184 files changed, 1164 insertions, 642 deletions

diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index e59494c90402..b18cd2151ddb 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -40,7 +40,7 @@ acpi-$(CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC) += processor_pdc.o
 acpi-y                          += ec.o
 acpi-$(CONFIG_ACPI_DOCK)        += dock.o
 acpi-y                          += pci_root.o pci_link.o pci_irq.o
-acpi-y                          += acpi_lpss.o
+acpi-y                          += acpi_lpss.o acpi_apd.o
 acpi-y                          += acpi_platform.o
 acpi-y                          += acpi_pnp.o
 acpi-y                          += int340x_thermal.o
diff --git a/drivers/acpi/acpi_apd.c b/drivers/acpi/acpi_apd.c
new file mode 100644
index 000000000000..3984ea96e5f7
--- /dev/null
+++ b/drivers/acpi/acpi_apd.c
@@ -0,0 +1,150 @@
+/*
+ * AMD ACPI support for ACPI2platform device.
+ *
+ * Copyright (c) 2014,2015 AMD Corporation.
+ * Authors: Ken Xue <Ken.Xue@amd.com>
+ *      Wu, Jeff <Jeff.Wu@amd.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+#include <linux/pm_domain.h>
+#include <linux/clkdev.h>
+#include <linux/acpi.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/pm.h>
+
+#include "internal.h"
+
+ACPI_MODULE_NAME("acpi_apd");
+struct apd_private_data;
+
+/**
+ * ACPI_APD_SYSFS : add device attributes in sysfs
+ * ACPI_APD_PM : attach power domain to device
+ */
+#define ACPI_APD_SYSFS  BIT(0)
+#define ACPI_APD_PM     BIT(1)
+
+/**
+ * struct apd_device_desc - a descriptor for apd device
+ * @flags: device flags like %ACPI_APD_SYSFS, %ACPI_APD_PM
+ * @fixed_clk_rate: fixed rate input clock source for acpi device;
+ *                      0 means no fixed rate input clock source
+ * @setup: a hook routine to set device resource during create platform device
+ *
+ * Device description defined as acpi_device_id.driver_data
+ */
+struct apd_device_desc {
+        unsigned int flags;
+        unsigned int fixed_clk_rate;
+        int (*setup)(struct apd_private_data *pdata);
+};
+
+struct apd_private_data {
+        struct clk *clk;
+        struct acpi_device *adev;
+        const struct apd_device_desc *dev_desc;
+};
+
+#ifdef CONFIG_X86_AMD_PLATFORM_DEVICE
+#define APD_ADDR(desc)  ((unsigned long)&desc)
+
+static int acpi_apd_setup(struct apd_private_data *pdata)
+{
+        const struct apd_device_desc *dev_desc = pdata->dev_desc;
+        struct clk *clk = ERR_PTR(-ENODEV);
+
+        if (dev_desc->fixed_clk_rate) {
+                clk = clk_register_fixed_rate(&pdata->adev->dev,
+                                        dev_name(&pdata->adev->dev),
+                                        NULL, CLK_IS_ROOT,
+                                        dev_desc->fixed_clk_rate);
+                clk_register_clkdev(clk, NULL, dev_name(&pdata->adev->dev));
+                pdata->clk = clk;
+        }
+
+        return 0;
+}
+
+static struct apd_device_desc cz_i2c_desc = {
+        .setup = acpi_apd_setup,
+        .fixed_clk_rate = 133000000,
+};
+
+static struct apd_device_desc cz_uart_desc = {
+        .setup = acpi_apd_setup,
+        .fixed_clk_rate = 48000000,
+};
+
+#else
+
+#define APD_ADDR(desc) (0UL)
+
+#endif /* CONFIG_X86_AMD_PLATFORM_DEVICE */
+
+/**
+* Create platform device during acpi scan attach handle.
+* Return value > 0 on success of creating device.
+*/
+static int acpi_apd_create_device(struct acpi_device *adev,
+                                   const struct acpi_device_id *id)
+{
+        const struct apd_device_desc *dev_desc = (void *)id->driver_data;
+        struct apd_private_data *pdata;
+        struct platform_device *pdev;
+        int ret;
+
+        if (!dev_desc) {
+                pdev = acpi_create_platform_device(adev);
+                return IS_ERR_OR_NULL(pdev) ? PTR_ERR(pdev) : 1;
+        }
+
+        pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
+        if (!pdata)
+                return -ENOMEM;
+
+        pdata->adev = adev;
+        pdata->dev_desc = dev_desc;
+
+        if (dev_desc->setup) {
+                ret = dev_desc->setup(pdata);
+                if (ret)
+                        goto err_out;
+        }
+
+        adev->driver_data = pdata;
+        pdev = acpi_create_platform_device(adev);
+        if (!IS_ERR_OR_NULL(pdev))
+                return 1;
+
+        ret = PTR_ERR(pdev);
+        adev->driver_data = NULL;
+
+ err_out:
+        kfree(pdata);
+        return ret;
+}
+
+static const struct acpi_device_id acpi_apd_device_ids[] = {
+        /* Generic apd devices */
+        { "AMD0010", APD_ADDR(cz_i2c_desc) },
+        { "AMD0020", APD_ADDR(cz_uart_desc) },
+        { "AMD0030", },
+        { }
+};
+
+static struct acpi_scan_handler apd_handler = {
+        .ids = acpi_apd_device_ids,
+        .attach = acpi_apd_create_device,
+};
+
+void __init acpi_apd_init(void)
+{
+        acpi_scan_add_handler(&apd_handler);
+}
diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index dfd1b8095dad..02e835f3cf8a 100644
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -1,7 +1,7 @@
 /*
  * ACPI support for Intel Lynxpoint LPSS.
  *
- * Copyright (C) 2013, 2014, Intel Corporation
+ * Copyright (C) 2013, Intel Corporation
  * Authors: Mika Westerberg <mika.westerberg@linux.intel.com>
  *          Rafael J. Wysocki <rafael.j.wysocki@intel.com>
  *
@@ -60,8 +60,6 @@ ACPI_MODULE_NAME("acpi_lpss");
 #define LPSS_CLK_DIVIDER                BIT(2)
 #define LPSS_LTR                        BIT(3)
 #define LPSS_SAVE_CTX                   BIT(4)
-#define LPSS_DEV_PROXY                  BIT(5)
-#define LPSS_PROXY_REQ                  BIT(6)
 
 struct lpss_private_data;
 
@@ -72,10 +70,8 @@ struct lpss_device_desc {
         void (*setup)(struct lpss_private_data *pdata);
 };
 
-static struct device *proxy_device;
-
 static struct lpss_device_desc lpss_dma_desc = {
-        .flags = LPSS_CLK | LPSS_PROXY_REQ,
+        .flags = LPSS_CLK,
 };
 
 struct lpss_private_data {
@@ -129,7 +125,7 @@ static struct lpss_device_desc lpt_dev_desc = {
 };
 
 static struct lpss_device_desc lpt_i2c_dev_desc = {
-        .flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_LTR,
+        .flags = LPSS_CLK | LPSS_LTR,
         .prv_offset = 0x800,
 };
 
@@ -150,24 +146,22 @@ static struct lpss_device_desc byt_pwm_dev_desc = {
 };
 
 static struct lpss_device_desc byt_uart_dev_desc = {
-        .flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX |
-                 LPSS_DEV_PROXY,
+        .flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX,
         .prv_offset = 0x800,
         .setup = lpss_uart_setup,
 };
 
 static struct lpss_device_desc byt_spi_dev_desc = {
-        .flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX |
-                 LPSS_DEV_PROXY,
+        .flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_SAVE_CTX,
         .prv_offset = 0x400,
 };
 
 static struct lpss_device_desc byt_sdio_dev_desc = {
-        .flags = LPSS_CLK | LPSS_DEV_PROXY,
+        .flags = LPSS_CLK,
 };
 
 static struct lpss_device_desc byt_i2c_dev_desc = {
-        .flags = LPSS_CLK | LPSS_SAVE_CTX | LPSS_DEV_PROXY,
+        .flags = LPSS_CLK | LPSS_SAVE_CTX,
         .prv_offset = 0x800,
         .setup = byt_i2c_setup,
 };
@@ -340,6 +334,8 @@ static int acpi_lpss_create_device(struct acpi_device *adev,
                                 pdata->mmio_size = resource_size(rentry->res);
                         pdata->mmio_base = ioremap(rentry->res->start,
                                                    pdata->mmio_size);
+                        if (!pdata->mmio_base)
+                                goto err_out;
                         break;
                 }
 
@@ -374,8 +370,6 @@ static int acpi_lpss_create_device(struct acpi_device *adev,
         adev->driver_data = pdata;
         pdev = acpi_create_platform_device(adev);
         if (!IS_ERR_OR_NULL(pdev)) {
-                if (!proxy_device && dev_desc->flags & LPSS_DEV_PROXY)
-                        proxy_device = &pdev->dev;
                 return 1;
         }
 
@@ -600,14 +594,7 @@ static int acpi_lpss_runtime_suspend(struct device *dev)
         if (pdata->dev_desc->flags & LPSS_SAVE_CTX)
                 acpi_lpss_save_ctx(dev, pdata);
 
-        ret = acpi_dev_runtime_suspend(dev);
-        if (ret)
-                return ret;
-
-        if (pdata->dev_desc->flags & LPSS_PROXY_REQ && proxy_device)
-                return pm_runtime_put_sync_suspend(proxy_device);
-
-        return 0;
+        return acpi_dev_runtime_suspend(dev);
 }
 
 static int acpi_lpss_runtime_resume(struct device *dev)
@@ -615,12 +602,6 @@ static int acpi_lpss_runtime_resume(struct device *dev)
         struct lpss_private_data *pdata = acpi_driver_data(ACPI_COMPANION(dev));
         int ret;
 
-        if (pdata->dev_desc->flags & LPSS_PROXY_REQ && proxy_device) {
-                ret = pm_runtime_get_sync(proxy_device);
-                if (ret)
-                        return ret;
-        }
-
         ret = acpi_dev_runtime_resume(dev);
         if (ret)
                 return ret;
diff --git a/drivers/acpi/acpica/acapps.h b/drivers/acpi/acpica/acapps.h
index 3d2c88289da9..d863016565b5 100644
--- a/drivers/acpi/acpica/acapps.h
+++ b/drivers/acpi/acpica/acapps.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -47,7 +47,7 @@
 /* Common info for tool signons */
 
 #define ACPICA_NAME                 "Intel ACPI Component Architecture"
-#define ACPICA_COPYRIGHT            "Copyright (c) 2000 - 2014 Intel Corporation"
+#define ACPICA_COPYRIGHT            "Copyright (c) 2000 - 2015 Intel Corporation"
 
 #if ACPI_MACHINE_WIDTH == 64
 #define ACPI_WIDTH          "-64"
diff --git a/drivers/acpi/acpica/accommon.h b/drivers/acpi/acpica/accommon.h
index 6f1c616910ac..853aa2dbdb61 100644
--- a/drivers/acpi/acpica/accommon.h
+++ b/drivers/acpi/acpica/accommon.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acdebug.h b/drivers/acpi/acpica/acdebug.h
index 1d026ff1683f..4169bb87a996 100644
--- a/drivers/acpi/acpica/acdebug.h
+++ b/drivers/acpi/acpica/acdebug.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acdispat.h b/drivers/acpi/acpica/acdispat.h
index d3e2cc395d7f..408f04bcaab4 100644
--- a/drivers/acpi/acpica/acdispat.h
+++ b/drivers/acpi/acpica/acdispat.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acevents.h b/drivers/acpi/acpica/acevents.h
index 7a7811a9fc26..228704b78657 100644
--- a/drivers/acpi/acpica/acevents.h
+++ b/drivers/acpi/acpica/acevents.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -143,8 +143,6 @@ acpi_ev_match_gpe_method(acpi_handle obj_handle,
 acpi_status
 acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback, void *context);
 
-u8 acpi_ev_valid_gpe_event(struct acpi_gpe_event_info *gpe_event_info);
-
 acpi_status
 acpi_ev_get_gpe_device(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
                        struct acpi_gpe_block_info *gpe_block, void *context);
diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h
index 7f60582d0c8c..a165d25343e8 100644
--- a/drivers/acpi/acpica/acglobal.h
+++ b/drivers/acpi/acpica/acglobal.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/achware.h b/drivers/acpi/acpica/achware.h
index c318d3e27893..196a55244559 100644
--- a/drivers/acpi/acpica/achware.h
+++ b/drivers/acpi/acpica/achware.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acinterp.h b/drivers/acpi/acpica/acinterp.h
index b01f71ce0523..1886bde54b5d 100644
--- a/drivers/acpi/acpica/acinterp.h
+++ b/drivers/acpi/acpica/acinterp.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index 680d23bbae7c..7add32e5d8c5 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acmacros.h b/drivers/acpi/acpica/acmacros.h
index 4bceb11c7380..cf607fe69dbd 100644
--- a/drivers/acpi/acpica/acmacros.h
+++ b/drivers/acpi/acpica/acmacros.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acnamesp.h b/drivers/acpi/acpica/acnamesp.h
index ee1c040f321c..952fbe0b7231 100644
--- a/drivers/acpi/acpica/acnamesp.h
+++ b/drivers/acpi/acpica/acnamesp.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acobject.h b/drivers/acpi/acpica/acobject.h
index 8abb393dafab..3e9720e1f34f 100644
--- a/drivers/acpi/acpica/acobject.h
+++ b/drivers/acpi/acpica/acobject.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acopcode.h b/drivers/acpi/acpica/acopcode.h
index dda0e6affcf1..a5f17de45ac6 100644
--- a/drivers/acpi/acpica/acopcode.h
+++ b/drivers/acpi/acpica/acopcode.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acparser.h b/drivers/acpi/acpica/acparser.h
index 6168b85463ed..74a390c6db16 100644
--- a/drivers/acpi/acpica/acparser.h
+++ b/drivers/acpi/acpica/acparser.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acpredef.h b/drivers/acpi/acpica/acpredef.h
index bd3908d26c4f..a972d11c97c9 100644
--- a/drivers/acpi/acpica/acpredef.h
+++ b/drivers/acpi/acpica/acpredef.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acresrc.h b/drivers/acpi/acpica/acresrc.h
index 4b008e8884a1..efc4c7124ccc 100644
--- a/drivers/acpi/acpica/acresrc.h
+++ b/drivers/acpi/acpica/acresrc.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acstruct.h b/drivers/acpi/acpica/acstruct.h
index cf7346110bd8..d14b547b7cd5 100644
--- a/drivers/acpi/acpica/acstruct.h
+++ b/drivers/acpi/acpica/acstruct.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/actables.h b/drivers/acpi/acpica/actables.h
index 1afe46e44dac..1c127a43017b 100644
--- a/drivers/acpi/acpica/actables.h
+++ b/drivers/acpi/acpica/actables.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/acutils.h b/drivers/acpi/acpica/acutils.h
index 486d342e74b6..c2f03e8774ad 100644
--- a/drivers/acpi/acpica/acutils.h
+++ b/drivers/acpi/acpica/acutils.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/amlcode.h b/drivers/acpi/acpica/amlcode.h
index 5908ccec6aea..3a95068fc119 100644
--- a/drivers/acpi/acpica/amlcode.h
+++ b/drivers/acpi/acpica/amlcode.h
@@ -7,7 +7,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/amlresrc.h b/drivers/acpi/acpica/amlresrc.h
index 3a0beeb86ba5..ee0cdd60b93d 100644
--- a/drivers/acpi/acpica/amlresrc.h
+++ b/drivers/acpi/acpica/amlresrc.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dsargs.c b/drivers/acpi/acpica/dsargs.c
index 720b1cdda711..3e6989738e85 100644
--- a/drivers/acpi/acpica/dsargs.c
+++ b/drivers/acpi/acpica/dsargs.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dscontrol.c b/drivers/acpi/acpica/dscontrol.c
index 8daf9de82b73..39da9da62bbf 100644
--- a/drivers/acpi/acpica/dscontrol.c
+++ b/drivers/acpi/acpica/dscontrol.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dsfield.c b/drivers/acpi/acpica/dsfield.c
index c57666196672..43b40de90484 100644
--- a/drivers/acpi/acpica/dsfield.c
+++ b/drivers/acpi/acpica/dsfield.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dsinit.c b/drivers/acpi/acpica/dsinit.c
index aee5e45f6d35..bbe74bcebbae 100644
--- a/drivers/acpi/acpica/dsinit.c
+++ b/drivers/acpi/acpica/dsinit.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c
index 3c7f7378b94d..d72565a3c646 100644
--- a/drivers/acpi/acpica/dsmethod.c
+++ b/drivers/acpi/acpica/dsmethod.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dsmthdat.c b/drivers/acpi/acpica/dsmthdat.c
index b67522df01ac..2e4c42b377ec 100644
--- a/drivers/acpi/acpica/dsmthdat.c
+++ b/drivers/acpi/acpica/dsmthdat.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dsobject.c b/drivers/acpi/acpica/dsobject.c
index a1e7e6b6fcf7..8a7b07b6adc8 100644
--- a/drivers/acpi/acpica/dsobject.c
+++ b/drivers/acpi/acpica/dsobject.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dsopcode.c b/drivers/acpi/acpica/dsopcode.c
index 6c0759c0db47..77244182ff02 100644
--- a/drivers/acpi/acpica/dsopcode.c
+++ b/drivers/acpi/acpica/dsopcode.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dsutils.c b/drivers/acpi/acpica/dsutils.c
index 9f74795e2268..e5ff89bcb3f5 100644
--- a/drivers/acpi/acpica/dsutils.c
+++ b/drivers/acpi/acpica/dsutils.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dswexec.c b/drivers/acpi/acpica/dswexec.c
index f7f5107e754d..df54d46225cd 100644
--- a/drivers/acpi/acpica/dswexec.c
+++ b/drivers/acpi/acpica/dswexec.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dswload.c b/drivers/acpi/acpica/dswload.c
index 15623da26200..843942fb4be5 100644
--- a/drivers/acpi/acpica/dswload.c
+++ b/drivers/acpi/acpica/dswload.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dswload2.c b/drivers/acpi/acpica/dswload2.c
index 2ac28d297305..fcaa30c611fb 100644
--- a/drivers/acpi/acpica/dswload2.c
+++ b/drivers/acpi/acpica/dswload2.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dswscope.c b/drivers/acpi/acpica/dswscope.c
index 9d6e2c1de1f8..43b3ea40c0b6 100644
--- a/drivers/acpi/acpica/dswscope.c
+++ b/drivers/acpi/acpica/dswscope.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/dswstate.c b/drivers/acpi/acpica/dswstate.c
index 24f7d5ea678a..89ac2022465e 100644
--- a/drivers/acpi/acpica/dswstate.c
+++ b/drivers/acpi/acpica/dswstate.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/evevent.c b/drivers/acpi/acpica/evevent.c
index c7bffff9ed32..bf6873f95e72 100644
--- a/drivers/acpi/acpica/evevent.c
+++ b/drivers/acpi/acpica/evevent.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/evglock.c b/drivers/acpi/acpica/evglock.c
index 3393a73ca0d6..b78dc7c6d5d7 100644
--- a/drivers/acpi/acpica/evglock.c
+++ b/drivers/acpi/acpica/evglock.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c
index aa70154cf4fa..5ed064e8673c 100644
--- a/drivers/acpi/acpica/evgpe.c
+++ b/drivers/acpi/acpica/evgpe.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -114,17 +114,6 @@ acpi_status acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info)
 
