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Author SHA1 Message Date
Linus Torvalds 6df8b74b17 DeviceTree updates for 4.10: 
- Add various vendor prefixes.
 
 - Fix NUMA node handling when "numa=off" is passed on kernel command
   line.
 
 - Coding style Clean-up of overlay handling code.
 
 - DocBook fixes in DT platform driver code
 
 - Altera SoCFPGA binding addtions for freeze bridge, arria10 FPGA
   manager and FPGA bridges.
 
 - Couple of printk message fixes.
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Merge tag 'devicetree-for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull DeviceTree updates from Rob Herring:

 - add various vendor prefixes.

 - fix NUMA node handling when "numa=off" is passed on kernel command
   line.

 - coding style Clean-up of overlay handling code.

 - DocBook fixes in DT platform driver code

 - Altera SoCFPGA binding addtions for freeze bridge, arria10 FPGA
   manager and FPGA bridges.

 - a couple of printk message fixes.

* tag 'devicetree-for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (33 commits)
  dt: pwm: bcm2835: fix typo in clocks property name
  devicetree: add vendor prefix for National Instruments
  Revert "of: base: add support to get machine model name"
  of: Fix issue where code would fall through to error case.
  drivers/of: fix missing pr_cont()s in of_print_phandle_args
  devicetree: bindings: Add vendor prefix for Oki
  devicetree: bindings: Add vendor prefix for Andes Technology Corporation
  dt-bindings: add MYIR Tech hardware vendor prefix
  add bindings document for altera freeze bridge
  ARM: socfpga: add bindings doc for arria10 fpga manager
  ARM: socfpga: add bindings document for fpga bridge drivers
  of: base: add support to get machine model name
  of/platform: clarify of_find_device_by_node refcounting
  of/platform: fix of_platform_device_destroy comment
  of: Remove unused variable overlay_symbols
  of: Move setting of pointer to beside test for non-null
  of: Add back an error message, restructured
  of: Update comments to reflect changes and increase clarity
  of: Remove redundant size check
  of: Update structure of code to be clearer, also remove BUG_ON()
  ...
 2016-12-15 11:49:41 -08:00
Rob Herring 0a8b13eab1 Revert "of: base: add support to get machine model name" 
This reverts commit e5269794d2.
 2016-12-09 10:33:48 -06:00
Marcin Nowakowski 4aa6634440 drivers/of: fix missing pr_cont()s in of_print_phandle_args 
Since the KERN_CONT changes, the current debug printks have a lot of
empty lines making the log messages very hard to read.

Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Signed-off-by: Rob Herring <robh@kernel.org>
 2016-12-09 10:32:40 -06:00
Sudeep Holla e5269794d2 of: base: add support to get machine model name 
Currently platforms/drivers needing to get the machine model name are
replicating the same snippet of code. In some case, the OF reference
counting is either missing or incorrect.

This patch adds support to read the machine model name either using
the "model" or the "compatible" property in the device tree root node
to the core OF/DT code.

This can be used to remove all the duplicate code snippets doing exactly
same thing later.

Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
 2016-11-18 08:46:22 -06:00
Hans de Goede c6c7d83b9c Revert "console: don't prefer first registered if DT specifies stdout-path" 
This reverts commit 05fd007e46 ("console: don't prefer first
registered if DT specifies stdout-path").

The reverted commit changes existing behavior on which many ARM boards
rely.  Many ARM small-board-computers, like e.g.  the Raspberry Pi have
both a video output and a serial console.  Depending on whether the user
is using the device as a more regular computer; or as a headless device
we need to have the console on either one or the other.

Many users rely on the kernel behavior of the console being present on
both outputs, before the reverted commit the console setup with no
console= kernel arguments on an ARM board which sets stdout-path in dt
would look like this:

  [root@localhost ~]# cat /proc/consoles
  ttyS0                -W- (EC p a)    4:64
  tty0                 -WU (E  p  )    4:1

Where as after the reverted commit, it looks like this:

  [root@localhost ~]# cat /proc/consoles
  ttyS0                -W- (EC p a)    4:64

This commit reverts commit 05fd007e46 ("console: don't prefer first
registered if DT specifies stdout-path") restoring the original
behavior.

Fixes: 05fd007e46 ("console: don't prefer first registered if DT specifies stdout-path")
Link: http://lkml.kernel.org/r/20161104121135.4780-2-hdegoede@redhat.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: Thorsten Leemhuis <regressions@leemhuis.info>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-11-11 08:12:37 -08:00
Paul Burton 05fd007e46 console: don't prefer first registered if DT specifies stdout-path 
If a device tree specifies a preferred device for kernel console output
via the stdout-path or linux,stdout-path chosen node properties or the
stdout alias then the kernel ought to honor it & output the kernel
console to that device.  As it stands, this isn't the case.  Whilst we
parse the stdout-path properties & set an of_stdout variable from
of_alias_scan(), and use that from of_console_check() to determine
whether to add a console device as a preferred console whilst
registering it, we also prefer the first registered console if no other
has been selected at the time of its registration.

This means that if a console other than the one the device tree selects
via stdout-path is registered first, we will switch to using it & when
the stdout-path console is later registered the call to
add_preferred_console() via of_console_check() is too late to do
anything useful.  In practice this seems to mean that we switch to the
dummy console device fairly early & see no further console output:

    Console: colour dummy device 80x25
    console [tty0] enabled
    bootconsole [ns16550a0] disabled

Fix this by not automatically preferring the first registered console if
one is specified by the device tree.  This allows consoles to be
registered but not enabled, and once the driver for the console selected
by stdout-path calls of_console_check() the driver will be added to the
list of preferred consoles before any other console has been enabled.
When that console is then registered via register_console() it will be
enabled as expected.

Link: http://lkml.kernel.org/r/20160809151937.26118-1-paul.burton@imgtec.com
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Ivan Delalande <colona@arista.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Jan Kara <jack@suse.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Joe Perches <joe@perches.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-10-07 18:46:30 -07:00
Richard Fitzgerald a67e9472da of: Add array read functions with min/max size limits 
Add a new set of array reading functions that take a minimum and
maximum size limit and will fail if the property size is not within
the size limits. This makes it more convenient for drivers that
use variable-size DT arrays which must be bounded at both ends -
data must be at least N entries but must not overflow the array
it is being copied into. It is also more efficient than making this
functionality out of existing public functions and avoids duplication.

The existing array functions have been left in the API, since there
are a very large number of clients of those functions and their
existing functionality is still useful. This avoids turning a small
API improvement into a major kernel rework.

The old functions have been turned into mininmal static inlines calling
the new functions. The old functions had no upper limit on the actual
size of the dts entry, to preserve this functionality rather than keeping
two near-identical implementations, if the new function is called with
max=0 there is no limit on the size of the dts entry but only the min
number of elements are read.

Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Signed-off-by: Rob Herring <robh@kernel.org>
 2016-09-15 08:33:01 -05:00
Richard Fitzgerald 79ac5d31df of: Make of_find_property_value_of_size take a length range 
In preparation for adding variable-length array reads, change
of_find_property_value_of_size so that it takes an optional
maximum length. If the maximum is passed as 0, the behaviour is
unchanged and it will return a property if it's >= the requested
minimum length. If maximum is non-zero it will only return a
property whose length is min <= l <= max.

Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Signed-off-by: Rob Herring <robh@kernel.org>
 2016-09-15 08:32:57 -05:00
Lucas Stach 34276bb062 of: fix reference counting in of_graph_get_endpoint_by_regs 
The called of_graph_get_next_endpoint() already decrements the refcount
of the prev node, so it is wrong to do it again in the calling function.

Use the for_each_endpoint_of_node() helper to interate through the
endpoint OF nodes, which already does the right thing and simplifies
the code a bit.

Fixes: 8ccd0d0ca0
(of: add helper for getting endpoint node of specific identifiers)
Cc: stable@vger.kernel.org
Reported-by: David Jander <david@protonic.nl>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Rob Herring <robh@kernel.org>
 2016-08-15 11:15:05 -05:00
Markus Elfring beab47d55b of: Delete an unnecessary check before the function call "of_node_put" 
The of_node_put() function tests whether its argument is NULL
and then returns immediately.
Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Rob Herring <robh@kernel.org>
 2016-08-09 12:36:27 -05:00
Linus Torvalds bad60e6f25 powerpc updates for 4.8 # 1 
Highlights:
  - PowerNV PCI hotplug support.
  - Lots more Power9 support.
  - eBPF JIT support on ppc64le.
  - Lots of cxl updates.
  - Boot code consolidation.
 
