i915 open-coded logic that was essentially equivalent to the new API.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

I'm not sure I understand the intent of the previous behavior.  mmap
on /dev/agpgart and DRM_AGP maps had no cache flags set, so they
would be fully cacheable.  But the DRM code (most of the time) would
add a write-combining MTRR that would change the effective memory
type to WC.

The new behavior just requests WC explicitly for all AGP maps.

If there is any code out there that expects cacheable access to the
AGP aperture (because the drm driver doesn't request an MTRR or
because it's using /dev/agpgart directly), then it will now end up
with a UC or WC mapping, depending on the architecture and PAT
availability.  But cacheable access to the aperture seems like it's
asking for trouble, because, AIUI, the aperture is an alias of RAM.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

Previously, DRM_FRAME_BUFFER mappings, as well as DRM_REGISTERS
mappings with DRM_WRITE_COMBINING set, resulted in an unconditional
MTRR being added but the actual mappings being created as UC-.

Now these mappings have the MTRR added only if needed, but they will
be mapped with pgprot_writecombine.

The non-WC DRM_REGISTERS case now uses pgprot_noncached instead of
hardcoding the bit twiddling.

The DRM_AGP case is unchanged for now.

[airlied: fix ppc build]
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

This replaces drm_mtrr_{add,del} with arch_phys_wc_{add,del}.  The
interface is simplified (because the base and size parameters to
drm_mtrr_del never did anything), and it no longer adds MTRRs on
systems that don't need them.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

Several drivers currently use mtrr_add through various #ifdef guards
and/or drm wrappers.  The vast majority of them want to add WC MTRRs
on x86 systems and don't actually need the MTRR if PAT (i.e.
ioremap_wc, etc) are working.

arch_phys_wc_add and arch_phys_wc_del are new functions, available
on all architectures and configurations, that add WC MTRRs on x86 if
needed (and handle errors) and do nothing at all otherwise.  They're
also easier to use than mtrr_add and mtrr_del, so the call sites can
be simplified.

As an added benefit, this will avoid wasting MTRRs and possibly
warning pointlessly on PAT-supporting systems.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

Merge tag 'drm-intel-next-2013-05-20-merged' of git://people.freedesktop.org/~danvet/drm-intel into drm-next

Daniel writes:
Highlights (copy-pasted from my testing cycle mails):
- fbc support for Haswell (Rodrigo)
- streamlined workaround comments, including an igt tool to grep for
  them (Damien)
- sdvo and TV out cleanups, including a fixup for sdvo multifunction devices
- refactor our eDP mess a bit (Imre)
- don't register the hdmi connector on haswell when desktop eDP is present
- vlv support is no longer preliminary!
- more vlv fixes from Jesse for stolen and dpll handling
- more flexible power well checking infrastructure from Paulo
- a few gtt patches from Ben
- a bit of OCD cleanups for transcoder #defines and an assorted pile
  of smaller things.
- fixes for the gmch modeset sequence
- a bit of OCD around plane/pipe usage (Ville)
- vlv turbo support (Jesse)
- tons of vlv modeset fixes (Jesse et al.)
- vlv pte write fixes (Kenneth Graunke)
- hpd filtering to avoid costly probes on unaffected outputs (Egbert Eich)
- intel dev_info cleanups and refactorings (Damien)
- vlv rc6 support (Jesse)
- random pile of fixes around non-24bpp modes handling
- asle/opregion cleanups and locking fixes (Jani)
- dp dpll refactoring
- improvements for reduced_clock computation on g4x/ilk+
- pfit state refactored to use pipe_config (Jesse)
- lots more computed modeset state moved to pipe_config, including readout
  and cross-check support
- fdi auto-dithering for ivb B/C links, using the neat pipe_config
  improvements
- drm_rect helpers plus sprite clipping fixes (Ville)
- hw context refcounting (Mika + Ben)