         ACPI_FUNCTION_TRACE(ev_enable_gpe);
 
-        /*
-         * We will only allow a GPE to be enabled if it has either an associated
-         * method (_Lxx/_Exx) or a handler, or is using the implicit notify
-         * feature. Otherwise, the GPE will be immediately disabled by
-         * acpi_ev_gpe_dispatch the first time it fires.
-         */
-        if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
-            ACPI_GPE_DISPATCH_NONE) {
-                return_ACPI_STATUS(AE_NO_HANDLER);
-        }
-
         /* Clear the GPE (of stale events) */
 
         status = acpi_hw_clear_gpe(gpe_event_info);
@@ -339,7 +328,11 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list)
 {
         acpi_status status;
         struct acpi_gpe_block_info *gpe_block;
+        struct acpi_namespace_node *gpe_device;
         struct acpi_gpe_register_info *gpe_register_info;
+        struct acpi_gpe_event_info *gpe_event_info;
+        u32 gpe_number;
+        struct acpi_gpe_handler_info *gpe_handler_info;
         u32 int_status = ACPI_INTERRUPT_NOT_HANDLED;
         u8 enabled_status_byte;
         u32 status_reg;
@@ -367,6 +360,8 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list)
 
         gpe_block = gpe_xrupt_list->gpe_block_list_head;
         while (gpe_block) {
+                gpe_device = gpe_block->node;
+
                 /*
                  * Read all of the 8-bit GPE status and enable registers in this GPE
                  * block, saving all of them. Find all currently active GP events.
@@ -442,16 +437,68 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list)
 
                                 /* Examine one GPE bit */
 
+                                gpe_event_info =
+                                    &gpe_block->
+                                    event_info[((acpi_size) i *
+                                                ACPI_GPE_REGISTER_WIDTH) + j];
+                                gpe_number =
+                                    j + gpe_register_info->base_gpe_number;
+
                                 if (enabled_status_byte & (1 << j)) {
-                                        /*
-                                         * Found an active GPE. Dispatch the event to a handler
-                                         * or method.
-                                         */
-                                        int_status |=
-                                            acpi_ev_gpe_dispatch(gpe_block->
-                                                                 node,
-                                                                 &gpe_block->
-                                                                 event_info[((acpi_size) i * ACPI_GPE_REGISTER_WIDTH) + j], j + gpe_register_info->base_gpe_number);
+
+                                        /* Invoke global event handler if present */
+
+                                        acpi_gpe_count++;
+                                        if (acpi_gbl_global_event_handler) {
+                                                acpi_gbl_global_event_handler
+                                                    (ACPI_EVENT_TYPE_GPE,
+                                                     gpe_device, gpe_number,
+                                                     acpi_gbl_global_event_handler_context);
+                                        }
+
+                                        /* Found an active GPE */
+
+                                        if (ACPI_GPE_DISPATCH_TYPE
+                                            (gpe_event_info->flags) ==
+                                            ACPI_GPE_DISPATCH_RAW_HANDLER) {
+
+                                                /* Dispatch the event to a raw handler */
+
+                                                gpe_handler_info =
+                                                    gpe_event_info->dispatch.
+                                                    handler;
+
+                                                /*
+                                                 * There is no protection around the namespace node
+                                                 * and the GPE handler to ensure a safe destruction
+                                                 * because:
+                                                 * 1. The namespace node is expected to always
+                                                 *    exist after loading a table.
+                                                 * 2. The GPE handler is expected to be flushed by
+                                                 *    acpi_os_wait_events_complete() before the
+                                                 *    destruction.
+                                                 */
+                                                acpi_os_release_lock
+                                                    (acpi_gbl_gpe_lock, flags);
+                                                int_status |=
+                                                    gpe_handler_info->
+                                                    address(gpe_device,
+                                                            gpe_number,
+                                                            gpe_handler_info->
+                                                            context);
+                                                flags =
+                                                    acpi_os_acquire_lock
+                                                    (acpi_gbl_gpe_lock);
+                                        } else {
+                                                /*
+                                                 * Dispatch the event to a standard handler or
+                                                 * method.
+                                                 */
+                                                int_status |=
+                                                    acpi_ev_gpe_dispatch
+                                                    (gpe_device, gpe_event_info,
+                                                     gpe_number);
+                                        }
                                 }
                         }
                 }
@@ -484,52 +531,15 @@ unlock_and_exit:
 static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
 {
         struct acpi_gpe_event_info *gpe_event_info = context;
-        acpi_status status;
-        struct acpi_gpe_event_info *local_gpe_event_info;
+        acpi_status status = AE_OK;
         struct acpi_evaluate_info *info;
         struct acpi_gpe_notify_info *notify;
 
         ACPI_FUNCTION_TRACE(ev_asynch_execute_gpe_method);
 
-        /* Allocate a local GPE block */
-
-        local_gpe_event_info =
-            ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_event_info));
-        if (!local_gpe_event_info) {
-                ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY, "while handling a GPE"));
-                return_VOID;
-        }
-
-        status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
-        if (ACPI_FAILURE(status)) {
-                ACPI_FREE(local_gpe_event_info);
-                return_VOID;
-        }
-
-        /* Must revalidate the gpe_number/gpe_block */
-
-        if (!acpi_ev_valid_gpe_event(gpe_event_info)) {
-                status = acpi_ut_release_mutex(ACPI_MTX_EVENTS);
-                ACPI_FREE(local_gpe_event_info);
-                return_VOID;
-        }
-
-        /*
-         * Take a snapshot of the GPE info for this level - we copy the info to
-         * prevent a race condition with remove_handler/remove_block.
-         */
-        ACPI_MEMCPY(local_gpe_event_info, gpe_event_info,
-                    sizeof(struct acpi_gpe_event_info));
-
-        status = acpi_ut_release_mutex(ACPI_MTX_EVENTS);
-        if (ACPI_FAILURE(status)) {
-                ACPI_FREE(local_gpe_event_info);
-                return_VOID;
-        }
-
         /* Do the correct dispatch - normal method or implicit notify */
 
-        switch (local_gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) {
+        switch (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags)) {
         case ACPI_GPE_DISPATCH_NOTIFY:
                 /*
                  * Implicit notify.
@@ -542,7 +552,7 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
                  * June 2012: Expand implicit notify mechanism to support
                  * notifies on multiple device objects.
                  */
-                notify = local_gpe_event_info->dispatch.notify_list;
+                notify = gpe_event_info->dispatch.notify_list;
                 while (ACPI_SUCCESS(status) && notify) {
                         status =
                             acpi_ev_queue_notify_request(notify->device_node,
@@ -566,7 +576,7 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
                          * _Lxx/_Exx control method that corresponds to this GPE
                          */
                         info->prefix_node =
-                            local_gpe_event_info->dispatch.method_node;
+                            gpe_event_info->dispatch.method_node;
                         info->flags = ACPI_IGNORE_RETURN_VALUE;
 
                         status = acpi_ns_evaluate(info);
@@ -576,25 +586,27 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
                 if (ACPI_FAILURE(status)) {
                         ACPI_EXCEPTION((AE_INFO, status,
                                         "while evaluating GPE method [%4.4s]",
-                                        acpi_ut_get_node_name
-                                        (local_gpe_event_info->dispatch.
-                                         method_node)));
+                                        acpi_ut_get_node_name(gpe_event_info->
+                                                              dispatch.
+                                                              method_node)));
                 }
                 break;
 
         default:
 
-                return_VOID;    /* Should never happen */
+                goto error_exit;        /* Should never happen */
         }
 
         /* Defer enabling of GPE until all notify handlers are done */
 
         status = acpi_os_execute(OSL_NOTIFY_HANDLER,
-                                 acpi_ev_asynch_enable_gpe,
-                                 local_gpe_event_info);
-        if (ACPI_FAILURE(status)) {
-                ACPI_FREE(local_gpe_event_info);
+                                 acpi_ev_asynch_enable_gpe, gpe_event_info);
+        if (ACPI_SUCCESS(status)) {
+                return_VOID;
         }
+
+error_exit:
+        acpi_ev_asynch_enable_gpe(gpe_event_info);
         return_VOID;
 }
 
@@ -622,7 +634,6 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_enable_gpe(void *context)
         (void)acpi_ev_finish_gpe(gpe_event_info);
         acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
 
-        ACPI_FREE(gpe_event_info);
         return;
 }
 
@@ -692,15 +703,6 @@ acpi_ev_gpe_dispatch(struct acpi_namespace_node *gpe_device,
 
         ACPI_FUNCTION_TRACE(ev_gpe_dispatch);
 
-        /* Invoke global event handler if present */
-
-        acpi_gpe_count++;
-        if (acpi_gbl_global_event_handler) {
-                acpi_gbl_global_event_handler(ACPI_EVENT_TYPE_GPE, gpe_device,
-                                              gpe_number,
-                                              acpi_gbl_global_event_handler_context);
-        }
-
         /*
          * Always disable the GPE so that it does not keep firing before
          * any asynchronous activity completes (either from the execution
@@ -741,7 +743,7 @@ acpi_ev_gpe_dispatch(struct acpi_namespace_node *gpe_device,
          * If there is neither a handler nor a method, leave the GPE
          * disabled.
          */
-        switch (gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) {
+        switch (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags)) {
         case ACPI_GPE_DISPATCH_HANDLER:
 
                 /* Invoke the installed handler (at interrupt level) */
diff --git a/drivers/acpi/acpica/evgpeblk.c b/drivers/acpi/acpica/evgpeblk.c
index d86699eea33c..e0f24c504513 100644
--- a/drivers/acpi/acpica/evgpeblk.c
+++ b/drivers/acpi/acpica/evgpeblk.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -474,10 +474,12 @@ acpi_ev_initialize_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
                          * Ignore GPEs that have no corresponding _Lxx/_Exx method
                          * and GPEs that are used to wake the system
                          */
-                        if (((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
+                        if ((ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) ==
                              ACPI_GPE_DISPATCH_NONE)
-                            || ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK)
-                                == ACPI_GPE_DISPATCH_HANDLER)
+                            || (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) ==
+                                ACPI_GPE_DISPATCH_HANDLER)
+                            || (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) ==
+                                ACPI_GPE_DISPATCH_RAW_HANDLER)
                             || (gpe_event_info->flags & ACPI_GPE_CAN_WAKE)) {
                                 continue;
                         }
diff --git a/drivers/acpi/acpica/evgpeinit.c b/drivers/acpi/acpica/evgpeinit.c
index 7be928379879..8840296d5b20 100644
--- a/drivers/acpi/acpica/evgpeinit.c
+++ b/drivers/acpi/acpica/evgpeinit.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -401,15 +401,17 @@ acpi_ev_match_gpe_method(acpi_handle obj_handle,
                 return_ACPI_STATUS(AE_OK);
         }
 
-        if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
-            ACPI_GPE_DISPATCH_HANDLER) {
+        if ((ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) ==
+             ACPI_GPE_DISPATCH_HANDLER) ||
+            (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) ==
+             ACPI_GPE_DISPATCH_RAW_HANDLER)) {
 
                 /* If there is already a handler, ignore this GPE method */
 
                 return_ACPI_STATUS(AE_OK);
         }
 
-        if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
+        if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) ==
             ACPI_GPE_DISPATCH_METHOD) {
                 /*
                  * If there is already a method, ignore this method. But check
diff --git a/drivers/acpi/acpica/evgpeutil.c b/drivers/acpi/acpica/evgpeutil.c
index 17e4bbfdb096..3a958f3612fe 100644
--- a/drivers/acpi/acpica/evgpeutil.c
+++ b/drivers/acpi/acpica/evgpeutil.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -108,53 +108,6 @@ unlock_and_exit:
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_ev_valid_gpe_event
- *
- * PARAMETERS:  gpe_event_info              - Info for this GPE
- *
- * RETURN:      TRUE if the gpe_event is valid
- *
- * DESCRIPTION: Validate a GPE event. DO NOT CALL FROM INTERRUPT LEVEL.
- *              Should be called only when the GPE lists are semaphore locked
- *              and not subject to change.
- *
- ******************************************************************************/
-
-u8 acpi_ev_valid_gpe_event(struct acpi_gpe_event_info *gpe_event_info)
-{
-        struct acpi_gpe_xrupt_info *gpe_xrupt_block;
-        struct acpi_gpe_block_info *gpe_block;
-
-        ACPI_FUNCTION_ENTRY();
-
-        /* No need for spin lock since we are not changing any list elements */
-
-        /* Walk the GPE interrupt levels */
-
-        gpe_xrupt_block = acpi_gbl_gpe_xrupt_list_head;
-        while (gpe_xrupt_block) {
-                gpe_block = gpe_xrupt_block->gpe_block_list_head;
-
-                /* Walk the GPE blocks on this interrupt level */
-
-                while (gpe_block) {
-                        if ((&gpe_block->event_info[0] <= gpe_event_info) &&
-                            (&gpe_block->event_info[gpe_block->gpe_count] >
-                             gpe_event_info)) {
-                                return (TRUE);
-                        }
-
-                        gpe_block = gpe_block->next;
-                }
-
-                gpe_xrupt_block = gpe_xrupt_block->next;
-        }
-
-        return (FALSE);
-}
-
-/*******************************************************************************
- *
  * FUNCTION:    acpi_ev_get_gpe_device
  *
  * PARAMETERS:  GPE_WALK_CALLBACK
@@ -371,8 +324,10 @@ acpi_ev_delete_gpe_handlers(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
                                                                  ACPI_GPE_REGISTER_WIDTH)
                                                                 + j];
 
