Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
authorLinus Torvalds <torvalds@linux-foundation.org>
Tue, 12 Apr 2011 22:24:42 +0000 (15:24 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 12 Apr 2011 22:24:42 +0000 (15:24 -0700)
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  cifs: don't allow mmap'ed pages to be dirtied while under writeback (try #3)
  [CIFS] Warn on requesting default security (ntlm) on mount
  [CIFS] cifs: clarify the meaning of tcpStatus == CifsGood
  cifs: wrap received signature check in srv_mutex
  cifs: clean up various nits in unicode routines (try #2)
  cifs: clean up length checks in check2ndT2
  cifs: set ra_pages in backing_dev_info
  cifs: fix broken BCC check in is_valid_oplock_break
  cifs: always do is_path_accessible check in cifs_mount
  various endian fixes to cifs
  Elminate sparse __CHECK_ENDIAN__ warnings on port conversion
  Max share size is too small
  Allow user names longer than 32 bytes
  cifs: replace /proc/fs/cifs/Experimental with a module parm
  cifs: check for private_data before trying to put it

26 files changed:
Documentation/feature-removal-schedule.txt
arch/x86/xen/enlighten.c
arch/x86/xen/mmu.c
drivers/base/platform.c
drivers/mfd/mfd-core.c
drivers/platform/x86/Kconfig
drivers/platform/x86/acer-wmi.c
drivers/platform/x86/asus-wmi.c
drivers/platform/x86/eeepc-wmi.c
drivers/platform/x86/intel_pmic_gpio.c
drivers/platform/x86/samsung-laptop.c
drivers/platform/x86/sony-laptop.c
drivers/platform/x86/thinkpad_acpi.c
drivers/staging/Kconfig
drivers/staging/Makefile
drivers/staging/samsung-laptop/Kconfig [deleted file]
drivers/staging/samsung-laptop/Makefile [deleted file]
drivers/staging/samsung-laptop/TODO [deleted file]
drivers/staging/samsung-laptop/samsung-laptop.c [deleted file]
drivers/xen/events.c
fs/namespace.c
fs/nfs/write.c
include/linux/mfd/core.h
include/linux/platform_device.h
mm/memory.c
mm/mlock.c

index 274b32d..492e81d 100644 (file)
@@ -387,26 +387,6 @@ Who:       Tejun Heo <tj@kernel.org>
 
 ----------------------------
 
-What:  Support for lcd_switch and display_get in asus-laptop driver
-When:  March 2010
-Why:   These two features use non-standard interfaces. There are the
-       only features that really need multiple path to guess what's
-       the right method name on a specific laptop.
-
-       Removing them will allow to remove a lot of code an significantly
-       clean the drivers.
-
-       This will affect the backlight code which won't be able to know
-       if the backlight is on or off. The platform display file will also be
-       write only (like the one in eeepc-laptop).
-
-       This should'nt affect a lot of user because they usually know
-       when their display is on or off.
-
-Who:   Corentin Chary <corentin.chary@gmail.com>
-
-----------------------------
-
 What:  sysfs-class-rfkill state file
 When:  Feb 2014
 Files: net/rfkill/core.c
index 49dbd78..e3c6a06 100644 (file)
@@ -238,6 +238,7 @@ static void xen_cpuid(unsigned int *ax, unsigned int *bx,
 static __init void xen_init_cpuid_mask(void)
 {
        unsigned int ax, bx, cx, dx;
+       unsigned int xsave_mask;
 
        cpuid_leaf1_edx_mask =
                ~((1 << X86_FEATURE_MCE)  |  /* disable MCE */
@@ -249,24 +250,16 @@ static __init void xen_init_cpuid_mask(void)
                cpuid_leaf1_edx_mask &=
                        ~((1 << X86_FEATURE_APIC) |  /* disable local APIC */
                          (1 << X86_FEATURE_ACPI));  /* disable ACPI */
-
        ax = 1;
-       cx = 0;
        xen_cpuid(&ax, &bx, &cx, &dx);
 
-       /* cpuid claims we support xsave; try enabling it to see what happens */
-       if (cx & (1 << (X86_FEATURE_XSAVE % 32))) {
-               unsigned long cr4;
-
-               set_in_cr4(X86_CR4_OSXSAVE);
-               
-               cr4 = read_cr4();
+       xsave_mask =
+               (1 << (X86_FEATURE_XSAVE % 32)) |
+               (1 << (X86_FEATURE_OSXSAVE % 32));
 
-               if ((cr4 & X86_CR4_OSXSAVE) == 0)
-                       cpuid_leaf1_ecx_mask &= ~(1 << (X86_FEATURE_XSAVE % 32));
-
-               clear_in_cr4(X86_CR4_OSXSAVE);
-       }
+       /* Xen will set CR4.OSXSAVE if supported and not disabled by force */
+       if ((cx & xsave_mask) != xsave_mask)
+               cpuid_leaf1_ecx_mask &= ~xsave_mask; /* disable XSAVE & OSXSAVE */
 }
 
 static void xen_set_debugreg(int reg, unsigned long val)
index c82df6c..a991b57 100644 (file)
@@ -565,13 +565,13 @@ pte_t xen_make_pte_debug(pteval_t pte)
        if (io_page &&
            (xen_initial_domain() || addr >= ISA_END_ADDRESS)) {
                other_addr = pfn_to_mfn(addr >> PAGE_SHIFT) << PAGE_SHIFT;
-               WARN(addr != other_addr,
+               WARN_ONCE(addr != other_addr,
                        "0x%lx is using VM_IO, but it is 0x%lx!\n",
                        (unsigned long)addr, (unsigned long)other_addr);
        } else {
                pteval_t iomap_set = (_pte.pte & PTE_FLAGS_MASK) & _PAGE_IOMAP;
                other_addr = (_pte.pte & PTE_PFN_MASK);
-               WARN((addr == other_addr) && (!io_page) && (!iomap_set),
+               WARN_ONCE((addr == other_addr) && (!io_page) && (!iomap_set),
                        "0x%lx is missing VM_IO (and wasn't fixed)!\n",
                        (unsigned long)addr);
        }
index f051cff..6c3a2bd 100644 (file)
@@ -149,6 +149,7 @@ static void platform_device_release(struct device *dev)
 
        of_device_node_put(&pa->pdev.dev);
        kfree(pa->pdev.dev.platform_data);
+       kfree(pa->pdev.mfd_cell);
        kfree(pa->pdev.resource);
        kfree(pa);
 }
index d01574d..f4c8c84 100644 (file)
@@ -55,6 +55,19 @@ int mfd_cell_disable(struct platform_device *pdev)
 }
 EXPORT_SYMBOL(mfd_cell_disable);
 
+static int mfd_platform_add_cell(struct platform_device *pdev,
+                                const struct mfd_cell *cell)
+{
+       if (!cell)
+               return 0;
+
+       pdev->mfd_cell = kmemdup(cell, sizeof(*cell), GFP_KERNEL);
+       if (!pdev->mfd_cell)
+               return -ENOMEM;
+
+       return 0;
+}
+
 static int mfd_add_device(struct device *parent, int id,
                          const struct mfd_cell *cell,
                          struct resource *mem_base,
@@ -75,7 +88,7 @@ static int mfd_add_device(struct device *parent, int id,
 
        pdev->dev.parent = parent;
 
