Merge branches 'acpi-scan' and 'acpi-video'

* acpi-scan:
  ACPI / documentation: Remove reference to acpi_platform_device_ids from enumeration.txt

* acpi-video:
  ACPI / video: Add use_native_backlight quirk for HP ProBook 4540s
  Revert "ACPI / video: change acpi-video brightness_switch_enabled default to 0"

17 files changed, 111 insertions, 53 deletions

diff --git a/Documentation/Changes b/Documentation/Changes
index 2254db0f00a5..227bec88021e 100644
--- a/Documentation/Changes
+++ b/Documentation/Changes
@@ -280,12 +280,9 @@ that is possible.
 mcelog
 ------
 
-In Linux 2.6.31+ the i386 kernel needs to run the mcelog utility
-as a regular cronjob similar to the x86-64 kernel to process and log
-machine check events when CONFIG_X86_NEW_MCE is enabled. Machine check
-events are errors reported by the CPU. Processing them is strongly encouraged.
-All x86-64 kernels since 2.6.4 require the mcelog utility to
-process machine checks.
+On x86 kernels the mcelog utility is needed to process and log machine check
+events when CONFIG_X86_MCE is enabled. Machine check events are errors reported
+by the CPU. Processing them is strongly encouraged.
 
 Getting updated software
 ========================
diff --git a/Documentation/DocBook/gadget.tmpl b/Documentation/DocBook/gadget.tmpl
index 4017f147ba2f..2c425d70f7e2 100644
--- a/Documentation/DocBook/gadget.tmpl
+++ b/Documentation/DocBook/gadget.tmpl
@@ -708,7 +708,7 @@ hardware level details could be very different.
 
 <para>Systems need specialized hardware support to implement OTG,
 notably including a special <emphasis>Mini-AB</emphasis> jack
-and associated transciever to support <emphasis>Dual-Role</emphasis>
+and associated transceiver to support <emphasis>Dual-Role</emphasis>
 operation:
 they can act either as a host, using the standard
 Linux-USB host side driver stack,
diff --git a/Documentation/DocBook/genericirq.tmpl b/Documentation/DocBook/genericirq.tmpl
index 46347f603353..59fb5c077541 100644
--- a/Documentation/DocBook/genericirq.tmpl
+++ b/Documentation/DocBook/genericirq.tmpl
@@ -182,7 +182,7 @@
         <para>
         Each interrupt is described by an interrupt descriptor structure
         irq_desc. The interrupt is referenced by an 'unsigned int' numeric
-        value which selects the corresponding interrupt decription structure
+        value which selects the corresponding interrupt description structure
         in the descriptor structures array.
         The descriptor structure contains status information and pointers
         to the interrupt flow method and the interrupt chip structure
@@ -470,7 +470,7 @@ if (desc->irq_data.chip->irq_eoi)
      <para>
        To avoid copies of identical implementations of IRQ chips the
        core provides a configurable generic interrupt chip
-       implementation. Developers should check carefuly whether the
+       implementation. Developers should check carefully whether the
        generic chip fits their needs before implementing the same
        functionality slightly differently themselves.
      </para>
diff --git a/Documentation/DocBook/kernel-locking.tmpl b/Documentation/DocBook/kernel-locking.tmpl
index 19f2a5a5a5b4..e584ee12a1e7 100644
--- a/Documentation/DocBook/kernel-locking.tmpl
+++ b/Documentation/DocBook/kernel-locking.tmpl
@@ -1760,7 +1760,7 @@ as it would be on UP.
 </para>
 
 <para>
-There is a furthur optimization possible here: remember our original
+There is a further optimization possible here: remember our original
 cache code, where there were no reference counts and the caller simply
 held the lock whenever using the object?  This is still possible: if
 you hold the lock, no one can delete the object, so you don't need to
diff --git a/Documentation/DocBook/libata.tmpl b/Documentation/DocBook/libata.tmpl
index deb71baed328..d7fcdc5a4379 100644
--- a/Documentation/DocBook/libata.tmpl
+++ b/Documentation/DocBook/libata.tmpl
@@ -677,7 +677,7 @@ and other resources, etc.
 