* tag 'drm-intel-next-2013-05-20-merged' of git://people.freedesktop.org/~danvet/drm-intel: (155 commits)
  drm/i915: add support for dvo Chrontel 7010B
  drm/i915: Use pipe config state to control gmch pfit enable/disable
  drm/i915: Use pipe_config state to disable ilk+ pfit
  drm/i915: panel fitter hw state readout&check support
  drm/i915: implement WADPOClockGatingDisable for LPT
  drm/i915: Add missing platform tags to FBC workaround comments
  drm/i915: rip out an unused lvds_reg variable
  drm/i915: Compute WR PLL dividers dynamically
  drm/i915: HSW FBC WaFbcDisableDpfcClockGating
  drm/i915: HSW FBC WaFbcAsynchFlipDisableFbcQueue
  drm/i915: Enable FBC at Haswell.
  drm/i915: IVB FBC WaFbcDisableDpfcClockGating
  drm/i915: IVB FBC WaFbcAsynchFlipDisableFbcQueue
  drm/i915: Add support for FBC on Ivybridge.
  drm/i915: Organize VBT stuff inside drm_i915_private
  drm/i915: make SDVO TV-out work for multifunction devices
  drm/i915: rip out now unused is_foo tracking from crtc code
  drm/i915: rip out TV-out lore ...
  drm/i915: drop TVclock special casing on ilk+
  drm/i915: move sdvo TV clock computation to intel_sdvo.c
  ...

Just the usual printk related warnings.
Signed-off-by: Dave Airlie <airlied@redhat.com>

just a few minor fixes for radeon.

* 'drm-fixes-3.10' of git://people.freedesktop.org/~agd5f/linux:
  radeon: use max_bus_speed to activate gen2 speeds
  drm/radeon: narrow scope of Apple re-POST hack
  drm/radeon: don't check crtcs in card_posted() on cards without DCE
  drm/radeon: fix card_posted check for newer asics
  drm/radeon: fix typo in cu_per_sh on verde
  drm/radeon: UVD block on SUMO2 is the same as on SUMO

radeon currently uses a drm function to get the speed capabilities for
the bus, drm_pcie_get_speed_cap_mask. However, this is a non-standard
method of performing this detection and this patch changes it to use
the max_bus_speed attribute.

From: Lucas Kannebley Tavares <lucaskt@linux.vnet.ibm.com>
Signed-off-by: Kleber Sacilotto de Souza <klebers@linux.vnet.ibm.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

This narrows the scope of the apple re-POST hack added in:
drm/radeon: re-POST the asic on Apple hardware when booted via EFI

That patch prevents UVD from working on macs when booted in EFI
mode.  The original patch fixed macbook2,1 systems which were
r5xx and hence have no UVD.  Limit the hack to those systems to
prevent UVD breakage on newer systems.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=63935

Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Matthew Garrett <matthew.garrett@nebula.com>

Skip checking crtcs in hardware without them.  Avoids checking
non-existent hardware.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Newer asics have variable numbers of crtcs.  Use that
rather than the asic family to determine which crtcs
to check.  This avoids checking non-existent crtcs or
missing crtcs on certain asics.
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Should be 5 rather than 2.

Noticed by sroland and glisse on IRC.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

The chip id for SUMO2 isn't used.

fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=63935Tested-By: Dave Witbrodt <dawitbro@sbcglobal.net>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

Daniel writes:
A few fixes, nothing shocking:
- More Haswell pci ids. Includes a pile of marketing spare ids (which
  despite the spare moniker show up all over the place).
- Fix a regression in handling modeset failures, resulting in black
  screens on 3 pipe setups when we've run out of pch plls (Chris).
- Fix up the setcrtc semantics to unconditionally enable the outputs.
  Juding from git digging that has (kinda) always been the case and neatly
  fixes a few long-standing (i.e. forever) bug reports (Imre).
- jiffies_timeout + 1 patches from Imre. They partially fix spurious
  wait_event failures in the interrupt-driven dp aux/i2c code. The other
  part is a core patch for the wait_event macros going in through -mm. A
  few patches more than strictly required since Imre is pushing for a
  general solution in 3.11.

* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel:
  drm/i915: avoid premature DP AUX timeouts
  drm/i915: avoid premature timeouts in __wait_seqno()
  drm/i915: use msecs_to_jiffies_timeout instead of open coding the same
  drm/i915: add msecs_to_jiffies_timeout to guarantee minimum duration
  drm/i915: force full modeset if the connector is in DPMS OFF mode
  drm/i915: Propagate errors back from fb set-base
  drm/i915: Adding more reserved PCI IDs for Haswell.