-       ret = platform_device_add_data(pdev, cell, sizeof(*cell));
+       ret = mfd_platform_add_cell(pdev, cell);
        if (ret)
                goto fail_res;
 
@@ -123,7 +136,6 @@ static int mfd_add_device(struct device *parent, int id,
 
        return 0;
 
-/*     platform_device_del(pdev); */
 fail_res:
        kfree(res);
 fail_device:
index 2ee442c..0485e39 100644 (file)
@@ -187,7 +187,8 @@ config MSI_LAPTOP
        depends on ACPI
        depends on BACKLIGHT_CLASS_DEVICE
        depends on RFKILL
-       depends on SERIO_I8042
+       depends on INPUT && SERIO_I8042
+       select INPUT_SPARSEKMAP
        ---help---
          This is a driver for laptops built by MSI (MICRO-STAR
          INTERNATIONAL):
index 5ea6c34..ac4e7f8 100644 (file)
@@ -89,7 +89,7 @@ MODULE_LICENSE("GPL");
 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
 
 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
-MODULE_ALIAS("wmi:6AF4F258-B401-42Fd-BE91-3D4AC2D7C0D3");
+MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
 
 enum acer_wmi_event_ids {
index efc776c..832a3fd 100644 (file)
@@ -201,8 +201,8 @@ static int asus_wmi_input_init(struct asus_wmi *asus)
        if (!asus->inputdev)
                return -ENOMEM;
 
-       asus->inputdev->name = asus->driver->input_phys;
-       asus->inputdev->phys = asus->driver->input_name;
+       asus->inputdev->name = asus->driver->input_name;
+       asus->inputdev->phys = asus->driver->input_phys;
        asus->inputdev->id.bustype = BUS_HOST;
        asus->inputdev->dev.parent = &asus->platform_device->dev;
 
index 0ddc434..649dcad 100644 (file)
@@ -67,9 +67,11 @@ static const struct key_entry eeepc_wmi_keymap[] = {
        { KE_KEY, 0x82, { KEY_CAMERA } },
        { KE_KEY, 0x83, { KEY_CAMERA_ZOOMIN } },
        { KE_KEY, 0x88, { KEY_WLAN } },
+       { KE_KEY, 0xbd, { KEY_CAMERA } },
        { KE_KEY, 0xcc, { KEY_SWITCHVIDEOMODE } },
        { KE_KEY, 0xe0, { KEY_PROG1 } }, /* Task Manager */
        { KE_KEY, 0xe1, { KEY_F14 } }, /* Change Resolution */
+       { KE_KEY, 0xe8, { KEY_SCREENLOCK } },
        { KE_KEY, 0xe9, { KEY_BRIGHTNESS_ZERO } },
        { KE_KEY, 0xeb, { KEY_CAMERA_ZOOMOUT } },
        { KE_KEY, 0xec, { KEY_CAMERA_UP } },
index d653104..7bbb538 100644 (file)
@@ -74,6 +74,19 @@ struct pmic_gpio {
        u32                     trigger_type;
 };
 
+static void pmic_program_irqtype(int gpio, int type)
+{
+       if (type & IRQ_TYPE_EDGE_RISING)
+               intel_scu_ipc_update_register(GPIO0 + gpio, 0x20, 0x20);
+       else
+               intel_scu_ipc_update_register(GPIO0 + gpio, 0x00, 0x20);
+
+       if (type & IRQ_TYPE_EDGE_FALLING)
+               intel_scu_ipc_update_register(GPIO0 + gpio, 0x10, 0x10);
+       else
+               intel_scu_ipc_update_register(GPIO0 + gpio, 0x00, 0x10);
+};
+
 static int pmic_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 {
        if (offset > 8) {
@@ -166,16 +179,38 @@ static int pmic_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
        return pg->irq_base + offset;
 }
 
+static void pmic_bus_lock(struct irq_data *data)
+{
+       struct pmic_gpio *pg = irq_data_get_irq_chip_data(data);
+
+       mutex_lock(&pg->buslock);
+}
+
+static void pmic_bus_sync_unlock(struct irq_data *data)
+{
+       struct pmic_gpio *pg = irq_data_get_irq_chip_data(data);
+
+       if (pg->update_type) {
+               unsigned int gpio = pg->update_type & ~GPIO_UPDATE_TYPE;
+
+               pmic_program_irqtype(gpio, pg->trigger_type);
+               pg->update_type = 0;
+       }
+       mutex_unlock(&pg->buslock);
+}
+
 /* the gpiointr register is read-clear, so just do nothing. */
 static void pmic_irq_unmask(struct irq_data *data) { }
 
 static void pmic_irq_mask(struct irq_data *data) { }
 
 static struct irq_chip pmic_irqchip = {
-       .name           = "PMIC-GPIO",
-       .irq_mask       = pmic_irq_mask,
-       .irq_unmask     = pmic_irq_unmask,
-       .irq_set_type   = pmic_irq_type,
+       .name                   = "PMIC-GPIO",
+       .irq_mask               = pmic_irq_mask,
+       .irq_unmask             = pmic_irq_unmask,
+       .irq_set_type           = pmic_irq_type,
+       .irq_bus_lock           = pmic_irq_buslock,
+       .irq_bus_sync_unlock    = pmic_bus_sync_unlock,
 };
 
 static irqreturn_t pmic_irq_handler(int irq, void *data)
index de434c6..d347116 100644 (file)
@@ -570,6 +570,16 @@ static struct dmi_system_id __initdata samsung_dmi_table[] = {
                },
                .callback = dmi_check_cb,
        },
+       {
+               .ident = "R410 Plus",
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR,
+                                       "SAMSUNG ELECTRONICS CO., LTD."),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "R410P"),
+                       DMI_MATCH(DMI_BOARD_NAME, "R460"),
+               },
+               .callback = dmi_check_cb,
+       },
        {
                .ident = "R518",
                .matches = {
@@ -591,12 +601,12 @@ static struct dmi_system_id __initdata samsung_dmi_table[] = {
                .callback = dmi_check_cb,
        },
        {
-               .ident = "N150/N210/N220",
+               .ident = "N150/N210/N220/N230",
                .matches = {
                        DMI_MATCH(DMI_SYS_VENDOR,
                                        "SAMSUNG ELECTRONICS CO., LTD."),
-                       DMI_MATCH(DMI_PRODUCT_NAME, "N150/N210/N220"),
-                       DMI_MATCH(DMI_BOARD_NAME, "N150/N210/N220"),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "N150/N210/N220/N230"),
+                       DMI_MATCH(DMI_BOARD_NAME, "N150/N210/N220/N230"),
                },
                .callback = dmi_check_cb,
        },
@@ -771,6 +781,7 @@ static int __init samsung_init(void)
 
        /* create a backlight device to talk to this one */
        memset(&props, 0, sizeof(struct backlight_properties));
+       props.type = BACKLIGHT_PLATFORM;
        props.max_brightness = sabi_config->max_brightness;
        backlight_device = backlight_device_register("samsung", &sdev->dev,
                                                     NULL, &backlight_ops,
index e642f5f..8f709ae 100644 (file)
@@ -138,6 +138,8 @@ MODULE_PARM_DESC(kbd_backlight_timeout,
                 "1 for 30 seconds, 2 for 60 seconds and 3 to disable timeout "
                 "(default: 0)");
 