         <listitem>
         <para>
-        ATA_QCFLAG_ACTIVE is clared from qc->flags.
+        ATA_QCFLAG_ACTIVE is cleared from qc->flags.
         </para>
         </listitem>
 
@@ -708,7 +708,7 @@ and other resources, etc.
 
            <listitem>
            <para>
-           qc->waiting is claread &amp; completed (in that order).
+           qc->waiting is cleared &amp; completed (in that order).
            </para>
            </listitem>
 
@@ -1163,7 +1163,7 @@ and other resources, etc.
 
         <para>
         Once sense data is acquired, this type of errors can be
-        handled similary to other SCSI errors.  Note that sense data
+        handled similarly to other SCSI errors.  Note that sense data
         may indicate ATA bus error (e.g. Sense Key 04h HARDWARE ERROR
         &amp;&amp; ASC/ASCQ 47h/00h SCSI PARITY ERROR).  In such
         cases, the error should be considered as an ATA bus error and
diff --git a/Documentation/DocBook/media_api.tmpl b/Documentation/DocBook/media_api.tmpl
index 4decb46bfa76..03f9a1f8d413 100644
--- a/Documentation/DocBook/media_api.tmpl
+++ b/Documentation/DocBook/media_api.tmpl
@@ -68,7 +68,7 @@
                 several digital tv standards. While it is called as DVB API,
                 in fact it covers several different video standards including
                 DVB-T, DVB-S, DVB-C and ATSC. The API is currently being updated
-                to documment support also for DVB-S2, ISDB-T and ISDB-S.</para>
+                to document support also for DVB-S2, ISDB-T and ISDB-S.</para>
         <para>The third part covers the Remote Controller API.</para>
         <para>The fourth part covers the Media Controller API.</para>
         <para>For additional information and for the latest development code,
diff --git a/Documentation/DocBook/mtdnand.tmpl b/Documentation/DocBook/mtdnand.tmpl
index cd11926e07c7..7da8f0402af5 100644
--- a/Documentation/DocBook/mtdnand.tmpl
+++ b/Documentation/DocBook/mtdnand.tmpl
@@ -91,7 +91,7 @@
                 <listitem><para>
                 [MTD Interface]</para><para>
                 These functions provide the interface to the MTD kernel API. 
-                They are not replacable and provide functionality
+                They are not replaceable and provide functionality
                 which is complete hardware independent.
                 </para></listitem>
                 <listitem><para>
@@ -100,14 +100,14 @@
                 </para></listitem>
                 <listitem><para>
                 [GENERIC]</para><para>
-                Generic functions are not replacable and provide functionality
+                Generic functions are not replaceable and provide functionality
                 which is complete hardware independent.
                 </para></listitem>
                 <listitem><para>
                 [DEFAULT]</para><para>
                 Default functions provide hardware related functionality which is suitable
                 for most of the implementations. These functions can be replaced by the
-                board driver if neccecary. Those functions are called via pointers in the
+                board driver if necessary. Those functions are called via pointers in the
                 NAND chip description structure. The board driver can set the functions which
                 should be replaced by board dependent functions before calling nand_scan().
                 If the function pointer is NULL on entry to nand_scan() then the pointer
@@ -264,7 +264,7 @@ static void board_hwcontrol(struct mtd_info *mtd, int cmd)
                         is set up nand_scan() is called. This function tries to
                         detect and identify then chip. If a chip is found all the
                         internal data fields are initialized accordingly.
-                        The structure(s) have to be zeroed out first and then filled with the neccecary 
+                        The structure(s) have to be zeroed out first and then filled with the necessary
                         information about the device.
                 </para>
                 <programlisting>
@@ -327,7 +327,7 @@ module_init(board_init);
         <sect1 id="Exit_function">
                 <title>Exit function</title>
                 <para>
-                        The exit function is only neccecary if the driver is
+                        The exit function is only necessary if the driver is
                         compiled as a module. It releases all resources which
                         are held by the chip driver and unregisters the partitions
                         in the MTD layer.
@@ -494,7 +494,7 @@ static void board_select_chip (struct mtd_info *mtd, int chip)
                                 in this case. See rts_from4.c and diskonchip.c for 
                                 implementation reference. In those cases we must also
                                 use bad block tables on FLASH, because the ECC layout is
-                                interferring with the bad block marker positions.
+                                interfering with the bad block marker positions.
                                 See bad block table support for details.
                         </para>
                 </sect2>
@@ -542,7 +542,7 @@ static void board_select_chip (struct mtd_info *mtd, int chip)
                 <para>  
                         nand_scan() calls the function nand_default_bbt(). 
                         nand_default_bbt() selects appropriate default
-                        bad block table desriptors depending on the chip information
+                        bad block table descriptors depending on the chip information
                         which was retrieved by nand_scan().
                 </para>
                 <para>
@@ -554,7 +554,7 @@ static void board_select_chip (struct mtd_info *mtd, int chip)
                 <sect2 id="Flash_based_tables">
