diff options
Diffstat (limited to 'drivers')
102 files changed, 1221 insertions, 940 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 92ed9692c47..4bf68c8d479 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -396,7 +396,7 @@ config ACPI_CUSTOM_METHOD config ACPI_BGRT bool "Boottime Graphics Resource Table support" - depends on EFI + depends on EFI && X86 help This driver adds support for exposing the ACPI Boottime Graphics Resource Table, which allows the operating system to obtain diff --git a/drivers/acpi/acpi_i2c.c b/drivers/acpi/acpi_i2c.c index 82045e3f5ca..a82c7626aa9 100644 --- a/drivers/acpi/acpi_i2c.c +++ b/drivers/acpi/acpi_i2c.c @@ -90,7 +90,7 @@ void acpi_i2c_register_devices(struct i2c_adapter *adapter) acpi_handle handle; acpi_status status; - handle = ACPI_HANDLE(&adapter->dev); + handle = ACPI_HANDLE(adapter->dev.parent); if (!handle) return; diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 5ff17306612..6ae5e440436 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -415,7 +415,6 @@ static int acpi_pci_root_add(struct acpi_device *device, struct acpi_pci_root *root; struct acpi_pci_driver *driver; u32 flags, base_flags; - bool is_osc_granted = false; root = kzalloc(sizeof(struct acpi_pci_root), GFP_KERNEL); if (!root) @@ -476,6 +475,30 @@ static int acpi_pci_root_add(struct acpi_device *device, flags = base_flags = OSC_PCI_SEGMENT_GROUPS_SUPPORT; acpi_pci_osc_support(root, flags); + /* + * TBD: Need PCI interface for enumeration/configuration of roots. + */ + + mutex_lock(&acpi_pci_root_lock); + list_add_tail(&root->node, &acpi_pci_roots); + mutex_unlock(&acpi_pci_root_lock); + + /* + * Scan the Root Bridge + * -------------------- + * Must do this prior to any attempt to bind the root device, as the + * PCI namespace does not get created until this call is made (and + * thus the root bridge's pci_dev does not exist). + */ + root->bus = pci_acpi_scan_root(root); + if (!root->bus) { + printk(KERN_ERR PREFIX + "Bus %04x:%02x not present in PCI namespace\n", + root->segment, (unsigned int)root->secondary.start); + result = -ENODEV; + goto out_del_root; + } + /* Indicate support for various _OSC capabilities. */ if (pci_ext_cfg_avail()) flags |= OSC_EXT_PCI_CONFIG_SUPPORT; @@ -494,6 +517,7 @@ static int acpi_pci_root_add(struct acpi_device *device, flags = base_flags; } } + if (!pcie_ports_disabled && (flags & ACPI_PCIE_REQ_SUPPORT) == ACPI_PCIE_REQ_SUPPORT) { flags = OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL @@ -514,54 +538,28 @@ static int acpi_pci_root_add(struct acpi_device *device, status = acpi_pci_osc_control_set(device->handle, &flags, OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL); if (ACPI_SUCCESS(status)) { - is_osc_granted = true; dev_info(&device->dev, "ACPI _OSC control (0x%02x) granted\n", flags); + if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_ASPM) { + /* + * We have ASPM control, but the FADT indicates + * that it's unsupported. Clear it. + */ + pcie_clear_aspm(root->bus); + } } else { - is_osc_granted = false; dev_info(&device->dev, "ACPI _OSC request failed (%s), " "returned control mask: 0x%02x\n", acpi_format_exception(status), flags); + pr_info("ACPI _OSC control for PCIe not granted, " + "disabling ASPM\n"); + pcie_no_aspm(); } } else { dev_info(&device->dev, - "Unable to request _OSC control " - "(_OSC support mask: 0x%02x)\n", flags); - } - - /* - * TBD: Need PCI interface for enumeration/configuration of roots. - */ - - mutex_lock(&acpi_pci_root_lock); - list_add_tail(&root->node, &acpi_pci_roots); - mutex_unlock(&acpi_pci_root_lock); - - /* - * Scan the Root Bridge - * -------------------- - * Must do this prior to any attempt to bind the root device, as the - * PCI namespace does not get created until this call is made (and - * thus the root bridge's pci_dev does not exist). - */ - root->bus = pci_acpi_scan_root(root); - if (!root->bus) { - printk(KERN_ERR PREFIX - "Bus %04x:%02x not present in PCI namespace\n", - root->segment, (unsigned int)root->secondary.start); - result = -ENODEV; - goto out_del_root; - } - - /* ASPM setting */ - if (is_osc_granted) { - if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_ASPM) - pcie_clear_aspm(root->bus); - } else { - pr_info("ACPI _OSC control for PCIe not granted, " - "disabling ASPM\n"); - pcie_no_aspm(); + "Unable to request _OSC control " + "(_OSC