+static void sony_nc_kbd_backlight_resume(void);
+
 enum sony_nc_rfkill {
        SONY_WIFI,
        SONY_BLUETOOTH,
@@ -771,11 +773,6 @@ static int sony_nc_handles_setup(struct platform_device *pd)
        if (!handles)
                return -ENOMEM;
 
-       sysfs_attr_init(&handles->devattr.attr);
-       handles->devattr.attr.name = "handles";
-       handles->devattr.attr.mode = S_IRUGO;
-       handles->devattr.show = sony_nc_handles_show;
-
        for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
                if (!acpi_callsetfunc(sony_nc_acpi_handle,
                                        "SN00", i + 0x20, &result)) {
@@ -785,11 +782,18 @@ static int sony_nc_handles_setup(struct platform_device *pd)
                }
        }
 
-       /* allow reading capabilities via sysfs */
-       if (device_create_file(&pd->dev, &handles->devattr)) {
-               kfree(handles);
-               handles = NULL;
-               return -1;
+       if (debug) {
+               sysfs_attr_init(&handles->devattr.attr);
+               handles->devattr.attr.name = "handles";
+               handles->devattr.attr.mode = S_IRUGO;
+               handles->devattr.show = sony_nc_handles_show;
+
+               /* allow reading capabilities via sysfs */
+               if (device_create_file(&pd->dev, &handles->devattr)) {
+                       kfree(handles);
+                       handles = NULL;
+                       return -1;
+               }
        }
 
        return 0;
@@ -798,7 +802,8 @@ static int sony_nc_handles_setup(struct platform_device *pd)
 static int sony_nc_handles_cleanup(struct platform_device *pd)
 {
        if (handles) {
-               device_remove_file(&pd->dev, &handles->devattr);
+               if (debug)
+                       device_remove_file(&pd->dev, &handles->devattr);
                kfree(handles);
                handles = NULL;
        }
@@ -808,6 +813,11 @@ static int sony_nc_handles_cleanup(struct platform_device *pd)
 static int sony_find_snc_handle(int handle)
 {
        int i;
+
+       /* not initialized yet, return early */
+       if (!handles)
+               return -1;
+
        for (i = 0; i < 0x10; i++) {
                if (handles->cap[i] == handle) {
                        dprintk("found handle 0x%.4x (offset: 0x%.2x)\n",
@@ -1168,6 +1178,9 @@ static int sony_nc_resume(struct acpi_device *device)
        /* re-read rfkill state */
        sony_nc_rfkill_update();
 
+       /* restore kbd backlight states */
+       sony_nc_kbd_backlight_resume();
+
        return 0;
 }
 
@@ -1355,6 +1368,7 @@ out_no_enum:
 #define KBDBL_HANDLER  0x137
 #define KBDBL_PRESENT  0xB00
 #define        SET_MODE        0xC00
+#define SET_STATE      0xD00
 #define SET_TIMEOUT    0xE00
 
 struct kbd_backlight {
@@ -1377,6 +1391,10 @@ static ssize_t __sony_nc_kbd_backlight_mode_set(u8 value)
                                (value << 0x10) | SET_MODE, &result))
                return -EIO;
 
+       /* Try to turn the light on/off immediately */
+       sony_call_snc_handle(KBDBL_HANDLER, (value << 0x10) | SET_STATE,
+                       &result);
+
        kbdbl_handle->mode = value;
 
        return 0;
@@ -1458,7 +1476,7 @@ static int sony_nc_kbd_backlight_setup(struct platform_device *pd)
 {
        int result;
 
-       if (sony_call_snc_handle(0x137, KBDBL_PRESENT, &result))
+       if (sony_call_snc_handle(KBDBL_HANDLER, KBDBL_PRESENT, &result))
                return 0;
        if (!(result & 0x02))
                return 0;
@@ -1501,13 +1519,36 @@ outkzalloc:
 static int sony_nc_kbd_backlight_cleanup(struct platform_device *pd)
 {
        if (kbdbl_handle) {
+               int result;
+
                device_remove_file(&pd->dev, &kbdbl_handle->mode_attr);
                device_remove_file(&pd->dev, &kbdbl_handle->timeout_attr);
+
+               /* restore the default hw behaviour */
+               sony_call_snc_handle(KBDBL_HANDLER, 0x1000 | SET_MODE, &result);
+               sony_call_snc_handle(KBDBL_HANDLER, SET_TIMEOUT, &result);
+
                kfree(kbdbl_handle);
        }
        return 0;
 }
 
+static void sony_nc_kbd_backlight_resume(void)
+{
+       int ignore = 0;
+
+       if (!kbdbl_handle)
+               return;
+
+       if (kbdbl_handle->mode == 0)
+               sony_call_snc_handle(KBDBL_HANDLER, SET_MODE, &ignore);
+
+       if (kbdbl_handle->timeout != 0)
+               sony_call_snc_handle(KBDBL_HANDLER,
+                               (kbdbl_handle->timeout << 0x10) | SET_TIMEOUT,
+                               &ignore);
+}
+
 static void sony_nc_backlight_setup(void)
 {
        acpi_handle unused;
index a08561f..efb3b6b 100644 (file)
@@ -8618,8 +8618,7 @@ static bool __pure __init tpacpi_is_valid_fw_id(const char* const s,
                tpacpi_is_fw_digit(s[1]) &&
                s[2] == t && s[3] == 'T' &&
                tpacpi_is_fw_digit(s[4]) &&
-               tpacpi_is_fw_digit(s[5]) &&
-               s[6] == 'W' && s[7] == 'W';
+               tpacpi_is_fw_digit(s[5]);
 }
 
 /* returns 0 - probe ok, or < 0 - probe error.
index dca4a0b..e3786f1 100644 (file)
@@ -131,8 +131,6 @@ source "drivers/staging/wlags49_h2/Kconfig"
 
 source "drivers/staging/wlags49_h25/Kconfig"
 
-source "drivers/staging/samsung-laptop/Kconfig"
-
 source "drivers/staging/sm7xx/Kconfig"
 