-                        if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
-                            ACPI_GPE_DISPATCH_HANDLER) {
+                        if ((ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) ==
+                             ACPI_GPE_DISPATCH_HANDLER) ||
+                            (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) ==
+                             ACPI_GPE_DISPATCH_RAW_HANDLER)) {
 
                                 /* Delete an installed handler block */
 
@@ -380,10 +335,8 @@ acpi_ev_delete_gpe_handlers(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
                                 gpe_event_info->dispatch.handler = NULL;
                                 gpe_event_info->flags &=
                                     ~ACPI_GPE_DISPATCH_MASK;
-                        } else
-                            if ((gpe_event_info->
-                                 flags & ACPI_GPE_DISPATCH_MASK) ==
-                                ACPI_GPE_DISPATCH_NOTIFY) {
+                        } else if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags)
+                                   == ACPI_GPE_DISPATCH_NOTIFY) {
 
                                 /* Delete the implicit notification device list */
 
diff --git a/drivers/acpi/acpica/evhandler.c b/drivers/acpi/acpica/evhandler.c
index 78ac29351c9e..74e8595f5a2b 100644
--- a/drivers/acpi/acpica/evhandler.c
+++ b/drivers/acpi/acpica/evhandler.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/evmisc.c b/drivers/acpi/acpica/evmisc.c
index 24ea3424981b..f7c9dfe7b990 100644
--- a/drivers/acpi/acpica/evmisc.c
+++ b/drivers/acpi/acpica/evmisc.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/evregion.c b/drivers/acpi/acpica/evregion.c
index 8eb8575e8c16..9abace3401f9 100644
--- a/drivers/acpi/acpica/evregion.c
+++ b/drivers/acpi/acpica/evregion.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/evrgnini.c b/drivers/acpi/acpica/evrgnini.c
index 1b148a440d67..da323390bb70 100644
--- a/drivers/acpi/acpica/evrgnini.c
+++ b/drivers/acpi/acpica/evrgnini.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/evsci.c b/drivers/acpi/acpica/evsci.c
index 29630e303829..0366703d2970 100644
--- a/drivers/acpi/acpica/evsci.c
+++ b/drivers/acpi/acpica/evsci.c
@@ -6,7 +6,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c
index 55a58f3ec8df..81f2d9e87fad 100644
--- a/drivers/acpi/acpica/evxface.c
+++ b/drivers/acpi/acpica/evxface.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -51,6 +51,16 @@
 
 #define _COMPONENT          ACPI_EVENTS
 ACPI_MODULE_NAME("evxface")
+#if (!ACPI_REDUCED_HARDWARE)
+/* Local prototypes */
+static acpi_status
+acpi_ev_install_gpe_handler(acpi_handle gpe_device,
+                            u32 gpe_number,
+                            u32 type,
+                            u8 is_raw_handler,
+                            acpi_gpe_handler address, void *context);
+
+#endif
 
 
 /*******************************************************************************
@@ -76,6 +86,7 @@ ACPI_MODULE_NAME("evxface")
  *              handlers.
  *
  ******************************************************************************/
+
 acpi_status
 acpi_install_notify_handler(acpi_handle device,
                             u32 handler_type,
@@ -717,32 +728,37 @@ ACPI_EXPORT_SYMBOL(acpi_remove_fixed_event_handler)
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_install_gpe_handler
+ * FUNCTION:    acpi_ev_install_gpe_handler
  *
  * PARAMETERS:  gpe_device      - Namespace node for the GPE (NULL for FADT
  *                                defined GPEs)
  *              gpe_number      - The GPE number within the GPE block
  *              type            - Whether this GPE should be treated as an
  *                                edge- or level-triggered interrupt.
+ *              is_raw_handler  - Whether this GPE should be handled using
+ *                                the special GPE handler mode.
  *              address         - Address of the handler
  *              context         - Value passed to the handler on each GPE
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Install a handler for a General Purpose Event.
+ * DESCRIPTION: Internal function to install a handler for a General Purpose
+ *              Event.
  *
  ******************************************************************************/
-acpi_status
-acpi_install_gpe_handler(acpi_handle gpe_device,
-                         u32 gpe_number,
-                         u32 type, acpi_gpe_handler address, void *context)
+static acpi_status
+acpi_ev_install_gpe_handler(acpi_handle gpe_device,
+                            u32 gpe_number,
+                            u32 type,
+                            u8 is_raw_handler,
+                            acpi_gpe_handler address, void *context)
 {
         struct acpi_gpe_event_info *gpe_event_info;
         struct acpi_gpe_handler_info *handler;
         acpi_status status;
         acpi_cpu_flags flags;
 
-        ACPI_FUNCTION_TRACE(acpi_install_gpe_handler);
+        ACPI_FUNCTION_TRACE(ev_install_gpe_handler);
 
         /* Parameter validation */
 
@@ -775,8 +791,10 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
 
         /* Make sure that there isn't a handler there already */
 
-        if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
-            ACPI_GPE_DISPATCH_HANDLER) {
+        if ((ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) ==
+             ACPI_GPE_DISPATCH_HANDLER) ||
+            (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) ==
+             ACPI_GPE_DISPATCH_RAW_HANDLER)) {
                 status = AE_ALREADY_EXISTS;
                 goto free_and_exit;
         }
@@ -793,9 +811,10 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
          * automatically during initialization, in which case it has to be
          * disabled now to avoid spurious execution of the handler.
          */
-        if (((handler->original_flags & ACPI_GPE_DISPATCH_METHOD) ||
-             (handler->original_flags & ACPI_GPE_DISPATCH_NOTIFY)) &&
-            gpe_event_info->runtime_count) {
+        if (((ACPI_GPE_DISPATCH_TYPE(handler->original_flags) ==
+              ACPI_GPE_DISPATCH_METHOD) ||
+             (ACPI_GPE_DISPATCH_TYPE(handler->original_flags) ==
+              ACPI_GPE_DISPATCH_NOTIFY)) && gpe_event_info->runtime_count) {
                 handler->originally_enabled = TRUE;
                 (void)acpi_ev_remove_gpe_reference(gpe_event_info);
 
@@ -816,7 +835,10 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
 
         gpe_event_info->flags &=
             ~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK);
-        gpe_event_info->flags |= (u8)(type | ACPI_GPE_DISPATCH_HANDLER);
+        gpe_event_info->flags |=
+            (u8)(type |
+                 (is_raw_handler ? ACPI_GPE_DISPATCH_RAW_HANDLER :
+                  ACPI_GPE_DISPATCH_HANDLER));
 
         acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
 
@@ -830,10 +852,78 @@ free_and_exit:
         goto unlock_and_exit;
 }
 
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_install_gpe_handler
+ *
+ * PARAMETERS:  gpe_device      - Namespace node for the GPE (NULL for FADT
+ *                                defined GPEs)
+ *              gpe_number      - The GPE number within the GPE block
+ *              type            - Whether this GPE should be treated as an
+ *                                edge- or level-triggered interrupt.
+ *              address         - Address of the handler
+ *              context         - Value passed to the handler on each GPE
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Install a handler for a General Purpose Event.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_install_gpe_handler(acpi_handle gpe_device,
+                         u32 gpe_number,
+                         u32 type, acpi_gpe_handler address, void *context)
+{
+        acpi_status status;
+
+        ACPI_FUNCTION_TRACE(acpi_install_gpe_handler);
+
+        status =
+            acpi_ev_install_gpe_handler(gpe_device, gpe_number, type, FALSE,
+                                        address, context);
+
+        return_ACPI_STATUS(status);
+}
+
 ACPI_EXPORT_SYMBOL(acpi_install_gpe_handler)
 
 /*******************************************************************************
  *
+ * FUNCTION:    acpi_install_gpe_raw_handler
+ *
+ * PARAMETERS:  gpe_device      - Namespace node for the GPE (NULL for FADT
+ *                                defined GPEs)
+ *              gpe_number      - The GPE number within the GPE block
+ *              type            - Whether this GPE should be treated as an
+ *                                edge- or level-triggered interrupt.
+ *              address         - Address of the handler
+ *              context         - Value passed to the handler on each GPE
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Install a handler for a General Purpose Event.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_install_gpe_raw_handler(acpi_handle gpe_device,
+                             u32 gpe_number,
+                             u32 type, acpi_gpe_handler address, void *context)
+{
+        acpi_status status;
+
+        ACPI_FUNCTION_TRACE(acpi_install_gpe_raw_handler);
+
+        status = acpi_ev_install_gpe_handler(gpe_device, gpe_number, type, TRUE,
+                                             address, context);
+
+        return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_install_gpe_raw_handler)
+
+/*******************************************************************************
+ *
  * FUNCTION:    acpi_remove_gpe_handler
  *
  * PARAMETERS:  gpe_device      - Namespace node for the GPE (NULL for FADT
@@ -880,8 +970,10 @@ acpi_remove_gpe_handler(acpi_handle gpe_device,
 
         /* Make sure that a handler is indeed installed */
 
-        if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) !=
-            ACPI_GPE_DISPATCH_HANDLER) {
+        if ((ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) !=
+             ACPI_GPE_DISPATCH_HANDLER) &&
+            (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) !=
+             ACPI_GPE_DISPATCH_RAW_HANDLER)) {
                 status = AE_NOT_EXIST;
                 goto unlock_and_exit;
         }
@@ -896,6 +988,7 @@ acpi_remove_gpe_handler(acpi_handle gpe_device,
         /* Remove the handler */
 
         handler = gpe_event_info->dispatch.handler;
+        gpe_event_info->dispatch.handler = NULL;
 
         /* Restore Method node (if any), set dispatch flags */
 
@@ -909,9 +1002,10 @@ acpi_remove_gpe_handler(acpi_handle gpe_device,
          * enabled, it should be enabled at this point to restore the
          * post-initialization configuration.
          */
-        if (((handler->original_flags & ACPI_GPE_DISPATCH_METHOD) ||
-             (handler->original_flags & ACPI_GPE_DISPATCH_NOTIFY)) &&
-            handler->originally_enabled) {
+        if (((ACPI_GPE_DISPATCH_TYPE(handler->original_flags) ==
+              ACPI_GPE_DISPATCH_METHOD) ||
+             (ACPI_GPE_DISPATCH_TYPE(handler->original_flags) ==
+              ACPI_GPE_DISPATCH_NOTIFY)) && handler->originally_enabled) {
                 (void)acpi_ev_add_gpe_reference(gpe_event_info);
         }
 
diff --git a/drivers/acpi/acpica/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c
index bb8cbf5961bf..df06a23c4197 100644
--- a/drivers/acpi/acpica/evxfevnt.c
+++ b/drivers/acpi/acpica/evxfevnt.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/evxfgpe.c b/drivers/acpi/acpica/evxfgpe.c
index e889a5304abd..70eb47e3d724 100644
--- a/drivers/acpi/acpica/evxfgpe.c
+++ b/drivers/acpi/acpica/evxfgpe.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -132,7 +132,7 @@ acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number)
          */
         gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
         if (gpe_event_info) {
-                if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) !=
+                if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) !=
                     ACPI_GPE_DISPATCH_NONE) {
                         status = acpi_ev_add_gpe_reference(gpe_event_info);
                 } else {
@@ -183,6 +183,77 @@ acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number)
 
 ACPI_EXPORT_SYMBOL(acpi_disable_gpe)
 
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_set_gpe
+ *
+ * PARAMETERS:  gpe_device          - Parent GPE Device. NULL for GPE0/GPE1
+ *              gpe_number          - GPE level within the GPE block
+ *              action              - ACPI_GPE_ENABLE or ACPI_GPE_DISABLE
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Enable or disable an individual GPE. This function bypasses
+ *              the reference count mechanism used in the acpi_enable_gpe(),
+ *              acpi_disable_gpe() interfaces.
+ *              This API is typically used by the GPE raw handler mode driver
+ *              to switch between the polling mode and the interrupt mode after
+ *              the driver has enabled the GPE.
+ *              The APIs should be invoked in this order:
+ *               acpi_enable_gpe()            <- Ensure the reference count > 0
+ *               acpi_set_gpe(ACPI_GPE_DISABLE) <- Enter polling mode
+ *               acpi_set_gpe(ACPI_GPE_ENABLE) <- Leave polling mode
+ *               acpi_disable_gpe()           <- Decrease the reference count
+ *
+ * Note: If a GPE is shared by 2 silicon components, then both the drivers
+ *       should support GPE polling mode or disabling the GPE for long period
+ *       for one driver may break the other. So use it with care since all
+ *       firmware _Lxx/_Exx handlers currently rely on the GPE interrupt mode.
+ *
+ ******************************************************************************/
+acpi_status acpi_set_gpe(acpi_handle gpe_device, u32 gpe_number, u8 action)
+{
+        struct acpi_gpe_event_info *gpe_event_info;
+        acpi_status status;
+        acpi_cpu_flags flags;
+
+        ACPI_FUNCTION_TRACE(acpi_set_gpe);
+
+        flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
+
+        /* Ensure that we have a valid GPE number */
+
+        gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
+        if (!gpe_event_info) {
+                status = AE_BAD_PARAMETER;
+                goto unlock_and_exit;
+        }
+
+        /* Perform the action */
+
+        switch (action) {
+        case ACPI_GPE_ENABLE:
+
+                status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_ENABLE);
+                break;
+
+        case ACPI_GPE_DISABLE:
+
+                status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_DISABLE);
+                break;
+
+        default:
+
+                status = AE_BAD_PARAMETER;
+                break;
+        }
+
+unlock_and_exit:
+        acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
+        return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_set_gpe)
 
 /*******************************************************************************
  *
@@ -313,7 +384,7 @@ acpi_setup_gpe_for_wake(acpi_handle wake_device,
          * known as an "implicit notify". Note: The GPE is assumed to be
          * level-triggered (for windows compatibility).
          */
-        if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
+        if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) ==
             ACPI_GPE_DISPATCH_NONE) {
                 /*
                  * This is the first device for implicit notify on this GPE.
@@ -327,7 +398,7 @@ acpi_setup_gpe_for_wake(acpi_handle wake_device,
          * If we already have an implicit notify on this GPE, add
          * this device to the notify list.
          */
-        if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
+        if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) ==
             ACPI_GPE_DISPATCH_NOTIFY) {
 
                 /* Ensure that the device is not already in the list */
@@ -530,6 +601,49 @@ unlock_and_exit:
 
 ACPI_EXPORT_SYMBOL(acpi_get_gpe_status)
 