                         <title>Flash based tables</title>
                         <para>
-                                It may be desired or neccecary to keep a bad block table in FLASH. 
+                                It may be desired or necessary to keep a bad block table in FLASH.
                                 For AG-AND chips this is mandatory, as they have no factory marked
                                 bad blocks. They have factory marked good blocks. The marker pattern
                                 is erased when the block is erased to be reused. So in case of
@@ -565,10 +565,10 @@ static void board_select_chip (struct mtd_info *mtd, int chip)
                                 of the blocks.
                         </para>
                         <para>
-                                The blocks in which the tables are stored are procteted against
+                                The blocks in which the tables are stored are protected against
                                 accidental access by marking them bad in the memory bad block
                                 table. The bad block table management functions are allowed
-                                to circumvernt this protection.
+                                to circumvent this protection.
                         </para>
                         <para>
                                 The simplest way to activate the FLASH based bad block table support 
@@ -592,7 +592,7 @@ static void board_select_chip (struct mtd_info *mtd, int chip)
                                 User defined tables are created by filling out a 
                                 nand_bbt_descr structure and storing the pointer in the
                                 nand_chip structure member bbt_td before calling nand_scan(). 
-                                If a mirror table is neccecary a second structure must be
+                                If a mirror table is necessary a second structure must be
                                 created and a pointer to this structure must be stored
                                 in bbt_md inside the nand_chip structure. If the bbt_md 
                                 member is set to NULL then only the main table is used
@@ -666,7 +666,7 @@ static void board_select_chip (struct mtd_info *mtd, int chip)
                                 <para>
                                 For automatic placement some blocks must be reserved for
                                 bad block table storage. The number of reserved blocks is defined 
-                                in the maxblocks member of the babd block table description structure.
+                                in the maxblocks member of the bad block table description structure.
                                 Reserving 4 blocks for mirrored tables should be a reasonable number. 
                                 This also limits the number of blocks which are scanned for the bad
                                 block table ident pattern.
@@ -1068,11 +1068,11 @@ in this page</entry>
   <chapter id="filesystems">
         <title>Filesystem support</title>
         <para>
-                The NAND driver provides all neccecary functions for a
+                The NAND driver provides all necessary functions for a
                 filesystem via the MTD interface.
         </para>
         <para>
-                Filesystems must be aware of the NAND pecularities and
+                Filesystems must be aware of the NAND peculiarities and
                 restrictions. One major restrictions of NAND Flash is, that you cannot 
                 write as often as you want to a page. The consecutive writes to a page, 
                 before erasing it again, are restricted to 1-3 writes, depending on the 
@@ -1222,7 +1222,7 @@ in this page</entry>
 #define NAND_BBT_VERSION        0x00000100
 /* Create a bbt if none axists */
 #define NAND_BBT_CREATE         0x00000200
-/* Write bbt if neccecary */
+/* Write bbt if necessary */
 #define NAND_BBT_WRITE          0x00001000
 /* Read and write back block contents when writing bbt */
 #define NAND_BBT_SAVECONTENT    0x00002000
diff --git a/Documentation/DocBook/regulator.tmpl b/Documentation/DocBook/regulator.tmpl
index 346e552fa2cc..3b08a085d2c7 100644
--- a/Documentation/DocBook/regulator.tmpl
+++ b/Documentation/DocBook/regulator.tmpl
@@ -155,7 +155,7 @@
        release regulators.  Functions are
        provided to <link linkend='API-regulator-enable'>enable</link>
        and <link linkend='API-regulator-disable'>disable</link> the
-       reguator and to get and set the runtime parameters of the
+       regulator and to get and set the runtime parameters of the
        regulator.
      </para>
      <para>
diff --git a/Documentation/DocBook/uio-howto.tmpl b/Documentation/DocBook/uio-howto.tmpl
index 95618159e29b..bbe9c1fd5cef 100644
--- a/Documentation/DocBook/uio-howto.tmpl
+++ b/Documentation/DocBook/uio-howto.tmpl
@@ -766,10 +766,10 @@ framework to set up sysfs files for this region. Simply leave it alone.
         <para>
         The dynamic memory regions will be allocated when the UIO device file,
         <varname>/dev/uioX</varname> is opened.
-        Simiar to static memory resources, the memory region information for
+        Similar to static memory resources, the memory region information for
         dynamic regions is then visible via sysfs at
         <varname>/sys/class/uio/uioX/maps/mapY/*</varname>.
-        The dynmaic memory regions will be freed when the UIO device file is
+        The dynamic memory regions will be freed when the UIO device file is
         closed. When no processes are holding the device file open, the address
         returned to userspace is ~0.
         </para>
diff --git a/Documentation/DocBook/usb.tmpl b/Documentation/DocBook/usb.tmpl
index 8d57c1888dca..85fc0e28576f 100644
--- a/Documentation/DocBook/usb.tmpl
+++ b/Documentation/DocBook/usb.tmpl
@@ -153,7 +153,7 @@
 