 source "drivers/staging/dt3155v4l/Kconfig"
index eb93012..f0d5c53 100644 (file)
@@ -48,7 +48,6 @@ obj-$(CONFIG_XVMALLOC)                += zram/
 obj-$(CONFIG_ZCACHE)           += zcache/
 obj-$(CONFIG_WLAGS49_H2)       += wlags49_h2/
 obj-$(CONFIG_WLAGS49_H25)      += wlags49_h25/
-obj-$(CONFIG_SAMSUNG_LAPTOP)   += samsung-laptop/
 obj-$(CONFIG_FB_SM7XX)         += sm7xx/
 obj-$(CONFIG_VIDEO_DT3155)     += dt3155v4l/
 obj-$(CONFIG_CRYSTALHD)                += crystalhd/
diff --git a/drivers/staging/samsung-laptop/Kconfig b/drivers/staging/samsung-laptop/Kconfig
deleted file mode 100644 (file)
index f27c608..0000000
+++ /dev/null
@@ -1,10 +0,0 @@
-config SAMSUNG_LAPTOP
-       tristate "Samsung Laptop driver"
-       default n
-       depends on RFKILL && BACKLIGHT_CLASS_DEVICE && X86
-       help
-         This module implements a driver for the N128 Samsung Laptop
-         providing control over the Wireless LED and the LCD backlight
-
-         To compile this driver as a module, choose
-         M here: the module will be called samsung-laptop.
diff --git a/drivers/staging/samsung-laptop/Makefile b/drivers/staging/samsung-laptop/Makefile
deleted file mode 100644 (file)
index 3c6f420..0000000
+++ /dev/null
@@ -1 +0,0 @@
-obj-$(CONFIG_SAMSUNG_LAPTOP)   += samsung-laptop.o
diff --git a/drivers/staging/samsung-laptop/TODO b/drivers/staging/samsung-laptop/TODO
deleted file mode 100644 (file)
index f7a6d58..0000000
+++ /dev/null
@@ -1,5 +0,0 @@
-TODO:
-       - review from other developers
-       - figure out ACPI video issues
-
-Please send patches to Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/samsung-laptop/samsung-laptop.c b/drivers/staging/samsung-laptop/samsung-laptop.c
deleted file mode 100644 (file)
index 2529446..0000000
+++ /dev/null
@@ -1,843 +0,0 @@
-/*
- * Samsung Laptop driver
- *
- * Copyright (C) 2009,2011 Greg Kroah-Hartman (gregkh@suse.de)
- * Copyright (C) 2009,2011 Novell Inc.
- *
- * 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.
- *
- */
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/delay.h>
-#include <linux/pci.h>
-#include <linux/backlight.h>
-#include <linux/fb.h>
-#include <linux/dmi.h>
-#include <linux/platform_device.h>
-#include <linux/rfkill.h>
-
-/*
- * This driver is needed because a number of Samsung laptops do not hook
- * their control settings through ACPI.  So we have to poke around in the
- * BIOS to do things like brightness values, and "special" key controls.
- */
-
-/*
- * We have 0 - 8 as valid brightness levels.  The specs say that level 0 should
- * be reserved by the BIOS (which really doesn't make much sense), we tell
- * userspace that the value is 0 - 7 and then just tell the hardware 1 - 8
- */
-#define MAX_BRIGHT     0x07
-
-
-#define SABI_IFACE_MAIN                        0x00
-#define SABI_IFACE_SUB                 0x02
-#define SABI_IFACE_COMPLETE            0x04
-#define SABI_IFACE_DATA                        0x05
-
-/* Structure to get data back to the calling function */
-struct sabi_retval {
-       u8 retval[20];
-};
-
-struct sabi_header_offsets {
-       u8 port;
-       u8 re_mem;
-       u8 iface_func;
-       u8 en_mem;
-       u8 data_offset;
-       u8 data_segment;
-};
-
-struct sabi_commands {
-       /*
-        * Brightness is 0 - 8, as described above.
-        * Value 0 is for the BIOS to use
-        */
-       u8 get_brightness;
-       u8 set_brightness;
-
-       /*
-        * first byte:
-        * 0x00 - wireless is off
-        * 0x01 - wireless is on
-        * second byte:
-        * 0x02 - 3G is off
-        * 0x03 - 3G is on
-        * TODO, verify 3G is correct, that doesn't seem right...
-        */
-       u8 get_wireless_button;
-       u8 set_wireless_button;
-
-       /* 0 is off, 1 is on */
-       u8 get_backlight;
-       u8 set_backlight;
-
-       /*
-        * 0x80 or 0x00 - no action
-        * 0x81 - recovery key pressed
-        */
-       u8 get_recovery_mode;
-       u8 set_recovery_mode;
-
-       /*
-        * on seclinux: 0 is low, 1 is high,
-        * on swsmi: 0 is normal, 1 is silent, 2 is turbo
-        */
-       u8 get_performance_level;
-       u8 set_performance_level;
-
-       /*
-        * Tell the BIOS that Linux is running on this machine.
-        * 81 is on, 80 is off
-        */
-       u8 set_linux;
-};
-
-struct sabi_performance_level {
-       const char *name;
-       u8 value;
-};
-
-struct sabi_config {
-       const char *test_string;
-       u16 main_function;
-       const struct sabi_header_offsets header_offsets;
-       const struct sabi_commands commands;
-       const struct sabi_performance_level performance_levels[4];
-       u8 min_brightness;
-       u8 max_brightness;
-};
-
-static const struct sabi_config sabi_configs[] = {
-       {
-               .test_string = "SECLINUX",
-
-               .main_function = 0x4c49,
-
-               .header_offsets = {
-                       .port = 0x00,
-                       .re_mem = 0x02,
-                       .iface_func = 0x03,
-                       .en_mem = 0x04,
-                       .data_offset = 0x05,
-                       .data_segment = 0x07,
-               },
-
-               .commands = {
-                       .get_brightness = 0x00,
-                       .set_brightness = 0x01,
-
-                       .get_wireless_button = 0x02,
-                       .set_wireless_button = 0x03,
-
-                       .get_backlight = 0x04,
-                       .set_backlight = 0x05,
-
-                       .get_recovery_mode = 0x06,
-                       .set_recovery_mode = 0x07,
-
-                       .get_performance_level = 0x08,
-                       .set_performance_level = 0x09,
-
-                       .set_linux = 0x0a,
-               },
-
-               .performance_levels = {
-                       {
-                               .name = "silent",
-                               .value = 0,
-                       },
-                       {
-                               .name = "normal",
-                               .value = 1,
-                       },
-                       { },
-               },
-               .min_brightness = 1,
-               .max_brightness = 8,
-       },
-       {
-               .test_string = "SwSmi@",
-
-               .main_function = 0x5843,
-
-               .header_offsets = {
-                       .port = 0x00,
-                       .re_mem = 0x04,
-                       .iface_func = 0x02,
-                       .en_mem = 0x03,
-                       .data_offset = 0x05,
-                       .data_segment = 0x07,
-               },
-
-               .commands = {
-                       .get_brightness = 0x10,
-                       .set_brightness = 0x11,
-
-                       .get_wireless_button = 0x12,
-                       .set_wireless_button = 0x13,
-
-                       .get_backlight = 0x2d,
-                       .set_backlight = 0x2e,
-
-                       .get_recovery_mode = 0xff,
-                       .set_recovery_mode = 0xff,
-
-                       .get_performance_level = 0x31,
-                       .set_performance_level = 0x32,
-
-                       .set_linux = 0xff,
-               },
-
-               .performance_levels = {
-                       {
-                               .name = "normal",
-                               .value = 0,
-                       },
-                       {
-                               .name = "silent",
-                               .value = 1,
-                       },
