11:29:58 -07:00
nfc
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ntb
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nubus
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of of/irq: Fix lookup to use 'interrupts-extended' property first 2014-08-16 09:03:58 +01:00
oprofile
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parisc
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parport drivers/parport/parport_ip32.c: use PTR_ERR_OR_ZERO 2014-08-08 15:57:25 -07:00
pci Revert "PCI: Don't scan random busses in pci_scan_bridge()" 2014-09-19 10:56:06 -06:00
pcmcia Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2014-08-07 08:50:34 -07:00
phy ARM: SoC driver changes for 3.17 2014-08-08 11:34:32 -07:00
pinctrl ARM: SoC driver changes for 3.17 2014-08-08 11:34:32 -07:00
platform Revert "platform/x86/toshiba-apci.c possible bad if test?" 2014-08-20 08:18:18 -07:00
pnp ACPI / PNP: Fix acpi_pnp_match() 2014-07-30 00:23:09 +02:00
power ARM: SoC platform changes for 3.17 2014-08-08 11:14:29 -07:00
powercap
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pps
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ps3
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ptp PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
pwm pwm: Fix period and polarity in pwm_get() for non-perfect matches 2014-08-18 10:58:43 +02:00
rapidio PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
ras
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regulator == Changes to existing drivers == 2014-08-07 17:17:39 -07:00
remoteproc
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reset
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rpmsg
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rtc Merge branch 'akpm' (second patchbomb from Andrew Morton) 2014-08-08 15:57:47 -07:00
s390 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2014-08-07 08:41:00 -07:00
sbus Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc 2014-08-05 18:57:18 -07:00
scsi SCSI fixes on 20140819 2014-08-20 18:20:50 -05:00
sfi
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sh sh: intc: Confine SH_INTC to platforms that need it 2014-08-22 12:28:16 +09:00
sn
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soc
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spi ARM: SoC cleanups for 3.17 2014-08-08 11:00:26 -07:00
spmi
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ssb
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staging Merge branch 'akpm' (second patchbomb from Andrew Morton) 2014-08-08 15:57:47 -07:00
target SCSI misc on 20140806 2014-08-06 20:10:32 -07:00
tc
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thermal
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thunderbolt
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tty The branch contains the following device tree changes the v3.17 merge 2014-08-14 09:53:39 -06:00
uio
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usb Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2014-08-06 21:03:53 -07:00
uwb uwb/whci: use correct structure type name in sizeof 2014-08-01 15:48:08 -07:00
vfio drivers/vfio: Enable VFIO if EEH is not supported 2014-08-08 10:39:16 -06:00
vhost
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video PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
virt
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virtio
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vlynq
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vme vme: bridges: use pci_zalloc_consistent 2014-08-08 15:57:30 -07:00
w1
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watchdog Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-08-07 08:47:00 -07:00
xen PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
zorro
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Kconfig Char / Misc driver patches for 3.17-rc1 2014-08-04 17:32:24 -07:00
Makefile Driver core patches for 3.17-rc1 2014-08-04 18:34:04 -07:00