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_finish_gpe
+ *
+ * PARAMETERS:  gpe_device          - Namespace node for the GPE Block
+ *                                    (NULL for FADT defined GPEs)
+ *              gpe_number          - GPE level within the GPE block
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Clear and conditionally reenable a GPE. This completes the GPE
+ *              processing. Intended for use by asynchronous host-installed
+ *              GPE handlers. The GPE is only reenabled if the enable_for_run bit
+ *              is set in the GPE info.
+ *
+ ******************************************************************************/
+acpi_status acpi_finish_gpe(acpi_handle gpe_device, u32 gpe_number)
+{
+        struct acpi_gpe_event_info *gpe_event_info;
+        acpi_status status;
+        acpi_cpu_flags flags;
+
+        ACPI_FUNCTION_TRACE(acpi_finish_gpe);
+
+        flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
+
+        /* Ensure that we have a valid GPE number */
+
+        gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
+        if (!gpe_event_info) {
+                status = AE_BAD_PARAMETER;
+                goto unlock_and_exit;
+        }
+
+        status = acpi_ev_finish_gpe(gpe_event_info);
+
+unlock_and_exit:
+        acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
+        return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_finish_gpe)
+
 /******************************************************************************
  *
  * FUNCTION:    acpi_disable_all_gpes
@@ -604,7 +718,6 @@ ACPI_EXPORT_SYMBOL(acpi_enable_all_runtime_gpes)
  *              all GPE blocks.
  *
  ******************************************************************************/
-
 acpi_status acpi_enable_all_wakeup_gpes(void)
 {
         acpi_status status;
diff --git a/drivers/acpi/acpica/evxfregn.c b/drivers/acpi/acpica/evxfregn.c
index 2d6f187939c7..f21afbab03f7 100644
--- a/drivers/acpi/acpica/evxfregn.c
+++ b/drivers/acpi/acpica/evxfregn.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exconfig.c b/drivers/acpi/acpica/exconfig.c
index 7d2949420db7..6e0df2b9d5a4 100644
--- a/drivers/acpi/acpica/exconfig.c
+++ b/drivers/acpi/acpica/exconfig.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exconvrt.c b/drivers/acpi/acpica/exconvrt.c
index c545386fee96..89a976b4ccf2 100644
--- a/drivers/acpi/acpica/exconvrt.c
+++ b/drivers/acpi/acpica/exconvrt.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/excreate.c b/drivers/acpi/acpica/excreate.c
index 95d23dabcfbb..aaeea4840aaa 100644
--- a/drivers/acpi/acpica/excreate.c
+++ b/drivers/acpi/acpica/excreate.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exdebug.c b/drivers/acpi/acpica/exdebug.c
index 6fbfad47518c..e67d0aca3fe6 100644
--- a/drivers/acpi/acpica/exdebug.c
+++ b/drivers/acpi/acpica/exdebug.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exdump.c b/drivers/acpi/acpica/exdump.c
index 0f23c3f2678e..7c213b6b6472 100644
--- a/drivers/acpi/acpica/exdump.c
+++ b/drivers/acpi/acpica/exdump.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exfield.c b/drivers/acpi/acpica/exfield.c
index b994845ed359..c161dd974f74 100644
--- a/drivers/acpi/acpica/exfield.c
+++ b/drivers/acpi/acpica/exfield.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exfldio.c b/drivers/acpi/acpica/exfldio.c
index 1d1b27a96c5b..49479927e7f7 100644
--- a/drivers/acpi/acpica/exfldio.c
+++ b/drivers/acpi/acpica/exfldio.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exmisc.c b/drivers/acpi/acpica/exmisc.c
index 2207e624f538..b56fc9d6f48e 100644
--- a/drivers/acpi/acpica/exmisc.c
+++ b/drivers/acpi/acpica/exmisc.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exmutex.c b/drivers/acpi/acpica/exmutex.c
index b49ea2a95f4f..472030f2b5bb 100644
--- a/drivers/acpi/acpica/exmutex.c
+++ b/drivers/acpi/acpica/exmutex.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exnames.c b/drivers/acpi/acpica/exnames.c
index dbb03b544e8c..453b00c30177 100644
--- a/drivers/acpi/acpica/exnames.c
+++ b/drivers/acpi/acpica/exnames.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exoparg1.c b/drivers/acpi/acpica/exoparg1.c
index 1b8e94104407..77930683ab7d 100644
--- a/drivers/acpi/acpica/exoparg1.c
+++ b/drivers/acpi/acpica/exoparg1.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exoparg2.c b/drivers/acpi/acpica/exoparg2.c
index 2ede656ee26a..fcc618aa2061 100644
--- a/drivers/acpi/acpica/exoparg2.c
+++ b/drivers/acpi/acpica/exoparg2.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exoparg3.c b/drivers/acpi/acpica/exoparg3.c
index 363767cf01e5..b813fed95e56 100644
--- a/drivers/acpi/acpica/exoparg3.c
+++ b/drivers/acpi/acpica/exoparg3.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exoparg6.c b/drivers/acpi/acpica/exoparg6.c
index 29e9e99f7fe3..c930edda3f65 100644
--- a/drivers/acpi/acpica/exoparg6.c
+++ b/drivers/acpi/acpica/exoparg6.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exprep.c b/drivers/acpi/acpica/exprep.c
index 118e942005e5..4c2836dc825b 100644
--- a/drivers/acpi/acpica/exprep.c
+++ b/drivers/acpi/acpica/exprep.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exregion.c b/drivers/acpi/acpica/exregion.c
index cd5288a257a9..0fe188e238ef 100644
--- a/drivers/acpi/acpica/exregion.c
+++ b/drivers/acpi/acpica/exregion.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exresnte.c b/drivers/acpi/acpica/exresnte.c
index ab060261b43e..c7e3b929aa85 100644
--- a/drivers/acpi/acpica/exresnte.c
+++ b/drivers/acpi/acpica/exresnte.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exresolv.c b/drivers/acpi/acpica/exresolv.c
index 3cde553bcbe1..b6b7f3af29e4 100644
--- a/drivers/acpi/acpica/exresolv.c
+++ b/drivers/acpi/acpica/exresolv.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exresop.c b/drivers/acpi/acpica/exresop.c
index 3af8de3fcea4..d2964af9ad4d 100644
--- a/drivers/acpi/acpica/exresop.c
+++ b/drivers/acpi/acpica/exresop.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exstore.c b/drivers/acpi/acpica/exstore.c
index daf49f7ea311..a7eee2400ce0 100644
--- a/drivers/acpi/acpica/exstore.c
+++ b/drivers/acpi/acpica/exstore.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exstoren.c b/drivers/acpi/acpica/exstoren.c
index 04bd16c08f9e..3101607b4efe 100644
--- a/drivers/acpi/acpica/exstoren.c
+++ b/drivers/acpi/acpica/exstoren.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exstorob.c b/drivers/acpi/acpica/exstorob.c
index fd11018b0168..6fa3c8d8fc5f 100644
--- a/drivers/acpi/acpica/exstorob.c
+++ b/drivers/acpi/acpica/exstorob.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exsystem.c b/drivers/acpi/acpica/exsystem.c
index f7da64123ed5..05450656fe3d 100644
--- a/drivers/acpi/acpica/exsystem.c
+++ b/drivers/acpi/acpica/exsystem.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/exutils.c b/drivers/acpi/acpica/exutils.c
index d9d72dff2a76..3f4225e95d93 100644
--- a/drivers/acpi/acpica/exutils.c
+++ b/drivers/acpi/acpica/exutils.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/hwacpi.c b/drivers/acpi/acpica/hwacpi.c
index 1e66d960fc11..e5c5949f9081 100644
--- a/drivers/acpi/acpica/hwacpi.c
+++ b/drivers/acpi/acpica/hwacpi.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/hwesleep.c b/drivers/acpi/acpica/hwesleep.c
index 858fdd6be598..e5599f610808 100644
--- a/drivers/acpi/acpica/hwesleep.c
+++ b/drivers/acpi/acpica/hwesleep.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/hwgpe.c b/drivers/acpi/acpica/hwgpe.c
index 494027f5c067..84bc550f4f1d 100644
--- a/drivers/acpi/acpica/hwgpe.c
+++ b/drivers/acpi/acpica/hwgpe.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -54,6 +54,10 @@ acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
                                 struct acpi_gpe_block_info *gpe_block,
                                 void *context);
 
+static acpi_status
+acpi_hw_gpe_enable_write(u8 enable_mask,
+                         struct acpi_gpe_register_info *gpe_register_info);
+
 /******************************************************************************
  *
  * FUNCTION:    acpi_hw_get_gpe_register_bit
@@ -146,7 +150,7 @@ acpi_hw_low_set_gpe(struct acpi_gpe_event_info *gpe_event_info, u32 action)
 
         status = acpi_hw_write(enable_mask, &gpe_register_info->enable_address);
         if (ACPI_SUCCESS(status) && (action & ACPI_GPE_SAVE_MASK)) {
-                gpe_register_info->enable_mask = enable_mask;
+                gpe_register_info->enable_mask = (u8)enable_mask;
         }
         return (status);
 }
@@ -221,7 +225,7 @@ acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info,
 