         <listitem><para>The Linux USB API supports synchronous calls for
         control and bulk messages.
-        It also supports asynchnous calls for all kinds of data transfer,
+        It also supports asynchronous calls for all kinds of data transfer,
         using request structures called "URBs" (USB Request Blocks).
         </para></listitem>
 
diff --git a/Documentation/DocBook/writing-an-alsa-driver.tmpl b/Documentation/DocBook/writing-an-alsa-driver.tmpl
index d0056a4e9c53..6f639d9530b5 100644
--- a/Documentation/DocBook/writing-an-alsa-driver.tmpl
+++ b/Documentation/DocBook/writing-an-alsa-driver.tmpl
@@ -5696,7 +5696,7 @@ struct _snd_pcm_runtime {
         suspending the PCM operations via
         <function>snd_pcm_suspend_all()</function> or
         <function>snd_pcm_suspend()</function>.  It means that the PCM
-        streams are already stoppped when the register snapshot is
+        streams are already stopped when the register snapshot is
         taken.  But, remember that you don't have to restart the PCM
         stream in the resume callback. It'll be restarted via 
         trigger call with <constant>SNDRV_PCM_TRIGGER_RESUME</constant>
diff --git a/Documentation/cpu-freq/intel-pstate.txt b/Documentation/cpu-freq/intel-pstate.txt
index e742d21dbd96..a69ffe1d54d5 100644
--- a/Documentation/cpu-freq/intel-pstate.txt
+++ b/Documentation/cpu-freq/intel-pstate.txt
@@ -15,10 +15,13 @@ New sysfs files for controlling P state selection have been added to
 /sys/devices/system/cpu/intel_pstate/
 
       max_perf_pct: limits the maximum P state that will be requested by
-      the driver stated as a percentage of the available performance.
+      the driver stated as a percentage of the available performance. The
+      available (P states) performance may be reduced by the no_turbo
+      setting described below.
 
       min_perf_pct: limits the minimum P state that will be  requested by
-      the driver stated as a percentage of the available performance.
+      the driver stated as a percentage of the max (non-turbo)
+      performance level.
 
       no_turbo: limits the driver to selecting P states below the turbo
       frequency range.
diff --git a/Documentation/devicetree/bindings/arm/exynos/power_domain.txt b/Documentation/devicetree/bindings/arm/exynos/power_domain.txt
index 5216b419016a..8b4f7b7fe88b 100644
--- a/Documentation/devicetree/bindings/arm/exynos/power_domain.txt
+++ b/Documentation/devicetree/bindings/arm/exynos/power_domain.txt
@@ -9,6 +9,18 @@ Required Properties:
 - reg: physical base address of the controller and length of memory mapped
     region.
 