 Bug fixes:
  - Fix spin_unlock_wait() from Boqun Feng
  - Fix stack pointer corruption in __tm_recheckpoint() from Michael Neuling
  - Fix multiple bugs in memory_hotplug_max() from Bharata B Rao
  - mm: Ensure "special" zones are empty from Oliver O'Halloran
  - ftrace: Separate the heuristics for checking call sites from Michael Ellerman
  - modules: Never restore r2 for a mprofile-kernel style mcount() call from Michael Ellerman
  - Fix endianness when reading TCEs from Alexey Kardashevskiy
  - start rtasd before PCI probing from Greg Kurz
  - PCI: rpaphp: Fix slot registration for multiple slots under a PHB from Tyrel Datwyler
  - powerpc/mm: Add memory barrier in __hugepte_alloc() from Sukadev Bhattiprolu
 
 Cleanups & fixes:
  - Drop support for MPIC in pseries from Rashmica Gupta
  - Define and use PPC64_ELF_ABI_v2/v1 from Michael Ellerman
  - Remove unused symbols in asm-offsets.c from Rashmica Gupta
  - Fix SRIOV not building without EEH enabled from Russell Currey
  - Remove kretprobe_trampoline_holder. from Thiago Jung Bauermann
  - Reduce log level of PCI I/O space warning from Benjamin Herrenschmidt
  - Add array bounds checking to crash_shutdown_handlers from Suraj Jitindar Singh
  - Avoid -maltivec when using clang integrated assembler from Anton Blanchard
  - Fix array overrun in ppc_rtas() syscall from Andrew Donnellan
  - Fix error return value in cmm_mem_going_offline() from Rasmus Villemoes
  - export cpu_to_core_id() from Mauricio Faria de Oliveira
  - Remove old symbols from defconfigs from Andrew Donnellan
  - Update obsolete comments in setup_32.c about entry conditions from Benjamin Herrenschmidt
  - Add comment explaining the purpose of setup_kdump_trampoline() from Benjamin Herrenschmidt
  - Merge the RELOCATABLE config entries for ppc32 and ppc64 from Kevin Hao
  - Remove RELOCATABLE_PPC32 from Kevin Hao
  - Fix .long's in tlb-radix.c to more meaningful from Balbir Singh
 
 Minor cleanups & fixes:
  - Andrew Donnellan, Anna-Maria Gleixner, Anton Blanchard, Benjamin
    Herrenschmidt, Bharata B Rao, Christophe Leroy, Colin Ian King, Geliang
    Tang, Greg Kurz, Madhavan Srinivasan, Michael Ellerman, Michael Ellerman,
    Stephen Rothwell, Stewart Smith.
 
 Freescale updates from Scott:
  - "Highlights include more 8xx optimizations, device tree updates,
    and MVME7100 support."
 
 PowerNV PCI hotplug from Gavin Shan:
  - PCI: Add pcibios_setup_bridge()
  - Override pcibios_setup_bridge()
  - Remove PCI_RESET_DELAY_US
  - Move pnv_pci_ioda_setup_opal_tce_kill() around
  - Increase PE# capacity
  - Allocate PE# in reverse order
  - Create PEs in pcibios_setup_bridge()
  - Setup PE for root bus
  - Extend PCI bridge resources
  - Make pnv_ioda_deconfigure_pe() visible
  - Dynamically release PE
  - Update bridge windows on PCI plug
  - Delay populating pdn
  - Support PCI slot ID
  - Use PCI slot reset infrastructure
  - Introduce pnv_pci_get_slot_id()
  - Functions to get/set PCI slot state
  - PCI/hotplug: PowerPC PowerNV PCI hotplug driver
  - Print correct PHB type names
 
 Power9 idle support from Shreyas B. Prabhu:
  - set power_save func after the idle states are initialized
  - Use PNV_THREAD_WINKLE macro while requesting for winkle
  - make hypervisor state restore a function
  - Rename idle_power7.S to idle_book3s.S
  - Rename reusable idle functions to hardware agnostic names
  - Make pnv_powersave_common more generic
  - abstraction for saving SPRs before entering deep idle states
  - Add platform support for stop instruction
  - cpuidle/powernv: Use CPUIDLE_STATE_MAX instead of MAX_POWERNV_IDLE_STATES
  - cpuidle/powernv: cleanup cpuidle-powernv.c
  - cpuidle/powernv: Add support for POWER ISA v3 idle states
  - Use deepest stop state when cpu is offlined
 
 Power9 PMU from Madhavan Srinivasan:
  - factor out power8 pmu macros and defines
  - factor out power8 pmu functions
  - factor out power8 __init_pmu code
  - Add power9 event list macros for generic and cache events
  - Power9 PMU support
  - Export Power9 generic and cache events to sysfs
 
 Power9 preliminary interrupt & PCI support from Benjamin Herrenschmidt:
  - Add XICS emulation APIs
  - Move a few exception common handlers to make room
  - Add support for HV virtualization interrupts
  - Add mechanism to force a replay of interrupts
  - Add ICP OPAL backend
  - Discover IODA3 PHBs
  - pci: Remove obsolete SW invalidate
  - opal: Add real mode call wrappers
  - Rename TCE invalidation calls
  - Remove SWINV constants and obsolete TCE code
  - Rework accessing the TCE invalidate register
  - Fallback to OPAL for TCE invalidations
  - Use the device-tree to get available range of M64's
  - Check status of a PHB before using it
  - pci: Don't try to allocate resources that will be reassigned
 
 Other Power9:
  - Send SIGBUS on unaligned copy and paste from Chris Smart
  - Large Decrementer support from Oliver O'Halloran
  - Load Monitor Register Support from Jack Miller
 
 Performance improvements from Anton Blanchard:
  - Avoid load hit store in __giveup_fpu() and __giveup_altivec()
  - Avoid load hit store in setup_sigcontext()
  - Remove assembly versions of strcpy, strcat, strlen and strcmp
  - Align hot loops of some string functions
 
 eBPF JIT from Naveen N. Rao:
  - Fix/enhance 32-bit Load Immediate implementation
  - Optimize 64-bit Immediate loads
  - Introduce rotate immediate instructions
  - A few cleanups
  - Isolate classic BPF JIT specifics into a separate header
  - Implement JIT compiler for extended BPF
 
 Operator Panel driver from Suraj Jitindar Singh:
  - devicetree/bindings: Add binding for operator panel on FSP machines
  - Add inline function to get rc from an ASYNC_COMP opal_msg
  - Add driver for operator panel on FSP machines
 
 Sparse fixes from Daniel Axtens:
  - make some things static
  - Introduce asm-prototypes.h
  - Include headers containing prototypes
  - Use #ifdef __BIG_ENDIAN__ #else for REG_BYTE
  - kvm: Clarify __user annotations
  - Pass endianness to sparse
  - Make ppc_md.{halt, restart} __noreturn
 
 MM fixes & cleanups from Aneesh Kumar K.V:
  - radix: Update LPCR HR bit as per ISA
  - use _raw variant of page table accessors
  - Compile out radix related functions if RADIX_MMU is disabled
  - Clear top 16 bits of va only on older cpus
  - Print formation regarding the the MMU mode
  - hash: Update SDR1 size encoding as documented in ISA 3.0
  - radix: Update PID switch sequence
  - radix: Update machine call back to support new HCALL.
  - radix: Add LPID based tlb flush helpers
  - radix: Add a kernel command line to disable radix
  - Cleanup LPCR defines
 
