Merge tag 'pm+acpi-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management updates from Rafael J Wysocki:

 - New power capping framework and the the Intel Running Average Power
   Limit (RAPL) driver using it from Srinivas Pandruvada and Jacob Pan.

 - Addition of the in-kernel switching feature to the arm_big_little
   cpufreq driver from Viresh Kumar and Nicolas Pitre.

 - cpufreq support for iMac G5 from Aaro Koskinen.

 - Baytrail processors support for intel_pstate from Dirk Brandewie.

 - cpufreq support for Midway/ECX-2000 from Mark Langsdorf.

 - ARM vexpress/TC2 cpufreq support from Sudeep KarkadaNagesha.

 - ACPI power management support for the I2C and SPI bus types from Mika
   Westerberg and Lv Zheng.

 - cpufreq core fixes and cleanups from Viresh Kumar, Srivatsa S Bhat,
   Stratos Karafotis, Xiaoguang Chen, Lan Tianyu.

 - cpufreq drivers updates (mostly fixes and cleanups) from Viresh
   Kumar, Aaro Koskinen, Jungseok Lee, Sudeep KarkadaNagesha, Lukasz
   Majewski, Manish Badarkhe, Hans-Christian Egtvedt, Evgeny Kapaev.

 - intel_pstate updates from Dirk Brandewie and Adrian Huang.

 - ACPICA update to version 20130927 includig fixes and cleanups and
   some reduction of divergences between the ACPICA code in the kernel
   and ACPICA upstream in order to improve the automatic ACPICA patch
   generation process.  From Bob Moore, Lv Zheng, Tomasz Nowicki, Naresh
   Bhat, Bjorn Helgaas, David E Box.

 - ACPI IPMI driver fixes and cleanups from Lv Zheng.

 - ACPI hotplug fixes and cleanups from Bjorn Helgaas, Toshi Kani, Zhang
   Yanfei, Rafael J Wysocki.

 - Conversion of the ACPI AC driver to the platform bus type and
   multiple driver fixes and cleanups related to ACPI from Zhang Rui.

 - ACPI processor driver fixes and cleanups from Hanjun Guo, Jiang Liu,
   Bartlomiej Zolnierkiewicz, Mathieu Rhéaume, Rafael J Wysocki.

 - Fixes and cleanups and new blacklist entries related to the ACPI
   video support from Aaron Lu, Felipe Contreras, Lennart Poettering,
   Kirill Tkhai.

 - cpuidle core cleanups from Viresh Kumar and Lorenzo Pieralisi.

 - cpuidle drivers fixes and cleanups from Daniel Lezcano, Jingoo Han,
   Bartlomiej Zolnierkiewicz, Prarit Bhargava.

 - devfreq updates from Sachin Kamat, Dan Carpenter, Manish Badarkhe.

 - Operation Performance Points (OPP) core updates from Nishanth Menon.

 - Runtime power management core fix from Rafael J Wysocki and update
   from Ulf Hansson.

 - Hibernation fixes from Aaron Lu and Rafael J Wysocki.

 - Device suspend/resume lockup detection mechanism from Benoit Goby.

 - Removal of unused proc directories created for various ACPI drivers
   from Lan Tianyu.

 - ACPI LPSS driver fix and new device IDs for the ACPI platform scan
   handler from Heikki Krogerus and Jarkko Nikula.

 - New ACPI _OSI blacklist entry for Toshiba NB100 from Levente Kurusa.

 - Assorted fixes and cleanups related to ACPI from Andy Shevchenko, Al
   Stone, Bartlomiej Zolnierkiewicz, Colin Ian King, Dan Carpenter,
   Felipe Contreras, Jianguo Wu, Lan Tianyu, Yinghai Lu, Mathias Krause,
   Liu Chuansheng.

 - Assorted PM fixes and cleanups from Andy Shevchenko, Thierry Reding,
   Jean-Christophe Plagniol-Villard.

* tag 'pm+acpi-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (386 commits)
  cpufreq: conservative: fix requested_freq reduction issue
  ACPI / hotplug: Consolidate deferred execution of ACPI hotplug routines
  PM / runtime: Use pm_runtime_put_sync() in __device_release_driver()
  ACPI / event: remove unneeded NULL pointer check
  Revert "ACPI / video: Ignore BIOS initial backlight value for HP 250 G1"
  ACPI / video: Quirk initial backlight level 0
  ACPI / video: Fix initial level validity test
  intel_pstate: skip the driver if ACPI has power mgmt option
  PM / hibernate: Avoid overflow in hibernate_preallocate_memory()
  ACPI / hotplug: Do not execute "insert in progress" _OST
  ACPI / hotplug: Carry out PCI root eject directly
  ACPI / hotplug: Merge device hot-removal routines
  ACPI / hotplug: Make acpi_bus_hot_remove_device() internal
  ACPI / hotplug: Simplify device ejection routines
  ACPI / hotplug: Fix handle_root_bridge_removal()
  ACPI / hotplug: Refuse to hot-remove all objects with disabled hotplug
  ACPI / scan: Start matching drivers after trying scan handlers
  ACPI: Remove acpi_pci_slot_init() headers from internal.h
  ACPI / blacklist: fix name of ThinkPad Edge E530
  PowerCap: Fix build error with option -Werror=format-security
  ...