Merge branch 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next

Inki writes:
  This pull request includes drm_send_vblank_event() helper
   relevant patch I missed and code cleanups. And also it fixes
   a pended page flip issue.

* 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
  drm/exynos: replace request_threaded_irq with devm function
  drm/exynos: remove unnecessary devm_kfree
  drm/exynos: fix build warnings from ipp fimc
  drm/exynos: cleanup device pointer usages
  drm/exynos: wait for the completion of pending page flip
  drm/exynos: use drm_send_vblank_event() helper
  drm/exynos: page flip fixes
  drm/exynos: exynos_hdmi: Pass correct pointer to free_irq()
  drm/exynos: exynos_drm_ipp: Fix incorrect usage of IS_ERR_OR_NULL
  drm/exynos: exynos_drm_fbdev: Fix incorrect usage of IS_ERR_OR_NULL

Conflicts:
	drivers/gpu/drm/exynos/exynos_hdmi.c

Pull the vblank event changes into a Linus master tree to make merging
easier.

Pull PCI updates from Bjorn Helgaas:
 "Here are some more fixes for v3.10.  The Moorestown update broke Intel
  Medfield devices, so I reverted it.  The acpiphp change fixes a
  regression: we broke hotplug notifications to host bridges when we
  split acpiphp into the host-bridge related part and the
  endpoint-related part.

  Moorestown
      Revert "x86/pci/mrst: Use configuration mechanism 1 for 00:00.0, 00:02.0, 00:03.0"
  Hotplug
      PCI: acpiphp: Re-enumerate devices when host bridge receives Bus Check"

* tag 'pci-v3.10-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  Revert "x86/pci/mrst: Use configuration mechanism 1 for 00:00.0, 00:02.0, 00:03.0"
  PCI: acpiphp: Re-enumerate devices when host bridge receives Bus Check

Pull input updates from Dmitry Torokhov:
 "A few fixups to Wacom and eGalax touchscreen driver"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: wacom - add an eraser to DTH2242/DTK2241
  Input: wacom - add a few new styli for Cintiq series
  Input: wacom - add three new display tablets
  Input: egalax_ts - ABS_MT_POSITION_Y not reported well

Pull tty/serial fixes from Greg Kroah-Hartman:
 "Here are some tty / serial driver fixes for 3.10-rc2.

  Nothing huge, although the rocket driver fix looks large, it's just
  moving the code around to fix the reported build issues in it.  Other
  than that, this has the fix for the of-reported lockdep warning from
  the vt layer, as well as some other needed bugfixes.

  All of these have been in linux-next for a while"

* tag 'tty-3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: mxser: Fix build warning introduced by dfc7b837 (Re: linux-next: build warning after merge of the tty.current tree)
  tty: mxser: fix usage of opmode_ioaddr
  serial: 8250_dw: add ACPI ID for Intel BayTrail
  TTY: Fix tty miss restart after we turn off flow-control
  tty/vt: Fix vc_deallocate() lock order
  TTY: ehv_bytechan: add missing platform_driver_unregister() when module exit
  TTY: rocket, fix more no-PCI warnings
  serial: mcf: missing uart_unregister_driver() on error in mcf_init()
  tty: serial: mpc5xxx: fix error handing in mpc52xx_uart_init()
  serial: samsung: add missing platform_driver_unregister() when module exit
  serial: pl011: protect attribute read from NULL platform data struct
  tty: nwpserial: Pass correct pointer to free_irq()
  serial: 8250_dw: Add valid clk pointer check

Pull staging driver fixes from Greg Kroah-Hartman:
 "Here are some staging tree driver fixes for 3.10-rc2

  The drivers/iio/ changes are here as they are still tied into
  drivers/staging/iio/.

  Nothing major, just a number of small bugfixes, and a larger
  documentation update for the ramster code."