 Boot code consolidation from Benjamin Herrenschmidt:
  - Move epapr_paravirt_early_init() to early_init_devtree()
  - cell: Don't use flat device-tree after boot
  - ge_imp3a: Don't use the flat device-tree after boot
  - mpc85xx_ds: Don't use the flat device-tree after boot
  - mpc85xx_rdb: Don't use the flat device-tree after boot
  - Don't test for machine type in rtas_initialize()
  - Don't test for machine type in smp_setup_cpu_maps()
  - dt: Add of_device_compatible_match()
  - Factor do_feature_fixup calls
  - Move 64-bit feature fixup earlier
  - Move 64-bit memory reserves to setup_arch()
  - Use a cachable DART
  - Move FW feature probing out of pseries probe()
  - Put exception configuration in a common place
  - Remove early allocation of the SMU command buffer
  - Move MMU backend selection out of platform code
  - pasemi: Remove IOBMAP allocation from platform probe()
  - mm/hash: Don't use machine_is() early during boot
  - Don't test for machine type to detect HEA special case
  - pmac: Remove spurrious machine type test
  - Move hash table ops to a separate structure
  - Ensure that ppc_md is empty before probing for machine type
  - Move 64-bit probe_machine() to later in the boot process
  - Move 32-bit probe() machine to later in the boot process
  - Get rid of ppc_md.init_early()
  - Move the boot time info banner to a separate function
  - Move setting of {i,d}cache_bsize to initialize_cache_info()
  - Move the content of setup_system() to setup_arch()
  - Move cache info inits to a separate function
  - Re-order the call to smp_setup_cpu_maps()
  - Re-order setup_panic()
  - Make a few boot functions __init
  - Merge 32-bit and 64-bit setup_arch()
 
 Other new features:
  - tty/hvc: Use IRQF_SHARED for OPAL hvc consoles from Sam Mendoza-Jonas
  - tty/hvc: Use opal irqchip interface if available from Sam Mendoza-Jonas
  - powerpc: Add module autoloading based on CPU features from Alastair D'Silva
  - crypto: vmx - Convert to CPU feature based module autoloading from Alastair D'Silva
  - Wake up kopald polling thread before waiting for events from Benjamin Herrenschmidt
  - xmon: Dump ISA 2.06 SPRs from Michael Ellerman
  - xmon: Dump ISA 2.07 SPRs from Michael Ellerman
  - Add a parameter to disable 1TB segs from Oliver O'Halloran
  - powerpc/boot: Add OPAL console to epapr wrappers from Oliver O'Halloran
  - Assign fixed PHB number based on device-tree properties from Guilherme G. Piccoli
  - pseries: Add pseries hotplug workqueue from John Allen
  - pseries: Add support for hotplug interrupt source from John Allen
  - pseries: Use kernel hotplug queue for PowerVM hotplug events from John Allen
  - pseries: Move property cloning into its own routine from Nathan Fontenot
  - pseries: Dynamic add entires to associativity lookup array from Nathan Fontenot
  - pseries: Auto-online hotplugged memory from Nathan Fontenot
  - pseries: Remove call to memblock_add() from Nathan Fontenot
 
 cxl:
  - Add set and get private data to context struct from Michael Neuling
  - make base more explicitly non-modular from Paul Gortmaker
  - Use for_each_compatible_node() macro from Wei Yongjun
  - Frederic Barrat
    - Abstract the differences between the PSL and XSL
    - Make vPHB device node match adapter's
  - Philippe Bergheaud
    - Add mechanism for delivering AFU driver specific events
    - Ignore CAPI adapters misplaced in switched slots
    - Refine slice error debug messages
  - Andrew Donnellan
    - static-ify variables to fix sparse warnings
    - PCI/hotplug: pnv_php: export symbols and move struct types needed by cxl
    - PCI/hotplug: pnv_php: handle OPAL_PCI_SLOT_OFFLINE power state
    - Add cxl_check_and_switch_mode() API to switch bi-modal cards
    - remove dead Kconfig options
    - fix potential NULL dereference in free_adapter()
  - Ian Munsie
    - Update process element after allocating interrupts
    - Add support for CAPP DMA mode
    - Fix allowing bogus AFU descriptors with 0 maximum processes
    - Fix allocating a minimum of 2 pages for the SPA
    - Fix bug where AFU disable operation had no effect
    - Workaround XSL bug that does not clear the RA bit after a reset
    - Fix NULL pointer dereference on kernel contexts with no AFU interrupts
    - powerpc/powernv: Split cxl code out into a separate file
    - Add cxl_slot_is_supported API
    - Enable bus mastering for devices using CAPP DMA mode
    - Move cxl_afu_get / cxl_afu_put to base
    - Allow a default context to be associated with an external pci_dev
    - Do not create vPHB if there are no AFU configuration records
    - powerpc/powernv: Add support for the cxl kernel api on the real phb
    - Add support for using the kernel API with a real PHB
    - Add kernel APIs to get & set the max irqs per context
    - Add preliminary workaround for CX4 interrupt limitation
    - Add support for interrupts on the Mellanox CX4
    - Workaround PE=0 hardware limitation in Mellanox CX4
    - powerpc/powernv: Fix pci-cxl.c build when CONFIG_MODULES=n
 
 selftests:
  - Test unaligned copy and paste from Chris Smart
  - Load Monitor Register Tests from Jack Miller
  - Cyril Bur
    - exec() with suspended transaction
    - Use signed long to read perf_event_paranoid
    - Fix usage message in context_switch
    - Fix generation of vector instructions/types in context_switch
  - Michael Ellerman
    - Use "Delta" rather than "Error" in normal output
    - Import Anton's mmap & futex micro benchmarks
    - Add a test for PROT_SAO
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Merge tag 'powerpc-4.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
 "Highlights:
   - PowerNV PCI hotplug support.
   - Lots more Power9 support.
   - eBPF JIT support on ppc64le.
   - Lots of cxl updates.
   - Boot code consolidation.

  Bug fixes:
   - Fix spin_unlock_wait() from Boqun Feng
   - Fix stack pointer corruption in __tm_recheckpoint() from Michael
     Neuling
   - Fix multiple bugs in memory_hotplug_max() from Bharata B Rao
   - mm: Ensure "special" zones are empty from Oliver O'Halloran
   - ftrace: Separate the heuristics for checking call sites from
     Michael Ellerman
   - modules: Never restore r2 for a mprofile-kernel style mcount() call
     from Michael Ellerman
   - Fix endianness when reading TCEs from Alexey Kardashevskiy
   - start rtasd before PCI probing from Greg Kurz
   - PCI: rpaphp: Fix slot registration for multiple slots under a PHB
     from Tyrel Datwyler
   - powerpc/mm: Add memory barrier in __hugepte_alloc() from Sukadev
     Bhattiprolu

  Cleanups & fixes:
   - Drop support for MPIC in pseries from Rashmica Gupta
   - Define and use PPC64_ELF_ABI_v2/v1 from Michael Ellerman
   - Remove unused symbols in asm-offsets.c from Rashmica Gupta
   - Fix SRIOV not building without EEH enabled from Russell Currey
   - Remove kretprobe_trampoline_holder from Thiago Jung Bauermann
   - Reduce log level of PCI I/O space warning from Benjamin
     Herrenschmidt
   - Add array bounds checking to crash_shutdown_handlers from Suraj
     Jitindar Singh
   - Avoid -maltivec when using clang integrated assembler from Anton
     Blanchard
   - Fix array overrun in ppc_rtas() syscall from Andrew Donnellan
   - Fix error return value in cmm_mem_going_offline() from Rasmus
     Villemoes
   - export cpu_to_core_id() from Mauricio Faria de Oliveira
   - Remove old symbols from defconfigs from Andrew Donnellan
   - Update obsolete comments in setup_32.c about entry conditions from
     Benjamin Herrenschmidt
   - Add comment explaining the purpose of setup_kdump_trampoline() from
     Benjamin Herrenschmidt
   - Merge the RELOCATABLE config entries for ppc32 and ppc64 from Kevin
     Hao
   - Remove RELOCATABLE_PPC32 from Kevin Hao
   - Fix .long's in tlb-radix.c to more meaningful from Balbir Singh

  Minor cleanups & fixes:
   - Andrew Donnellan, Anna-Maria Gleixner, Anton Blanchard, Benjamin
     Herrenschmidt, Bharata B Rao, Christophe Leroy, Colin Ian King,
     Geliang Tang, Greg Kurz, Madhavan Srinivasan, Michael Ellerman,
     Michael Ellerman, Stephen Rothwell, Stewart Smith.

  Freescale updates from Scott:
   - "Highlights include more 8xx optimizations, device tree updates,
     and MVME7100 support."