+Optional Properties:
+- clocks: List of clock handles. The parent clocks of the input clocks to the
+        devices in this power domain are set to oscclk before power gating
+        and restored back after powering on a domain. This is required for
+        all domains which are powered on and off and not required for unused
+        domains.
+- clock-names: The following clocks can be specified:
+        - oscclk: Oscillator clock.
+        - pclkN, clkN: Pairs of parent of input clock and input clock to the
+                devices in this power domain. Maximum of 4 pairs (N = 0 to 3)
+                are supported currently.
+
 Node of a device using power domains must have a samsung,power-domain property
 defined with a phandle to respective power domain.
 
@@ -19,6 +31,14 @@ Example:
                 reg = <0x10023C00 0x10>;
         };
 
+        mfc_pd: power-domain@10044060 {
+                compatible = "samsung,exynos4210-pd";
+                reg = <0x10044060 0x20>;
+                clocks = <&clock CLK_FIN_PLL>, <&clock CLK_MOUT_SW_ACLK333>,
+                        <&clock CLK_MOUT_USER_ACLK333>;
+                clock-names = "oscclk", "pclk0", "clk0";
+        };
+
 Example of the node using power domain:
 
         node {
diff --git a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
index 64fd7dec1bbc..b3556609a06f 100644
--- a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
+++ b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
@@ -4,6 +4,13 @@ Required properties:
 
   - compatible: Must contain one of the following:
 
+    - "renesas,scifa-sh73a0" for SH73A0 (SH-Mobile AG5) SCIFA compatible UART.
+    - "renesas,scifb-sh73a0" for SH73A0 (SH-Mobile AG5) SCIFB compatible UART.
+    - "renesas,scifa-r8a73a4" for R8A73A4 (R-Mobile APE6) SCIFA compatible UART.
+    - "renesas,scifb-r8a73a4" for R8A73A4 (R-Mobile APE6) SCIFB compatible UART.
+    - "renesas,scifa-r8a7740" for R8A7740 (R-Mobile A1) SCIFA compatible UART.
+    - "renesas,scifb-r8a7740" for R8A7740 (R-Mobile A1) SCIFB compatible UART.
+    - "renesas,scif-r8a7778" for R8A7778 (R-Car M1) SCIF compatible UART.
     - "renesas,scif-r8a7779" for R8A7779 (R-Car H1) SCIF compatible UART.
     - "renesas,scif-r8a7790" for R8A7790 (R-Car H2) SCIF compatible UART.
     - "renesas,scifa-r8a7790" for R8A7790 (R-Car H2) SCIFA compatible UART.
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index c1b9aa8c5a52..e332e718cad6 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -3526,7 +3526,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                         the allocated input device; If set to 0, video driver
                         will only send out the event without touching backlight
                         brightness level.
-                        default: 0
+                        default: 1
 
         virtio_mmio.device=
                         [VMMIO] Memory mapped virtio (platform) device.
diff --git a/Documentation/laptops/00-INDEX b/Documentation/laptops/00-INDEX
index d13b9a9a9e00..d399ae1fc724 100644
--- a/Documentation/laptops/00-INDEX
+++ b/Documentation/laptops/00-INDEX
@@ -8,8 +8,8 @@ disk-shock-protection.txt
         - information on hard disk shock protection.
 dslm.c
         - Simple Disk Sleep Monitor program
-hpfall.c
-        - (HP) laptop accelerometer program for disk protection.
+freefall.c
+        - (HP/DELL) laptop accelerometer program for disk protection.
 laptop-mode.txt
         - how to conserve battery power using laptop-mode.
 sony-laptop.txt
diff --git a/Documentation/laptops/hpfall.c b/Documentation/laptops/freefall.c
index b85dbbac0499..aab2ff09e868 100644
--- a/Documentation/laptops/hpfall.c
+++ b/Documentation/laptops/freefall.c
@@ -1,7 +1,9 @@
-/* Disk protection for HP machines.
+/* Disk protection for HP/DELL machines.
  *
  * Copyright 2008 Eric Piel
  * Copyright 2009 Pavel Machek <pavel@ucw.cz>
+ * Copyright 2012 Sonal Santan
+ * Copyright 2014 Pali Rohár <pali.rohar@gmail.com>
  *
  * GPLv2.
  */
@@ -18,24 +20,31 @@
 #include <signal.h>
 #include <sys/mman.h>
 #include <sched.h>
+#include <syslog.h>
 
