| Commit message (Collapse) | Author | Age | Files | Lines |
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* pci/bjorn-remove-fakephp:
PCI: Remove the fakephp driver
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The fakephp driver was scheduled for removal in 2011.
Fakephp presented /sys/bus/pci/slots/.../power files for every PCI
function. Writing "0" to one of these files logically removed the device
from the system. The PCI core now provides the same functionality with
/sys/bus/pci/devices/.../remove.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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* pci/bjorn-cleanup-remove:
PCI: Remove unused pci_dev_b()
sgi-agp: Use list_for_each_entry() for bus->devices traversal
parisc/PCI: Use list_for_each_entry() for bus->devices traversal
parisc/PCI: Enable PERR/SERR on all devices
frv/PCI: Use list_for_each_entry() for bus->devices traversal
PCI: Leave normal LIST_POISON in deleted list entries
PCI: Rename local variables to conventional names
PCI: Remove unused, commented-out, code
PCI: Stop and remove devices in one pass
PCI: Fold stop and remove helpers into their callers
PCI: Use list_for_each_entry() for bus->devices traversal
PCI: Remove pci_stop_and_remove_behind_bridge()
PCI: Don't export stop_bus_device and remove_bus_device interfaces
pcmcia: Use common pci_stop_and_remove_bus_device()
PCI: acpiphp: Use common pci_stop_and_remove_bus_device()
PCI: acpiphp: Stop disabling bridges on remove
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list_del() already sets next/prev to LIST_POISON1/LIST_POISON2, so we
don't need to do anything special here to prevent further list accesses.
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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"bus" is the conventional name for a "struct pci_bus *" variable.
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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This removes unused code that was already commented out.
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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Previously, when we removed a PCI device, we made two passes over the
hierarchy rooted at the device. In the first pass, we stopped all
the devices, and in the second, we removed them.
This patch combines the two passes into one so that we remove a device as
soon as it and all its children have been stopped.
Note that we previously stopped devices in reverse order and removed them
in forward order. Now we stop and remove them in reverse order.
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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pci_stop_bus_devices() is only two lines of code and is only called by
pci_stop_bus_device(), so I think it's easier to read if we just fold it
into the caller. Similarly for __pci_remove_behind_bridge().
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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Replace list_for_each() + pci_dev_b() with the simpler
list_for_each_entry().
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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The PCMCIA CardBus driver was the only user of
pci_stop_and_remove_behind_bridge(), and it now uses
pci_stop_and_remove_bus_device() instead, so remove this interface.
This removes exported symbol pci_stop_and_remove_behind_bridge.
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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The acpiphp hotplug driver was the only user of pci_stop_bus_device() and
__pci_remove_bus_device(), and it now uses pci_stop_and_remove_bus_device()
instead, so stop exposing these interfaces.
This removes these exported symbols:
__pci_remove_bus_device
pci_stop_bus_device
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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Use pci_stop_and_remove_bus_device() like most other hotplug drivers
rather than stopping and removing separately.
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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acpiphp_disable_slot() turns off power to the slot immediately after
calling disable_device(), so there's no point in disabling any bridges
below the slot: we're about to turn them off anyway.
Tested-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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* pci/bjorn-find-next-ext-cap:
PCI: Add Vendor-Specific Extended Capability header info
PCI: Add pci_find_next_ext_capability()
Conflicts:
drivers/pci/pci.c
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Some extended capabilities, e.g., the vendor-specific capability, can
occur several times. The existing pci_find_ext_capability() only finds
the first occurrence. This adds pci_find_next_ext_capability(), which
can iterate through all of them.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use PCI Express Capability access functions to simplify PCIe ASPM.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use PCI Express Capability access functions to simplify PCIe AER.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use PCI Express Capability access functions to simplify PCIe PME.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use PCI Express Capability access functions to simplify pciehp.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
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Use PCI Express Capability access functions to simplify portdrv.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
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Use PCI Express Capability access functions to simplify pcihp_slot.c.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
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Before initiating an FLR, we should wait for completion of any outstanding
non-posted requests. See PCIe spec r3.0, sec 6.6.2.