-                       {
-                               .name = "overclock",
-                               .value = 2,
-                       },
-                       { },
-               },
-               .min_brightness = 0,
-               .max_brightness = 8,
-       },
-       { },
-};
-
-static const struct sabi_config *sabi_config;
-
-static void __iomem *sabi;
-static void __iomem *sabi_iface;
-static void __iomem *f0000_segment;
-static struct backlight_device *backlight_device;
-static struct mutex sabi_mutex;
-static struct platform_device *sdev;
-static struct rfkill *rfk;
-
-static int force;
-module_param(force, bool, 0);
-MODULE_PARM_DESC(force,
-               "Disable the DMI check and forces the driver to be loaded");
-
-static int debug;
-module_param(debug, bool, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(debug, "Debug enabled or not");
-
-static int sabi_get_command(u8 command, struct sabi_retval *sretval)
-{
-       int retval = 0;
-       u16 port = readw(sabi + sabi_config->header_offsets.port);
-       u8 complete, iface_data;
-
-       mutex_lock(&sabi_mutex);
-
-       /* enable memory to be able to write to it */
-       outb(readb(sabi + sabi_config->header_offsets.en_mem), port);
-
-       /* write out the command */
-       writew(sabi_config->main_function, sabi_iface + SABI_IFACE_MAIN);
-       writew(command, sabi_iface + SABI_IFACE_SUB);
-       writeb(0, sabi_iface + SABI_IFACE_COMPLETE);
-       outb(readb(sabi + sabi_config->header_offsets.iface_func), port);
-
-       /* write protect memory to make it safe */
-       outb(readb(sabi + sabi_config->header_offsets.re_mem), port);
-
-       /* see if the command actually succeeded */
-       complete = readb(sabi_iface + SABI_IFACE_COMPLETE);
-       iface_data = readb(sabi_iface + SABI_IFACE_DATA);
-       if (complete != 0xaa || iface_data == 0xff) {
-               pr_warn("SABI get command 0x%02x failed with completion flag 0x%02x and data 0x%02x\n",
-                       command, complete, iface_data);
-               retval = -EINVAL;
-               goto exit;
-       }
-       /*
-        * Save off the data into a structure so the caller use it.
-        * Right now we only want the first 4 bytes,
-        * There are commands that need more, but not for the ones we
-        * currently care about.
-        */
-       sretval->retval[0] = readb(sabi_iface + SABI_IFACE_DATA);
-       sretval->retval[1] = readb(sabi_iface + SABI_IFACE_DATA + 1);
-       sretval->retval[2] = readb(sabi_iface + SABI_IFACE_DATA + 2);
-       sretval->retval[3] = readb(sabi_iface + SABI_IFACE_DATA + 3);
-
-exit:
-       mutex_unlock(&sabi_mutex);
-       return retval;
-
-}
-
-static int sabi_set_command(u8 command, u8 data)
-{
-       int retval = 0;
-       u16 port = readw(sabi + sabi_config->header_offsets.port);
-       u8 complete, iface_data;
-
-       mutex_lock(&sabi_mutex);
-
-       /* enable memory to be able to write to it */
-       outb(readb(sabi + sabi_config->header_offsets.en_mem), port);
-
-       /* write out the command */
-       writew(sabi_config->main_function, sabi_iface + SABI_IFACE_MAIN);
-       writew(command, sabi_iface + SABI_IFACE_SUB);
-       writeb(0, sabi_iface + SABI_IFACE_COMPLETE);
-       writeb(data, sabi_iface + SABI_IFACE_DATA);
-       outb(readb(sabi + sabi_config->header_offsets.iface_func), port);
-
-       /* write protect memory to make it safe */
-       outb(readb(sabi + sabi_config->header_offsets.re_mem), port);
-
-       /* see if the command actually succeeded */
-       complete = readb(sabi_iface + SABI_IFACE_COMPLETE);
-       iface_data = readb(sabi_iface + SABI_IFACE_DATA);
-       if (complete != 0xaa || iface_data == 0xff) {
-               pr_warn("SABI set command 0x%02x failed with completion flag 0x%02x and data 0x%02x\n",
-                      command, complete, iface_data);
-               retval = -EINVAL;
-       }
-
-       mutex_unlock(&sabi_mutex);
-       return retval;
-}
-
-static void test_backlight(void)
-{
-       struct sabi_retval sretval;
-
-       sabi_get_command(sabi_config->commands.get_backlight, &sretval);
-       printk(KERN_DEBUG "backlight = 0x%02x\n", sretval.retval[0]);
-
-       sabi_set_command(sabi_config->commands.set_backlight, 0);
-       printk(KERN_DEBUG "backlight should be off\n");
-
-       sabi_get_command(sabi_config->commands.get_backlight, &sretval);
-       printk(KERN_DEBUG "backlight = 0x%02x\n", sretval.retval[0]);
-
-       msleep(1000);
-
-       sabi_set_command(sabi_config->commands.set_backlight, 1);
-       printk(KERN_DEBUG "backlight should be on\n");
-
-       sabi_get_command(sabi_config->commands.get_backlight, &sretval);
-       printk(KERN_DEBUG "backlight = 0x%02x\n", sretval.retval[0]);
-}
-
-static void test_wireless(void)
-{
-       struct sabi_retval sretval;
-
-       sabi_get_command(sabi_config->commands.get_wireless_button, &sretval);
-       printk(KERN_DEBUG "wireless led = 0x%02x\n", sretval.retval[0]);
-
-       sabi_set_command(sabi_config->commands.set_wireless_button, 0);
-       printk(KERN_DEBUG "wireless led should be off\n");
-
-       sabi_get_command(sabi_config->commands.get_wireless_button, &sretval);
-       printk(KERN_DEBUG "wireless led = 0x%02x\n", sretval.retval[0]);
-
-       msleep(1000);
-
-       sabi_set_command(sabi_config->commands.set_wireless_button, 1);
-       printk(KERN_DEBUG "wireless led should be on\n");
-
-       sabi_get_command(sabi_config->commands.get_wireless_button, &sretval);
-       printk(KERN_DEBUG "wireless led = 0x%02x\n", sretval.retval[0]);
-}
-
-static u8 read_brightness(void)
-{
-       struct sabi_retval sretval;
-       int user_brightness = 0;
-       int retval;
-
-       retval = sabi_get_command(sabi_config->commands.get_brightness,
-                                 &sretval);
-       if (!retval) {
-               user_brightness = sretval.retval[0];
-               if (user_brightness != 0)
-                       user_brightness -= sabi_config->min_brightness;
-       }
-       return user_brightness;
-}
-
-static void set_brightness(u8 user_brightness)
-{
-       u8 user_level = user_brightness - sabi_config->min_brightness;
-
-       sabi_set_command(sabi_config->commands.set_brightness, user_level);
-}
-
-static int get_brightness(struct backlight_device *bd)
-{
-       return (int)read_brightness();
-}
-
-static int update_status(struct backlight_device *bd)
-{
-       set_brightness(bd->props.brightness);
-
-       if (bd->props.power == FB_BLANK_UNBLANK)
-               sabi_set_command(sabi_config->commands.set_backlight, 1);
-       else
-               sabi_set_command(sabi_config->commands.set_backlight, 0);
-       return 0;
-}
-
-static const struct backlight_ops backlight_ops = {
-       .get_brightness = get_brightness,
-       .update_status  = update_status,
-};
-
-static int rfkill_set(void *data, bool blocked)
-{
-       /* Do something with blocked...*/
-       /*
-        * blocked == false is on
-        * blocked == true is off
-        */
-       if (blocked)
-               sabi_set_command(sabi_config->commands.set_wireless_button, 0);
-       else
-               sabi_set_command(sabi_config->commands.set_wireless_button, 1);
-
-       return 0;
-}
-
-static struct rfkill_ops rfkill_ops = {
-       .set_block = rfkill_set,
-};
-
-static int init_wireless(struct platform_device *sdev)
-{
-       int retval;
-
-       rfk = rfkill_alloc("samsung-wifi", &sdev->dev, RFKILL_TYPE_WLAN,
-                          &rfkill_ops, NULL);
-       if (!rfk)
-               return -ENOMEM;