Conflicts:
	arch/arm/mach-omap2/opp.c
	drivers/Kconfig
	drivers/spi/spi.c

1 files changed, 73 insertions, 103 deletions

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index fee8a297c7d9..55f9dedbbf9f 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -125,8 +125,8 @@ acpi_device_modalias_show(struct device *dev, struct device_attribute *attr, cha
 }
 static DEVICE_ATTR(modalias, 0444, acpi_device_modalias_show, NULL);
 
-static acpi_status acpi_bus_offline_companions(acpi_handle handle, u32 lvl,
-                                               void *data, void **ret_p)
+static acpi_status acpi_bus_offline(acpi_handle handle, u32 lvl, void *data,
+                                    void **ret_p)
 {
         struct acpi_device *device = NULL;
         struct acpi_device_physical_node *pn;
@@ -136,6 +136,11 @@ static acpi_status acpi_bus_offline_companions(acpi_handle handle, u32 lvl,
         if (acpi_bus_get_device(handle, &device))
                 return AE_OK;
 
+        if (device->handler && !device->handler->hotplug.enabled) {
+                *ret_p = &device->dev;
+                return AE_SUPPORT;
+        }
+
         mutex_lock(&device->physical_node_lock);
 
         list_for_each_entry(pn, &device->physical_node_list, node) {
@@ -168,8 +173,8 @@ static acpi_status acpi_bus_offline_companions(acpi_handle handle, u32 lvl,
         return status;
 }
 
-static acpi_status acpi_bus_online_companions(acpi_handle handle, u32 lvl,
-                                              void *data, void **ret_p)
+static acpi_status acpi_bus_online(acpi_handle handle, u32 lvl, void *data,
+                                   void **ret_p)
 {
         struct acpi_device *device = NULL;
         struct acpi_device_physical_node *pn;
@@ -214,26 +219,32 @@ static int acpi_scan_hot_remove(struct acpi_device *device)
          * If the first pass is successful, the second one isn't needed, though.
          */
         errdev = NULL;
-        acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX,
-                            NULL, acpi_bus_offline_companions,
-                            (void *)false, (void **)&errdev);
-        acpi_bus_offline_companions(handle, 0, (void *)false, (void **)&errdev);
+        status = acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX,
+                                     NULL, acpi_bus_offline, (void *)false,
+                                     (void **)&errdev);
+        if (status == AE_SUPPORT) {
+                dev_warn(errdev, "Offline disabled.\n");
+                acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX,
+                                    acpi_bus_online, NULL, NULL, NULL);
+                put_device(&device->dev);
+                return -EPERM;
+        }
+        acpi_bus_offline(handle, 0, (void *)false, (void **)&errdev);
         if (errdev) {
                 errdev = NULL;
                 acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX,
-                                    NULL, acpi_bus_offline_companions,
-                                    (void *)true , (void **)&errdev);
+                                    NULL, acpi_bus_offline, (void *)true,
+                                    (void **)&errdev);
                 if (!errdev || acpi_force_hot_remove)
-                        acpi_bus_offline_companions(handle, 0, (void *)true,
-                                                    (void **)&errdev);
+                        acpi_bus_offline(handle, 0, (void *)true,
+                                         (void **)&errdev);
 
                 if (errdev && !acpi_force_hot_remove) {
                         dev_warn(errdev, "Offline failed.\n");
-                        acpi_bus_online_companions(handle, 0, NULL, NULL);
+                        acpi_bus_online(handle, 0, NULL, NULL);
                         acpi_walk_namespace(ACPI_TYPE_ANY, handle,
-                                            ACPI_UINT32_MAX,
-                                            acpi_bus_online_companions, NULL,
-                                            NULL, NULL);
+                                            ACPI_UINT32_MAX, acpi_bus_online,
+                                            NULL, NULL, NULL);
                         put_device(&device->dev);
                         return -EBUSY;
                 }
@@ -274,10 +285,10 @@ static int acpi_scan_hot_remove(struct acpi_device *device)
         return 0;
 }
 