This makes reset_intel_82599_sfp_virtfn() very similar to the generic
pcie_flr(). The only difference is that the 82599 doesn't report FLR
support in the VF Device Capability register.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use PCI Express Capability access functions to simplify core.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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The PCI Express Capability (PCIe spec r3.0, sec 7.8) comes in two
versions, v1 and v2. In v1 Capability structures (PCIe spec r1.0 and
r1.1), some fields are optional, so the structure size depends on the
device type.
This patch adds functions to access this capability so drivers don't
have to be aware of the differences between v1 and v2. Note that these
new functions apply only to the "PCI Express Capability," not to any of
the other "PCI Express Extended Capabilities" (AER, VC, ACS, MFVC, etc.)
Function pcie_capability_read_word/dword() reads the PCIe Capabilities
register and returns the value in the reference parameter "val". If
the PCIe Capabilities register is not implemented on the PCIe device,
"val" is set to 0.
Function pcie_capability_write_word/dword() writes the value to the
specified PCIe Capability register.
Function pcie_capability_clear_and_set_word/dword() sets and/or clears bits
of a PCIe Capability register.
[bhelgaas: changelog, drop "pci_" prefixes, don't export
pcie_capability_reg_implemented()]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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With introduction of pci_pcie_type(), pci_dev->pcie_type field becomes
redundant, so remove it.
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Introduce an inline function pci_pcie_type(dev) to extract PCIe
device type from pci_dev->pcie_flags_reg field, and prepare for
removing pci_dev->pcie_type.
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Since PCI Express Capabilities Register is read only, cache its value
into struct pci_dev to avoid repeatedly calling pci_read_config_*().
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull the trivial tree from Jiri Kosina:
"Tiny usual fixes all over the place"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (34 commits)
doc: fix old config name of kprobetrace
fs/fs-writeback.c: cleanup riteback_sb_inodes kerneldoc
btrfs: fix the commment for the action flags in delayed-ref.h
btrfs: fix trivial typo for the comment of BTRFS_FREE_INO_OBJECTID
vfs: fix kerneldoc for generic_fh_to_parent()
treewide: fix comment/printk/variable typos
ipr: fix small coding style issues
doc: fix broken utf8 encoding
nfs: comment fix
platform/x86: fix asus_laptop.wled_type module parameter
mfd: printk/comment fixes
doc: getdelays.c: remember to close() socket on error in create_nl_socket()
doc: aliasing-test: close fd on write error
mmc: fix comment typos
dma: fix comments
spi: fix comment/printk typos in spi
Coccinelle: fix typo in memdup_user.cocci
tmiofb: missing NULL pointer checks
tools: perf: Fix typo in tools/perf
tools/testing: fix comment / output typos
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Commit 982245f01734e9d5a3ab98b2b2e9761ae7719094 ("remove
CONFIG_PCI_NAMES") removed pci's usage of classlist.h, devlist.h, and
gen-devlist. Remove pci's .gitignore file, because now none of its
entries are used.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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If we try to print to the console device while its decoding is disabled,
the system will hang.
Reported-and-tested-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Olof Johansson <olof@lixom.net>
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This patch fixes the following bug:
http://marc.info/?l=linux-pci&m=134338059022620&w=2
Where lspci does not work properly if a device and the corresponding
parent bridge (such as PCIe port) is suspended. This is because the
device configuration space registers will be not accessible if the
corresponding parent bridge is suspended or the device is put into
D3cold state.
To solve the issue, the bridge/PCIe port connected to the device is
put into active state before read/write configuration space registers.
If the device is in D3cold state, it will be put into active state
too.
To avoid resume/suspend PCIe port for each configuration register
read/write, a small delay is added before the PCIe port to go
suspended.
Reported-by: Bjorn Mork <bjorn@mork.no>
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rafael J. Wysocki <rjw@sisk.pl>
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This patch fixes the following bug:
http://marc.info/?l=linux-pci&m=134329923124234&w=2
The root cause of the bug is as follow.