support mask: 0x%02x)\n", flags); } pci_acpi_add_bus_pm_notifier(device, root->bus); diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index fc95308e9a1..ee255c60bda 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -66,7 +66,8 @@ module_param(latency_factor, uint, 0644); static DEFINE_PER_CPU(struct cpuidle_device *, acpi_cpuidle_device); -static struct acpi_processor_cx *acpi_cstate[CPUIDLE_STATE_MAX]; +static DEFINE_PER_CPU(struct acpi_processor_cx * [CPUIDLE_STATE_MAX], + acpi_cstate); static int disabled_by_idle_boot_param(void) { @@ -722,7 +723,7 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index) { struct acpi_processor *pr; - struct acpi_processor_cx *cx = acpi_cstate[index]; + struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu); pr = __this_cpu_read(processors); @@ -745,7 +746,7 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev, */ static int acpi_idle_play_dead(struct cpuidle_device *dev, int index) { - struct acpi_processor_cx *cx = acpi_cstate[index]; + struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu); ACPI_FLUSH_CPU_CACHE(); @@ -775,7 +776,7 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index) { struct acpi_processor *pr; - struct acpi_processor_cx *cx = acpi_cstate[index]; + struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu); pr = __this_cpu_read(processors); @@ -833,7 +834,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index) { struct acpi_processor *pr; - struct acpi_processor_cx *cx = acpi_cstate[index]; + struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu); pr = __this_cpu_read(processors); @@ -960,7 +961,7 @@ static int acpi_processor_setup_cpuidle_cx(struct acpi_processor *pr, !(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED)) continue; #endif - acpi_cstate[count] = cx; + per_cpu(acpi_cstate[count], dev->cpu) = cx; count++; if (count == CPUIDLE_STATE_MAX) diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c index 5f74587ef25..71671c42ef4 100644 --- a/drivers/base/power/qos.c +++ b/drivers/base/power/qos.c @@ -46,6 +46,7 @@ #include "power.h" static DEFINE_MUTEX(dev_pm_qos_mtx); +static DEFINE_MUTEX(dev_pm_qos_sysfs_mtx); static BLOCKING_NOTIFIER_HEAD(dev_pm_notifiers); @@ -216,12 +217,17 @@ void dev_pm_qos_constraints_destroy(struct device *dev) struct pm_qos_constraints *c; struct pm_qos_flags *f; - mutex_lock(&dev_pm_qos_mtx); + mutex_lock(&dev_pm_qos_sysfs_mtx); /* * If the device's PM QoS resume latency limit or PM QoS flags have been * exposed to user space, they have to be hidden at this point. */ + pm_qos_sysfs_remove_latency(dev); + pm_qos_sysfs_remove_flags(dev); + + mutex_lock(&dev_pm_qos_mtx); + __dev_pm_qos_hide_latency_limit(dev); __dev_pm_qos_hide_flags(dev); @@ -254,6 +260,8 @@ void dev_pm_qos_constraints_destroy(struct device *dev) out: mutex_unlock(&dev_pm_qos_mtx); + + mutex_unlock(&dev_pm_qos_sysfs_mtx); } /** @@ -558,6 +566,14 @@ static void __dev_pm_qos_drop_user_request(struct device *dev, kfree(req); } +static void dev_pm_qos_drop_user_request(struct device *dev, + enum dev_pm_qos_req_type type) +{ + mutex_lock(&dev_pm_qos_mtx); + __dev_pm_qos_drop_user_request(dev, type); + mutex_unlock(&dev_pm_qos_mtx); +} + /** * dev_pm_qos_expose_latency_limit - Expose PM QoS latency limit to user space. * @dev: Device whose PM QoS latency limit is to be exposed to user space. @@ -581,6 +597,8 @@ int dev_pm_qos_expose_latency_limit(struct device *dev, s32 value) return ret; } + mutex_lock(&dev_pm_qos_sysfs_mtx); + mutex_lock(&dev_pm_qos_mtx); if (IS_ERR_OR_NULL(dev->power.qos)) @@ -591,26 +609,27 @@ int dev_pm_qos_expose_latency_limit(struct device *dev, s32 value) if (ret < 0) { __dev_pm_qos_remove_request(req); kfree(req); + mutex_unlock(&dev_pm_qos_mtx); goto out; } - dev->power.qos->latency_req = req; + + mutex_unlock(&dev_pm_qos_mtx); + ret = pm_qos_sysfs_add_latency(dev); if (ret) - __dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_LATENCY); + dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_LATENCY); out: - mutex_unlock(&dev_pm_qos_mtx); + mutex_unlock(&dev_pm_qos_sysfs_mtx); return ret; } EXPORT_SYMBOL_GPL(dev_pm_qos_expose_latency_limit); static void __dev_pm_qos_hide_latency_limit(struct device *dev) { - if (!IS_ERR_OR_NULL(dev->power.qos) && dev->power.qos->latency_req) { - pm_qos_sysfs_remove_latency(dev); + if (!IS_ERR_OR_NULL(dev->power.qos |