-
-       retval = rfkill_register(rfk);
-       if (retval) {
-               rfkill_destroy(rfk);
-               return -ENODEV;
-       }
-
-       return 0;
-}
-
-static void destroy_wireless(void)
-{
-       rfkill_unregister(rfk);
-       rfkill_destroy(rfk);
-}
-
-static ssize_t get_performance_level(struct device *dev,
-                                    struct device_attribute *attr, char *buf)
-{
-       struct sabi_retval sretval;
-       int retval;
-       int i;
-
-       /* Read the state */
-       retval = sabi_get_command(sabi_config->commands.get_performance_level,
-                                 &sretval);
-       if (retval)
-               return retval;
-
-       /* The logic is backwards, yeah, lots of fun... */
-       for (i = 0; sabi_config->performance_levels[i].name; ++i) {
-               if (sretval.retval[0] == sabi_config->performance_levels[i].value)
-                       return sprintf(buf, "%s\n", sabi_config->performance_levels[i].name);
-       }
-       return sprintf(buf, "%s\n", "unknown");
-}
-
-static ssize_t set_performance_level(struct device *dev,
-                               struct device_attribute *attr, const char *buf,
-                               size_t count)
-{
-       if (count >= 1) {
-               int i;
-               for (i = 0; sabi_config->performance_levels[i].name; ++i) {
-                       const struct sabi_performance_level *level =
-                               &sabi_config->performance_levels[i];
-                       if (!strncasecmp(level->name, buf, strlen(level->name))) {
-                               sabi_set_command(sabi_config->commands.set_performance_level,
-                                                level->value);
-                               break;
-                       }
-               }
-               if (!sabi_config->performance_levels[i].name)
-                       return -EINVAL;
-       }
-       return count;
-}
-static DEVICE_ATTR(performance_level, S_IWUSR | S_IRUGO,
-                  get_performance_level, set_performance_level);
-
-
-static int __init dmi_check_cb(const struct dmi_system_id *id)
-{
-       pr_info("found laptop model '%s'\n",
-               id->ident);
-       return 0;
-}
-
-static struct dmi_system_id __initdata samsung_dmi_table[] = {
-       {
-               .ident = "N128",
-               .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR,
-                                       "SAMSUNG ELECTRONICS CO., LTD."),
-                       DMI_MATCH(DMI_PRODUCT_NAME, "N128"),
-                       DMI_MATCH(DMI_BOARD_NAME, "N128"),
-               },
-               .callback = dmi_check_cb,
-       },
-       {
-               .ident = "N130",
-               .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR,
-                                       "SAMSUNG ELECTRONICS CO., LTD."),
-                       DMI_MATCH(DMI_PRODUCT_NAME, "N130"),
-                       DMI_MATCH(DMI_BOARD_NAME, "N130"),
-               },
-               .callback = dmi_check_cb,
-       },
-       {
-               .ident = "X125",
-               .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR,
-                                       "SAMSUNG ELECTRONICS CO., LTD."),
-                       DMI_MATCH(DMI_PRODUCT_NAME, "X125"),
-                       DMI_MATCH(DMI_BOARD_NAME, "X125"),
-               },
-               .callback = dmi_check_cb,
-       },
-       {
-               .ident = "X120/X170",
-               .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR,
-                                       "SAMSUNG ELECTRONICS CO., LTD."),
-                       DMI_MATCH(DMI_PRODUCT_NAME, "X120/X170"),
-                       DMI_MATCH(DMI_BOARD_NAME, "X120/X170"),
-               },
-               .callback = dmi_check_cb,
-       },
-       {
-               .ident = "NC10",
-               .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR,
-                                       "SAMSUNG ELECTRONICS CO., LTD."),
-                       DMI_MATCH(DMI_PRODUCT_NAME, "NC10"),
-                       DMI_MATCH(DMI_BOARD_NAME, "NC10"),
-               },
-               .callback = dmi_check_cb,
-       },
-               {
-               .ident = "NP-Q45",
-               .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR,
-                                       "SAMSUNG ELECTRONICS CO., LTD."),
-                       DMI_MATCH(DMI_PRODUCT_NAME, "SQ45S70S"),
-                       DMI_MATCH(DMI_BOARD_NAME, "SQ45S70S"),
-               },
-               .callback = dmi_check_cb,
-               },
-       {
-               .ident = "X360",
-               .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR,
-                                       "SAMSUNG ELECTRONICS CO., LTD."),
-                       DMI_MATCH(DMI_PRODUCT_NAME, "X360"),
-                       DMI_MATCH(DMI_BOARD_NAME, "X360"),
-               },
-               .callback = dmi_check_cb,
-       },
-       {
-               .ident = "R410 Plus",
-               .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR,
-                                       "SAMSUNG ELECTRONICS CO., LTD."),
-                       DMI_MATCH(DMI_PRODUCT_NAME, "R410P"),
-                       DMI_MATCH(DMI_BOARD_NAME, "R460"),
-               },
-               .callback = dmi_check_cb,
-       },
-       {
-               .ident = "R518",
-               .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR,
-                                       "SAMSUNG ELECTRONICS CO., LTD."),
-                       DMI_MATCH(DMI_PRODUCT_NAME, "R518"),
-                       DMI_MATCH(DMI_BOARD_NAME, "R518"),
-               },
-               .callback = dmi_check_cb,
-       },
-       {
-               .ident = "R519/R719",
-               .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR,
-                                       "SAMSUNG ELECTRONICS CO., LTD."),
-                       DMI_MATCH(DMI_PRODUCT_NAME, "R519/R719"),
-                       DMI_MATCH(DMI_BOARD_NAME, "R519/R719"),
-               },
-               .callback = dmi_check_cb,
-       },
-       {
-               .ident = "N150/N210/N220/N230",
-               .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR,
-                                       "SAMSUNG ELECTRONICS CO., LTD."),
-                       DMI_MATCH(DMI_PRODUCT_NAME, "N150/N210/N220/N230"),
-                       DMI_MATCH(DMI_BOARD_NAME, "N150/N210/N220/N230"),
-               },
-               .callback = dmi_check_cb,
-       },
-       {
-               .ident = "N150P/N210P/N220P",
-               .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR,
-                                       "SAMSUNG ELECTRONICS CO., LTD."),
-                       DMI_MATCH(DMI_PRODUCT_NAME, "N150P/N210P/N220P"),
-                       DMI_MATCH(DMI_BOARD_NAME, "N150P/N210P/N220P"),
-               },
-               .callback = dmi_check_cb,
-       },
-       {
-               .ident = "R530/R730",
-               .matches = {
-                     DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
-                     DMI_MATCH(DMI_PRODUCT_NAME, "R530/R730"),
-                     DMI_MATCH(DMI_BOARD_NAME, "R530/R730"),
-               },
-               .callback = dmi_check_cb,
-       },
-       {
-               .ident = "NF110/NF210/NF310",
-               .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
-                       DMI_MATCH(DMI_PRODUCT_NAME, "NF110/NF210/NF310"),