If a device is not bound with the corresponding driver, the device
runtime PM will be disabled and the device will be put into suspended
state. So that, the bridge/PCIe port connected to it may be put into
suspended and low power state. When do probing for the device later,
because the bridge/PCIe port connected to it is in low power state,
the IO access to device may fail.
To solve the issue, the bridge/PCIe port connected to the device is
put into active state before probing.
Reported-by: Bjorn Mork <bjorn@mork.no>
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rafael J. Wysocki <rjw@sisk.pl>
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This patch fixes the following bug:
http://marc.info/?l=linux-usb&m=134318961120825&w=2
Originally, device lower power states include D1, D2, D3. After that,
D3 is further divided into D3hot and D3cold. To support both scenario
safely, original D3 is mapped to D3cold.
When adding D3cold support, because worry about some device may have
broken D3cold support, D3cold is disabled by default. This disable D3
on original platform too. But some original platform may only have
working D3, but no working D1, D2. The root cause of the above bug is
it too.
To deal with this, this patch enables D3/D3cold by default for most
devices. This restores the original behavior. For some devices that
suspected to have broken D3cold support, such as PCIe port, D3cold is
disabled by default.
Reported-by: Bjorn Mork <bjorn@mork.no>
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rafael J. Wysocki <rjw@sisk.pl>
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Commit dbf0e4c (PCI: EHCI: fix crash during suspend on ASUS
computers) added a workaround for an ASUS suspend issue related to
USB EHCI and a bug in a number of ASUS BIOSes that attempt to shut
down the EHCI controller during system suspend if its PCI command
register doesn't contain 0 at that time.
It turns out that the same workaround is necessary in the analogous
hibernation code path, so add it.
References: https://bugzilla.kernel.org/show_bug.cgi?id=45811
Reported-and-tested-by: Oleksij Rempel <bug-track@fisher-privat.net>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: stable@vger.kernel.org
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If a PCI device is put into D3_cold by acpi_bus_set_power(),
the message printed by acpi_pci_set_power_state() says that its
power state has been changed to D4, which doesn't make sense.
In turn, if the device is put into D3_hot, the message simply
says "D3" without specifying the variant of the D3 state.
Fix this by using the pci_power_name() macro for printing the state
name instead of building it from the numeric value corresponding to
the given state directly.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Pull PCI changes from Bjorn Helgaas:
"Host bridge hotplug:
- Add MMCONFIG support for hot-added host bridges (Jiang Liu)
Device hotplug:
- Move fixups from __init to __devinit (Sebastian Andrzej Siewior)
- Call FINAL fixups for hot-added devices, too (Myron Stowe)
- Factor out generic code for P2P bridge hot-add (Yinghai Lu)
- Remove all functions in a slot, not just those with _EJx (Amos
Kong)
Dynamic resource management:
- Track bus number allocation (struct resource tree per domain)
(Yinghai Lu)
- Make P2P bridge 1K I/O windows work with resource reassignment
(Bjorn Helgaas, Yinghai Lu)
- Disable decoding while updating 64-bit BARs (Bjorn Helgaas)
Power management:
- Add PCIe runtime D3cold support (Huang Ying)
Virtualization:
- Add VFIO infrastructure (ACS, DMA source ID quirks) (Alex
Williamson)
- Add quirks for devices with broken INTx masking (Jan Kiszka)
Miscellaneous:
- Fix some PCI Express capability version issues (Myron Stowe)
- Factor out some arch code with a weak, generic, pcibios_setup()
(Myron Stowe)"
* tag 'for-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (122 commits)
PCI: hotplug: ensure a consistent return value in error case
PCI: fix undefined reference to 'pci_fixup_final_inited'
PCI: build resource code for M68K architecture
PCI: pciehp: remove unused pciehp_get_max_lnk_width(), pciehp_get_cur_lnk_width()
PCI: reorder __pci_assign_resource() (no change)
PCI: fix truncation of resource size to 32 bits
PCI: acpiphp: merge acpiphp_debug and debug
PCI: acpiphp: remove unused res_lock
sparc/PCI: replace pci_cfg_fake_ranges() with pci_read_bridge_bases()
PCI: call final fixups hot-added devices
PCI: move final fixups from __init to __devinit
x86/PCI: move final fixups from __init to __devinit
MIPS/PCI: move final fixups from __init to __devinit
PCI: support sizing P2P bridge I/O windows with 1K granularity
PCI: reimplement P2P bridge 1K I/O windows (Intel P64H2)
PCI: disable MEM decoding while updating 64-bit MEM BARs
PCI: leave MEM and IO decoding disabled during 64-bit BAR sizing, too
PCI: never discard enable/suspend/resume_early/resume fixups
PCI: release temporary reference in __nv_msi_ht_cap_quirk()
PCI: restructure 'pci_do_fixups()'
...
