Yijing Wang
b97ea289cf
PCI: Assign resources before drivers claim devices (pci_scan_root_bus()) ...
Previously, pci_scan_root_bus() created a root PCI bus, enumerated the
devices on it, and called pci_bus_add_devices(), which made the devices
available for drivers to claim them.
Most callers assigned resources to devices after pci_scan_root_bus()
returns, which may be after drivers have claimed the devices. This is
incorrect; the PCI core should not change device resources while a driver
is managing the device.
Remove pci_bus_add_devices() from pci_scan_root_bus() and do it after any
resource assignment in the callers.
Note that ARM's pci_common_init_dev() already called pci_bus_add_devices()
after pci_scan_root_bus(), so we only need to remove the first call:
pci_common_init_dev
pcibios_init_hw
pci_scan_root_bus
pci_bus_add_devices # first call
pci_bus_assign_resources
pci_bus_add_devices # second call
[bhelgaas: changelog, drop "root_bus" var in alpha common_init_pci(),
return failure earlier in mn10300, add "return" in x86 pcibios_scan_root(),
return early if xtensa platform_pcibios_fixup() fails]
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Richard Henderson <rth@twiddle.net>
CC: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
CC: Matt Turner <mattst88@gmail.com>
CC: David Howells <dhowells@redhat.com>
CC: Tony Luck <tony.luck@intel.com>
CC: Michal Simek <monstr@monstr.eu>
CC: Ralf Baechle <ralf@linux-mips.org>
CC: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
CC: Sebastian Ott <sebott@linux.vnet.ibm.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: Chris Metcalf <cmetcalf@ezchip.com>
CC: Chris Zankel <chris@zankel.net>
CC: Max Filippov <jcmvbkbc@gmail.com>
CC: Thomas Gleixner <tglx@linutronix.de>
2015-03-19 10:17:13 -05:00
Additional power management and ACPI updates for v3.20-rc1
2015-02-21 13:40:41 -08:00
ARM: 8256/1: driver coamba: add device binding path 'driver_override'
2015-02-10 10:23:15 +00:00
Merge branch 'for-3.20/drivers' of git://git.kernel.dk/linux-block
2015-02-12 14:30:53 -08:00
driver core patches for 3.20-rc1
2015-02-15 11:11:47 -08:00
Merge branch 'for-3.20' of git://git.infradead.org/users/kbusch/linux-nvme into for-linus
2015-02-20 22:12:02 -08:00
TTY/Serial driver patches for 3.20-rc1
2015-02-15 11:37:02 -08:00
ARM: SoC platform changes
2015-02-17 09:27:54 -08:00
ipmi: Fix a memory ordering issue
2015-02-19 20:58:42 -06:00
The clock framework changes for 3.20 contain the usual driver additions,
2015-02-21 12:30:30 -08:00
ARM: SoC platform changes
2015-02-17 09:27:54 -08:00
Additional power management and ACPI updates for v3.20-rc1
2015-02-21 13:40:41 -08:00
Merge branches 'pnp', 'pm-cpuidle' and 'pm-cpufreq'
2015-02-21 04:29:16 +01:00
Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma
2015-02-18 08:49:20 -08:00
Merge branches 'pm-cpufreq', 'pm-cpuidle', 'pm-devfreq', 'pm-opp' and 'pm-tools'
2015-02-13 21:39:06 +01:00
Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma
2015-02-18 08:49:20 -08:00
* A fix to sb_edac for proper detection on SNB machines
2015-02-19 11:18:14 -08:00
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2015-02-21 10:41:29 -08:00
Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
2015-02-12 08:51:56 -08:00
Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
2015-02-16 15:48:00 -08:00
Merge branches 'for-3.19/upstream-fixes', 'for-3.20/apple', 'for-3.20/betop', 'for-3.20/lenovo', 'for-3.20/logitech', 'for-3.20/rmi', 'for-3.20/upstream' and 'for-3.20/wacom' into for-linus
2015-02-09 11:17:45 +01:00
Char / Misc patches for 3.20-rc1
2015-02-15 10:48:44 -08:00
Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2015-02-19 10:36:45 -08:00
Merge branch 'i2c/for-3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
2015-02-21 12:41:50 -08:00
intel_idle: Add ->enter_freeze callbacks
2015-02-15 19:40:09 +01:00
Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2015-02-19 10:36:45 -08:00
Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-02-22 17:42:14 -08:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2015-02-21 12:59:04 -08:00
IOMMU Updates for Linux v3.20
2015-02-12 09:16:56 -08:00
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
2015-02-21 19:41:38 -08:00
Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2015-02-19 10:36:45 -08:00
OK, this has the big virtio 1.0 implementation, as specified by OASIS.
