This patch replaces all custom samsung,power-domain dt
properties with generic power domain bindings and updates
documentation Samsung's devices referring to old binding.
Suggested-by: NKevin Hilman <khilman@kernel.org>
Signed-off-by: NMarek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
[javier.martinez@collabora.co.uk: tested on the Exynos5800 Peach Pi Chromebook]
Tested-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: NKukjin Kim <kgene@kernel.org>

The regulator core now has support to choose if a regulator
has to be enabled or disabled during system suspend and also
supports changing the regulator operating mode during runtime
and when the system enters into sleep mode.

To lower power during suspend, configure the regulators state
using the same configuration found in the ChromeOS 3.8 kernel
Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: NKukjin Kim <kgene@kernel.org>

The Exynos5420 Peach Pit and Exynos5800 Peach Pi boards have a built-in
Silicon Motion USB UVC WebCam whose power supply is the tps65090 fet5
regulator. Since the camera uses the generic USB Video Class driver and
this does not grab a regulator, mark the regulator as always on so the
USB device is enumerated and usable.
Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: NKukjin Kim <kgene@kernel.org>

The Exynos5420 Peach Pit and Exynos5800 Peach Pi boards have both
a power and lid GPIO keys but only the former was defined in the
DTS. Add DTS snippets for the lid GPIO key too. These were taken
from the downstream ChromeOS 3.8 kernel tree.
Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: NKukjin Kim <kgene@kernel.org>

The Exynos5250 Snow Chromebook has GPIO keys for power and lid
so the SoC I/O pins have to be configured in external interrupt
mode. Currently, this is working without setting the pinctrl
lines but is better to set it explicitly instead of relying on
the previous state of the I/O pins.

The DTS snippets were taken from the downstream ChromeOS tree.
Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: NKukjin Kim <kgene@kernel.org>

This patch adds MIPI-DSI and MIPI-DSI based S6E63J0X03 AMOLED panel
device nodes for Exynos3250 Rinato board.
Signed-off-by: NInki Dae <inki.dae@samsung.com>
Acked-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NKukjin Kim <kgene@kernel.org>

This patch adds fimd device node which is a display controller
for Exynos3250 Rinato board.
Signed-off-by: NInki Dae <inki.dae@samsung.com>
Acked-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NKukjin Kim <kgene@kernel.org>

This patch replaces number by macro in gpio keys for exynos3250 boards.

Cc: Youngjun Cho <yj44.cho@samsung.com>
Cc: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NBeomho Seo <beomho.seo@samsung.com>
Signed-off-by: NKukjin Kim <kgene@kernel.org>

This patch removes unnecessary property of gpio-keys node. The
gpio-keys driver doesn't use interrupts and interrupt-parent.

Cc: Youngjun Cho <yj44.cho@samsung.com>
Cc: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NBeomho Seo <beomho.seo@samsung.com>
Signed-off-by: NKukjin Kim <kgene@kernel.org>

This patch adds device tree node for hsotg to control USB 2.0 Device.
Signed-off-by: NJaewon Kim <jaewon02.kim@samsung.com>
Signed-off-by: NKukjin Kim <kgene@kernel.org>

This patch enables hsotg and usbphy node to use USB 2.0 Device.
Signed-off-by: NJaewon Kim <jaewon02.kim@samsung.com>
Signed-off-by: NKukjin Kim <kgene@kernel.org>

This patch adds device tree node for hsotg to control USB 2.0 Device.
Signed-off-by: NJaewon Kim <jaewon02.kim@samsung.com>
Signed-off-by: NKukjin Kim <kgene@kernel.org>

This patch adds device tree node for exynos_usbphy to use USB 2.0 Device.
Signed-off-by: NJaewon Kim <jaewon02.kim@samsung.com>
Signed-off-by: NKukjin Kim <kgene@kernel.org>

Add DTS for the Hardkernel Odroid XU3. The name of the DTS file is
kept the same as the vendors naming, which means it's prefixed with
exynos5422 instead of exynos5800 as the SoC name even though it
includes the exyno5800 dtsi.
Signed-off-by: NSjoerd Simons <sjoerd.simons@collabora.co.uk>
Tested-by: NKevin Hilman <khilman@linaro.org>
Signed-off-by: NKukjin Kim <kgene@kernel.org>

There are no users of this symbol left.
Reported-by: NPaul Bolle <pebolle@tiscali.nl>
Signed-off-by: NJesper Nilsson <jesper.nilsson@axis.com>

Move pinmux alloc/dealloc code into functions that don't take
the spinlock so we can use from code that has the spinlock already.

CRISv32 has no working SMP, so spinlocks becomes a NOP,
so deadlock was never seen.
Signed-off-by: NJesper Nilsson <jesper.nilsson@axis.com>

Fixes compile error on allmodconfig.
Signed-off-by: NJesper Nilsson <jesper.nilsson@axis.com>

Signed-off-by: NJesper Nilsson <jesper.nilsson@axis.com>

Also, print kernel version on oops.
Signed-off-by: NJesper Nilsson <jesper.nilsson@axis.com>

Drop i2c_init from this header, it was declared non-static here,
but static in the C-file.
Signed-off-by: NJesper Nilsson <jesper.nilsson@axis.com>

Make driver possible to load as a module and try to handle
locking better.
Signed-off-by: NJesper Nilsson <jesper.nilsson@axis.com>

- Add free_initrd_mem as found by Guenter Roeck <linux@roeck-us.net>
- Add free_init_pages
- Export empty_zero_page symbol
Signed-off-by: NJesper Nilsson <jesper.nilsson@axis.com>

Don't enter watchdog handling if we're already in watchdog handling.