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* pci/yinghai-pciehp-unused:
PCI: pciehp: remove unused pciehp_get_max_lnk_width(), pciehp_get_cur_lnk_width()
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pciehp_get_cur_lnk_width()
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
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* pci/nikhil-big-bar-fixes:
PCI: reorder __pci_assign_resource() (no change)
PCI: fix truncation of resource size to 32 bits
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Reorder functions so __pci_assign_resource(), _pci_assign_resource(),
and pci_assign_resource() are closer together. No code change.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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_pci_assign_resource() took an int "size" argument, which meant that
sizes larger than 4GB were truncated. Change type to resource_size_t.
[bhelgaas: changelog]
Signed-off-by: Nikhil P Rao <nikhil.rao@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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* pci/julia-return-values:
PCI: hotplug: ensure a consistent return value in error case
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Typically, the return value desired for the failure of a function with an
integer return value is a negative integer. In these cases, the return
value is sometimes a negative integer and sometimes 0, due to a subsequent
initialization of the return variable within the loop.
A simplified version of the semantic match that finds this problem is:
(http://coccinelle.lip6.fr/)
//<smpl>
@r exists@
identifier ret;
position p;
constant C;
expression e1,e3,e4;
statement S;
@@
ret = -C
... when != ret = e3
when any
if@p (...) S
... when any
if (\(ret != 0\|ret < 0\|ret > 0\) || ...) { ... return ...; }
... when != ret = e3
when any
*if@p (...)
{
... when != ret = e4
return ret;
}
//</smpl>
[bhelgaas: squashed into one patch]
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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* pci/myron-final-fixups-v2:
PCI: fix undefined reference to 'pci_fixup_final_inited'
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My "PCI: Integrate 'pci_fixup_final' quirks into hot-plug paths" patch
introduced an undefined reference to 'pci_fixup_final_inited' when
CONFIG_PCI_QUIRKS is not enabled (on x86_64):
drivers/built-in.o: In function `pci_bus_add_device':
(.text+0x4f62): undefined reference to `pci_fixup_final_inited'
This patch removes the external reference ending up with a result closer
to what we ultimately want when the boot path issues described in the
original patch are resolved.
References:
https://lkml.org/lkml/2012/7/9/542 Original, offending, patch
https://lkml.org/lkml/2012/7/12/338 Randy's catch
Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Myron Stowe <myron.stowe@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
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* pci/greg-m68k:
PCI: build resource code for M68K architecture
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The ColdFire M54xx family of CPU cores (supported by the m68k arch code)
have PCI bus hardware. We want to be able to use this and will need the
setup-bus.c and setup-irq.c helper functions. So when CONFIG_M68K is
enabled add them to the objs build list.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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* pci/yinghai-hotplug-cleanup:
PCI: acpiphp: merge acpiphp_debug and debug
PCI: acpiphp: remove unused res_lock
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Should not have two, just remove debug, and use module_param_named
instead.
Also change acpiphp_debug to bool.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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res_lock is never used, so remove it.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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