  PowerNV PCI hotplug from Gavin Shan:
   - PCI: Add pcibios_setup_bridge()
   - Override pcibios_setup_bridge()
   - Remove PCI_RESET_DELAY_US
   - Move pnv_pci_ioda_setup_opal_tce_kill() around
   - Increase PE# capacity
   - Allocate PE# in reverse order
   - Create PEs in pcibios_setup_bridge()
   - Setup PE for root bus
   - Extend PCI bridge resources
   - Make pnv_ioda_deconfigure_pe() visible
   - Dynamically release PE
   - Update bridge windows on PCI plug
   - Delay populating pdn
   - Support PCI slot ID
   - Use PCI slot reset infrastructure
   - Introduce pnv_pci_get_slot_id()
   - Functions to get/set PCI slot state
   - PCI/hotplug: PowerPC PowerNV PCI hotplug driver
   - Print correct PHB type names

  Power9 idle support from Shreyas B. Prabhu:
   - set power_save func after the idle states are initialized
   - Use PNV_THREAD_WINKLE macro while requesting for winkle
   - make hypervisor state restore a function
   - Rename idle_power7.S to idle_book3s.S
   - Rename reusable idle functions to hardware agnostic names
   - Make pnv_powersave_common more generic
   - abstraction for saving SPRs before entering deep idle states
   - Add platform support for stop instruction
   - cpuidle/powernv: Use CPUIDLE_STATE_MAX instead of MAX_POWERNV_IDLE_STATES
   - cpuidle/powernv: cleanup cpuidle-powernv.c
   - cpuidle/powernv: Add support for POWER ISA v3 idle states
   - Use deepest stop state when cpu is offlined

  Power9 PMU from Madhavan Srinivasan:
   - factor out power8 pmu macros and defines
   - factor out power8 pmu functions
   - factor out power8 __init_pmu code
   - Add power9 event list macros for generic and cache events
   - Power9 PMU support
   - Export Power9 generic and cache events to sysfs

  Power9 preliminary interrupt & PCI support from Benjamin Herrenschmidt:
   - Add XICS emulation APIs
   - Move a few exception common handlers to make room
   - Add support for HV virtualization interrupts
   - Add mechanism to force a replay of interrupts
   - Add ICP OPAL backend
   - Discover IODA3 PHBs
   - pci: Remove obsolete SW invalidate
   - opal: Add real mode call wrappers
   - Rename TCE invalidation calls
   - Remove SWINV constants and obsolete TCE code
   - Rework accessing the TCE invalidate register
   - Fallback to OPAL for TCE invalidations
   - Use the device-tree to get available range of M64's
   - Check status of a PHB before using it
   - pci: Don't try to allocate resources that will be reassigned

  Other Power9:
   - Send SIGBUS on unaligned copy and paste from Chris Smart
   - Large Decrementer support from Oliver O'Halloran
   - Load Monitor Register Support from Jack Miller

  Performance improvements from Anton Blanchard:
   - Avoid load hit store in __giveup_fpu() and __giveup_altivec()
   - Avoid load hit store in setup_sigcontext()
   - Remove assembly versions of strcpy, strcat, strlen and strcmp
   - Align hot loops of some string functions

  eBPF JIT from Naveen N. Rao:
   - Fix/enhance 32-bit Load Immediate implementation
   - Optimize 64-bit Immediate loads
   - Introduce rotate immediate instructions
   - A few cleanups
   - Isolate classic BPF JIT specifics into a separate header
   - Implement JIT compiler for extended BPF

  Operator Panel driver from Suraj Jitindar Singh:
   - devicetree/bindings: Add binding for operator panel on FSP machines
   - Add inline function to get rc from an ASYNC_COMP opal_msg
   - Add driver for operator panel on FSP machines

  Sparse fixes from Daniel Axtens:
   - make some things static
   - Introduce asm-prototypes.h
   - Include headers containing prototypes
   - Use #ifdef __BIG_ENDIAN__ #else for REG_BYTE
   - kvm: Clarify __user annotations
   - Pass endianness to sparse
   - Make ppc_md.{halt, restart} __noreturn

  MM fixes & cleanups from Aneesh Kumar K.V:
   - radix: Update LPCR HR bit as per ISA
   - use _raw variant of page table accessors
   - Compile out radix related functions if RADIX_MMU is disabled
   - Clear top 16 bits of va only on older cpus
   - Print formation regarding the the MMU mode
   - hash: Update SDR1 size encoding as documented in ISA 3.0
   - radix: Update PID switch sequence
   - radix: Update machine call back to support new HCALL.
   - radix: Add LPID based tlb flush helpers
   - radix: Add a kernel command line to disable radix
   - Cleanup LPCR defines

  Boot code consolidation from Benjamin Herrenschmidt:
   - Move epapr_paravirt_early_init() to early_init_devtree()
   - cell: Don't use flat device-tree after boot
   - ge_imp3a: Don't use the flat device-tree after boot
   - mpc85xx_ds: Don't use the flat device-tree after boot
   - mpc85xx_rdb: Don't use the flat device-tree after boot
   - Don't test for machine type in rtas_initialize()
   - Don't test for machine type in smp_setup_cpu_maps()
   - dt: Add of_device_compatible_match()
   - Factor do_feature_fixup calls
   - Move 64-bit feature fixup earlier
   - Move 64-bit memory reserves to setup_arch()
   - Use a cachable DART
   - Move FW feature probing out of pseries probe()
   - Put exception configuration in a common place
   - Remove early allocation of the SMU command buffer
   - Move MMU backend selection out of platform code
   - pasemi: Remove IOBMAP allocation from platform probe()
   - mm/hash: Don't use machine_is() early during boot
   - Don't test for machine type to detect HEA special case
   - pmac: Remove spurrious machine type test
   - Move hash table ops to a separate structure
   - Ensure that ppc_md is empty before probing for machine type
   - Move 64-bit probe_machine() to later in the boot process
   - Move 32-bit probe() machine to later in the boot process
   - Get rid of ppc_md.init_early()
   - Move the boot time info banner to a separate function
   - Move setting of {i,d}cache_bsize to initialize_cache_info()
   - Move the content of setup_system() to setup_arch()
   - Move cache info inits to a separate function
   - Re-order the call to smp_setup_cpu_maps()
   - Re-order setup_panic()
   - Make a few boot functions __init
   - Merge 32-bit and 64-bit setup_arch()

  Other new features:
   - tty/hvc: Use IRQF_SHARED for OPAL hvc consoles from Sam Mendoza-Jonas
   - tty/hvc: Use opal irqchip interface if available from Sam Mendoza-Jonas
   - powerpc: Add module autoloading based on CPU features from Alastair D'Silva
   - crypto: vmx - Convert to CPU feature based module autoloading from Alastair D'Silva
   - Wake up kopald polling thread before waiting for events from Benjamin Herrenschmidt
   - xmon: Dump ISA 2.06 SPRs from Michael Ellerman
   - xmon: Dump ISA 2.07 SPRs from Michael Ellerman
   - Add a parameter to disable 1TB segs from Oliver O'Halloran
   - powerpc/boot: Add OPAL console to epapr wrappers from Oliver O'Halloran
   - Assign fixed PHB number based on device-tree properties from Guilherme G. Piccoli
   - pseries: Add pseries hotplug workqueue from John Allen
   - pseries: Add support for hotplug interrupt source from John Allen
   - pseries: Use kernel hotplug queue for PowerVM hotplug events from John Allen
   - pseries: Move property cloning into its own routine from Nathan Fontenot
   - pseries: Dynamic add entires to associativity lookup array from Nathan Fontenot
   - pseries: Auto-online hotplugged memory from Nathan Fontenot
   - pseries: Remove call to memblock_add() from Nathan Fontenot

