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376,031 commits

Author SHA1 Message Date
Eduardo Valentin
f155333423 staging: ti-soc-thermal: defer probe if cpufreq is not ready
When builtin compiled, there is a chance for this driver
be probed before cpufreq driver is up and running. In this
case, the cpucooling device can be wrong initialized.

Thus, this patch makes sure this driver is probed only
when cpufreq driver is ready. Whenever there is no
cpufreq driver registered, the probe will return -EPROBE_DEFER.

Tested-by: J Keerthy <j-keerthy@ti.com>
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:35:08 -07:00
Eduardo Valentin
537eb9364c staging: ti-soc-thermal: remove extrapolation rules from TODO
Extrapolation rules have been revisited.

Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:35:08 -07:00
Eduardo Valentin
21bf220211 staging: ti-soc-thermal: update OMAP5 extrapolation rules
Update the constants to the correct hotspot extrapolation
equation constants. OMAP4 constants are revisited and correct.

Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:35:08 -07:00
Eduardo Valentin
b763fdaeae staging: ti-soc-thermal: introduce OMAP4430 extrapolation constants
This patch defines and utilizes the extrapolation constants for OMAP4430.

Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:35:08 -07:00
Eduardo Valentin
0359090ea7 staging: ti-soc-thermal: Remove TC1/TC2 TODO (already done)
TC1/TC2 are not needed anymore, API has been upgraded.
This is a TODO left-over.

Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:35:08 -07:00
Eduardo Valentin
67b4c47422 staging: ti-soc-thermal: fix min/max TODO (already done)
Min/Max cooling state are defined by registration helper
function, if no specific limits are passed. No need to change
this code.

Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:35:08 -07:00
Eduardo Valentin
2c014c841e staging: ti-soc-thermal: update TODO list
This patch removes out of the TODO list those already completed.

Here is the status and why they are removed:
 on ti-bandgap.c:
-- Add support to hwmon: REMOVED, no need to have hwmon interfaces as
   the control is done via thermal framework.
-- Test every exposed API to userland: DONE, via thermal fw APIs
   By now, no specific API is exposed by this driver
-- Revisit data structures and simplify them: DONE, all
   unused fields are flagged for future removal.
-- Once SCM-core api settles, update this driver accordingly: DONE,
   the BG driver can exist without SCM driver by ioremapping its own
   registers and doing its own locking.

 on ti-thermal-common.c/ti-thermal.h:
-- Revisit trips and its definitions: DONE, for now there is no
   need to change current definition. Alert based policy will be add
   in future.
-- Revisit trending: DONE, OMAP5 history buffer support has been
   implemented. Devices without history buffer will use thermal fw
   trending capability.

on omap5-thermal.c
-- Add support for GPU cooling: REMOVED: this will not be part
   of this driver. Must be done in a separated cooling device.

 generally:
-- make checkpatch.pl and sparse happy: DONE, sparse remaining
   warning is not an issue.
-- update documentation: DONE, kernel-doc for ti-bandgap is now
   available.

Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:35:08 -07:00
Valentin Ilie
dd7cc7e418 staging/fwserial: Replace seq_printf with seq_puts
Fix checkpatch warning about seq_printf.

Signed-off-by: Valentin Ilie <valentin.ilie@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:32:53 -07:00
Chen Gang
f1159d7cc0 Drivers: Staging: cxt1e1: strncpy issue, need set zero at the end.
need set '\0' at the end. or cause issue.

    it is called by c4_ioctl in drivers/staging/cxt1e1/linux.c
    all things need be initialized, before provide them to user mode.
    so we can not use strlcpy instead of strncpy.

  code style:
    all contents of the file use 4 spaces instead of '\t',
    so this patch has to follow, now.

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:32:53 -07:00
Arnd Bergmann
dc2d3db813 Clean-up for omap2+ timers from Jon Hunter <jon-hunter@ti.com>:
This series consists mainly of clean-ups for clockevents and
 clocksource timers on OMAP2+ devices. The most significant change
 in functionality comes from the 5th patch which is changing the
 selection of the clocksource timer for OMAP3 and AM335x devices
 when gptimers are used for clocksource.
 