2015-02-18 09:24:01 -08:00
Merge branch 'mailbox-devel' of git://git.linaro.org/landing-teams/working/fujitsu/integration
2015-02-11 12:56:40 -08:00
- Significant dm-crypt CPU scalability performance improvements thanks
2015-02-21 13:28:45 -08:00
mm: gup: use get_user_pages_unlocked
2015-02-11 17:06:05 -08:00
Changes to existing drivers:
2015-02-18 09:05:48 -08:00
Char / Misc patches for 3.20-rc1
2015-02-15 10:48:44 -08:00
The clock framework changes for 3.20 contain the usual driver additions,
2015-02-21 12:30:30 -08:00
MTD updates for 3.20-rc1
2015-02-18 08:01:44 -08:00
Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2015-02-19 10:36:45 -08:00
PCI updates for v3.20:
2015-02-18 09:43:46 -08:00
PCI: Assign resources before drivers claim devices (pci_scan_root_bus())
2015-03-19 10:17:13 -05:00
ARM: SoC driver updates
2015-02-17 09:38:59 -08:00
USB patches for 3.20-rc1
2015-02-15 10:24:55 -08:00
This is the bulk of pin control changes for the v3.20 cycle:
2015-02-11 11:23:13 -08:00
Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2015-02-21 11:12:07 -08:00
Merge branches 'pnp', 'pm-cpuidle' and 'pm-cpufreq'
2015-02-21 04:29:16 +01:00
pwm: tegra: Use NSEC_PER_SEC
2015-02-18 08:40:29 +01:00
Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma
2015-02-18 08:49:20 -08:00
Changes to existing drivers:
2015-02-18 09:05:48 -08:00
Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2015-02-19 10:36:45 -08:00
Fairly small update, but there are some interesting new features.
2015-02-13 09:55:09 -08:00
SCSI misc on 20150221
2015-02-21 19:16:42 -08:00
ARM: SoC driver updates
2015-02-17 09:38:59 -08:00
Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2015-02-19 10:36:45 -08:00
treewide: Remove unnecessary SSB_DEVTABLE_END macro
2015-02-11 14:38:29 -08:00
Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-02-22 17:42:14 -08:00
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
2015-02-21 13:21:19 -08:00
thermal: exynos: fix: Check if data->tmu_read callback is present before read
2015-02-20 21:57:02 +08:00
Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2015-02-19 10:36:45 -08:00
Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2015-02-19 10:36:45 -08:00
USB patches for 3.20-rc1
2015-02-15 10:24:55 -08:00
vfio-pci: Add device request interface
2015-02-10 12:38:14 -07:00
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
2015-02-21 13:21:19 -08:00
mm: gup: use get_user_pages_unlocked
2015-02-11 17:06:05 -08:00
virtio: don't set VIRTIO_CONFIG_S_DRIVER_OK twice.
2015-02-17 16:19:29 +10:30
watchdog: bcm47xx_wdt.c: allow enabling on BCM5301X arch
2015-02-17 21:34:13 +01:00
SCSI misc on 20150209
2015-02-11 10:28:45 -08:00
b97ea289cf