  cxl:
   - Add set and get private data to context struct from Michael Neuling
   - make base more explicitly non-modular from Paul Gortmaker
   - Use for_each_compatible_node() macro from Wei Yongjun
   - Frederic Barrat
   - Abstract the differences between the PSL and XSL
   - Make vPHB device node match adapter's
   - Philippe Bergheaud
   - Add mechanism for delivering AFU driver specific events
   - Ignore CAPI adapters misplaced in switched slots
   - Refine slice error debug messages
   - Andrew Donnellan
   - static-ify variables to fix sparse warnings
   - PCI/hotplug: pnv_php: export symbols and move struct types needed by cxl
   - PCI/hotplug: pnv_php: handle OPAL_PCI_SLOT_OFFLINE power state
   - Add cxl_check_and_switch_mode() API to switch bi-modal cards
   - remove dead Kconfig options
   - fix potential NULL dereference in free_adapter()
   - Ian Munsie
   - Update process element after allocating interrupts
   - Add support for CAPP DMA mode
   - Fix allowing bogus AFU descriptors with 0 maximum processes
   - Fix allocating a minimum of 2 pages for the SPA
   - Fix bug where AFU disable operation had no effect
   - Workaround XSL bug that does not clear the RA bit after a reset
   - Fix NULL pointer dereference on kernel contexts with no AFU interrupts
   - powerpc/powernv: Split cxl code out into a separate file
   - Add cxl_slot_is_supported API
   - Enable bus mastering for devices using CAPP DMA mode
   - Move cxl_afu_get / cxl_afu_put to base
   - Allow a default context to be associated with an external pci_dev
   - Do not create vPHB if there are no AFU configuration records
   - powerpc/powernv: Add support for the cxl kernel api on the real phb
   - Add support for using the kernel API with a real PHB
   - Add kernel APIs to get & set the max irqs per context
   - Add preliminary workaround for CX4 interrupt limitation
   - Add support for interrupts on the Mellanox CX4
   - Workaround PE=0 hardware limitation in Mellanox CX4
   - powerpc/powernv: Fix pci-cxl.c build when CONFIG_MODULES=n

  selftests:
   - Test unaligned copy and paste from Chris Smart
   - Load Monitor Register Tests from Jack Miller
   - Cyril Bur
   - exec() with suspended transaction
   - Use signed long to read perf_event_paranoid
   - Fix usage message in context_switch
   - Fix generation of vector instructions/types in context_switch
   - Michael Ellerman
   - Use "Delta" rather than "Error" in normal output
   - Import Anton's mmap & futex micro benchmarks
   - Add a test for PROT_SAO"

* tag 'powerpc-4.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (263 commits)
  powerpc/mm: Parenthesise IS_ENABLED() in if condition
  tty/hvc: Use opal irqchip interface if available
  tty/hvc: Use IRQF_SHARED for OPAL hvc consoles
  selftests/powerpc: exec() with suspended transaction
  powerpc: Improve comment explaining why we modify VRSAVE
  powerpc/mm: Drop unused externs for hpte_init_beat[_v3]()
  powerpc/mm: Rename hpte_init_lpar() and move the fallback to a header
  powerpc/mm: Fix build break when PPC_NATIVE=n
  crypto: vmx - Convert to CPU feature based module autoloading
  powerpc: Add module autoloading based on CPU features
  powerpc/powernv/ioda: Fix endianness when reading TCEs
  powerpc/mm: Add memory barrier in __hugepte_alloc()
  powerpc/modules: Never restore r2 for a mprofile-kernel style mcount() call
  powerpc/ftrace: Separate the heuristics for checking call sites
  powerpc: Merge 32-bit and 64-bit setup_arch()
  powerpc/64: Make a few boot functions __init
  powerpc: Re-order setup_panic()
  powerpc: Re-order the call to smp_setup_cpu_maps()
  powerpc/32: Move cache info inits to a separate function
  powerpc/64: Move the content of setup_system() to setup_arch()
  ...
 2016-07-30 21:01:36 -07:00
Benjamin Herrenschmidt b9c13fe32f dt: Add of_device_compatible_match() 
This provides an equivalent of of_fdt_match() for non-flat trees.

This is more practical than matching an array of of_device_id structs
when converting a bunch of existing users of of_fdt_match().

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
 2016-07-20 14:29:56 +10:00
Rob Herring 606ad42aa3 of: use pr_fmt prefix for all console printing 
Clean-up all the DT printk functions to use common pr_fmt prefix.

Some print statements such as kmalloc errors were redundant, so just
drop those.

Cc: Frank Rowand <frowand.list@gmail.com>
Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Reviewed-by: Frank Rowand <frank.rowand@am.sony.com>
Signed-off-by: Rob Herring <robh@kernel.org>
 2016-07-18 16:57:42 -05:00
Frank Rowand d9fc880723 of: fix memory leak related to safe_name() 
Fix a memory leak resulting from memory allocation in safe_name().
This patch fixes all call sites of safe_name().

Mathieu Malaterre reported the memory leak on boot:

On my PowerMac device-tree would generate a duplicate name:

[    0.023043] device-tree: Duplicate name in PowerPC,G4@0, renamed to "l2-cache#1"

in this case a newly allocated name is generated by `safe_name`. However
in this case it is never deallocated.

The bug was found using kmemleak reported as:

unreferenced object 0xdf532e60 (size 32):
  comm "swapper", pid 1, jiffies 4294892300 (age 1993.532s)
  hex dump (first 32 bytes):
    6c 32 2d 63 61 63 68 65 23 31 00 dd e4 dd 1e c2  l2-cache#1......
    ec d4 ba ce 04 ec cc de 8e 85 e9 ca c4 ec cc 9e  ................
  backtrace:
    [<c02d3350>] kvasprintf+0x64/0xc8
    [<c02d3400>] kasprintf+0x4c/0x5c
    [<c0453814>] safe_name.isra.1+0x80/0xc4
    [<c04545d8>] __of_attach_node_sysfs+0x6c/0x11c
    [<c075f21c>] of_core_init+0x8c/0xf8
    [<c0729594>] kernel_init_freeable+0xd4/0x208
    [<c00047e8>] kernel_init+0x24/0x11c
    [<c00158ec>] ret_from_kernel_thread+0x5c/0x64

Link: https://bugzilla.kernel.org/show_bug.cgi?id=120331

Signed-off-by: Frank Rowand <frank.rowand@am.sony.com>
Reported-by: mathieu.malaterre@gmail.com
Tested-by: Mathieu Malaterre <mathieu.malaterre@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
 2016-06-24 15:16:10 -05:00
Linus Torvalds e7f44b65b5 Devicetree for 4.7: 
- Rewrite of the unflattening code to avoid recursion and lessen the
   stack usage.
 
 - Rewrite of the phandle args parsing code to get rid of the fixed args
   size. This is needed for IOMMU code.
 
 - Sync to latest dtc which adds more dts style checking. These warnings
   are enabled with "W=1" compiles.
 
 - Tegra documentation updates related to the above warnings.
 
 - A bunch of spelling and other doc fixes.
 
 - Various vendor prefix additions.
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Merge tag 'devicetree-for-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull devicetree updates from Rob Herring:

 - Rewrite of the unflattening code to avoid recursion and lessen the
   stack usage.

 - Rewrite of the phandle args parsing code to get rid of the fixed args
   size.  This is needed for IOMMU code.

 - Sync to latest dtc which adds more dts style checking.  These
   warnings are enabled with "W=1" compiles.

 - Tegra documentation updates related to the above warnings.

 - A bunch of spelling and other doc fixes.

 - Various vendor prefix additions.

* tag 'devicetree-for-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (52 commits)
  devicetree: Add Creative Technology vendor id
  gpio: dt-bindings: add ibm,ppc4xx-gpio binding
  of/unittest: Remove unnecessary module.h header inclusion
  drivers/of: Fix build warning in populate_node()
  drivers/of: Fix depth when unflattening devicetree
  of: dynamic: changeset prop-update revert fix
  drivers/of: Export of_detach_node()
  drivers/of: Return allocated memory from of_fdt_unflatten_tree()
  drivers/of: Specify parent node in of_fdt_unflatten_tree()
  drivers/of: Rename unflatten_dt_node()
  drivers/of: Avoid recursively calling unflatten_dt_node()
  drivers/of: Split unflatten_dt_node()
  of: include errno.h in of_graph.h
  of: document refcount incrementation of of_get_cpu_node()
  Documentation: dt: soc: fix spelling mistakes
  Documentation: dt: power: fix spelling mistake
  Documentation: dt: pinctrl: fix spelling mistake
  Documentation: dt: opp: fix spelling mistake
  Documentation: dt: net: fix spelling mistakes
  Documentation: dt: mtd: fix spelling mistake
  ...
 2016-05-20 14:51:34 -07:00
Suraj Jitindar Singh 201b3fe586 drivers/of: Add check for null property in of_remove_property() 
The validity of the property input argument to of_remove_property() is
never checked within the function and thus it is possible to pass a null
value. It happens that this will be picked up in __of_remove_property()
as no matching property of the device node will be found and thus an
error will be returned, however once again there is no explicit check
for a null value. By the time this is detected 2 locks have already been
acquired which is completely unnecessary if the property to remove is
null.