 Note that this series depends on 7185684 (ARM: OMAP: use
 consistent error checking) in RMK's tree and 960cba6 (ARM:
 OMAP5: timer: Update the clocksource name as per clock data)
 in omap-for-v3.10/fixes-non-critical. So this branch is based
 on a merge of 7185684 and omap-for-v3.10/fixes-non-critical
 to avoid non-trivial merge conflicts.
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Merge tag 'omap-for-v3.10/timer-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/drivers

From Tony Lindgren <tony@atomide.com>:

Clean-up for omap2+ timers from Jon Hunter <jon-hunter@ti.com>:

This series consists mainly of clean-ups for clockevents and
clocksource timers on OMAP2+ devices. The most significant change
in functionality comes from the 5th patch which is changing the
selection of the clocksource timer for OMAP3 and AM335x devices
when gptimers are used for clocksource.

Note that this series depends on 7185684 (ARM: OMAP: use
consistent error checking) in RMK's tree and 960cba6 (ARM:
OMAP5: timer: Update the clocksource name as per clock data)
in omap-for-v3.10/fixes-non-critical. So this branch is based
on a merge of 7185684 and omap-for-v3.10/fixes-non-critical
to avoid non-trivial merge conflicts.

* tag 'omap-for-v3.10/timer-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP4+: Fix sparse warning in system timers
  ARM: OMAP2+: Store ID of system timers in timer structure
  ARM: OMAP3: Update clocksource timer selection
  ARM: OMAP2+: Simplify system timers definitions
  ARM: OMAP2+: Simplify system timer clock definitions
  ARM: OMAP2+: Remove hard-coded test on timer ID
  ARM: OMAP2+: Display correct system timer name
  ARM: OMAP2+: fix typo "CONFIG_BRIDGE_DVFS"
  ARM: OMAP1: remove "config MACH_OMAP_HTCWIZARD"
  ARM: OMAP: dpll: enable bypass clock only when attempting dpll bypass
  ARM: OMAP2+: powerdomain: avoid testing whether an unsigned char is less than 0
  ARM: OMAP2+: hwmod: Remove unused _HWMOD_WAKEUP_ENABLED flag
  ARM: OMAP2+: am335x: Change the wdt1 func clk src to per_32k clk
  ARM: OMAP2+: AM33xx: hwmod: Add missing sysc definition to wdt1 entry

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-04-08 19:30:48 +02:00
H Hartley Sweeten
e8e1560a02 staging: comedi: ni_at_a2150: remove 'thisboard' macro
The 'thisboard' macro relies on a local variable having a specific
name and yields a pointer derived from that local variable.

Replace the macro with local variables and use the comedi_board()
helper to get the pointer.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:29:59 -07:00
H Hartley Sweeten
a56ec2fe66 staging: comedi: dt282x: remove 'boardtype' macro
The 'boardtype' macro relies on a local variable having a specific
name and yields a struct derived from that local variable.

Replace the macro with local variables and use the comedi_board()
helper to get the struct as a pointer. Use pointer access when
using the variable.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:29:59 -07:00
H Hartley Sweeten
23e79f81ad staging: comedi: dt2801: remove 'boardtype' macro
The 'boardtype' macro relies on a local variable having a specific
name and yields a struct derived from that local variable.

Replace the macro with local variables and use the comedi_board()
helper to get the struct as a pointer. Use pointer access when
using the variable.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:29:59 -07:00
H Hartley Sweeten
3cb65d4d9d staging: comedi: das800: remove 'thisboard' macro
The 'thisboard' macro relies on a local variable having a specific
name and yields a pointer derived from that local variable.

Replace the macro with local variables and use the comedi_board()
helper to get the pointer.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:29:59 -07:00
H Hartley Sweeten
fef2aa646f staging: comedi: das1800: remove 'thisboard' macro
The 'thisboard' macro relies on a local variable having a specific
name and yields a pointer derived from that local variable.

Replace the macro with local variables and use the comedi_board()
helper to get the pointer.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:29:58 -07:00
H Hartley Sweeten
9876d566f2 staging: comedi: serial2002: remove #if 0'ed out code
This function is not used. Just remove it.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:27:45 -07:00
H Hartley Sweeten
7e32f5ada5 staging: comedi: serial2002: remove pr_err() noise in serial2002_read()
This pr_err() is just added noise, the user can't do anything about it.
Just remove it.