         /* GPE currently handled? */
 
-        if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) !=
+        if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) !=
             ACPI_GPE_DISPATCH_NONE) {
                 local_event_status |= ACPI_EVENT_FLAG_HAS_HANDLER;
         }
diff --git a/drivers/acpi/acpica/hwpci.c b/drivers/acpi/acpica/hwpci.c
index 6aade8e1d2a1..c5214dec4988 100644
--- a/drivers/acpi/acpica/hwpci.c
+++ b/drivers/acpi/acpica/hwpci.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/hwregs.c b/drivers/acpi/acpica/hwregs.c
index a4c34d2c556b..3cf77afd142c 100644
--- a/drivers/acpi/acpica/hwregs.c
+++ b/drivers/acpi/acpica/hwregs.c
@@ -6,7 +6,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c
index d590693eb54e..7d21cae6d602 100644
--- a/drivers/acpi/acpica/hwsleep.c
+++ b/drivers/acpi/acpica/hwsleep.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/hwtimer.c b/drivers/acpi/acpica/hwtimer.c
index 76ab5c1a814e..675c709a300b 100644
--- a/drivers/acpi/acpica/hwtimer.c
+++ b/drivers/acpi/acpica/hwtimer.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/hwvalid.c b/drivers/acpi/acpica/hwvalid.c
index 6b919127cd9d..2bd33fe56cb3 100644
--- a/drivers/acpi/acpica/hwvalid.c
+++ b/drivers/acpi/acpica/hwvalid.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/hwxface.c b/drivers/acpi/acpica/hwxface.c
index 96d007df65ec..5f97468df8ff 100644
--- a/drivers/acpi/acpica/hwxface.c
+++ b/drivers/acpi/acpica/hwxface.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/hwxfsleep.c b/drivers/acpi/acpica/hwxfsleep.c
index 6921c7f3d208..3b3767698827 100644
--- a/drivers/acpi/acpica/hwxfsleep.c
+++ b/drivers/acpi/acpica/hwxfsleep.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsaccess.c b/drivers/acpi/acpica/nsaccess.c
index f1249e3463be..24fa19a76d70 100644
--- a/drivers/acpi/acpica/nsaccess.c
+++ b/drivers/acpi/acpica/nsaccess.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsalloc.c b/drivers/acpi/acpica/nsalloc.c
index 607eb9e5150d..e107f929d9cf 100644
--- a/drivers/acpi/acpica/nsalloc.c
+++ b/drivers/acpi/acpica/nsalloc.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsarguments.c b/drivers/acpi/acpica/nsarguments.c
index 80fcfc8c9c1b..5d347a71bd0b 100644
--- a/drivers/acpi/acpica/nsarguments.c
+++ b/drivers/acpi/acpica/nsarguments.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsconvert.c b/drivers/acpi/acpica/nsconvert.c
index b55642c4ee58..1a8b39c8d969 100644
--- a/drivers/acpi/acpica/nsconvert.c
+++ b/drivers/acpi/acpica/nsconvert.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsdump.c b/drivers/acpi/acpica/nsdump.c
index 3d88ef4a3e0d..80f097eb7381 100644
--- a/drivers/acpi/acpica/nsdump.c
+++ b/drivers/acpi/acpica/nsdump.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsdumpdv.c b/drivers/acpi/acpica/nsdumpdv.c
index 42d37109aa5d..7dc367e6fe09 100644
--- a/drivers/acpi/acpica/nsdumpdv.c
+++ b/drivers/acpi/acpica/nsdumpdv.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nseval.c b/drivers/acpi/acpica/nseval.c
index e634a05974db..7bcc68f57afa 100644
--- a/drivers/acpi/acpica/nseval.c
+++ b/drivers/acpi/acpica/nseval.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsinit.c b/drivers/acpi/acpica/nsinit.c
index a3fb7e4c0809..4a85c4517988 100644
--- a/drivers/acpi/acpica/nsinit.c
+++ b/drivers/acpi/acpica/nsinit.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsload.c b/drivers/acpi/acpica/nsload.c
index 7c9d0181f341..bd6cd4a81316 100644
--- a/drivers/acpi/acpica/nsload.c
+++ b/drivers/acpi/acpica/nsload.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsnames.c b/drivers/acpi/acpica/nsnames.c
index 7eee0a6f02f6..d293d9748036 100644
--- a/drivers/acpi/acpica/nsnames.c
+++ b/drivers/acpi/acpica/nsnames.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsobject.c b/drivers/acpi/acpica/nsobject.c
index a42ee9d6970d..677bc9330e64 100644
--- a/drivers/acpi/acpica/nsobject.c
+++ b/drivers/acpi/acpica/nsobject.c
@@ -6,7 +6,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsparse.c b/drivers/acpi/acpica/nsparse.c
index e83cff31754b..c95a119767b5 100644
--- a/drivers/acpi/acpica/nsparse.c
+++ b/drivers/acpi/acpica/nsparse.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nspredef.c b/drivers/acpi/acpica/nspredef.c
index 392910ffbed9..0eb54315b4be 100644
--- a/drivers/acpi/acpica/nspredef.c
+++ b/drivers/acpi/acpica/nspredef.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsprepkg.c b/drivers/acpi/acpica/nsprepkg.c
index 1b13b921dda9..8b79958b7aca 100644
--- a/drivers/acpi/acpica/nsprepkg.c
+++ b/drivers/acpi/acpica/nsprepkg.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsrepair.c b/drivers/acpi/acpica/nsrepair.c
index 7e417aa5c91e..151fcd95ba84 100644
--- a/drivers/acpi/acpica/nsrepair.c
+++ b/drivers/acpi/acpica/nsrepair.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsrepair2.c b/drivers/acpi/acpica/nsrepair2.c
index b09e6bef72b8..c30672d23878 100644
--- a/drivers/acpi/acpica/nsrepair2.c
+++ b/drivers/acpi/acpica/nsrepair2.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nssearch.c b/drivers/acpi/acpica/nssearch.c
index af1cc42a8aa1..4a9d4a66016e 100644
--- a/drivers/acpi/acpica/nssearch.c
+++ b/drivers/acpi/acpica/nssearch.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsutils.c b/drivers/acpi/acpica/nsutils.c
index 4a5e3f5c0ff7..6ad02008c0c2 100644
--- a/drivers/acpi/acpica/nsutils.c
+++ b/drivers/acpi/acpica/nsutils.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nswalk.c b/drivers/acpi/acpica/nswalk.c
index 4758a1f2ce22..c68609a2bc1b 100644
--- a/drivers/acpi/acpica/nswalk.c
+++ b/drivers/acpi/acpica/nswalk.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsxfeval.c b/drivers/acpi/acpica/nsxfeval.c
index 4bd558bf10d2..b6030a2deee1 100644
--- a/drivers/acpi/acpica/nsxfeval.c
+++ b/drivers/acpi/acpica/nsxfeval.c
@@ -6,7 +6,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsxfname.c b/drivers/acpi/acpica/nsxfname.c
index 8c6c11ce9760..d66c326485d8 100644
--- a/drivers/acpi/acpica/nsxfname.c
+++ b/drivers/acpi/acpica/nsxfname.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/nsxfobj.c b/drivers/acpi/acpica/nsxfobj.c
index 51a83298c18d..793383501f81 100644
--- a/drivers/acpi/acpica/nsxfobj.c
+++ b/drivers/acpi/acpica/nsxfobj.c
@@ -6,7 +6,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/psargs.c b/drivers/acpi/acpica/psargs.c
index 314d314340ae..6d038770577b 100644
--- a/drivers/acpi/acpica/psargs.c
+++ b/drivers/acpi/acpica/psargs.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/psloop.c b/drivers/acpi/acpica/psloop.c
index b058e2390fdd..90437227d790 100644
--- a/drivers/acpi/acpica/psloop.c
+++ b/drivers/acpi/acpica/psloop.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/psobject.c b/drivers/acpi/acpica/psobject.c
index a6885077d59e..2f5ddd806c58 100644
--- a/drivers/acpi/acpica/psobject.c
+++ b/drivers/acpi/acpica/psobject.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/psopcode.c b/drivers/acpi/acpica/psopcode.c
index 1755d2ac5656..1af4a405e351 100644
--- a/drivers/acpi/acpica/psopcode.c
+++ b/drivers/acpi/acpica/psopcode.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/psopinfo.c b/drivers/acpi/acpica/psopinfo.c
index 0d8d37ffd04d..e18e7c47f482 100644
--- a/drivers/acpi/acpica/psopinfo.c
+++ b/drivers/acpi/acpica/psopinfo.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/psparse.c b/drivers/acpi/acpica/psparse.c
index 6d27b597394e..a555f7f7b9a2 100644
--- a/drivers/acpi/acpica/psparse.c
+++ b/drivers/acpi/acpica/psparse.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/psscope.c b/drivers/acpi/acpica/psscope.c
index 32d250feea21..9d669cc6cb62 100644
--- a/drivers/acpi/acpica/psscope.c
+++ b/drivers/acpi/acpica/psscope.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/pstree.c b/drivers/acpi/acpica/pstree.c
index 0b64181e7720..89984f30addc 100644
--- a/drivers/acpi/acpica/pstree.c
+++ b/drivers/acpi/acpica/pstree.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/psutils.c b/drivers/acpi/acpica/psutils.c
index 3cd48802eede..960505ab409a 100644
--- a/drivers/acpi/acpica/psutils.c
+++ b/drivers/acpi/acpica/psutils.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/pswalk.c b/drivers/acpi/acpica/pswalk.c
index 9cb07e1e76d9..ba5f69171288 100644
--- a/drivers/acpi/acpica/pswalk.c
+++ b/drivers/acpi/acpica/pswalk.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/psxface.c b/drivers/acpi/acpica/psxface.c
index e135acaa5e1c..841a5ea06094 100644
--- a/drivers/acpi/acpica/psxface.c
+++ b/drivers/acpi/acpica/psxface.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/rsaddr.c b/drivers/acpi/acpica/rsaddr.c
index 94a3a057042c..66d406e8fe36 100644
--- a/drivers/acpi/acpica/rsaddr.c
+++ b/drivers/acpi/acpica/rsaddr.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/rscalc.c b/drivers/acpi/acpica/rscalc.c
index 689556744b03..cb739a694931 100644
--- a/drivers/acpi/acpica/rscalc.c
+++ b/drivers/acpi/acpica/rscalc.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/rscreate.c b/drivers/acpi/acpica/rscreate.c
index 049d9c22a0f9..15434e4c9b34 100644
--- a/drivers/acpi/acpica/rscreate.c
+++ b/drivers/acpi/acpica/rscreate.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/rsdump.c b/drivers/acpi/acpica/rsdump.c
index c3c56b5a9788..1539394c8c52 100644
--- a/drivers/acpi/acpica/rsdump.c
+++ b/drivers/acpi/acpica/rsdump.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/rsdumpinfo.c b/drivers/acpi/acpica/rsdumpinfo.c
index 6ba7ad5faa9c..b29d9ec63d1b 100644
--- a/drivers/acpi/acpica/rsdumpinfo.c
+++ b/drivers/acpi/acpica/rsdumpinfo.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/rsinfo.c b/drivers/acpi/acpica/rsinfo.c
index 9d3f8a9a24bd..edecfc675979 100644
--- a/drivers/acpi/acpica/rsinfo.c
+++ b/drivers/acpi/acpica/rsinfo.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/rsio.c b/drivers/acpi/acpica/rsio.c
index 19d64873290a..5adba018bab0 100644
--- a/drivers/acpi/acpica/rsio.c
+++ b/drivers/acpi/acpica/rsio.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/rsirq.c b/drivers/acpi/acpica/rsirq.c
index 3461f7db26df..07cfa70a475b 100644
--- a/drivers/acpi/acpica/rsirq.c
+++ b/drivers/acpi/acpica/rsirq.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/rslist.c b/drivers/acpi/acpica/rslist.c
index 77291293af64..50d5be2ee062 100644
--- a/drivers/acpi/acpica/rslist.c
+++ b/drivers/acpi/acpica/rslist.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/rsmemory.c b/drivers/acpi/acpica/rsmemory.c
index eab4483ff5f8..c6b80862030e 100644
--- a/drivers/acpi/acpica/rsmemory.c
+++ b/drivers/acpi/acpica/rsmemory.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/rsmisc.c b/drivers/acpi/acpica/rsmisc.c
index 41eea4bc089c..1fe49d223663 100644
--- a/drivers/acpi/acpica/rsmisc.c
+++ b/drivers/acpi/acpica/rsmisc.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/rsserial.c b/drivers/acpi/acpica/rsserial.c
index 9e8407223d95..4c8c6fe6ea74 100644
--- a/drivers/acpi/acpica/rsserial.c
+++ b/drivers/acpi/acpica/rsserial.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/rsutils.c b/drivers/acpi/acpica/rsutils.c
index 897a5ceb0420..ece3cd60cc6a 100644
--- a/drivers/acpi/acpica/rsutils.c
+++ b/drivers/acpi/acpica/rsutils.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/rsxface.c b/drivers/acpi/acpica/rsxface.c
index 295287891174..8e6276df0226 100644
--- a/drivers/acpi/acpica/rsxface.c
+++ b/drivers/acpi/acpica/rsxface.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/tbdata.c b/drivers/acpi/acpica/tbdata.c
index f499c10ceb4a..6a144957aadd 100644
--- a/drivers/acpi/acpica/tbdata.c
+++ b/drivers/acpi/acpica/tbdata.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/tbfadt.c b/drivers/acpi/acpica/tbfadt.c
index 41519a958083..7d2486005e3f 100644
--- a/drivers/acpi/acpica/tbfadt.c
+++ b/drivers/acpi/acpica/tbfadt.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/tbfind.c b/drivers/acpi/acpica/tbfind.c
index cb947700206c..0b879fcfef67 100644
--- a/drivers/acpi/acpica/tbfind.c
+++ b/drivers/acpi/acpica/tbfind.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/tbinstal.c b/drivers/acpi/acpica/tbinstal.c
index 755b90c40ddf..9bad45e63a45 100644
--- a/drivers/acpi/acpica/tbinstal.c
+++ b/drivers/acpi/acpica/tbinstal.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/tbprint.c b/drivers/acpi/acpica/tbprint.c
index df3bb20ea325..ef16c06e5091 100644
--- a/drivers/acpi/acpica/tbprint.c
+++ b/drivers/acpi/acpica/tbprint.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c
index 6b1ca9991b90..6559a58439c5 100644
--- a/drivers/acpi/acpica/tbutils.c
+++ b/drivers/acpi/acpica/tbutils.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/tbxface.c b/drivers/acpi/acpica/tbxface.c
index 0f9dd80b1cdd..60e94f87f27a 100644
--- a/drivers/acpi/acpica/tbxface.c
+++ b/drivers/acpi/acpica/tbxface.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/tbxfload.c b/drivers/acpi/acpica/tbxfload.c
index ab5308b81aa8..aadb3002a2dd 100644
--- a/drivers/acpi/acpica/tbxfload.c
+++ b/drivers/acpi/acpica/tbxfload.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/tbxfroot.c b/drivers/acpi/acpica/tbxfroot.c
index 43a54af2b548..eac52cf14f1a 100644
--- a/drivers/acpi/acpica/tbxfroot.c
+++ b/drivers/acpi/acpica/tbxfroot.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utaddress.c b/drivers/acpi/acpica/utaddress.c
index a1acec9d2ef3..1279f50da757 100644
--- a/drivers/acpi/acpica/utaddress.c
+++ b/drivers/acpi/acpica/utaddress.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utalloc.c b/drivers/acpi/acpica/utalloc.c
index efac83c606dc..61d8f6d186d1 100644
--- a/drivers/acpi/acpica/utalloc.c
+++ b/drivers/acpi/acpica/utalloc.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utbuffer.c b/drivers/acpi/acpica/utbuffer.c
index 038ea887f562..242bd071f007 100644
--- a/drivers/acpi/acpica/utbuffer.c
+++ b/drivers/acpi/acpica/utbuffer.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utcache.c b/drivers/acpi/acpica/utcache.c
index 78fde0aac487..eacc5eee362e 100644
--- a/drivers/acpi/acpica/utcache.c
+++ b/drivers/acpi/acpica/utcache.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utcopy.c b/drivers/acpi/acpica/utcopy.c
index ff601c0f7c7a..c37ec5035f4c 100644
--- a/drivers/acpi/acpica/utcopy.c
+++ b/drivers/acpi/acpica/utcopy.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utdebug.c b/drivers/acpi/acpica/utdebug.c
index e516254c63b2..57078e3ea9b7 100644
--- a/drivers/acpi/acpica/utdebug.c
+++ b/drivers/acpi/acpica/utdebug.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utdecode.c b/drivers/acpi/acpica/utdecode.c
index 40e923e675fc..988e23b7795c 100644
--- a/drivers/acpi/acpica/utdecode.c
+++ b/drivers/acpi/acpica/utdecode.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utdelete.c b/drivers/acpi/acpica/utdelete.c
index a3516de213fa..71fce389fd48 100644
--- a/drivers/acpi/acpica/utdelete.c
+++ b/drivers/acpi/acpica/utdelete.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/uterror.c b/drivers/acpi/acpica/uterror.c
index 8e544d4688cd..9ef80f2828e3 100644
--- a/drivers/acpi/acpica/uterror.c
+++ b/drivers/acpi/acpica/uterror.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/uteval.c b/drivers/acpi/acpica/uteval.c
index 8fed1482d228..6c738fa0cd42 100644
--- a/drivers/acpi/acpica/uteval.c
+++ b/drivers/acpi/acpica/uteval.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utexcep.c b/drivers/acpi/acpica/utexcep.c
index 0403dcaabaf2..743a0ae9fb17 100644
--- a/drivers/acpi/acpica/utexcep.c
+++ b/drivers/acpi/acpica/utexcep.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utfileio.c b/drivers/acpi/acpica/utfileio.c
index 4e263a8cc6f0..7e1168be39fa 100644
--- a/drivers/acpi/acpica/utfileio.c
+++ b/drivers/acpi/acpica/utfileio.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utglobal.c b/drivers/acpi/acpica/utglobal.c
index 77ceac715f28..5e8df9177da4 100644
--- a/drivers/acpi/acpica/utglobal.c
+++ b/drivers/acpi/acpica/utglobal.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/uthex.c b/drivers/acpi/acpica/uthex.c
index 9afa9441b183..aa448278ba28 100644
--- a/drivers/acpi/acpica/uthex.c
+++ b/drivers/acpi/acpica/uthex.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utids.c b/drivers/acpi/acpica/utids.c
index 4b12880e5b11..27431cfc1c44 100644
--- a/drivers/acpi/acpica/utids.c
+++ b/drivers/acpi/acpica/utids.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utinit.c b/drivers/acpi/acpica/utinit.c
index 77120ec9ea86..e402e07b4846 100644
--- a/drivers/acpi/acpica/utinit.c
+++ b/drivers/acpi/acpica/utinit.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utlock.c b/drivers/acpi/acpica/utlock.c
index dc6e96547f18..089f78bbd59b 100644
--- a/drivers/acpi/acpica/utlock.c
+++ b/drivers/acpi/acpica/utlock.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utmath.c b/drivers/acpi/acpica/utmath.c
index d44dee6ee10a..f9ff100f0159 100644
--- a/drivers/acpi/acpica/utmath.c
+++ b/drivers/acpi/acpica/utmath.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utmisc.c b/drivers/acpi/acpica/utmisc.c
index 2e2bb14e1099..56bbacd576f2 100644
--- a/drivers/acpi/acpica/utmisc.c
+++ b/drivers/acpi/acpica/utmisc.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utmutex.c b/drivers/acpi/acpica/utmutex.c
index 82717fff9ffc..37b8b58fcd56 100644
--- a/drivers/acpi/acpica/utmutex.c
+++ b/drivers/acpi/acpica/utmutex.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utobject.c b/drivers/acpi/acpica/utobject.c
index dfa9009bfc87..7d83efe1ea29 100644
--- a/drivers/acpi/acpica/utobject.c
+++ b/drivers/acpi/acpica/utobject.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utosi.c b/drivers/acpi/acpica/utosi.c
index 685766fc6ca8..574cd3118313 100644
--- a/drivers/acpi/acpica/utosi.c
+++ b/drivers/acpi/acpica/utosi.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utownerid.c b/drivers/acpi/acpica/utownerid.c
index 36bec57ebd23..2959217067cb 100644
--- a/drivers/acpi/acpica/utownerid.c
+++ b/drivers/acpi/acpica/utownerid.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utpredef.c b/drivers/acpi/acpica/utpredef.c
index db30caff130a..29e449935a82 100644
--- a/drivers/acpi/acpica/utpredef.c
+++ b/drivers/acpi/acpica/utpredef.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utprint.c b/drivers/acpi/acpica/utprint.c
index 0ce3f5a0dd67..82ca9142e10d 100644
--- a/drivers/acpi/acpica/utprint.c
+++ b/drivers/acpi/acpica/utprint.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utresrc.c b/drivers/acpi/acpica/utresrc.c
index bc1ff820c7dd..b3505dbc715e 100644
--- a/drivers/acpi/acpica/utresrc.c
+++ b/drivers/acpi/acpica/utresrc.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utstate.c b/drivers/acpi/acpica/utstate.c
index 1cc97a752c15..8274cc16edc3 100644
--- a/drivers/acpi/acpica/utstate.c
+++ b/drivers/acpi/acpica/utstate.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utstring.c b/drivers/acpi/acpica/utstring.c
index 6dc54b3c28b0..83b6c52490dc 100644
--- a/drivers/acpi/acpica/utstring.c
+++ b/drivers/acpi/acpica/utstring.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/uttrack.c b/drivers/acpi/acpica/uttrack.c
index 7d0ee969d781..130dd9f96f0f 100644
--- a/drivers/acpi/acpica/uttrack.c
+++ b/drivers/acpi/acpica/uttrack.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utuuid.c b/drivers/acpi/acpica/utuuid.c
index 4dc33130f134..c6149a212149 100644
--- a/drivers/acpi/acpica/utuuid.c
+++ b/drivers/acpi/acpica/utuuid.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utxface.c b/drivers/acpi/acpica/utxface.c
index 49c873c68756..0929187bdce0 100644
--- a/drivers/acpi/acpica/utxface.c
+++ b/drivers/acpi/acpica/utxface.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utxferror.c b/drivers/acpi/acpica/utxferror.c
index 88ef77f3cf88..306e785f9418 100644
--- a/drivers/acpi/acpica/utxferror.c
+++ b/drivers/acpi/acpica/utxferror.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utxfinit.c b/drivers/acpi/acpica/utxfinit.c
index b1fd6886e439..083a76891889 100644
--- a/drivers/acpi/acpica/utxfinit.c
+++ b/drivers/acpi/acpica/utxfinit.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/acpica/utxfmutex.c b/drivers/acpi/acpica/utxfmutex.c
index 2a0f9e04d3a4..f2606af3364c 100644
--- a/drivers/acpi/acpica/utxfmutex.c
+++ b/drivers/acpi/acpica/utxfmutex.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 1b5853f384e2..14d0c89ada2a 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -1,8 +1,8 @@
 /*
- *  ec.c - ACPI Embedded Controller Driver (v2.2)
+ *  ec.c - ACPI Embedded Controller Driver (v3)
  *
- *  Copyright (C) 2001-2014 Intel Corporation
- *    Author: 2014       Lv Zheng <lv.zheng@intel.com>
+ *  Copyright (C) 2001-2015 Intel Corporation
+ *    Author: 2014, 2015 Lv Zheng <lv.zheng@intel.com>
  *            2006, 2007 Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
  *            2006       Denis Sadykov <denis.m.sadykov@intel.com>
  *            2004       Luming Yu <luming.yu@intel.com>
@@ -31,6 +31,7 @@
 
 /* Uncomment next line to get verbose printout */
 /* #define DEBUG */
+#define DEBUG_REF 0
 #define pr_fmt(fmt) "ACPI : EC: " fmt
 