* tag 'staging-3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (28 commits)
  staging: dwc2: remove compile warning for USB_DWC2_TRACK_MISSED_SOFS
  iio: exynos_adc: fix wrong structure extration in suspend and resume
  iio:common:st: added disable function after read info raw data
  iio: dac: Fix build error when CONFIG_SPI_MASTER=y && CONFIG_I2C=m
  staging:iio:light:tsl2x7x: fix the error handling in tsl2x7x_probe()
  staging/iio/mxs-lradc: fix preenable for multiple buffers
  staging: imx-drm: imx-tve: Check the return value of 'regulator_enable()'
  staging: video: imx: Select VIDEOMODE_HELPERS for parallel display
  staging: ramster: add how-to document
  staging: dwc2: Fix dma-enabled platform devices using a default dma_mask
  staging: vt6656: [bug] Fix missing spin lock in iwctl_siwpower.
  staging: Swap zram and zsmalloc in Kconfig
  staging: android: logger: use kuid_t instead of uid_t
  staging: zcache: Fix incorrect module_param_array types
  staging/solo6x10: depend on CONFIG_FONTS
  staging/drm: imx: add missing dependencies
  staging: ste_rmi4: Suppress 'ignoring return value of ‘regulator_enable()' warning
  staging: sep: fix driver build and kconfig
  staging: nvec: cleanup childs on remove
  staging: nvec: implement unregistering of notifiers
  ...

Merge tag 'driver-core-3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core fixes from Greg Kroah-Hartman:
 "Here are 3 tiny driver core fixes for 3.10-rc2.

  A needed symbol export, a change to make it easier to track down
  offending sysfs files with incorrect attributes, and a klist bugfix.

  All have been in linux-next for a while"

* tag 'driver-core-3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  klist: del waiter from klist_remove_waiters before wakeup waitting process
  driver core: print sysfs attribute name when warning about bogus permissions
  driver core: export subsys_virtual_register

Pull char/misc driver fixes from Greg Kroah-Hartman:
 "Here are some small char/misc driver fixes for 3.10-rc2.

  Nothing major here, just a number of fixes for things that people have
  reported, and a MAINTAINERS update for the recent changes for the
  hyperv files that went into 3.10-rc1."

* tag 'char-misc-3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  ttyprintk: Fix NULL pointer deref by setting tty_port ops after initializing port
  uio: UIO_DMEM_GENIRQ should depend on HAS_DMA
  MAINTAINERS: update Hyper-V file list
  mei: bus: Reset event_cb when disabling a device
  Drivers: hv: Fix a bug in get_vp_index()
  mei: fix out of array access to me clients array
  Char: lp, protect LPGETSTATUS with port_mutex
  dummy-irq: require the user to specify an IRQ number

Pull USB fixes from Greg Kroah-Hartman:
 "Here are a number of tiny USB bugfixes / new device ids for 3.10-rc2

  The majority of these are USB gadget fixes, but they are all small.
  Other than that, some USB host controller fixes, and USB serial driver
  fixes for problems reported with them.

  Also hopefully a fixed up USB_OTG Kconfig dependancy, that one seems
  to be almost impossible to get right for all of the different
  platforms these days."

* tag 'usb-3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (56 commits)
  USB: cxacru: potential underflow in cxacru_cm_get_array()
  USB: ftdi_sio: Add support for Newport CONEX motor drivers
  USB: option: add device IDs for Dell 5804 (Novatel E371) WWAN card
  usb: ohci: fix goto wrong tag in err case
  usb: isp1760-if: fix memleak when platform_get_resource fail
  usb: ehci-s5p: fix memleak when fallback to pdata
  USB: serial: clean up chars_in_buffer
  USB: ti_usb_3410_5052: fix chars_in_buffer overhead
  USB: io_ti: fix chars_in_buffer overhead
  USB: ftdi_sio: fix chars_in_buffer overhead
  USB: ftdi_sio: clean up get_modem_status
  USB: serial: add generic wait_until_sent implementation
  USB: serial: add wait_until_sent operation
  USB: set device dma_mask without reference to global data
  USB: Blacklisted Cinterion's PLxx WWAN Interface
  usb: option: Add Telewell TW-LTE 4G
  USB: EHCI: remove bogus #error
  USB: reset resume quirk needed by a hub
  USB: usb-stor: realtek_cr: Fix compile error
  usb, chipidea: fix link error when USB_EHCI_HCD is a module
  ...

Pull kvm bugfixes from Gleb Natapov.