Since this is the only pr_level() message in the driver, also remove
the pr_fmt() macro.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:27:45 -07:00
H Hartley Sweeten
a058be68bd staging: comedi: serial2002: rename all the static functions
Many of the static functions in this driver have names that could
potentially clash with external symbols (tty_ioctl, tty_write, etc.).

Rename all the static functions so they have a 'serial2002_' prefix
to avoid any issues.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:27:44 -07:00
H Hartley Sweeten
e7ccc452b2 staging: comedi: serial2002: hookup the (*open) and (*close) last
For aesthetic reasons, hookup the comedi_device (*open) and (*close)
functions after everything else in the attach has succeeded.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:27:44 -07:00
H Hartley Sweeten
81c01c3fb8 staging: comedi: serial2002: return 0 after successful attach
A return value of >=0 indicates a successful attach to the comedi core.
Return 0 since that is more common in the kernel.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:27:44 -07:00
H Hartley Sweeten
8399965210 staging: comedi: serial2002: remove attach dev_dbg() noise
This is just added noise. Remove it.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:27:44 -07:00
H Hartley Sweeten
adbd1741a5 staging: comedi: serial2002: add some whitespace to the subdevice init
To improve the readability, add some whitespace to the subdevice
init.

Also, for aesthetic reasons and the help with greps, rename the
(*insn_{read,write}) functions.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:27:44 -07:00
H Hartley Sweeten
fd47579ba0 staging: comedi: serial2002: don't assume the number of subdevices to detach
Use the number of subdevices allocated (dev->n_subdevices) in the
(*detach) instead of assuming a given number.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:27:44 -07:00
H Hartley Sweeten
ee422bb687 staging: comedi: serial2002: cleanup serial2002_setup_subdevs()
Define and document the bit shifts of the serial.data read from
the device that is used to configure the subdevice channels.

Use the new defines to tidy up the configuration process.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:27:43 -07:00
H Hartley Sweeten
623a73926c staging: comedi: serial2002: split up serial_2002_open()
Split out the code that sets up the comedi subdevices that are
attached to the serial port.

There are actually two steps:

1) Read the configuration of the attached subdevices.
2) Use the configuration data to setup the comedi subdevices.

Step 1 is split out as serial2002_setup_subdevs().
Step 2 is split out as serial2002_setup_subdevice().

Cleanup the split out code to remove all the extra '{ }' and indents.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:27:43 -07:00
H Hartley Sweeten
761a38a4e7 staging: comedi: serial2002: cleanup serial_read()
Remove the unnecessary '{ }' around the code and the extra indents
in the switch().

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:27:43 -07:00
H Hartley Sweeten
071e0866d2 staging: comedi: serial2002: cleanup tty_setspeed()
Rename the two local variables used to set the serial port speed
and latency so thy are unique.

Remove the unnecessary '{ }' around the code and the extra indents.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:27:43 -07:00
H Hartley Sweeten
0a245982e6 staging: comedi: serial2002: factor (*poll) busy wait out of tty_read()
Factor the (*poll) busy wait code out of tty_read() so the indent
level can be reduced and tty_read() is a bit cleaner.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:27:43 -07:00
H Hartley Sweeten
32ef0e3e30 staging: comedi: serial2002: fix different address space sparse warnings
The struct file_operations (*read) and (*write) operations expect the
buffer to be a __user space pointer.

Currently the (*write) operations in this driver cause this warning:
warning: incorrect type in argument 2 (different address spaces)
  expected char const [noderef] <asn:1>*<noident>
  got unsigned char [usertype] *buf

And the (*read) operations cause this warning:
warning: incorrect type in argument 2 (different address spaces)
  expected char [noderef] <asn:1>*<noident>
  got unsigned char *<noident>

Use __force to cast the buffer to a __user pointer to suppress the
warnings.

Consolidate the (*read) calls into a helper function, __tty_readb().

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:27:43 -07:00
Masanari Iida
4445d254cd staging:csr: Fix typo in staging/csr driver
Correct spelling typo in comment within staging/csr

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:22:50 -07:00
Lars-Peter Clausen
bc73488cb7 staging: cptm1217: Use dev_pm_ops
Use dev_pm_ops instead of the deprecated legacy suspend/resume callbacks.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 10:20:16 -07:00
Arnd Bergmann
8355ae69af EHCI platform data related changes for v3.10 merge window.
These are needed for the USB PHY support, and are based on
 commit 1f0972f5 from Felipe Balbi's tree as agreed on the
 mailing lists.
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Merge tag 'omap-for-v3.10/usb-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/drivers

From Tony Lindgren <tony@atomide.com>:

EHCI platform data related changes for v3.10 merge window.
These are needed for the USB PHY support, and are based on
commit 1f0972f5 from Felipe Balbi's tree as agreed on the
mailing lists.