 #include <linux/kernel.h>
@@ -71,20 +72,32 @@ enum ec_command {
 #define ACPI_EC_DELAY           500     /* Wait 500ms max. during EC ops */
 #define ACPI_EC_UDELAY_GLK      1000    /* Wait 1ms max. to get global lock */
 #define ACPI_EC_MSI_UDELAY      550     /* Wait 550us for MSI EC */
+#define ACPI_EC_UDELAY_POLL     1000    /* Wait 1ms for EC transaction polling */
 #define ACPI_EC_CLEAR_MAX       100     /* Maximum number of events to query
                                          * when trying to clear the EC */
 
 enum {
-        EC_FLAGS_QUERY_PENDING,         /* Query is pending */
-        EC_FLAGS_GPE_STORM,             /* GPE storm detected */
+        EC_FLAGS_EVENT_ENABLED,         /* Event is enabled */
+        EC_FLAGS_EVENT_PENDING,         /* Event is pending */
+        EC_FLAGS_EVENT_DETECTED,        /* Event is detected */
         EC_FLAGS_HANDLERS_INSTALLED,    /* Handlers for GPE and
                                          * OpReg are installed */
-        EC_FLAGS_BLOCKED,               /* Transactions are blocked */
+        EC_FLAGS_STARTED,               /* Driver is started */
+        EC_FLAGS_STOPPED,               /* Driver is stopped */
+        EC_FLAGS_COMMAND_STORM,         /* GPE storms occurred to the
+                                         * current command processing */
 };
 
 #define ACPI_EC_COMMAND_POLL            0x01 /* Available for command byte */
 #define ACPI_EC_COMMAND_COMPLETE        0x02 /* Completed last byte */
 
+#define ec_debug_ref(ec, fmt, ...)                                      \
+        do {                                                            \
+                if (DEBUG_REF)                                          \
+                        pr_debug("%lu: " fmt, ec->reference_count,      \
+                                 ## __VA_ARGS__);                       \
+        } while (0)
+
 /* ec.c is compiled in acpi namespace so this shows up as acpi.ec_delay param */
 static unsigned int ec_delay __read_mostly = ACPI_EC_DELAY;
 module_param(ec_delay, uint, 0644);
@@ -105,6 +118,7 @@ struct acpi_ec_query_handler {
         acpi_handle handle;
         void *data;
         u8 query_bit;
+        struct kref kref;
 };
 
 struct transaction {
@@ -117,8 +131,12 @@ struct transaction {
         u8 wlen;
         u8 rlen;
         u8 flags;
+        unsigned long timestamp;
 };
 
+static int acpi_ec_query(struct acpi_ec *ec, u8 *data);
+static void advance_transaction(struct acpi_ec *ec);
+
 struct acpi_ec *boot_ec, *first_ec;
 EXPORT_SYMBOL(first_ec);
 
@@ -129,7 +147,28 @@ static int EC_FLAGS_CLEAR_ON_RESUME; /* Needs acpi_ec_clear() on boot/resume */
 static int EC_FLAGS_QUERY_HANDSHAKE; /* Needs QR_EC issued when SCI_EVT set */
 
 /* --------------------------------------------------------------------------
- *                           Transaction Management
+ *                           Device Flags
+ * -------------------------------------------------------------------------- */
+
+static bool acpi_ec_started(struct acpi_ec *ec)
+{
+        return test_bit(EC_FLAGS_STARTED, &ec->flags) &&
+               !test_bit(EC_FLAGS_STOPPED, &ec->flags);
+}
+
+static bool acpi_ec_flushed(struct acpi_ec *ec)
+{
+        return ec->reference_count == 1;
+}
+
+static bool acpi_ec_has_pending_event(struct acpi_ec *ec)
+{
+        return test_bit(EC_FLAGS_EVENT_DETECTED, &ec->flags) ||
+               test_bit(EC_FLAGS_EVENT_PENDING, &ec->flags);
+}
+
+/* --------------------------------------------------------------------------
+ *                           EC Registers
  * -------------------------------------------------------------------------- */
 
 static inline u8 acpi_ec_read_status(struct acpi_ec *ec)
@@ -151,6 +190,7 @@ static inline u8 acpi_ec_read_data(struct acpi_ec *ec)
 {
         u8 x = inb(ec->data_addr);
 
+        ec->curr->timestamp = jiffies;
         pr_debug("EC_DATA(R) = 0x%2.2x\n", x);
         return x;
 }
@@ -159,12 +199,14 @@ static inline void acpi_ec_write_cmd(struct acpi_ec *ec, u8 command)
 {
         pr_debug("EC_SC(W) = 0x%2.2x\n", command);
         outb(command, ec->command_addr);
+        ec->curr->timestamp = jiffies;
 }
 
 static inline void acpi_ec_write_data(struct acpi_ec *ec, u8 data)
 {
         pr_debug("EC_DATA(W) = 0x%2.2x\n", data);
         outb(data, ec->data_addr);
+        ec->curr->timestamp = jiffies;
 }
 
 #ifdef DEBUG
@@ -188,6 +230,203 @@ static const char *acpi_ec_cmd_string(u8 cmd)
 #define acpi_ec_cmd_string(cmd)         "UNDEF"
 #endif
 
+/* --------------------------------------------------------------------------
+ *                           GPE Registers
+ * -------------------------------------------------------------------------- */
+
+static inline bool acpi_ec_is_gpe_raised(struct acpi_ec *ec)
+{
+        acpi_event_status gpe_status = 0;
+
+        (void)acpi_get_gpe_status(NULL, ec->gpe, &gpe_status);
+        return (gpe_status & ACPI_EVENT_FLAG_SET) ? true : false;
+}
+
+static inline void acpi_ec_enable_gpe(struct acpi_ec *ec, bool open)
+{
+        if (open)
+                acpi_enable_gpe(NULL, ec->gpe);
+        else {
+                BUG_ON(ec->reference_count < 1);
+                acpi_set_gpe(NULL, ec->gpe, ACPI_GPE_ENABLE);
+        }
+        if (acpi_ec_is_gpe_raised(ec)) {
+                /*
+                 * On some platforms, EN=1 writes cannot trigger GPE. So
+                 * software need to manually trigger a pseudo GPE event on
+                 * EN=1 writes.
+                 */
+                pr_debug("***** Polling quirk *****\n");
+                advance_transaction(ec);
+        }
+}
+
+static inline void acpi_ec_disable_gpe(struct acpi_ec *ec, bool close)
+{
+        if (close)
+                acpi_disable_gpe(NULL, ec->gpe);
+        else {
+                BUG_ON(ec->reference_count < 1);
+                acpi_set_gpe(NULL, ec->gpe, ACPI_GPE_DISABLE);
+        }
+}
+
+static inline void acpi_ec_clear_gpe(struct acpi_ec *ec)
+{
+        /*
+         * GPE STS is a W1C register, which means:
+         * 1. Software can clear it without worrying about clearing other
+         *    GPEs' STS bits when the hardware sets them in parallel.
+         * 2. As long as software can ensure only clearing it when it is
+         *    set, hardware won't set it in parallel.
+         * So software can clear GPE in any contexts.
+         * Warning: do not move the check into advance_transaction() as the
+         * EC commands will be sent without GPE raised.
+         */
+        if (!acpi_ec_is_gpe_raised(ec))
+                return;
+        acpi_clear_gpe(NULL, ec->gpe);
+}
+
+/* --------------------------------------------------------------------------
+ *                           Transaction Management
+ * -------------------------------------------------------------------------- */
+
+static void acpi_ec_submit_request(struct acpi_ec *ec)
+{
+        ec->reference_count++;
+        if (ec->reference_count == 1)
+                acpi_ec_enable_gpe(ec, true);
+}
+
+static void acpi_ec_complete_request(struct acpi_ec *ec)
+{
+        bool flushed = false;
+
+        ec->reference_count--;
+        if (ec->reference_count == 0)
+                acpi_ec_disable_gpe(ec, true);
+        flushed = acpi_ec_flushed(ec);
+        if (flushed)
+                wake_up(&ec->wait);
+}
+
+static void acpi_ec_set_storm(struct acpi_ec *ec, u8 flag)
+{
+        if (!test_bit(flag, &ec->flags)) {
+                acpi_ec_disable_gpe(ec, false);
+                pr_debug("+++++ Polling enabled +++++\n");
+                set_bit(flag, &ec->flags);
+        }
+}
+
+static void acpi_ec_clear_storm(struct acpi_ec *ec, u8 flag)
+{
+        if (test_bit(flag, &ec->flags)) {
+                clear_bit(flag, &ec->flags);
+                acpi_ec_enable_gpe(ec, false);
+                pr_debug("+++++ Polling disabled +++++\n");
+        }
+}
+
+/*
+ * acpi_ec_submit_flushable_request() - Increase the reference count unless
+ *                                      the flush operation is not in
+ *                                      progress
+ * @ec: the EC device
+ * @allow_event: whether event should be handled
+ *
+ * This function must be used before taking a new action that should hold
+ * the reference count.  If this function returns false, then the action
+ * must be discarded or it will prevent the flush operation from being
+ * completed.
+ *
+ * During flushing, QR_EC command need to pass this check when there is a
+ * pending event, so that the reference count held for the pending event
+ * can be decreased by the completion of the QR_EC command.
+ */
+static bool acpi_ec_submit_flushable_request(struct acpi_ec *ec,
+                                             bool allow_event)
+{
+        if (!acpi_ec_started(ec)) {
+                if (!allow_event || !acpi_ec_has_pending_event(ec))
+                        return false;
+        }
+        acpi_ec_submit_request(ec);
+        return true;
+}
+
+static void acpi_ec_submit_event(struct acpi_ec *ec)
+{
+        if (!test_bit(EC_FLAGS_EVENT_DETECTED, &ec->flags) ||
+            !test_bit(EC_FLAGS_EVENT_ENABLED, &ec->flags))
+                return;
+        /* Hold reference for pending event */
+        if (!acpi_ec_submit_flushable_request(ec, true))
+                return;
+        ec_debug_ref(ec, "Increase event\n");
+        if (!test_and_set_bit(EC_FLAGS_EVENT_PENDING, &ec->flags)) {
+                pr_debug("***** Event query started *****\n");
+                schedule_work(&ec->work);
+                return;
+        }
+        acpi_ec_complete_request(ec);
+        ec_debug_ref(ec, "Decrease event\n");
+}
+
+static void acpi_ec_complete_event(struct acpi_ec *ec)
+{
+        if (ec->curr->command == ACPI_EC_COMMAND_QUERY) {
+                clear_bit(EC_FLAGS_EVENT_PENDING, &ec->flags);
+                pr_debug("***** Event query stopped *****\n");
+                /* Unhold reference for pending event */
+                acpi_ec_complete_request(ec);
+                ec_debug_ref(ec, "Decrease event\n");
+                /* Check if there is another SCI_EVT detected */
+                acpi_ec_submit_event(ec);
+        }
+}
+
+static void acpi_ec_submit_detection(struct acpi_ec *ec)
+{
+        /* Hold reference for query submission */
+        if (!acpi_ec_submit_flushable_request(ec, false))
+                return;
+        ec_debug_ref(ec, "Increase query\n");
+        if (!test_and_set_bit(EC_FLAGS_EVENT_DETECTED, &ec->flags)) {
+                pr_debug("***** Event detection blocked *****\n");
+                acpi_ec_submit_event(ec);
+                return;
+        }
+        acpi_ec_complete_request(ec);
+        ec_debug_ref(ec, "Decrease query\n");
+}
+
+static void acpi_ec_complete_detection(struct acpi_ec *ec)
+{
+        if (ec->curr->command == ACPI_EC_COMMAND_QUERY) {
+                clear_bit(EC_FLAGS_EVENT_DETECTED, &ec->flags);
+                pr_debug("***** Event detetion unblocked *****\n");
+                /* Unhold reference for query submission */
+                acpi_ec_complete_request(ec);
+                ec_debug_ref(ec, "Decrease query\n");
+        }
+}
+
+static void acpi_ec_enable_event(struct acpi_ec *ec)
+{
+        unsigned long flags;
+
+        spin_lock_irqsave(&ec->lock, flags);
+        set_bit(EC_FLAGS_EVENT_ENABLED, &ec->flags);
+        /*
+         * An event may be pending even with SCI_EVT=0, so QR_EC should
+         * always be issued right after started.
+         */
+        acpi_ec_submit_detection(ec);
+        spin_unlock_irqrestore(&ec->lock, flags);
+}
+
 static int ec_transaction_completed(struct acpi_ec *ec)
 {
         unsigned long flags;
@@ -200,7 +439,7 @@ static int ec_transaction_completed(struct acpi_ec *ec)
         return ret;
 }
 
-static bool advance_transaction(struct acpi_ec *ec)
+static void advance_transaction(struct acpi_ec *ec)
 {
         struct transaction *t;
         u8 status;
@@ -208,6 +447,12 @@ static bool advance_transaction(struct acpi_ec *ec)
 
         pr_debug("===== %s (%d) =====\n",
                  in_interrupt() ? "IRQ" : "TASK", smp_processor_id());
+        /*
+         * By always clearing STS before handling all indications, we can
+         * ensure a hardware STS 0->1 change after this clearing can always
+         * trigger a GPE interrupt.
+         */
+        acpi_ec_clear_gpe(ec);
         status = acpi_ec_read_status(ec);
         t = ec->curr;
         if (!t)
@@ -223,6 +468,7 @@ static bool advance_transaction(struct acpi_ec *ec)
                                 t->rdata[t->ri++] = acpi_ec_read_data(ec);
                                 if (t->rlen == t->ri) {
                                         t->flags |= ACPI_EC_COMMAND_COMPLETE;
+                                        acpi_ec_complete_event(ec);
                                         if (t->command == ACPI_EC_COMMAND_QUERY)
                                                 pr_debug("***** Command(%s) hardware completion *****\n",
                                                          acpi_ec_cmd_string(t->command));
@@ -233,25 +479,29 @@ static bool advance_transaction(struct acpi_ec *ec)
                 } else if (t->wlen == t->wi &&
                            (status & ACPI_EC_FLAG_IBF) == 0) {
                         t->flags |= ACPI_EC_COMMAND_COMPLETE;
+                        acpi_ec_complete_event(ec);
                         wakeup = true;
                 }
-                return wakeup;
+                goto out;
         } else {
                 if (EC_FLAGS_QUERY_HANDSHAKE &&
                     !(status & ACPI_EC_FLAG_SCI) &&
                     (t->command == ACPI_EC_COMMAND_QUERY)) {
                         t->flags |= ACPI_EC_COMMAND_POLL;
+                        acpi_ec_complete_detection(ec);
                         t->rdata[t->ri++] = 0x00;
                         t->flags |= ACPI_EC_COMMAND_COMPLETE;
+                        acpi_ec_complete_event(ec);
                         pr_debug("***** Command(%s) software completion *****\n",
                                  acpi_ec_cmd_string(t->command));
                         wakeup = true;
                 } else if ((status & ACPI_EC_FLAG_IBF) == 0) {
                         acpi_ec_write_cmd(ec, t->command);
                         t->flags |= ACPI_EC_COMMAND_POLL;
+                        acpi_ec_complete_detection(ec);
                 } else
                         goto err;
-                return wakeup;
+                goto out;
         }
 err:
         /*
@@ -259,28 +509,27 @@ err:
          * otherwise will take a not handled IRQ as a false one.
          */
         if (!(status & ACPI_EC_FLAG_SCI)) {
-                if (in_interrupt() && t)
-                        ++t->irq_count;
+                if (in_interrupt() && t) {
+                        if (t->irq_count < ec_storm_threshold)
+                                ++t->irq_count;
+                        /* Allow triggering on 0 threshold */
+                        if (t->irq_count == ec_storm_threshold)
+                                acpi_ec_set_storm(ec, EC_FLAGS_COMMAND_STORM);
+                }
         }
-        return wakeup;
+out:
+        if (status & ACPI_EC_FLAG_SCI)
+                acpi_ec_submit_detection(ec);
+        if (wakeup && in_interrupt())
+                wake_up(&ec->wait);
 }
 
