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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-24 16:17:07 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-24 16:17:07 -0700 |
commit | 6dd53aa4563a2c69e80a24d2cc68d484b5ea2891 (patch) | |
tree | 0cca9f65984b524527910960d972fc6ef85fac88 /drivers/acpi | |
parent | f14121ab35912e3d2e57ac9a4ce1f9d4b7baeffb (diff) | |
parent | 63b96f7baeba71966c723912c3f8f0274577f877 (diff) | |
download | linux-6dd53aa4563a2c69e80a24d2cc68d484b5ea2891.tar.gz |
Merge tag 'for-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
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()' ...
Diffstat (limited to 'drivers/acpi')
-rw-r--r-- | drivers/acpi/pci_root.c | 2 | ||||
-rw-r--r-- | drivers/acpi/sleep.c | 24 |
2 files changed, 21 insertions, 5 deletions
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 7aff6312ce7c..ec54014c321c 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -505,6 +505,8 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device) strcpy(acpi_device_class(device), ACPI_PCI_ROOT_CLASS); device->driver_data = root; + root->mcfg_addr = acpi_pci_root_get_mcfg_addr(device->handle); + /* * All supported architectures that use ACPI have support for * PCI domains, so we indicate this in _OSC support capabilities. diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index 88561029cca8..1cc02ca2af2a 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -716,8 +716,9 @@ int acpi_suspend(u32 acpi_state) * @dev: device to examine; its driver model wakeup flags control * whether it should be able to wake up the system * @d_min_p: used to store the upper limit of allowed states range - * Return value: preferred power state of the device on success, -ENODEV on - * failure (ie. if there's no 'struct acpi_device' for @dev) + * @d_max_in: specify the lowest allowed states + * Return value: preferred power state of the device on success, -ENODEV + * (ie. if there's no 'struct acpi_device' for @dev) or -EINVAL on failure * * Find the lowest power (highest number) ACPI device power state that * device @dev can be in while the system is in the sleep state represented @@ -732,13 +733,15 @@ int acpi_suspend(u32 acpi_state) * via @wake. */ -int acpi_pm_device_sleep_state(struct device *dev, int *d_min_p) +int acpi_pm_device_sleep_state(struct device *dev, int *d_min_p, int d_max_in) { acpi_handle handle = DEVICE_ACPI_HANDLE(dev); struct acpi_device *adev; char acpi_method[] = "_SxD"; unsigned long long d_min, d_max; + if (d_max_in < ACPI_STATE_D0 || d_max_in > ACPI_STATE_D3) + return -EINVAL; if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &adev))) { printk(KERN_DEBUG "ACPI handle has no context!\n"); return -ENODEV; @@ -746,8 +749,10 @@ int acpi_pm_device_sleep_state(struct device *dev, int *d_min_p) acpi_method[2] = '0' + acpi_target_sleep_state; /* - * If the sleep state is S0, we will return D3, but if the device has - * _S0W, we will use the value from _S0W + * If the sleep state is S0, the lowest limit from ACPI is D3, + * but if the device has _S0W, we will use the value from _S0W + * as the lowest limit from ACPI. Finally, we will constrain + * the lowest limit with the specified one. */ d_min = ACPI_STATE_D0; d_max = ACPI_STATE_D3; @@ -791,8 +796,17 @@ int acpi_pm_device_sleep_state(struct device *dev, int *d_min_p) } } + if (d_max_in < d_min) + return -EINVAL; if (d_min_p) *d_min_p = d_min; + /* constrain d_max with specified lowest limit (max number) */ + if (d_max > d_max_in) { + for (d_max = d_max_in; d_max > d_min; d_max--) { + if (adev->power.states[d_max].flags.valid) + break; + } + } return d_max; } #endif /* CONFIG_PM */ |