* tag 'omap-for-v3.10/usb-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (21 commits)
  ARM: dts: omap3-beagle: Add USB Host support
  ARM: dts: OMAP3: Add HS USB Host IP nodes
  ARM: dts: OMAP4: Add HS USB Host IP nodes
  ARM: OMAP: zoom: Adapt to ehci-omap changes
  ARM: OMAP3: overo: Adapt to ehci-omap changes
  ARM: OMAP3: omap3touchbook: Adapt to ehci-omap changes
  ARM: OMAP3: omap3stalker: Adapt to ehci-omap changes
  ARM: OMAP3: omap3pandora: Adapt to ehci-omap changes
  ARM: OMAP3: omap3evm: Adapt to ehci-omap changes
  ARM: OMAP3: igep0020: Adapt to ehci-omap changes
  ARM: OMAP: devkit8000: Adapt to ehci-omap changes
  ARM: OMAP3: cm-t3517: Adapt to ehci-omap changes
  ARM: OMAP3: cm-t35: Adapt to ehci-omap changes
  ARM: OMAP: AM3517evm: Adapt to ehci-omap changes
  ARM: OMAP: AM3517crane: Adapt to ehci-omap changes
  ARM: OMAP3: 3630SDP: Adapt to ehci-omap changes
  ARM: OMAP3: 3430SDP: Adapt to ehci-omap changes
  ARM: OMAP3: Beagle: Adapt to ehci-omap changes
  ARM: OMAP2+: omap4panda: Adapt to ehci-omap changes
  ARM: OMAP2+: omap-usb-host: Add usbhs_init_phys()
  ...

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-04-08 19:06:51 +02:00
David Teigland
9000831839 dlm: avoid unnecessary posix unlock
When the kernel clears flocks/plocks during close, it calls posix
unlock when there are flocks but no posix locks.  Without this
patch, that unnecessary posix unlock is passed to userland
(dlm_controld), across the cluster, and back to the kernel.
This can create a lot of plock activity, even when no posix
locks had been used.

This patch copies the nfs approach, and skips the full posix
unlock if there is no plock found during the vfs unlock phase.

Signed-off-by: David Teigland <teigland@redhat.com>
2013-04-08 12:03:15 -05:00
Dmitry Monakhov
e8238f9a83 ext4: fix incorrect lock ordering for ext4_ind_migrate
existing locking ordering: journal-> i_data_sem, but
ext4_ind_migrate() grab locks in opposite order which may result in
deadlock.

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2013-04-08 13:02:25 -04:00
Arnd Bergmann
797b3a9ee7 Merge branch 'gic/cleanup' into next/soc2
Both zynq and shmobile have conflicts against the gic cleanup
series, resolved here.

Conflicts:
	arch/arm/mach-shmobile/smp-emev2.c
	arch/arm/mach-shmobile/smp-r8a7779.c
	arch/arm/mach-shmobile/smp-sh73a0.c
	arch/arm/mach-zynq/platsmp.c
	drivers/gpio/gpio-pl061.c

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-04-08 18:59:19 +02:00
Tony Lindgren
5e7deed712 OMAP PM fixes for v3.10
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Merge tag 'omap-pm-v3.10/fixes/pm' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into omap-for-v3.10/fixes-pm

OMAP PM fixes for v3.10
2013-04-08 09:58:00 -07:00
Paul Bolle
f2d614c4be mfd: da9055: Drop "select PMIC_DA9055"
The Kconfig entry for DA9055 PMIC Support selects PMIC_DA9055. That was
probably inspired by the similar select statement in the entry for
DA9052/53 PMIC with I2C. But the DA9055 PMIC only comes in an I2C
variant and its driver doesn't need a separate Kconfig symbol for shared
code. In any case, this select can be dropped as PMIC_DA9055 doesn't
exist.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-04-08 18:56:06 +02:00
Dr. Tilmann Bubeck
393d1d1d76 ext4: implementation of a new ioctl called EXT4_IOC_SWAP_BOOT
Add a new ioctl, EXT4_IOC_SWAP_BOOT which swaps i_blocks and
associated attributes (like i_blocks, i_size, i_flags, ...) from the
specified inode with inode EXT4_BOOT_LOADER_INO (#5). This is
typically used to store a boot loader in a secure part of the
filesystem, where it can't be changed by a normal user by accident.
The data blocks of the previous boot loader will be associated with
the given inode.