 static void start_transaction(struct acpi_ec *ec)
 {
         ec->curr->irq_count = ec->curr->wi = ec->curr->ri = 0;
         ec->curr->flags = 0;
-        (void)advance_transaction(ec);
-}
-
-static int acpi_ec_sync_query(struct acpi_ec *ec, u8 *data);
-
-static int ec_check_sci_sync(struct acpi_ec *ec, u8 state)
-{
-        if (state & ACPI_EC_FLAG_SCI) {
-                if (!test_and_set_bit(EC_FLAGS_QUERY_PENDING, &ec->flags))
-                        return acpi_ec_sync_query(ec, NULL);
-        }
-        return 0;
+        ec->curr->timestamp = jiffies;
+        advance_transaction(ec);
 }
 
 static int ec_poll(struct acpi_ec *ec)
@@ -291,20 +540,25 @@ static int ec_poll(struct acpi_ec *ec)
         while (repeat--) {
                 unsigned long delay = jiffies +
                         msecs_to_jiffies(ec_delay);
+                unsigned long usecs = ACPI_EC_UDELAY_POLL;
                 do {
                         /* don't sleep with disabled interrupts */
                         if (EC_FLAGS_MSI || irqs_disabled()) {
-                                udelay(ACPI_EC_MSI_UDELAY);
+                                usecs = ACPI_EC_MSI_UDELAY;
+                                udelay(usecs);
                                 if (ec_transaction_completed(ec))
                                         return 0;
                         } else {
                                 if (wait_event_timeout(ec->wait,
                                                 ec_transaction_completed(ec),
-                                                msecs_to_jiffies(1)))
+                                                usecs_to_jiffies(usecs)))
                                         return 0;
                         }
                         spin_lock_irqsave(&ec->lock, flags);
-                        (void)advance_transaction(ec);
+                        if (time_after(jiffies,
+                                        ec->curr->timestamp +
+                                        usecs_to_jiffies(usecs)))
+                                advance_transaction(ec);
                         spin_unlock_irqrestore(&ec->lock, flags);
                 } while (time_before(jiffies, delay));
                 pr_debug("controller reset, restart transaction\n");
@@ -325,21 +579,29 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec,
                 udelay(ACPI_EC_MSI_UDELAY);
         /* start transaction */
         spin_lock_irqsave(&ec->lock, tmp);
+        /* Enable GPE for command processing (IBF=0/OBF=1) */
+        if (!acpi_ec_submit_flushable_request(ec, true)) {
+                ret = -EINVAL;
+                goto unlock;
+        }
+        ec_debug_ref(ec, "Increase command\n");
         /* following two actions should be kept atomic */
         ec->curr = t;
         pr_debug("***** Command(%s) started *****\n",
                  acpi_ec_cmd_string(t->command));
         start_transaction(ec);
-        if (ec->curr->command == ACPI_EC_COMMAND_QUERY) {
-                clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags);
-                pr_debug("***** Event stopped *****\n");
-        }
         spin_unlock_irqrestore(&ec->lock, tmp);
         ret = ec_poll(ec);
         spin_lock_irqsave(&ec->lock, tmp);
+        if (t->irq_count == ec_storm_threshold)
+                acpi_ec_clear_storm(ec, EC_FLAGS_COMMAND_STORM);
         pr_debug("***** Command(%s) stopped *****\n",
                  acpi_ec_cmd_string(t->command));
         ec->curr = NULL;
+        /* Disable GPE for command processing (IBF=0/OBF=1) */
+        acpi_ec_complete_request(ec);
+        ec_debug_ref(ec, "Decrease command\n");
+unlock:
         spin_unlock_irqrestore(&ec->lock, tmp);
         return ret;
 }
@@ -354,10 +616,6 @@ static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t)
         if (t->rdata)
                 memset(t->rdata, 0, t->rlen);
         mutex_lock(&ec->mutex);
-        if (test_bit(EC_FLAGS_BLOCKED, &ec->flags)) {
-                status = -EINVAL;
-                goto unlock;
-        }
         if (ec->global_lock) {
                 status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
                 if (ACPI_FAILURE(status)) {
@@ -365,26 +623,11 @@ static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t)
                         goto unlock;
                 }
         }
-        /* disable GPE during transaction if storm is detected */
-        if (test_bit(EC_FLAGS_GPE_STORM, &ec->flags)) {
-                /* It has to be disabled, so that it doesn't trigger. */
-                acpi_disable_gpe(NULL, ec->gpe);
-        }
 
         status = acpi_ec_transaction_unlocked(ec, t);
 
-        /* check if we received SCI during transaction */
-        ec_check_sci_sync(ec, acpi_ec_read_status(ec));
-        if (test_bit(EC_FLAGS_GPE_STORM, &ec->flags)) {
+        if (test_bit(EC_FLAGS_COMMAND_STORM, &ec->flags))
                 msleep(1);
-                /* It is safe to enable the GPE outside of the transaction. */
-                acpi_enable_gpe(NULL, ec->gpe);
-        } else if (t->irq_count > ec_storm_threshold) {
-                pr_info("GPE storm detected(%d GPEs), "
-                        "transactions will use polling mode\n",
-                        t->irq_count);
-                set_bit(EC_FLAGS_GPE_STORM, &ec->flags);
-        }
         if (ec->global_lock)
                 acpi_release_global_lock(glk);
 unlock:
@@ -500,7 +743,7 @@ static void acpi_ec_clear(struct acpi_ec *ec)
         u8 value = 0;
 
         for (i = 0; i < ACPI_EC_CLEAR_MAX; i++) {
-                status = acpi_ec_sync_query(ec, &value);
+                status = acpi_ec_query(ec, &value);
                 if (status || !value)
                         break;
         }
@@ -511,6 +754,57 @@ static void acpi_ec_clear(struct acpi_ec *ec)
                 pr_info("%d stale EC events cleared\n", i);
 }
 
+static void acpi_ec_start(struct acpi_ec *ec, bool resuming)
+{
+        unsigned long flags;
+
+        spin_lock_irqsave(&ec->lock, flags);
+        if (!test_and_set_bit(EC_FLAGS_STARTED, &ec->flags)) {
+                pr_debug("+++++ Starting EC +++++\n");
+                /* Enable GPE for event processing (SCI_EVT=1) */
+                if (!resuming) {
+                        acpi_ec_submit_request(ec);
+                        ec_debug_ref(ec, "Increase driver\n");
+                }
+                pr_info("+++++ EC started +++++\n");
+        }
+        spin_unlock_irqrestore(&ec->lock, flags);
+}
+
+static bool acpi_ec_stopped(struct acpi_ec *ec)
+{
+        unsigned long flags;
+        bool flushed;
+
+        spin_lock_irqsave(&ec->lock, flags);
+        flushed = acpi_ec_flushed(ec);
+        spin_unlock_irqrestore(&ec->lock, flags);
+        return flushed;
+}
+
+static void acpi_ec_stop(struct acpi_ec *ec, bool suspending)
+{
+        unsigned long flags;
+
+        spin_lock_irqsave(&ec->lock, flags);
+        if (acpi_ec_started(ec)) {
+                pr_debug("+++++ Stopping EC +++++\n");
+                set_bit(EC_FLAGS_STOPPED, &ec->flags);
+                spin_unlock_irqrestore(&ec->lock, flags);
+                wait_event(ec->wait, acpi_ec_stopped(ec));
+                spin_lock_irqsave(&ec->lock, flags);
+                /* Disable GPE for event processing (SCI_EVT=1) */
+                if (!suspending) {
+                        acpi_ec_complete_request(ec);
+                        ec_debug_ref(ec, "Decrease driver\n");
+                }
+                clear_bit(EC_FLAGS_STARTED, &ec->flags);
+                clear_bit(EC_FLAGS_STOPPED, &ec->flags);
+                pr_info("+++++ EC stopped +++++\n");
+        }
+        spin_unlock_irqrestore(&ec->lock, flags);
+}
+
 void acpi_ec_block_transactions(void)
 {
         struct acpi_ec *ec = first_ec;
@@ -520,7 +814,7 @@ void acpi_ec_block_transactions(void)
 
         mutex_lock(&ec->mutex);
         /* Prevent transactions from being carried out */
-        set_bit(EC_FLAGS_BLOCKED, &ec->flags);
+        acpi_ec_stop(ec, true);
         mutex_unlock(&ec->mutex);
 }
 
@@ -531,14 +825,11 @@ void acpi_ec_unblock_transactions(void)
         if (!ec)
                 return;
 
-        mutex_lock(&ec->mutex);
         /* Allow transactions to be carried out again */
-        clear_bit(EC_FLAGS_BLOCKED, &ec->flags);
+        acpi_ec_start(ec, true);
 
         if (EC_FLAGS_CLEAR_ON_RESUME)
                 acpi_ec_clear(ec);
-
-        mutex_unlock(&ec->mutex);
 }
 
 void acpi_ec_unblock_transactions_early(void)
@@ -548,36 +839,33 @@ void acpi_ec_unblock_transactions_early(void)
          * atomic context during wakeup, so we don't need to acquire the mutex).
          */
         if (first_ec)
-                clear_bit(EC_FLAGS_BLOCKED, &first_ec->flags);
+                acpi_ec_start(first_ec, true);
 }
 
-static int acpi_ec_query_unlocked(struct acpi_ec *ec, u8 *data)
+/* --------------------------------------------------------------------------
+                                Event Management
+   -------------------------------------------------------------------------- */
+static struct acpi_ec_query_handler *
+acpi_ec_get_query_handler(struct acpi_ec_query_handler *handler)
 {
-        int result;
-        u8 d;
-        struct transaction t = {.command = ACPI_EC_COMMAND_QUERY,
-                                .wdata = NULL, .rdata = &d,
-                                .wlen = 0, .rlen = 1};
+        if (handler)
+                kref_get(&handler->kref);
+        return handler;
+}
 
-        if (!ec || !data)
-                return -EINVAL;
-        /*
-         * Query the EC to find out which _Qxx method we need to evaluate.
-         * Note that successful completion of the query causes the ACPI_EC_SCI
-         * bit to be cleared (and thus clearing the interrupt source).
-         */
-        result = acpi_ec_transaction_unlocked(ec, &t);
-        if (result)
-                return result;
-        if (!d)
-                return -ENODATA;
-        *data = d;
-        return 0;
+static void acpi_ec_query_handler_release(struct kref *kref)
+{
+        struct acpi_ec_query_handler *handler =
+                container_of(kref, struct acpi_ec_query_handler, kref);
+
+        kfree(handler);
+}
+
+static void acpi_ec_put_query_handler(struct acpi_ec_query_handler *handler)
+{
+        kref_put(&handler->kref, acpi_ec_query_handler_release);
 }
 
-/* --------------------------------------------------------------------------
-                                Event Management
-   -------------------------------------------------------------------------- */
 int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit,
                               acpi_handle handle, acpi_ec_query_func func,
                               void *data)
@@ -593,6 +881,7 @@ int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit,
         handler->func = func;
         handler->data = data;
         mutex_lock(&ec->mutex);
+        kref_init(&handler->kref);
         list_add(&handler->node, &ec->list);
         mutex_unlock(&ec->mutex);
         return 0;
@@ -602,15 +891,18 @@ EXPORT_SYMBOL_GPL(acpi_ec_add_query_handler);
 void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit)
 {
         struct acpi_ec_query_handler *handler, *tmp;
+        LIST_HEAD(free_list);
 
         mutex_lock(&ec->mutex);
         list_for_each_entry_safe(handler, tmp, &ec->list, node) {
                 if (query_bit == handler->query_bit) {
-                        list_del(&handler->node);
-                        kfree(handler);
+                        list_del_init(&handler->node);
+                        list_add(&handler->node, &free_list);
                 }
         }
         mutex_unlock(&ec->mutex);
+        list_for_each_entry(handler, &free_list, node)
+                acpi_ec_put_query_handler(handler);
 }
 EXPORT_SYMBOL_GPL(acpi_ec_remove_query_handler);
 
@@ -626,59 +918,58 @@ static void acpi_ec_run(void *cxt)
         else if (handler->handle)
                 acpi_evaluate_object(handler->handle, NULL, NULL, NULL);
         pr_debug("##### Query(0x%02x) stopped #####\n", handler->query_bit);
-        kfree(handler);
+        acpi_ec_put_query_handler(handler);
 }
 
-static int acpi_ec_sync_query(struct acpi_ec *ec, u8 *data)
+static int acpi_ec_query(struct acpi_ec *ec, u8 *data)
 {
         u8 value = 0;
-        int status;
-        struct acpi_ec_query_handler *handler, *copy;
+        int result;
+        acpi_status status;
+        struct acpi_ec_query_handler *handler;
+        struct transaction t = {.command = ACPI_EC_COMMAND_QUERY,
+                                .wdata = NULL, .rdata = &value,
+                                .wlen = 0, .rlen = 1};
 
-        status = acpi_ec_query_unlocked(ec, &value);
+        /*
+         * Query the EC to find out which _Qxx method we need to evaluate.
+         * Note that successful completion of the query causes the ACPI_EC_SCI
+         * bit to be cleared (and thus clearing the interrupt source).
+         */
+        result = acpi_ec_transaction(ec, &t);
+        if (result)
+                return result;
         if (data)
                 *data = value;
-        if (status)
-                return status;
+        if (!value)
+                return -ENODATA;
 
+        mutex_lock(&ec->mutex);
         list_for_each_entry(handler, &ec->list, node) {
                 if (value == handler->query_bit) {
                         /* have custom handler for this bit */
-                        copy = kmalloc(sizeof(*handler), GFP_KERNEL);
-                        if (!copy)
-                                return -ENOMEM;
-                        memcpy(copy, handler, sizeof(*copy));
+                        handler = acpi_ec_get_query_handler(handler);
                         pr_debug("##### Query(0x%02x) scheduled #####\n",
                                  handler->query_bit);
-                        return acpi_os_execute((copy->func) ?
+                        status = acpi_os_execute((handler->func) ?
                                 OSL_NOTIFY_HANDLER : OSL_GPE_HANDLER,
-                                acpi_ec_run, copy);
+                                acpi_ec_run, handler);
+                        if (ACPI_FAILURE(status))
+                                result = -EBUSY;
+                        break;
                 }
         }
-        return 0;
-}
-
-static void acpi_ec_gpe_query(void *ec_cxt)
-{
-        struct acpi_ec *ec = ec_cxt;
-
-        if (!ec)
-                return;
-        mutex_lock(&ec->mutex);
-        acpi_ec_sync_query(ec, NULL);
         mutex_unlock(&ec->mutex);
+        return result;
 }
 
-static int ec_check_sci(struct acpi_ec *ec, u8 state)
+static void acpi_ec_gpe_poller(struct work_struct *work)
 {
-        if (state & ACPI_EC_FLAG_SCI) {
-                if (!test_and_set_bit(EC_FLAGS_QUERY_PENDING, &ec->flags)) {
-                        pr_debug("***** Event started *****\n");
-                        return acpi_os_execute(OSL_NOTIFY_HANDLER,
-                                acpi_ec_gpe_query, ec);
-                }
-        }
-        return 0;
+        struct acpi_ec *ec = container_of(work, struct acpi_ec, work);
+
+        pr_debug("***** Event poller started *****\n");
+        acpi_ec_query(ec, NULL);
+        pr_debug("***** Event poller stopped *****\n");
 }
 
 static u32 acpi_ec_gpe_handler(acpi_handle gpe_device,
@@ -688,11 +979,9 @@ static u32 acpi_ec_gpe_handler(acpi_handle gpe_device,
         struct acpi_ec *ec = data;
 
         spin_lock_irqsave(&ec->lock, flags);
-        if (advance_transaction(ec))
-                wake_up(&ec->wait);
+        advance_transaction(ec);
         spin_unlock_irqrestore(&ec->lock, flags);
-        ec_check_sci(ec, acpi_ec_read_status(ec));
-        return ACPI_INTERRUPT_HANDLED | ACPI_REENABLE_GPE;
+        return ACPI_INTERRUPT_HANDLED;
 }
 