-                       DMI_MATCH(DMI_BOARD_NAME, "NF110/NF210/NF310"),
-               },
-               .callback = dmi_check_cb,
-       },
-       {
-               .ident = "N145P/N250P/N260P",
-               .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
-                       DMI_MATCH(DMI_PRODUCT_NAME, "N145P/N250P/N260P"),
-                       DMI_MATCH(DMI_BOARD_NAME, "N145P/N250P/N260P"),
-               },
-               .callback = dmi_check_cb,
-       },
-       {
-               .ident = "R70/R71",
-               .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR,
-                                       "SAMSUNG ELECTRONICS CO., LTD."),
-                       DMI_MATCH(DMI_PRODUCT_NAME, "R70/R71"),
-                       DMI_MATCH(DMI_BOARD_NAME, "R70/R71"),
-               },
-               .callback = dmi_check_cb,
-       },
-       {
-               .ident = "P460",
-               .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
-                       DMI_MATCH(DMI_PRODUCT_NAME, "P460"),
-                       DMI_MATCH(DMI_BOARD_NAME, "P460"),
-               },
-               .callback = dmi_check_cb,
-       },
-       { },
-};
-MODULE_DEVICE_TABLE(dmi, samsung_dmi_table);
-
-static int find_signature(void __iomem *memcheck, const char *testStr)
-{
-       int i = 0;
-       int loca;
-
-       for (loca = 0; loca < 0xffff; loca++) {
-               char temp = readb(memcheck + loca);
-
-               if (temp == testStr[i]) {
-                       if (i == strlen(testStr)-1)
-                               break;
-                       ++i;
-               } else {
-                       i = 0;
-               }
-       }
-       return loca;
-}
-
-static int __init samsung_init(void)
-{
-       struct backlight_properties props;
-       struct sabi_retval sretval;
-       unsigned int ifaceP;
-       int i;
-       int loca;
-       int retval;
-
-       mutex_init(&sabi_mutex);
-
-       if (!force && !dmi_check_system(samsung_dmi_table))
-               return -ENODEV;
-
-       f0000_segment = ioremap_nocache(0xf0000, 0xffff);
-       if (!f0000_segment) {
-               pr_err("Can't map the segment at 0xf0000\n");
-               return -EINVAL;
-       }
-
-       /* Try to find one of the signatures in memory to find the header */
-       for (i = 0; sabi_configs[i].test_string != 0; ++i) {
-               sabi_config = &sabi_configs[i];
-               loca = find_signature(f0000_segment, sabi_config->test_string);
-               if (loca != 0xffff)
-                       break;
-       }
-
-       if (loca == 0xffff) {
-               pr_err("This computer does not support SABI\n");
-               goto error_no_signature;
-       }
-
-       /* point to the SMI port Number */
-       loca += 1;
-       sabi = (f0000_segment + loca);
-
-       if (debug) {
-               printk(KERN_DEBUG "This computer supports SABI==%x\n",
-                       loca + 0xf0000 - 6);
-               printk(KERN_DEBUG "SABI header:\n");
-               printk(KERN_DEBUG " SMI Port Number = 0x%04x\n",
-                       readw(sabi + sabi_config->header_offsets.port));
-               printk(KERN_DEBUG " SMI Interface Function = 0x%02x\n",
-                       readb(sabi + sabi_config->header_offsets.iface_func));
-               printk(KERN_DEBUG " SMI enable memory buffer = 0x%02x\n",
-                       readb(sabi + sabi_config->header_offsets.en_mem));
-               printk(KERN_DEBUG " SMI restore memory buffer = 0x%02x\n",
-                       readb(sabi + sabi_config->header_offsets.re_mem));
-               printk(KERN_DEBUG " SABI data offset = 0x%04x\n",
-                       readw(sabi + sabi_config->header_offsets.data_offset));
-               printk(KERN_DEBUG " SABI data segment = 0x%04x\n",
-                       readw(sabi + sabi_config->header_offsets.data_segment));
-       }
-
-       /* Get a pointer to the SABI Interface */
-       ifaceP = (readw(sabi + sabi_config->header_offsets.data_segment) & 0x0ffff) << 4;
-       ifaceP += readw(sabi + sabi_config->header_offsets.data_offset) & 0x0ffff;
-       sabi_iface = ioremap_nocache(ifaceP, 16);
-       if (!sabi_iface) {
-               pr_err("Can't remap %x\n", ifaceP);
-               goto exit;
-       }
-       if (debug) {
-               printk(KERN_DEBUG "ifaceP = 0x%08x\n", ifaceP);
-               printk(KERN_DEBUG "sabi_iface = %p\n", sabi_iface);
-
-               test_backlight();
-               test_wireless();
-
-               retval = sabi_get_command(sabi_config->commands.get_brightness,
-                                         &sretval);
-               printk(KERN_DEBUG "brightness = 0x%02x\n", sretval.retval[0]);
-       }
-
-       /* Turn on "Linux" mode in the BIOS */
-       if (sabi_config->commands.set_linux != 0xff) {
-               retval = sabi_set_command(sabi_config->commands.set_linux,
-                                         0x81);
-               if (retval) {
-                       pr_warn("Linux mode was not set!\n");
-                       goto error_no_platform;
-               }
-       }
-
-       /* knock up a platform device to hang stuff off of */
-       sdev = platform_device_register_simple("samsung", -1, NULL, 0);
-       if (IS_ERR(sdev))
-               goto error_no_platform;
-
-       /* create a backlight device to talk to this one */
-       memset(&props, 0, sizeof(struct backlight_properties));
-       props.type = BACKLIGHT_PLATFORM;
-       props.max_brightness = sabi_config->max_brightness;
-       backlight_device = backlight_device_register("samsung", &sdev->dev,
-                                                    NULL, &backlight_ops,
-                                                    &props);
-       if (IS_ERR(backlight_device))
-               goto error_no_backlight;
-
-       backlight_device->props.brightness = read_brightness();
-       backlight_device->props.power = FB_BLANK_UNBLANK;
-       backlight_update_status(backlight_device);
-
-       retval = init_wireless(sdev);
-       if (retval)
-               goto error_no_rfk;
-
-       retval = device_create_file(&sdev->dev, &dev_attr_performance_level);
-       if (retval)
-               goto error_file_create;
-
-exit:
-       return 0;
-
-error_file_create:
-       destroy_wireless();
-
-error_no_rfk:
-       backlight_device_unregister(backlight_device);
-
-error_no_backlight:
-       platform_device_unregister(sdev);
-
-error_no_platform:
-       iounmap(sabi_iface);
-
-error_no_signature:
-       iounmap(f0000_segment);
-       return -EINVAL;
-}
-
-static void __exit samsung_exit(void)
-{
-       /* Turn off "Linux" mode in the BIOS */
-       if (sabi_config->commands.set_linux != 0xff)
-               sabi_set_command(sabi_config->commands.set_linux, 0x80);
-
-       device_remove_file(&sdev->dev, &dev_attr_performance_level);
-       backlight_device_unregister(backlight_device);
-       destroy_wireless();
-       iounmap(sabi_iface);
-       iounmap(f0000_segment);
-       platform_device_unregister(sdev);
-}
-
-module_init(samsung_init);
-module_exit(samsung_exit);
-
-MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@suse.de>");
-MODULE_DESCRIPTION("Samsung Backlight driver");
-MODULE_LICENSE("GPL");
index 42d6c93..33167b4 100644 (file)
@@ -912,8 +912,7 @@ int bind_evtchn_to_irqhandler(unsigned int evtchn,
                              unsigned long irqflags,
                              const char *devname, void *dev_id)
 {
-       unsigned int irq;
-       int retval;
+       int irq, retval;
 