This usercode program is a simple example of the usage:

int main(int argc, char *argv[])
{
  int fd;
  int err;

  if ( argc != 2 ) {
    printf("usage: ext4-swap-boot-inode FILE-TO-SWAP\n");
    exit(1);
  }

  fd = open(argv[1], O_WRONLY);
  if ( fd < 0 ) {
    perror("open");
    exit(1);
  }

  err = ioctl(fd, EXT4_IOC_SWAP_BOOT);
  if ( err < 0 ) {
    perror("ioctl");
    exit(1);
  }

  close(fd);
  exit(0);
}

[ Modified by Theodore Ts'o to fix a number of bugs in the original code.]

Signed-off-by: Dr. Tilmann Bubeck <t.bubeck@reinform.de>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2013-04-08 12:54:05 -04:00
Tomasz Figa
beddf63fc8 ARM: EXYNOS: Add secure firmware support to secondary CPU bring-up
Boards using secure firmware must use different CPU boot registers and
call secure firmware to boot the CPU.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-04-09 01:52:30 +09:00
Tomasz Figa
41de89860b ARM: EXYNOS: Add IO mapping for non-secure SYSRAM.
On TrustZone-enabled boards the non-secure SYSRAM is used for secondary
CPU bring-up, so add a mapping for it.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-04-09 01:52:30 +09:00
Tomasz Figa
bca28f8f6b ARM: EXYNOS: Add support for Exynos secure firmware
Some Exynos-based boards contain secure firmware and must use firmware
operations to set up some hardware.

This patch adds firmware operations for Exynos secure firmware and a way
for board code and device tree to specify that they must be used.

Example of use:

In board code:

  ...MACHINE_START(...)
          /* ... */
          .init_early   = exynos_firmware_init,
          /* ... */
  MACHINE_END

In device tree:

  / {
          /* ... */

          firmware@0203F000 {
                  compatible = "samsung,secure-firmware";
                  reg = <0x0203F000 0x1000>;
          };

          /* ... */
  };

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-04-09 01:52:30 +09:00
Tomasz Figa
a4a18d2b3a ARM: EXYNOS: Add support for secure monitor calls
Some boards use secure monitor calls to communicate with secure
firmware.

This patch adds exynos_smc function which uses smc assembly instruction
to do secure monitor calls.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-04-09 01:52:06 +09:00
Tomasz Figa
7366b92a77 ARM: Add interface for registering and calling firmware-specific operations
Some boards are running with secure firmware running in TrustZone secure
world, which changes the way some things have to be initialized.

This patch adds an interface for platforms to specify available firmware
operations and call them.

A wrapper macro, call_firmware_op(), checks if the operation is provided
and calls it if so, otherwise returns -ENOSYS to allow fallback to
legacy operation..

By default no operations are provided.

Example of use:

In code using firmware ops:

  __raw_writel(virt_to_phys(exynos4_secondary_startup),
               CPU1_BOOT_REG);

  /* Call Exynos specific smc call */
  if (call_firmware_op(cpu_boot, cpu) == -ENOSYS)
          cpu_boot_legacy(...); /* Try legacy way */

  gic_raise_softirq(cpumask_of(cpu), 1);

In board-/platform-specific code:

  static int platformX_do_idle(void)
  {
          /* tell platformX firmware to enter idle */
          return 0;
  }

  static int platformX_cpu_boot(int i)
  {
          /* tell platformX firmware to boot CPU i */
          return 0;
  }

  static const struct firmware_ops platformX_firmware_ops = {
          .do_idle      = exynos_do_idle,
          .cpu_boot     = exynos_cpu_boot,
          /* other operations not available on platformX */
  };

  static void __init board_init_early(void)
  {
          register_firmware_ops(&platformX_firmware_ops);
  }

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-04-09 01:52:06 +09:00
Chanho Park
db35234ec7 ARM: EXYNOS: Add arm-pmu DT binding for exynos421x
This patch adds a arm-pmu node to bind device tree for exynos4210.
The exynos4210 and 4212 have two cpus which includes a pmu. In contrast, the
exynos4412 has 4 cpus and pmus. We need to define two more pmus for this type
board. However, supporting arm-pmu for the exynos4412 will handle it later
because there is no dts support for 4412 based board.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-04-09 01:49:16 +09:00
Chanho Park
4f801e59f3 ARM: EXYNOS: Add arm-pmu DT binding for exynos5250
This patch enables arm-pmu to bind device tree for exynos5250. The exynos5250
has two pmus which have combiner irq type.