 /* --------------------------------------------------------------------------
@@ -750,11 +1039,11 @@ static struct acpi_ec *make_acpi_ec(void)
 
         if (!ec)
                 return NULL;
-        ec->flags = 1 << EC_FLAGS_QUERY_PENDING;
         mutex_init(&ec->mutex);
         init_waitqueue_head(&ec->wait);
         INIT_LIST_HEAD(&ec->list);
         spin_lock_init(&ec->lock);
+        INIT_WORK(&ec->work, acpi_ec_gpe_poller);
         return ec;
 }
 
@@ -810,13 +1099,13 @@ static int ec_install_handlers(struct acpi_ec *ec)
 
         if (test_bit(EC_FLAGS_HANDLERS_INSTALLED, &ec->flags))
                 return 0;
-        status = acpi_install_gpe_handler(NULL, ec->gpe,
+        status = acpi_install_gpe_raw_handler(NULL, ec->gpe,
                                   ACPI_GPE_EDGE_TRIGGERED,
                                   &acpi_ec_gpe_handler, ec);
         if (ACPI_FAILURE(status))
                 return -ENODEV;
 
-        acpi_enable_gpe(NULL, ec->gpe);
+        acpi_ec_start(ec, false);
         status = acpi_install_address_space_handler(ec->handle,
                                                     ACPI_ADR_SPACE_EC,
                                                     &acpi_ec_space_handler,
@@ -831,7 +1120,7 @@ static int ec_install_handlers(struct acpi_ec *ec)
                         pr_err("Fail in evaluating the _REG object"
                                 " of EC device. Broken bios is suspected.\n");
                 } else {
-                        acpi_disable_gpe(NULL, ec->gpe);
+                        acpi_ec_stop(ec, false);
                         acpi_remove_gpe_handler(NULL, ec->gpe,
                                 &acpi_ec_gpe_handler);
                         return -ENODEV;
@@ -846,7 +1135,7 @@ static void ec_remove_handlers(struct acpi_ec *ec)
 {
         if (!test_bit(EC_FLAGS_HANDLERS_INSTALLED, &ec->flags))
                 return;
-        acpi_disable_gpe(NULL, ec->gpe);
+        acpi_ec_stop(ec, false);
         if (ACPI_FAILURE(acpi_remove_address_space_handler(ec->handle,
                                 ACPI_ADR_SPACE_EC, &acpi_ec_space_handler)))
                 pr_err("failed to remove space handler\n");
@@ -900,14 +1189,11 @@ static int acpi_ec_add(struct acpi_device *device)
         ret = ec_install_handlers(ec);
 
         /* EC is fully operational, allow queries */
-        clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags);
+        acpi_ec_enable_event(ec);
 
         /* Clear stale _Q events if hardware might require that */
-        if (EC_FLAGS_CLEAR_ON_RESUME) {
-                mutex_lock(&ec->mutex);
+        if (EC_FLAGS_CLEAR_ON_RESUME)
                 acpi_ec_clear(ec);
-                mutex_unlock(&ec->mutex);
-        }
         return ret;
 }
 
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index caca2805536d..56b321aa2b1c 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -75,6 +75,8 @@ static inline void acpi_debugfs_init(void) { return; }
 #endif
 void acpi_lpss_init(void);
 
+void acpi_apd_init(void);
+
 acpi_status acpi_hotplug_schedule(struct acpi_device *adev, u32 src);
 bool acpi_queue_hotplug_work(struct work_struct *work);
 void acpi_device_hotplug(struct acpi_device *adev, u32 src);
@@ -129,11 +131,13 @@ struct acpi_ec {
         unsigned long data_addr;
         unsigned long global_lock;
         unsigned long flags;
+        unsigned long reference_count;
         struct mutex mutex;
         wait_queue_head_t wait;
         struct list_head list;
         struct transaction *curr;
         spinlock_t lock;
+        struct work_struct work;
 };
 
 extern struct acpi_ec *first_ec;
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index 24b5476449a1..1333cbdc3ea2 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -177,12 +177,7 @@ static int __init slit_valid(struct acpi_table_slit *slit)
 
 static int __init acpi_parse_slit(struct acpi_table_header *table)
 {
-        struct acpi_table_slit *slit;
-
-        if (!table)
-                return -EINVAL;
-
-        slit = (struct acpi_table_slit *)table;
+        struct acpi_table_slit *slit = (struct acpi_table_slit *)table;
 
         if (!slit_valid(slit)) {
                 printk(KERN_INFO "ACPI: SLIT table looks invalid. Not used.\n");
@@ -260,11 +255,8 @@ acpi_parse_memory_affinity(struct acpi_subtable_header * header,
 
 static int __init acpi_parse_srat(struct acpi_table_header *table)
 {
-        struct acpi_table_srat *srat;
-        if (!table)
-                return -EINVAL;
+        struct acpi_table_srat *srat = (struct acpi_table_srat *)table;
 
-        srat = (struct acpi_table_srat *)table;
         acpi_srat_revision = srat->header.revision;
 
         /* Real work done in acpi_table_parse_srat below. */
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 87b704e41877..c256bd7fbd78 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -681,15 +681,13 @@ static int acpi_idle_bm_check(void)
 }
 
 /**
- * acpi_idle_do_entry - a helper function that does C2 and C3 type entry
+ * acpi_idle_do_entry - enter idle state using the appropriate method
  * @cx: cstate data
  *
  * Caller disables interrupt before call and enables interrupt after return.
  */
-static inline void acpi_idle_do_entry(struct acpi_processor_cx *cx)
+static void acpi_idle_do_entry(struct acpi_processor_cx *cx)
 {
-        /* Don't trace irqs off for idle */
-        stop_critical_timings();
         if (cx->entry_method == ACPI_CSTATE_FFH) {
                 /* Call into architectural FFH based C-state */
                 acpi_processor_ffh_cstate_enter(cx);
@@ -703,38 +701,9 @@ static inline void acpi_idle_do_entry(struct acpi_processor_cx *cx)
                    gets asserted in time to freeze execution properly. */
                 inl(acpi_gbl_FADT.xpm_timer_block.address);
         }
-        start_critical_timings();
 }
 
 /**
- * acpi_idle_enter_c1 - enters an ACPI C1 state-type
- * @dev: the target CPU
- * @drv: cpuidle driver containing cpuidle state info
- * @index: index of target state
- *
- * This is equivalent to the HALT instruction.
- */
-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 = per_cpu(acpi_cstate[index], dev->cpu);
-
-        pr = __this_cpu_read(processors);
-
-        if (unlikely(!pr))
-                return -EINVAL;
-
-        lapic_timer_state_broadcast(pr, cx, 1);
-        acpi_idle_do_entry(cx);
-
-        lapic_timer_state_broadcast(pr, cx, 0);
-
-        return index;
-}
-
-
-/**
  * acpi_idle_play_dead - enters an ACPI state for long-term idle (i.e. off-lining)
  * @dev: the target CPU
  * @index: the index of suggested state
@@ -761,47 +730,11 @@ static int acpi_idle_play_dead(struct cpuidle_device *dev, int index)
         return 0;
 }
 
-/**
- * acpi_idle_enter_simple - enters an ACPI state without BM handling
- * @dev: the target CPU
- * @drv: cpuidle driver with cpuidle state information
- * @index: the index of suggested state
- */
-static int acpi_idle_enter_simple(struct cpuidle_device *dev,
-                struct cpuidle_driver *drv, int index)
+static bool acpi_idle_fallback_to_c1(struct acpi_processor *pr)
 {
-        struct acpi_processor *pr;
-        struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu);
-
-        pr = __this_cpu_read(processors);
-
-        if (unlikely(!pr))
-                return -EINVAL;
-
-#ifdef CONFIG_HOTPLUG_CPU
-        if ((cx->type != ACPI_STATE_C1) && (num_online_cpus() > 1) &&
-            !pr->flags.has_cst &&
-            !(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED))
-                return acpi_idle_enter_c1(dev, drv, CPUIDLE_DRIVER_STATE_START);
-#endif
-
-        /*
-         * Must be done before busmaster disable as we might need to
-         * access HPET !
-         */
-        lapic_timer_state_broadcast(pr, cx, 1);
-
-        if (cx->type == ACPI_STATE_C3)
-                ACPI_FLUSH_CPU_CACHE();
-
-        /* Tell the scheduler that we are going deep-idle: */
-        sched_clock_idle_sleep_event();
-        acpi_idle_do_entry(cx);
-
-        sched_clock_idle_wakeup_event(0);
-
-        lapic_timer_state_broadcast(pr, cx, 0);
-        return index;
+        return IS_ENABLED(CONFIG_HOTPLUG_CPU) && num_online_cpus() > 1 &&
+                !(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED) &&
+                !pr->flags.has_cst;
 }
 
 static int c3_cpu_count;
@@ -809,44 +742,14 @@ static DEFINE_RAW_SPINLOCK(c3_lock);
 
 /**
  * acpi_idle_enter_bm - enters C3 with proper BM handling
- * @dev: the target CPU
- * @drv: cpuidle driver containing state data
- * @index: the index of suggested state
- *
- * If BM is detected, the deepest non-C3 idle state is entered instead.
+ * @pr: Target processor
+ * @cx: Target state context
  */
-static int acpi_idle_enter_bm(struct cpuidle_device *dev,
-                struct cpuidle_driver *drv, int index)
+static void acpi_idle_enter_bm(struct acpi_processor *pr,
+                               struct acpi_processor_cx *cx)
 {
-        struct acpi_processor *pr;
-        struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu);
-
-        pr = __this_cpu_read(processors);
-
-        if (unlikely(!pr))
-                return -EINVAL;
-
-#ifdef CONFIG_HOTPLUG_CPU
-        if ((cx->type != ACPI_STATE_C1) && (num_online_cpus() > 1) &&
-            !pr->flags.has_cst &&
-            !(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED))
-                return acpi_idle_enter_c1(dev, drv, CPUIDLE_DRIVER_STATE_START);
-#endif
-
-        if (!cx->bm_sts_skip && acpi_idle_bm_check()) {
-                if (drv->safe_state_index >= 0) {
-                        return drv->states[drv->safe_state_index].enter(dev,
-                                                drv, drv->safe_state_index);
-                } else {
-                        acpi_safe_halt();
-                        return -EBUSY;
-                }
-        }
-
         acpi_unlazy_tlb(smp_processor_id());
 
-        /* Tell the scheduler that we are going deep-idle: */
-        sched_clock_idle_sleep_event();
         /*
          * Must be done before busmaster disable as we might need to
          * access HPET !
@@ -856,37 +759,71 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
         /*
          * disable bus master
          * bm_check implies we need ARB_DIS
-         * !bm_check implies we need cache flush
          * bm_control implies whether we can do ARB_DIS
          *
          * That leaves a case where bm_check is set and bm_control is
          * not set. In that case we cannot do much, we enter C3
          * without doing anything.
          */
-        if (pr->flags.bm_check && pr->flags.bm_control) {
+        if (pr->flags.bm_control) {
                 raw_spin_lock(&c3_lock);
                 c3_cpu_count++;
                 /* Disable bus master arbitration when all CPUs are in C3 */
                 if (c3_cpu_count == num_online_cpus())
                         acpi_write_bit_register(ACPI_BITREG_ARB_DISABLE, 1);
                 raw_spin_unlock(&c3_lock);
-        } else if (!pr->flags.bm_check) {
-                ACPI_FLUSH_CPU_CACHE();
         }
 
         acpi_idle_do_entry(cx);
 
         /* Re-enable bus master arbitration */
-        if (pr->flags.bm_check && pr->flags.bm_control) {
+        if (pr->flags.bm_control) {
                 raw_spin_lock(&c3_lock);
                 acpi_write_bit_register(ACPI_BITREG_ARB_DISABLE, 0);
                 c3_cpu_count--;
                 raw_spin_unlock(&c3_lock);
         }
 
-        sched_clock_idle_wakeup_event(0);
+        lapic_timer_state_broadcast(pr, cx, 0);
+}
+
+static int acpi_idle_enter(struct cpuidle_device *dev,
+                           struct cpuidle_driver *drv, int index)
+{
+        struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu);
+        struct acpi_processor *pr;
+
+        pr = __this_cpu_read(processors);
+        if (unlikely(!pr))
+                return -EINVAL;
+
+        if (cx->type != ACPI_STATE_C1) {
+                if (acpi_idle_fallback_to_c1(pr)) {
+                        index = CPUIDLE_DRIVER_STATE_START;
+                        cx = per_cpu(acpi_cstate[index], dev->cpu);
+                } else if (cx->type == ACPI_STATE_C3 && pr->flags.bm_check) {
+                        if (cx->bm_sts_skip || !acpi_idle_bm_check()) {
+                                acpi_idle_enter_bm(pr, cx);
+                                return index;
+                        } else if (drv->safe_state_index >= 0) {
+                                index = drv->safe_state_index;
+                                cx = per_cpu(acpi_cstate[index], dev->cpu);
+                        } else {
+                                acpi_safe_halt();
+                                return -EBUSY;
+                        }
+                }
+        }
+
+        lapic_timer_state_broadcast(pr, cx, 1);
+
+        if (cx->type == ACPI_STATE_C3)
+                ACPI_FLUSH_CPU_CACHE();
+
+        acpi_idle_do_entry(cx);
 
         lapic_timer_state_broadcast(pr, cx, 0);
+
         return index;
 }
 
@@ -981,27 +918,12 @@ static int acpi_processor_setup_cpuidle_states(struct acpi_processor *pr)
                 strncpy(state->desc, cx->desc, CPUIDLE_DESC_LEN);
                 state->exit_latency = cx->latency;
                 state->target_residency = cx->latency * latency_factor;
+                state->enter = acpi_idle_enter;
 
                 state->flags = 0;
-                switch (cx->type) {
-                        case ACPI_STATE_C1:
-
-                        state->enter = acpi_idle_enter_c1;
-                        state->enter_dead = acpi_idle_play_dead;
-                        drv->safe_state_index = count;
-                        break;
-
-                        case ACPI_STATE_C2:
-                        state->enter = acpi_idle_enter_simple;
+                if (cx->type == ACPI_STATE_C1 || cx->type == ACPI_STATE_C2) {
                         state->enter_dead = acpi_idle_play_dead;
                         drv->safe_state_index = count;
-                        break;
-
-                        case ACPI_STATE_C3:
-                        state->enter = pr->flags.bm_check ?
-                                        acpi_idle_enter_bm :
-                                        acpi_idle_enter_simple;
-                        break;
                 }
 
                 count++;
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index dc4d8960684a..bbca7830e18a 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -2544,6 +2544,7 @@ int __init acpi_scan_init(void)
         acpi_pci_link_init();
         acpi_processor_init();
         acpi_lpss_init();
+        acpi_apd_init();
         acpi_cmos_rtc_init();
         acpi_container_init();
         acpi_memory_hotplug_init();
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 8aa9254a387f..7f251dd1a687 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -321,7 +321,7 @@ static struct dmi_system_id acpisleep_dmi_table[] __initdata = {
         {},
 };
 
-static void acpi_sleep_dmi_check(void)
+static void __init acpi_sleep_dmi_check(void)
 {
         int year;
 
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 032db459370f..88a4f99dd2a7 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -522,6 +522,24 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
                 DMI_MATCH(DMI_PRODUCT_NAME, "370R4E/370R4V/370R5E/3570RE/370R5V"),
                 },
         },
+        {
+         /* https://bugzilla.redhat.com/show_bug.cgi?id=1186097 */
+         .callback = video_disable_native_backlight,
+         .ident = "SAMSUNG 3570R/370R/470R/450R/510R/4450RV",
+         .matches = {
+                DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+                DMI_MATCH(DMI_PRODUCT_NAME, "3570R/370R/470R/450R/510R/4450RV"),
+                },
+        },
+        {
+         /* https://bugzilla.redhat.com/show_bug.cgi?id=1094948 */
+         .callback = video_disable_native_backlight,
+         .ident = "SAMSUNG 730U3E/740U3E",
+         .matches = {
+                DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+                DMI_MATCH(DMI_PRODUCT_NAME, "730U3E/740U3E"),
+                },
+        },
 
         {
          /* https://bugzilla.redhat.com/show_bug.cgi?id=1163574 */