-static void acpi_bus_device_eject(void *context)
+void acpi_bus_device_eject(void *data, u32 ost_src)
 {
-        acpi_handle handle = context;
-        struct acpi_device *device = NULL;
+        struct acpi_device *device = data;
+        acpi_handle handle = device->handle;
         struct acpi_scan_handler *handler;
         u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
         int error;
@@ -285,38 +296,41 @@ static void acpi_bus_device_eject(void *context)
         lock_device_hotplug();
         mutex_lock(&acpi_scan_lock);
 
-        acpi_bus_get_device(handle, &device);
-        if (!device)
-                goto err_out;
-
         handler = device->handler;
         if (!handler || !handler->hotplug.enabled) {
-                ost_code = ACPI_OST_SC_EJECT_NOT_SUPPORTED;
-                goto err_out;
+                put_device(&device->dev);
+                goto err_support;
         }
-        acpi_evaluate_hotplug_ost(handle, ACPI_NOTIFY_EJECT_REQUEST,
-                                  ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
+
+        if (ost_src == ACPI_NOTIFY_EJECT_REQUEST)
+                acpi_evaluate_hotplug_ost(handle, ACPI_NOTIFY_EJECT_REQUEST,
+                                          ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
+
         if (handler->hotplug.mode == AHM_CONTAINER)
                 kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
 
-        get_device(&device->dev);
         error = acpi_scan_hot_remove(device);
-        if (error)
+        if (error == -EPERM) {
+                goto err_support;
+        } else if (error) {
                 goto err_out;
+        }
 
  out:
         mutex_unlock(&acpi_scan_lock);
         unlock_device_hotplug();
         return;
 
+ err_support:
+        ost_code = ACPI_OST_SC_EJECT_NOT_SUPPORTED;
  err_out:
-        acpi_evaluate_hotplug_ost(handle, ACPI_NOTIFY_EJECT_REQUEST, ost_code,
-                                  NULL);
+        acpi_evaluate_hotplug_ost(handle, ost_src, ost_code, NULL);
         goto out;
 }
 
-static void acpi_scan_bus_device_check(acpi_handle handle, u32 ost_source)
+static void acpi_scan_bus_device_check(void *data, u32 ost_source)
 {
+        acpi_handle handle = data;
         struct acpi_device *device = NULL;
         u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
         int error;
@@ -331,8 +345,6 @@ static void acpi_scan_bus_device_check(acpi_handle handle, u32 ost_source)
                         goto out;
                 }
         }
-        acpi_evaluate_hotplug_ost(handle, ost_source,
-                                  ACPI_OST_SC_INSERT_IN_PROGRESS, NULL);
         error = acpi_bus_scan(handle);
         if (error) {
                 acpi_handle_warn(handle, "Namespace scan failure\n");
@@ -353,18 +365,6 @@ static void acpi_scan_bus_device_check(acpi_handle handle, u32 ost_source)
         unlock_device_hotplug();
 }
 
-static void acpi_scan_bus_check(void *context)
-{
-        acpi_scan_bus_device_check((acpi_handle)context,
-                                   ACPI_NOTIFY_BUS_CHECK);
-}
-
-static void acpi_scan_device_check(void *context)
-{
-        acpi_scan_bus_device_check((acpi_handle)context,
-                                   ACPI_NOTIFY_DEVICE_CHECK);
-}
-
 static void acpi_hotplug_unsupported(acpi_handle handle, u32 type)
 {
         u32 ost_status;
@@ -395,8 +395,8 @@ static void acpi_hotplug_unsupported(acpi_handle handle, u32 type)
 
 static void acpi_hotplug_notify_cb(acpi_handle handle, u32 type, void *data)
 {
-        acpi_osd_exec_callback callback;
         struct acpi_scan_handler *handler = data;
+        struct acpi_device *adev;
         acpi_status status;
 