Reviewed-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-04-09 01:48:29 +09:00
Chanho Park
b7bbdbeebd ARM: EXYNOS: Enable PMUs for exynos4
This patch defines irq numbers of ARM performance monitoring unit for exynos4.
Firs of all, we need to fix IRQ_PMU correctly and to split pmu initialization
of exynos from plat-samsung for easily defining it.

The number of CPU cores and PMU irq numbers are vary according to soc types.
So, we need to identify each soc type using soc_is_xxx function and to define
the pmu irqs dynamically. For example, the exynos4412 has 4 cpu cores and pmus.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-04-09 01:47:45 +09:00
Chanho Park
4e164dc5fa irqchip: exynos-combiner: Correct combined IRQs for exynos4
This patch corrects combined IRQs for exynos4 series platform. The exynos4412
has four extra combined irq group and the exynos4212 has two more combined
irqs
than exynos4210. Each irq is mapped to IRQ_SPI(xx). Unfortunately, extra 4
combined IRQs isn't sequential. So, we need to map the irqs manually.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[kgene.kim@samsung.com: changes moved into drivers/irqchip/]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-04-09 01:47:44 +09:00
Chanho Park
df7ef462a2 irqchip: exynos-combiner: Add set_irq_affinity function for combiner_irq
This patch adds set_irq_affinity function for combiner_irq. We need this
function to enable a arm-pmu because the pmu of exynos has combined type
irqs.

Reviewed-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[kgene.kim@samsung.com: changes moved into drivers/irqchip/]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-04-09 01:47:44 +09:00
Arnd Bergmann
c985d7e325 Merge branch 'zynq/core-smp' of git://git.xilinx.com/linux-xlnx into next/soc2
From Michal Simek <michal.simek@xilinx.com>:

This branch is based on zynq/clksrc/cleanup parts because
there are some dependencies on moving timer to generic location.

I could based it on standard Linux tagged version but you will get
several conflicts you will have to resolve.
If you are OK to resolving these problems, please let me know
I will create another branch with core-smp changes which are not based
on zynq/clksrc/cleanup branch.

* 'zynq/core-smp' of git://git.xilinx.com/linux-xlnx:
  arm: zynq: Add hotplug support
  arm: zynq: Add smp support
  arm: zynq: Add smp_twd timer
  arm: zynq: Get rid of xilinx function prefix
  arm: zynq: Add support for system reset
  arm: zynq: Move slcr initialization to separate file
  arm: zynq: Load scu baseaddress at run time

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-04-08 18:42:16 +02:00
Manjunath Goudar
8c68e84f3a USB: EHCI: make ehci-msm a separate driver
Separate the  Qualcomm QSD/MSM on-chip host controller driver from
ehci-hcd host code so that it can be built as a separate driver module.
This work is part of enabling multi-platform kernels on ARM;
however, note that other changes are still needed before Qualcomm QSD/MSM
can be booted with a multi-platform kernel, which is not expected before
3.11.

With the infrastructure added by Alan Stern in patch 3e0232039
"USB: EHCI: prepare to make ehci-hcd a library module", we can
avoid this problem by turning a bus glue into a separate
module, as we do here for the msm bus glue.

In V5 (arnd):
 - add FIXME about missing usb_add_hcd() or usb_remove_hcd() calls

In V3:
 - Detailed commit message added here describing why this patch is required.
 - Arranged  #include's in alphabetical order.
 - driver.name initialized hcd_name[] = "ehci-msm" in platform_driver
   structure initialization instead of "msm-ehci", which was the reason
   why it broke in EHCI USB testing

In V2:
Tegra patch related changes removed from this patch.

Signed-off-by: Manjunath Goudar <manjunath.goudar@linaro.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-08 09:40:20 -07:00