* git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM/MIPS32: Wrap calls to gfn_to_pfn() with srcu_read_lock/unlock()
  KVM/MIPS32: Move include/asm/kvm.h => include/uapi/asm/kvm.h since it is a user visible API.
  KVM: take over co-maintainership from Marcelo, fix MAINTAINERS entry

Fix build error io vmw_vmci.ko when CONFIG_VMWARE_VMCI=m by chaning
iovec.o from lib-y to obj-y.

  ERROR: "memcpy_toiovec" [drivers/misc/vmw_vmci/vmw_vmci.ko] undefined!
  ERROR: "memcpy_fromiovec" [drivers/misc/vmw_vmci/vmw_vmci.ko] undefined!
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

plus send begin and end of express keys events for
Cintiq 13HD and DTH2242/DTK2241
Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

devm_request_threaded_irq is used instead of request_threaded_irq
and free_irq is removed.
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

devm_kfree does not need for fail case of probe function and for
remove function.
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

Becuase of order of headers, there are build warnings and they are
fixed with this patch.
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

Struct device pointer got from platform device pointer is already
alsigned as variable, but some functions do not use device pointer.
So this patch replaces thoes usages.
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

This patch fixes the issue that drm_vblank_get() is failed.

The issus occurs when next page flip request is tried
if previous page flip event wasn't completed yet and then
dpms became off.

So this patch make sure that page flip event is completed
before dpms goes to off.
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

Rebased.
Signed-off-by: Rob Clark <rob@ti.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

Pull AVR32 update from Hans-Christian Egtvedt:
 "wow, it has gone 10 releases since my last request :("

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32:
  avr32: fix building warnings caused by redefinitions of HZ
  avr32: fix relocation check for signed 18-bit offset
  avr32: move NODES_SHIFT into Kconfig and delete numnodes.h

Pull MIPS update from Ralf Baechle:
 - Fix a build error if <linux/printk.h> is included without
   <linux/linkage.h> having been included before.
 - Cleanup and fix the damage done by the generic idle loop patch.
 - A kprobes fix that brings the MIPS code in line with what other
   architectures are for quite a while already.
 - Wire up the native getdents64(2) syscall for 64 bit - for some reason
   it was only for the compat ABIs.  This has been reported to cause an
   application issue.  This turned out bigger than I meant but the wait
   instruction support code was driving me nuts.

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: N64: Wire getdents64(2)
  kprobes/mips: Fix to check double free of insn slot
  MIPS: Idle: Break r4k_wait into two functions and fix it.
  MIPS: Idle: Do address fiddlery in helper functions.
  MIPS: Idle: Consolidate all declarations in <asm/idle.h>.
  MIPS: Idle: Don't call local_irq_disable() in cpu_wait() implementations.
  MIPS: Idle: Re-enable irqs at the end of r3081, au1k and loongson2 cpu_wait.
  MIPS: Idle: Make call of function pointer readable.
  MIPS: Idle: Consistently reformat inline assembler.
  MIPS: Idle: cleaup SMTC idle hook as per Linux coding style.
  MIPS: Consolidate idle loop / WAIT instruction support in a single file.
  MIPS: clock.h: Remove declaration of cpu_wait.
  Add include dependencies to <linux/printk.h>.
  MIPS: Rewrite pfn_valid to work in modules, too.

Remove the compile-time warning for this config option, and instead
warn that it is experimental in the Kconfig text
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Merge tag 'iio-fixes-for-3.10a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

First round of IIO fixes for the 3.10 cycle.

The usual mixed bag of little fixes.

1) A fix for mxs-lradc having missed out on some global abi changes that and
   hence being unable to start up buffered output.
2) Clean up error handling in tsl2x7x
3) A build fix for some of the dac drivers when they have spi master support
   built in, but i2c support build as a module.
4) Add a missing disable after a oneshot capture to the st sensor core.
5) Exynos adc driver took a novel an incorrect route to get at its private
   data store.

The exynos_adc device structure was wrongly extracted from the dev*
correcting the same.

Using the regular conversion of
struct device* -> struct platform_device* -> struct exynos_adc* seems wrong.
Instead we should be doing
struct device* -> struct iio_dev* -> struct exynos_adc*
Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Signed-off-by: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>