-char unload_heads_path[64];
+static int noled;
+static char unload_heads_path[64];
+static char device_path[32];
+static const char app_name[] = "FREE FALL";
 
-int set_unload_heads_path(char *device)
+static int set_unload_heads_path(char *device)
 {
         char devname[64];
 
         if (strlen(device) <= 5 || strncmp(device, "/dev/", 5) != 0)
                 return -EINVAL;
-        strncpy(devname, device + 5, sizeof(devname));
+        strncpy(devname, device + 5, sizeof(devname) - 1);
+        strncpy(device_path, device, sizeof(device_path) - 1);
 
         snprintf(unload_heads_path, sizeof(unload_heads_path) - 1,
                                 "/sys/block/%s/device/unload_heads", devname);
         return 0;
 }
-int valid_disk(void)
+
+static int valid_disk(void)
 {
         int fd = open(unload_heads_path, O_RDONLY);
+
         if (fd < 0) {
                 perror(unload_heads_path);
                 return 0;
@@ -45,43 +54,54 @@ int valid_disk(void)
         return 1;
 }
 
-void write_int(char *path, int i)
+static void write_int(char *path, int i)
 {
         char buf[1024];
         int fd = open(path, O_RDWR);
+
         if (fd < 0) {
                 perror("open");
                 exit(1);
         }
+
         sprintf(buf, "%d", i);
+
         if (write(fd, buf, strlen(buf)) != strlen(buf)) {
                 perror("write");
                 exit(1);
         }
+
         close(fd);
 }
 
-void set_led(int on)
+static void set_led(int on)
 {
+        if (noled)
+                return;
         write_int("/sys/class/leds/hp::hddprotect/brightness", on);
 }
 
-void protect(int seconds)
+static void protect(int seconds)
 {
+        const char *str = (seconds == 0) ? "Unparked" : "Parked";
+
         write_int(unload_heads_path, seconds*1000);
+        syslog(LOG_INFO, "%s %s disk head\n", str, device_path);
 }
 
-int on_ac(void)
+static int on_ac(void)
 {
-//      /sys/class/power_supply/AC0/online
+        /* /sys/class/power_supply/AC0/online */
+        return 1;
 }
 
-int lid_open(void)
+static int lid_open(void)
 {
-//      /proc/acpi/button/lid/LID/state
+        /* /proc/acpi/button/lid/LID/state */
+        return 1;
 }
 
-void ignore_me(void)
+static void ignore_me(int signum)
 {
         protect(0);
         set_led(0);
@@ -90,6 +110,7 @@ void ignore_me(void)
 int main(int argc, char **argv)
 {
         int fd, ret;
+        struct stat st;
         struct sched_param param;
 
         if (argc == 1)
@@ -111,7 +132,16 @@ int main(int argc, char **argv)
                 return EXIT_FAILURE;
         }
 
-        daemon(0, 0);
+        if (stat("/sys/class/leds/hp::hddprotect/brightness", &st))
+                noled = 1;
+
+        if (daemon(0, 0) != 0) {
+                perror("daemon");
+                return EXIT_FAILURE;
+        }
+
+        openlog(app_name, LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL1);
+
         param.sched_priority = sched_get_priority_max(SCHED_FIFO);
         sched_setscheduler(0, SCHED_FIFO, &param);
         mlockall(MCL_CURRENT|MCL_FUTURE);
@@ -141,6 +171,7 @@ int main(int argc, char **argv)
                         alarm(20);
         }
 
+        closelog();
         close(fd);
         return EXIT_SUCCESS;
 }