Add an explicit check in the function of_remove_property() for a null
property value and return -ENODEV in this case, this is consistent with
what the previous return value would have been when the null value was
not detected and passed to __of_remove_property().

By moving an explicit check for the property paramenter into the
of_remove_property() function, this will remove the need to perform this
check in calling code before invocation of the of_remove_property()
function.

Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
 2016-05-11 21:54:03 +10:00
Masahiro Yamada 1c986e3643 of: document refcount incrementation of of_get_cpu_node() 
This function increments refcount.  This is worth noting.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Frank Rowand <frank.rowand@am.sony.com>
Signed-off-by: Rob Herring <robh@kernel.org>
 2016-04-25 10:06:39 -05:00
Joerg Roedel abdaa77b18 of: Introduce of_phandle_iterator_args() 
This helper function can be used to copy the arguments of a
phandle to an array.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Rob Herring <robh@kernel.org>
 2016-04-19 17:25:15 -05:00
Joerg Roedel f623ce95a5 of: Introduce of_for_each_phandle() helper macro 
With this macro any user can easily iterate over a list of
phandles. The patch also converts __of_parse_phandle_with_args()
to make use of the macro.

The of_count_phandle_with_args() function is not converted,
because the macro hides the return value of of_phandle_iterator_init(),
which is needed in there.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Rob Herring <robh@kernel.org>
 2016-04-19 17:25:14 -05:00
Joerg Roedel 2021bd01ff of: Remove counting special case from __of_parse_phandle_with_args() 
The index = -1 case in __of_parse_phandle_with_args() is
used to just return the number of phandles. That special
case needs extra handling, so move it to the place where it
is needed: of_count_phandle_with_args().

This allows to further simplify __of_parse_phandle_with_args()
later on.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Rob Herring <robh@kernel.org>
 2016-04-19 17:25:14 -05:00
Joerg Roedel cd209b412c of: Move phandle walking to of_phandle_iterator_next() 
Move the code to walk over the phandles out of the loop in
__of_parse_phandle_with_args() to a separate function that
just works with the iterator handle: of_phandle_iterator_next().

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Rob Herring <robh@kernel.org>
 2016-04-19 17:25:13 -05:00
Joerg Roedel 74e1fbb137 of: Introduce struct of_phandle_iterator 
This struct carrys all necessary information to iterate over
a list of phandles and extract the arguments. Add an
init-function for the iterator and make use of it in
__of_parse_phandle_with_args().

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Rob Herring <robh@kernel.org>
 2016-04-19 17:25:13 -05:00
David Rivshin fe99c707fc of: add 'const' for of_property_*_string*() parameter '*np' 
The of_property_{read,count,match}_string* family of functions never
modify the struct device_node pointer that is passed in, so there is no
reason for it to be non-const. Equivalent functions for all other types
already take a 'const struct device_node *np'.

Signed-off-by: David Rivshin <drivshin@allworx.com>
Signed-off-by: Rob Herring <robh@kernel.org>
 2016-03-03 16:51:43 -06:00
Masahiro Yamada 510bd068db of: simplify arch_find_n_match_cpu_physical_id() function 
This commit does not change the function behavior.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Rob Herring <robh@kernel.org>
 2015-10-30 13:04:19 -05:00
Linus Torvalds 4da3064d17 Devicetree changes for v4.2 
A whole lot of bug fixes. Nothing stands out here except the ability to
 enable CONFIG_OF on every architecture, and an import of a newer version
 of dtc.
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Merge tag 'devicetree-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux

Pull devicetree updates from Grant Likely:
 "A whole lot of bug fixes.

  Nothing stands out here except the ability to enable CONFIG_OF on
  every architecture, and an import of a newer version of dtc"

* tag 'devicetree-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux: (22 commits)
  of/irq: Rename "intc_desc" to "of_intc_desc" to fix OF on sh
  of/irq: Fix pSeries boot failure
  Documentation: DT: Fix a typo in the filename "lantiq,<chip>-pinumx.txt"
  of: define of_find_node_by_phandle for !CONFIG_OF
  of/address: use atomic allocation in pci_register_io_range()
  of: Add vendor prefix for Zodiac Inflight Innovations
  dt/fdt: add empty versions of early_init_dt_*_memory_arch
  of: clean-up unnecessary libfdt include paths
  of: make unittest select OF_EARLY_FLATTREE instead of depend on it
  of: make CONFIG_OF user selectable
  MIPS: prepare for user enabling of CONFIG_OF
  of/fdt: fix argument name and add comments of unflatten_dt_node()
  of: return NUMA_NO_NODE from fallback of_node_to_nid()
  tps6507x.txt: Remove executable permission
  of/overlay: Grammar s/an negative/a negative/
  of/fdt: Make fdt blob input parameters of unflatten functions const
  of: add helper function to retrive match data
  of: Grammar s/property exist/property exists/
  of: Move OF flags to be visible even when !CONFIG_OF
  scripts/dtc: Update to upstream version 9d3649bd3be245c9
  ...
 2015-07-01 19:40:18 -07:00
Linus Torvalds 099bfbfc7f Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 
Pull drm updates from Dave Airlie:
 "This is the main drm pull request for v4.2.

  I've one other new driver from freescale on my radar, it's been posted
  and reviewed, I'd just like to get someone to give it a last look, so
  maybe I'll send it or maybe I'll leave it.

  There is no major nouveau changes in here, Ben was working on
  something big, and we agreed it was a bit late, there wasn't anything
  else he considered urgent to merge.

  There might be another msm pull for some bits that are waiting on
  arm-soc, I'll see how we time it.

  This touches some "of" stuff, acks are in place except for the fixes
  to the build in various configs,t hat I just applied.

  Summary:

  New drivers:
      - virtio-gpu:
                KMS only pieces of driver for virtio-gpu in qemu.
                This is just the first part of this driver, enough to run
                unaccelerated userspace on. As qemu merges more we'll start
                adding the 3D features for the virgl 3d work.
      - amdgpu:
                a new driver from AMD to driver their newer GPUs. (VI+)
                It contains a new cleaner userspace API, and is a clean
                break from radeon moving forward, that AMD are going to
                concentrate on. It also contains a set of register headers
                auto generated from AMD internal database.

  core:
      - atomic modesetting API completed, enabled by default now.
      - Add support for mode_id blob to atomic ioctl to complete interface.
      - bunch of Displayport MST fixes
      - lots of misc fixes.

  panel:
      - new simple panels
      - fix some long-standing build issues with bridge drivers

  radeon:
      - VCE1 support
      - add a GPU reset counter for userspace
      - lots of fixes.

  amdkfd:
      - H/W debugger support module
      - static user-mode queues
      - support killing all the waves when a process terminates
      - use standard DECLARE_BITMAP

  i915:
      - Add Broxton support
      - S3, rotation support for Skylake
      - RPS booting tuning
      - CPT modeset sequence fixes
      - ns2501 dither support
      - enable cmd parser on haswell
      - cdclk handling fixes
      - gen8 dynamic pte allocation
      - lots of atomic conversion work

  exynos:
      - Add atomic modesetting support
      - Add iommu support
      - Consolidate drm driver initialization
      - and MIC, DECON and MIPI-DSI support for exynos5433

  omapdrm:
      - atomic modesetting support (fixes lots of things in rewrite)

  tegra:
      - DP aux transaction fixes
      - iommu support fix

  msm:
      - adreno a306 support
      - various dsi bits
      - various 64-bit fixes
      - NV12MT support

  rcar-du:
      - atomic and misc fixes

  sti:
      - fix HDMI timing complaince

  tilcdc:
      - use drm component API to access tda998x driver
      - fix module unloading

  qxl:
      - stability fixes"