Also some minor formatting tweaks.
Signed-off-by: NJesper Nilsson <jesper.nilsson@axis.com>

strcmp was lost when all other string functions were removed,
but we still have an optimized version for this on CRISv32,
so any driver built as a module would not have access to this symbol.

In a similar manner, we had optimized versions of
csum_partial_copy_from_user and __do_clear_user
but no exported symbols for them, breaking bunch of other drivers
when built as a module.

At the same time, move EXPORT_SYMBOL(__copy_user) and
EXPORT_SYMBOL(__copy_user_zeroing) C-files so it's
located together with the function definition.
Signed-off-by: NJesper Nilsson <jesper.nilsson@axis.com>

Signed-off-by: NJesper Nilsson <jesper.nilsson@axis.com>

Fix headers_install by adjusting the path to arch files.
And delete unused Kbuild file.
Drop special handling of cris in the headers.sh script
as a nice side-effect.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Cc: Mikael Starvik <starvik@axis.com>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: NJesper Nilsson <jesper.nilsson@axis.com>

Fixes the following compile error.

arch/cris/arch-v32/kernel/time.c: In function 'reset_watchdog':
arch/cris/arch-v32/kernel/time.c:121:2:
        error: implicit declaration of function 'global_page_state'
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NJesper Nilsson <jesper.nilsson@axis.com>

File was already deleted.
Signed-off-by: NJesper Nilsson <jesper.nilsson@axis.com>

Having switched over all of the users of CONFIG_PM_RUNTIME to use
CONFIG_PM directly, turn the latter into a user-selectable option
and drop the former entirely from the tree.
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: NUlf Hansson <ulf.hansson@linaro.org>
Acked-by: NKevin Hilman <khilman@linaro.org>

Commit 69111bac ("powerpc: Replace __get_cpu_var uses") introduced
compile breakage to the e500 target by introducing invalid automatically
created C syntax.

Fix up the breakage and make the code compile again.
Signed-off-by: NAlexander Graf <agraf@suse.de>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Load balancing can be triggered in the critical sections protected by
srmmu_context_spinlock in destroy_context() and switch_mm() and can hang
the cpu waiting for the rq lock of another cpu that in turn has called
switch_mm hangning on srmmu_context_spinlock leading to deadlock.

So, disable interrupt while taking srmmu_context_spinlock in
destroy_context() and switch_mm() so we don't deadlock.

See also commit 77b838fa ("[SPARC64]: destroy_context() needs to disable
interrupts.")
Signed-off-by: NAndreas Larsson <andreas@gaisler.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

It turns out that there's a lurking ABI issue.  GCC, when
compiling this in a 32-bit program:

struct user_desc desc = {
	.entry_number    = idx,
	.base_addr       = base,
	.limit           = 0xfffff,
	.seg_32bit       = 1,
	.contents        = 0, /* Data, grow-up */
	.read_exec_only  = 0,
	.limit_in_pages  = 1,
	.seg_not_present = 0,
	.useable         = 0,
};

will leave .lm uninitialized.  This means that anything in the
kernel that reads user_desc.lm for 32-bit tasks is unreliable.

Revert the .lm check in set_thread_area().  The value never did
anything in the first place.

Fixes: 0e58af4e ("x86/tls: Disallow unusual TLS segments")
Signed-off-by: NAndy Lutomirski <luto@amacapital.net>
Acked-by: NThomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org # Only if 0e58af4e is backported
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/d7875b60e28c512f6a6fc0baf5714d58e7eaadbb.1418856405.git.luto@amacapital.netSigned-off-by: NIngo Molnar <mingo@kernel.org>

Starting with POWER8, the subcore logic relies on all threads of a core
being booted so that they can participate in split mode switches. So on
those machines we ignore the smt_enabled_at_boot setting (smt-enabled on
the kernel command line).
Signed-off-by: NGreg Kurz <gkurz@linux.vnet.ibm.com>
[mpe: Update comment and change log to be more precise]
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>

ACCESS_ONCE does not work reliably on non-scalar types. For
example gcc 4.6 and 4.7 might remove the volatile tag for such
accesses during the SRA (scalar replacement of aggregates) step
(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145)

Commit 1365039d ("KVM: s390: Fix ipte locking") replace
ACCESS_ONCE with barriers. Lets use READ_ONCE instead.
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
Acked-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com>

ACCESS_ONCE does not work reliably on non-scalar types. For
example gcc 4.6 and 4.7 might remove the volatile tag for such
accesses during the SRA (scalar replacement of aggregates) step
(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145)

Change the spinlock code to replace ACCESS_ONCE with READ_ONCE.
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
Acked-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com>

ACCESS_ONCE does not work reliably on non-scalar types. For
example gcc 4.6 and 4.7 might remove the volatile tag for such
accesses during the SRA (scalar replacement of aggregates) step
(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145)

Change the spinlock code to replace ACCESS_ONCE with READ_ONCE.
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
Acked-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com>

ACCESS_ONCE does not work reliably on non-scalar types. For
example gcc 4.6 and 4.7 might remove the volatile tag for such
accesses during the SRA (scalar replacement of aggregates) step
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145)

Change the gup code to replace ACCESS_ONCE with READ_ONCE.
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
Acked-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com>

ACCESS_ONCE does not work reliably on non-scalar types. For
example gcc 4.6 and 4.7 might remove the volatile tag for such
accesses during the SRA (scalar replacement of aggregates) step
(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145)

Change the gup code to replace ACCESS_ONCE with READ_ONCE.
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
Acked-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com>

ACCESS_ONCE does not work reliably on non-scalar types. For
example gcc 4.6 and 4.7 might remove the volatile tag for such
accesses during the SRA (scalar replacement of aggregates) step
(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145)

Change the spinlock code to replace ACCESS_ONCE with READ_ONCE.
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
Acked-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com>

They are not used anymore by IA64, move them away.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>