         if (!handler->hotplug.enabled)
@@ -405,56 +405,35 @@ static void acpi_hotplug_notify_cb(acpi_handle handle, u32 type, void *data)
         switch (type) {
         case ACPI_NOTIFY_BUS_CHECK:
                 acpi_handle_debug(handle, "ACPI_NOTIFY_BUS_CHECK event\n");
-                callback = acpi_scan_bus_check;
                 break;
         case ACPI_NOTIFY_DEVICE_CHECK:
                 acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK event\n");
-                callback = acpi_scan_device_check;
                 break;
         case ACPI_NOTIFY_EJECT_REQUEST:
                 acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n");
-                callback = acpi_bus_device_eject;
-                break;
+                status = acpi_bus_get_device(handle, &adev);
+                if (ACPI_FAILURE(status))
+                        goto err_out;
+
+                get_device(&adev->dev);
+                status = acpi_hotplug_execute(acpi_bus_device_eject, adev, type);
+                if (ACPI_SUCCESS(status))
+                        return;
+
+                put_device(&adev->dev);
+                goto err_out;
         default:
                 /* non-hotplug event; possibly handled by other handler */
                 return;
         }
-        status = acpi_os_hotplug_execute(callback, handle);
-        if (ACPI_FAILURE(status))
-                acpi_evaluate_hotplug_ost(handle, type,
-                                          ACPI_OST_SC_NON_SPECIFIC_FAILURE,
-                                          NULL);
-}
-
-/**
- * acpi_bus_hot_remove_device: hot-remove a device and its children
- * @context: struct acpi_eject_event pointer (freed in this func)
- *
- * Hot-remove a device and its children. This function frees up the
- * memory space passed by arg context, so that the caller may call
- * this function asynchronously through acpi_os_hotplug_execute().
- */
-void acpi_bus_hot_remove_device(void *context)
-{
-        struct acpi_eject_event *ej_event = context;
-        struct acpi_device *device = ej_event->device;
-        acpi_handle handle = device->handle;
-        int error;
-
-        lock_device_hotplug();
-        mutex_lock(&acpi_scan_lock);
-
-        error = acpi_scan_hot_remove(device);
-        if (error && handle)
-                acpi_evaluate_hotplug_ost(handle, ej_event->event,
-                                          ACPI_OST_SC_NON_SPECIFIC_FAILURE,
-                                          NULL);
+        status = acpi_hotplug_execute(acpi_scan_bus_device_check, handle, type);
+        if (ACPI_SUCCESS(status))
+                return;
 
-        mutex_unlock(&acpi_scan_lock);
-        unlock_device_hotplug();
-        kfree(context);
+ err_out:
+        acpi_evaluate_hotplug_ost(handle, type,
+                                  ACPI_OST_SC_NON_SPECIFIC_FAILURE, NULL);
 }
-EXPORT_SYMBOL(acpi_bus_hot_remove_device);
 
 static ssize_t real_power_state_show(struct device *dev,
                                      struct device_attribute *attr, char *buf)
@@ -487,10 +466,8 @@ acpi_eject_store(struct device *d, struct device_attribute *attr,
                 const char *buf, size_t count)
 {
         struct acpi_device *acpi_device = to_acpi_device(d);
-        struct acpi_eject_event *ej_event;
         acpi_object_type not_used;
         acpi_status status;
-        int ret;
 
         if (!count || buf[0] != '1')
                 return -EINVAL;
@@ -503,28 +480,18 @@ acpi_eject_store(struct device *d, struct device_attribute *attr,
         if (ACPI_FAILURE(status) || !acpi_device->flags.ejectable)
                 return -ENODEV;
 
-        ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL);
-        if (!ej_event) {
-                ret = -ENOMEM;
-                goto err_out;
-        }
         acpi_evaluate_hotplug_ost(acpi_device->handle, ACPI_OST_EC_OSPM_EJECT,
                                   ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
-        ej_event->device = acpi_device;
-        ej_event->event = ACPI_OST_EC_OSPM_EJECT;
         get_device(&acpi_device->dev);
-        status = acpi_os_hotplug_execute(acpi_bus_hot_remove_device, ej_event);
+        status = acpi_hotplug_execute(acpi_bus_device_eject, acpi_device,
+                                      ACPI_OST_EC_OSPM_EJECT);
         if (ACPI_SUCCESS(status))
                 return count;
 
         put_device(&acpi_device->dev);
-        kfree(ej_event);
-        ret = status == AE_NO_MEMORY ? -ENOMEM : -EAGAIN;
-
- err_out:
         acpi_evaluate_hotplug_ost(acpi_device->handle, ACPI_OST_EC_OSPM_EJECT,
                                   ACPI_OST_SC_NON_SPECIFIC_FAILURE, NULL);
-        return ret;
+        return status == AE_NO_MEMORY ? -ENOMEM : -EAGAIN;
 }
 
 static DEVICE_ATTR(eject, 0200, NULL, acpi_eject_store);
@@ -1676,7 +1643,6 @@ void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
 
 void acpi_device_add_finalize(struct acpi_device *device)
 {
-        device->flags.match_driver = true;
         dev_set_uevent_suppress(&device->dev, false);
         kobject_uevent(&device->dev.kobj, KOBJ_ADD);
 }
@@ -1915,8 +1881,12 @@ static acpi_status acpi_bus_device_attach(acpi_handle handle, u32 lvl_not_used,
                 return AE_OK;
 
         ret = acpi_scan_attach_handler(device);
-        if (ret)
-                return ret > 0 ? AE_OK : AE_CTRL_DEPTH;
+        if (ret < 0)
+                return AE_CTRL_DEPTH;
+
+        device->flags.match_driver = true;
+        if (ret > 0)
+                return AE_OK;
 
         ret = device_attach(&device->dev);
         return ret >= 0 ? AE_OK : AE_CTRL_DEPTH;