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (872 commits)
  drm/nouveau: Pause between setting gpu to D3hot and cutting the power
  drm/dp/mst: close deadlock in connector destruction.
  drm: Always enable atomic API
  drm/vgem: Set unique to "vgem"
  of: fix a build error to of_graph_get_endpoint_by_regs function
  drm/dp/mst: take lock around looking up the branch device on hpd irq
  drm/dp/mst: make sure mst_primary mstb is valid in work function
  of: add EXPORT_SYMBOL for of_graph_get_endpoint_by_regs
  ARM: dts: rename the clock of MIPI DSI 'pll_clk' to 'sclk_mipi'
  drm/atomic: Don't set crtc_state->enable manually
  drm/exynos: dsi: do not set TE GPIO direction by input
  drm/exynos: dsi: add support for MIC driver as a bridge
  drm/exynos: dsi: add support for Exynos5433
  drm/exynos: dsi: make use of array for clock access
  drm/exynos: dsi: make use of driver data for static values
  drm/exynos: dsi: add macros for register access
  drm/exynos: dsi: rename pll_clk to sclk_clk
  drm/exynos: mic: add MIC driver
  of: add helper for getting endpoint node of specific identifiers
  drm/exynos: add Exynos5433 decon driver
  ...
 2015-06-26 13:18:51 -07:00
Dave Airlie 8ffaa90347 of: add EXPORT_SYMBOL for of_graph_get_endpoint_by_regs 
This symbol came via exynos-next, but modular builds are broken
so just fix it up now.

Signed-off-by: Dave Airlie <airlied@redhat.com>
 2015-06-23 10:19:10 +10:00
Hyungwon Hwang 8ccd0d0ca0 of: add helper for getting endpoint node of specific identifiers 
When there are multiple ports or multiple endpoints in a port, they have to be
distinguished by the value of reg property. It is common. The drivers can get
the specific endpoint in the specific port via this function. Now the drivers
have to implement this code in themselves or have to force the order of dt nodes
to get the right node.

Signed-off-by: Hyungwon Hwang <human.hwang@samsung.com>
Acked-by: Rob Herring <robh+dt@kernel.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
 2015-06-22 19:56:51 +09:00
Konstantin Khlebnikov c8fff7bc5b of: return NUMA_NO_NODE from fallback of_node_to_nid() 
Node 0 might be offline as well as any other numa node,
in this case kernel cannot handle memory allocation and crashes.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Fixes: 0c3f061c19 ("of: implement of_node_to_nid as a weak function")
Signed-off-by: Grant Likely <grant.likely@linaro.org>
 2015-06-04 14:39:52 +09:00
Sudeep Holla 194ec9368c drivers: of/base: move of_init to driver_init 
Commit 5590f3196b ("drivers/core/of: Add symlink to device-tree from
devices with an OF node") adds the symlink `of_node` for each device
pointing to it's device tree node while creating/initialising it.

However the devicetree sysfs is created and setup in of_init which is
executed at core_initcall level. For all the devices created before
of_init, the following error is thrown:
	"Error -2(-ENOENT) creating of_node link"

Like many other components in driver model, initialize the sysfs support
for OF/devicetree from driver_init so that it's ready before any devices
are created.

Fixes: 5590f3196b ("drivers/core/of: Add symlink to device-tree from
	devices with an OF node")
Suggested-by: Rob Herring <robh+dt@kernel.org>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Tested-by: Robert Schwebel <r.schwebel@pengutronix.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-05-26 19:55:56 -07:00
Linus Torvalds d56a669ca5 Devicetree updates for 4.1: 
- DT endianness specification bindings
 - Big endian 8250 serial support
 - DT overlay unittest updates
 - Various DT doc updates
 - Compile fixes for OF_IRQ=n
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Merge tag 'devicetree-for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull second batch of devicetree updates from Rob Herring:
 "As Grant mentioned in the first devicetree pull request, here is the
  2nd batch of DT changes for 4.1.  The main remaining item here is the
  endianness bindings and related 8250 driver support.

   - DT endianness specification bindings

   - big-endian 8250 serial support

   - DT overlay unittest updates

   - various DT doc updates

   - compile fixes for OF_IRQ=n"

* tag 'devicetree-for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  frv: add io{read,write}{16,32}be functions
  mn10300: add io{read,write}{16,32}be functions
  Documentation: DT bindings: add doc for Altera's SoCFPGA platform
  of: base: improve of_get_next_child() kernel-doc
  Doc: dt: arch_timer: discourage clock-frequency use
  of: unittest: overlay: Keep track of created overlays
  of/fdt: fix allocation size for device node path
  serial: of_serial: Support big-endian register accesses
  serial: 8250: Add support for big-endian MMIO accesses
  of: Document {little,big,native}-endian bindings
  of/fdt: Add endianness helper function for early init code
  of: Add helper function to check MMIO register endianness
  of/fdt: Remove "reg" data prints from early_init_dt_scan_memory
  of: add vendor prefix for Artesyn
  of: Add dummy of_irq_to_resource_table() for IRQ_OF=n
  of: OF_IRQ should depend on IRQ_DOMAIN
 2015-04-24 08:46:18 -07:00
Linus Torvalds 7505256626 Devicetree changes for v4.1 
devicetree changes queued up for v4.1. Here are the highlights:
 - Lots of unittest cleanup from Frank Rowand
 - Bugfixes and updates to the of_graph code
 - Tighten up of_get_mac_address() code
 - Documentation updates
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Merge tag 'devicetree-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux

Pull devicetree changes from Grant Likely:
 "Here are the devicetree changes queued up for v4.1.  Nothing really
  exciting here.  Rob has another few commits for big-endian attached
  UARTs, but those will be sent in a separate merge request since they
  haven't been as thoroughly tested as this batch.

  Here are the highlights:

   - lots of unittest cleanup from Frank Rowand

   - bugfixes and updates to the of_graph code

   - tighten up of_get_mac_address() code

   - documentation updates"

* tag 'devicetree-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux:
  of/unittest: Fix of_platform_depopulate test case
  of/unittest: early return from test skips tests
  of/unittest: breadcrumbs to reduce pain of future maintainers
  of/unittest: reduce checkpatch noise - line after declarations
  of/unittest: typo in error string
  of/unittest: add const where needed
  of_net: factor out repetitive code from of_get_mac_address()
  drivers/of: Add empty ranges quirk for PA-Semi
  of: Allow selection of OF_DYNAMIC and OF_OVERLAY if OF_UNITTEST
  of: Empty node & property flag accessors when !OF
  of: Explicitly include linux/types.h in of_graph.h
  dt-bindings: brcm: rationalize Broadcom documentation naming
  of/unittest: replace 'selftest' with 'unittest'
  Documentation: rename of_selftest.txt to of_unittest.txt
  Documentation: update the of_selftest.txt
  dt: OF_UNITTEST make dependency broken
  MAINTAINERS: Pantelis Antoniou device tree overlay maintainer
  of: Add of_graph_get_port_by_id function
  of: Add for_each_endpoint_of_node helper macro
  of: Decrement refcount of previous endpoint in of_graph_get_next_endpoint
 2015-04-18 08:30:10 -04:00
Baruch Siach 6480827357 of: base: improve of_get_next_child() kernel-doc 
Add two new facts to of_get_next_child() documentation:

   * of_get_next_child() returns NULL when there is not next child

   * of_get_next_child() decrements the refcount of prev

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Rob Herring <robh@kernel.org>
 2015-04-17 07:49:28 -05:00
Linus Torvalds c3a416a669 Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 
Pull i2c updates from Wolfram Sang:
 "Most notable:

   - introducing the i2c_quirk infrastructure.  Now, flaws of I2C
     controllers can be described and the core will check if the flaws
     collide with the messages to be sent

   - wait_for_completion return type cleanup series

   - new drivers for Digicolor, Netlogic XLP, Ingenic JZ4780

   - updates to the I2C slave framework which include API changes.  Its
     only user was updated, too.  Documentation was finally added

   - changed dynamic bus numbering for the DT case.  This could change
     bus numbers for users.  However, it fixes a collision where dynamic
     and static busses request the same id.