        irq = bind_evtchn_to_irq(evtchn);
        if (irq < 0)
@@ -955,8 +954,7 @@ int bind_virq_to_irqhandler(unsigned int virq, unsigned int cpu,
                            irq_handler_t handler,
                            unsigned long irqflags, const char *devname, void *dev_id)
 {
-       unsigned int irq;
-       int retval;
+       int irq, retval;
 
        irq = bind_virq_to_irq(virq, cpu);
        if (irq < 0)
index 7dba2ed..d99bcf5 100644 (file)
@@ -1030,18 +1030,6 @@ const struct seq_operations mounts_op = {
        .show   = show_vfsmnt
 };
 
-static int uuid_is_nil(u8 *uuid)
-{
-       int i;
-       u8  *cp = (u8 *)uuid;
-
-       for (i = 0; i < 16; i++) {
-               if (*cp++)
-                       return 0;
-       }
-       return 1;
-}
-
 static int show_mountinfo(struct seq_file *m, void *v)
 {
        struct proc_mounts *p = m->private;
@@ -1085,10 +1073,6 @@ static int show_mountinfo(struct seq_file *m, void *v)
        if (IS_MNT_UNBINDABLE(mnt))
                seq_puts(m, " unbindable");
 
-       if (!uuid_is_nil(mnt->mnt_sb->s_uuid))
-               /* print the uuid */
-               seq_printf(m, " uuid:%pU", mnt->mnt_sb->s_uuid);
-
        /* Filesystem specific data */
        seq_puts(m, " - ");
        show_type(m, sb);
index af0c627..e4cbc11 100644 (file)
@@ -542,11 +542,15 @@ nfs_scan_commit(struct inode *inode, struct list_head *dst, pgoff_t idx_start, u
        if (!nfs_need_commit(nfsi))
                return 0;
 
+       spin_lock(&inode->i_lock);
        ret = nfs_scan_list(nfsi, dst, idx_start, npages, NFS_PAGE_TAG_COMMIT);
        if (ret > 0)
                nfsi->ncommit -= ret;
+       spin_unlock(&inode->i_lock);
+
        if (nfs_need_commit(NFS_I(inode)))
                __mark_inode_dirty(inode, I_DIRTY_DATASYNC);
+
        return ret;
 }
 #else
@@ -1483,9 +1487,7 @@ int nfs_commit_inode(struct inode *inode, int how)
        res = nfs_commit_set_lock(NFS_I(inode), may_wait);
        if (res <= 0)
                goto out_mark_dirty;
-       spin_lock(&inode->i_lock);
        res = nfs_scan_commit(inode, &head, 0, 0);
-       spin_unlock(&inode->i_lock);
        if (res) {
                int error;
 
index ad1b19a..aef2330 100644 (file)
@@ -86,16 +86,25 @@ extern int mfd_clone_cell(const char *cell, const char **clones,
  */
 static inline const struct mfd_cell *mfd_get_cell(struct platform_device *pdev)
 {
-       return pdev->dev.platform_data;
+       return pdev->mfd_cell;
 }
 
 /*
  * Given a platform device that's been created by mfd_add_devices(), fetch
  * the .mfd_data entry from the mfd_cell that created it.
+ * Otherwise just return the platform_data pointer.
+ * This maintains compatibility with platform drivers whose devices aren't
+ * created by the mfd layer, and expect platform_data to contain what would've
+ * otherwise been in mfd_data.
  */
 static inline void *mfd_get_data(struct platform_device *pdev)
 {
-       return mfd_get_cell(pdev)->mfd_data;
+       const struct mfd_cell *cell = mfd_get_cell(pdev);
+
+       if (cell)
+               return cell->mfd_data;
+       else
+               return pdev->dev.platform_data;
 }
 
 extern int mfd_add_devices(struct device *parent, int id,
index d96db98..744942c 100644 (file)
@@ -14,6 +14,8 @@
 #include <linux/device.h>
 #include <linux/mod_devicetable.h>
 
+struct mfd_cell;
+
 struct platform_device {
        const char      * name;
        int             id;
@@ -23,6 +25,9 @@ struct platform_device {
 
        const struct platform_device_id *id_entry;
 
+       /* MFD cell pointer */
+       struct mfd_cell *mfd_cell;
+
        /* arch specific additions */
        struct pdev_archdata    archdata;
 };
index 9da8cab..b623a24 100644 (file)
@@ -1410,6 +1410,13 @@ no_page_table:
        return page;
 }
 
+static inline int stack_guard_page(struct vm_area_struct *vma, unsigned long addr)
+{
+       return (vma->vm_flags & VM_GROWSDOWN) &&
+               (vma->vm_start == addr) &&
+               !vma_stack_continue(vma->vm_prev, addr);
+}
+
 /**
  * __get_user_pages() - pin user pages in memory
  * @tsk:       task_struct of target task
@@ -1488,7 +1495,6 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
                vma = find_extend_vma(mm, start);
                if (!vma && in_gate_area(mm, start)) {
                        unsigned long pg = start & PAGE_MASK;
-                       struct vm_area_struct *gate_vma = get_gate_vma(mm);
                        pgd_t *pgd;
                        pud_t *pud;
                        pmd_t *pmd;
@@ -1513,10 +1519,11 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
                                pte_unmap(pte);
                                return i ? : -EFAULT;
                        }
+                       vma = get_gate_vma(mm);
                        if (pages) {
                                struct page *page;
 
-                               page = vm_normal_page(gate_vma, start, *pte);
+                               page = vm_normal_page(vma, start, *pte);
                                if (!page) {
                                        if (!(gup_flags & FOLL_DUMP) &&
                                             is_zero_pfn(pte_pfn(*pte)))
@@ -1530,12 +1537,7 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
                                get_page(page);
                        }
                        pte_unmap(pte);
-                       if (vmas)
-                               vmas[i] = gate_vma;
-                       i++;
-                       start += PAGE_SIZE;
-                       nr_pages--;
-                       continue;
+                       goto next_page;
                }
 
                if (!vma ||
@@ -1549,6 +1551,13 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
                        continue;
                }
 
+               /*
+                * If we don't actually want the page itself,
+                * and it's the stack guard page, just skip it.
+                */
+               if (!pages && stack_guard_page(vma, start))
+                       goto next_page;
+
                do {
                        struct page *page;
                        unsigned int foll_flags = gup_flags;
@@ -1631,6 +1640,7 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
                                flush_anon_page(vma, page, start);
                                flush_dcache_page(page);
                        }
+next_page:
                        if (vmas)
                                vmas[i] = vma;
                        i++;
index 2689a08..6b55e3e 100644 (file)
@@ -135,13 +135,6 @@ void munlock_vma_page(struct page *page)
        }
 }
 
-static inline int stack_guard_page(struct vm_area_struct *vma, unsigned long addr)
-{
-       return (vma->vm_flags & VM_GROWSDOWN) &&
-               (vma->vm_start == addr) &&
-               !vma_stack_continue(vma->vm_prev, addr);
-}
-
 /**
  * __mlock_vma_pages_range() -  mlock a range of pages in the vma.
  * @vma:   target vma
@@ -188,12 +181,6 @@ static long __mlock_vma_pages_range(struct vm_area_struct *vma,
        if (vma->vm_flags & VM_LOCKED)
                gup_flags |= FOLL_MLOCK;
 
-       /* We don't try to access the guard page of a stack vma */
-       if (stack_guard_page(vma, start)) {
-               addr += PAGE_SIZE;
-               nr_pages--;
-       }
-
        return __get_user_pages(current, mm, addr, nr_pages, gup_flags,
                                NULL, NULL, nonblocking);
 }