linux/arch/x86/pci
Rafael J. Wysocki 7b1998116b ACPI / driver core: Store an ACPI device pointer in struct acpi_dev_node
Modify struct acpi_dev_node to contain a pointer to struct acpi_device
associated with the given device object (that is, its ACPI companion
device) instead of an ACPI handle corresponding to it.  Introduce two
new macros for manipulating that pointer in a CONFIG_ACPI-safe way,
ACPI_COMPANION() and ACPI_COMPANION_SET(), and rework the
ACPI_HANDLE() macro to take the above changes into account.
Drop the ACPI_HANDLE_SET() macro entirely and rework its users to
use ACPI_COMPANION_SET() instead.  For some of them who used to
pass the result of acpi_get_child() directly to ACPI_HANDLE_SET()
introduce a helper routine acpi_preset_companion() doing an
equivalent thing.

The main motivation for doing this is that there are things
represented by struct acpi_device objects that don't have valid
ACPI handles (so called fixed ACPI hardware features, such as
power and sleep buttons) and we would like to create platform
device objects for them and "glue" them to their ACPI companions
in the usual way (which currently is impossible due to the
lack of valid ACPI handles).  However, there are more reasons
why it may be useful.

First, struct acpi_device pointers allow of much better type checking
than void pointers which are ACPI handles, so it should be more
difficult to write buggy code using modified struct acpi_dev_node
and the new macros.  Second, the change should help to reduce (over
time) the number of places in which the result of ACPI_HANDLE() is
passed to acpi_bus_get_device() in order to obtain a pointer to the
struct acpi_device associated with the given "physical" device,
because now that pointer is returned by ACPI_COMPANION() directly.
Finally, the change should make it easier to write generic code that
will build both for CONFIG_ACPI set and unset without adding explicit
compiler directives to it.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com> # on Haswell
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Aaron Lu <aaron.lu@intel.com> # for ATA and SDIO part
2013-11-14 23:14:43 +01:00
..
acpi.c ACPI / driver core: Store an ACPI device pointer in struct acpi_dev_node 2013-11-14 23:14:43 +01:00
amd_bus.c x86: delete __cpuinit usage from all x86 files 2013-07-14 19:36:56 -04:00
broadcom_bus.c x86/PCI: dynamically allocate pci_root_info for native host bridge drivers 2012-04-30 14:52:43 -06:00
bus_numa.c X86: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
bus_numa.h x86/PCI: put busn resource in pci_root_info for native host bridge drivers 2012-06-13 15:42:24 -06:00
ce4100.c x86/ce4100: Fix PCI configuration register access for devices without interrupts 2012-10-30 10:16:47 +01:00
common.c x86/PCI: Map PCI setup data with ioremap() so it can be in highmem 2013-06-05 10:50:04 -06:00
direct.c x86: constify PCI raw ops structures 2011-10-14 09:05:28 -07:00
early.c x86/PCI: remove early PCI pr_debug statements 2009-11-24 15:25:19 -08:00
fixup.c x86/pci: Use cached pci_dev->pcie_cap to simplify code 2013-09-23 17:30:03 -06:00
i386.c x86 / PCI: prevent re-allocation of already existing bridge and ROM resources 2013-07-23 03:55:56 +02:00
init.c x86, olpc: Use pci subarch init for OLPC 2010-02-25 19:26:23 -08:00
intel_mid_pci.c intel_mid: Renamed *mrst* to *intel_mid* 2013-10-17 16:40:47 -07:00
irq.c x86/PCI: irq and pci_ids patch for Intel Panther Point DeviceIDs 2011-05-10 15:43:36 -07:00
legacy.c PCI changes for the v3.9 merge window: 2013-02-25 21:18:18 -08:00
Makefile intel_mid: Renamed *mrst* to *intel_mid* 2013-10-17 16:40:36 -07:00
mmconfig_32.c X86: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
mmconfig_64.c X86: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
mmconfig-shared.c Revert "x86/PCI: MMCONFIG: Check earlier for MMCONFIG region at address zero" 2013-10-04 16:15:29 -06:00
numachip.c x86/PCI: Add NumaChip remote PCI support 2012-12-07 14:24:32 -07:00
numaq_32.c PCI changes for the v3.9 merge window: 2013-02-25 21:18:18 -08:00
olpc.c x86: constify PCI raw ops structures 2011-10-14 09:05:28 -07:00
pcbios.c X86: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
sta2x11-fixup.c x86, platform: Initial support for sta2x11 I/O hub 2012-04-12 11:10:30 -07:00
visws.c PCI: Provide a default pcibios_update_irq() 2012-09-18 17:28:21 -06:00
xen.c PCI: Add x86_msi.msi_mask_irq() and msix_mask_irq() 2013-11-06 16:32:19 -07:00