   - driver bugfixes, cleanups"

* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (52 commits)
  i2c: xlp9xx: Driver for Netlogic XLP9XX/5XX I2C controller
  of: Add vendor prefix 'netlogic'
  i2c: davinci: use ICPFUNC to toggle I2C as gpio for bus recovery
  i2c: davinci: use bus recovery infrastructure
  i2c: change input parameter to i2c_adapter for prepare/unprepare_recovery
  i2c: i2c-mux-gpio: remove error messages for probe deferrals
  i2c: jz4780: Add i2c bus controller driver for Ingenic JZ4780
  i2c: dln2: set the device tree node of the adapter
  i2c: davinci: fixup wait_for_completion_timeout handling
  i2c: mpc: Fix ISR return value
  i2c: slave-eeprom: add more info when to increase the pointer
  i2c: slave: add documentation for i2c-slave-eeprom
  Documentation: i2c: describe the new slave mode
  i2c: slave: rework the slave API
  i2c: add support for the Digicolor I2C controller
  i2c: busses with dynamic ids should start after fixed ids for DT
  of: base: add function to get highest id of an alias stem
  i2c: designware: Suppress error message if platform_get_irq() < 0
  i2c: mpc: assign the correct prescaler from SVR
  i2c: img-scb: fixup of wait_for_completion_timeout return handling
  ...
 2015-04-14 18:10:45 -07:00
Kevin Cernekee 37786c7fee of: Add helper function to check MMIO register endianness 
SoC peripherals can come in several different flavors:

 - little-endian: registers always need to be accessed in LE mode (so the
   kernel should perform a swap if the CPU is running BE)

 - big-endian: registers always need to be accessed in BE mode (so the
   kernel should perform a swap if the CPU is running LE)

 - native-endian: the bus will automatically swap accesses, so the kernel
   should never swap

Introduce a function that checks an OF device node to see whether it
contains a "big-endian" or "native-endian" property.  For the former case,
always return true.  For the latter case, return true iff the kernel was
built for BE (implying that the BE MMIO accessors do not perform a swap).
Otherwise return false, assuming LE registers.

LE registers are assumed by default because most existing drivers (libahci,
serial8250, usb) always use readl/writel in the absence of instructions
to the contrary, so that will be our fallback.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Rob Herring <robh@kernel.org>
 2015-04-14 19:35:44 -05:00
Rob Herring 8147e2e8f1 of: Add of-graph helpers to loop over endpoints and find ports by id 
This series converts of_graph_get_next_endpoint to decrement the refcount of
 the passed prev parameter. This allows to add a for_each_endpoint_of_node
 helper macro to loop over all endpoints in a device tree node.
 The of_graph_get_port_by_id function is added to retrieve a port by its known
 port id (contained in the reg property) from the device tree.
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Merge tag 'of-graph-for-4.0' of git://git.pengutronix.de/git/pza/linux into for-next

Pull of-graph helpers from Philipp Zabel:
of: Add of-graph helpers to loop over endpoints and find ports by id

This series converts of_graph_get_next_endpoint to decrement the refcount of
the passed prev parameter. This allows to add a for_each_endpoint_of_node
helper macro to loop over all endpoints in a device tree node.
The of_graph_get_port_by_id function is added to retrieve a port by its known
port id (contained in the reg property) from the device tree.
 2015-03-25 00:41:08 -05:00
Peter Hurley f64255b507 Revert "of: Fix premature bootconsole disable with 'stdout-path'" 
This reverts commit 2fa645cb27.

The assumption that at least 1 preferred console will be registered
when the stdout-path property is set is invalid, which can result
in _no_ consoles.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Rob Herring <robh@kernel.org>
 2015-03-19 08:46:54 -05:00
Brian Norris 721a09e95c of: handle both '/' and ':' in path strings 
Commit 106937e8cc ("of: fix handling of '/' in options for
of_find_node_by_path()") caused a regression in OF handling of
stdout-path. While it fixes some cases which have '/' after the ':', it
breaks cases where there is more than one '/' *before* the ':'.

For example, it breaks this boot string

  stdout-path = "/rdb/serial@f040ab00:115200";

So rather than doing sequentialized checks (first for '/', then for ':';
or vice versa), to get the correct behavior we need to check for the
first occurrence of either one of them.

It so happens that the handy strcspn() helper can do just that.

Fixes: 106937e8cc ("of: fix handling of '/' in options for of_find_node_by_path()")
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: stable@vger.kernel.org # 3.19
Acked-by: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
 2015-03-19 08:42:43 -05:00
Wolfram Sang 351d224f64 of: base: add function to get highest id of an alias stem 
I2C supports adding adapters using either a dynamic or fixed id. The
latter is provided by aliases in the DT case. To prevent id collisions
of those two types, install this function which gives us the highest
fixed id, so we can then let the dynamically created ones come after
this highest number.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
 2015-03-18 13:36:46 +01:00
Leif Lindholm 106937e8cc of: fix handling of '/' in options for of_find_node_by_path() 
Ensure proper handling of paths with appended options (after ':'),
where those options may contain a '/'.

Fixes: 7914a7c565 ("of: support passing console options with stdout-path")
Reported-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Cc: <stable@vger.kernel.org> # 3.19
Signed-off-by: Rob Herring <robh@kernel.org>
 2015-03-10 10:34:35 -05:00
Peter Hurley 2fa645cb27 of: Fix premature bootconsole disable with 'stdout-path' 
Support for devicetree serial consoles via 'stdout-path' causes
bootconsoles to be disabled when the vt dummy console loads, since
there is no preferred console (the preferred console is not added
until the device is probed).

Ensure there is at least a preferred console, even if never matched.

Requires: "console: Fix console name size mismatch"
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Rob Herring <robh@kernel.org>
 2015-03-10 10:27:21 -05:00
Philipp Zabel bfe446e37c of: Add of_graph_get_port_by_id function 
This patch adds a function to get a port device tree node by port id,
or reg property value.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
 2015-02-23 11:42:24 +01:00
Philipp Zabel f033c0bcc5 of: Decrement refcount of previous endpoint in of_graph_get_next_endpoint 
Decrementing the reference count of the previous endpoint node allows to
use the of_graph_get_next_endpoint function in a for_each_... style macro.
All current users of this function that pass a non-NULL prev parameter
(that is, soc_camera and imx-drm) are changed to not decrement the passed
prev argument's refcount themselves.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
 2015-02-23 11:42:23 +01:00
Sakari Ailus 2d4c0aef0f of: EXPORT_SYMBOL_GPL of_property_read_u64_array 
Make of_property_read_u64_array() available for modules as well. This was
missing from the patch which originally added the function.

Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Rob Herring <robh@kernel.org>
 2015-02-03 20:32:01 -06:00
Linus Torvalds 7ef58b32f5 Devicetree changes for v3.19 
Lots of activity in the devicetree code for v3.18. Most of it is related
 to getting all of the overlay support code in place, but there are other
 important things in there.
 
 There are a few trivial merge conflicts. They shouldn't give you any
 trouble.
 
 Highlights:
 - OF_RECONFIG notifiers for SPI, I2C and Platform devices. Those
   subsystems can now respond to live changes to the device tree.
 - CONFIG_OF_OVERLAY method for applying live changes to the device tree
 - Removal of the of_allnodes list. This used to be used to iterate over
   all the nodes in the device tree, but it is unnecessary because the
   same thing can be done by iterating over the list of child pointers.
   Getting rid of of_allnodes saves some memory and avoids the
   possibility of of_allnodes being sorted differently from the child
   lists.
 - Support for retrieving original DTB blob via sysfs. Needed by kexec.
 - More unittests
 - Documentation and minor bug fixes
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Merge tag 'devicetree-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux

Pull devicetree changes from Grant Likely:
 "Lots of activity in the devicetree code for v3.18.  Most of it is
  related to getting all of the overlay support code in place, but there
  are other important things in there.

  Highlights:

   - OF_RECONFIG notifiers for SPI, I2C and Platform devices.  Those
     subsystems can now respond to live changes to the device tree.

   - CONFIG_OF_OVERLAY method for applying live changes to the device
     tree

   - Removal of the of_allnodes list.  This used to be used to iterate
     over all the nodes in the device tree, but it is unnecessary
     because the same thing can be done by iterating over the list of
     child pointers.  Getting rid of of_allnodes saves some memory and
     avoids the possibility of of_allnodes being sorted differently from
     the child lists.

   - Support for retrieving original DTB blob via sysfs.  Needed by
     kexec.

   - More unittests

   - Documentation and minor bug fixes"

* tag 'devicetree-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux: (42 commits)
  of: Delete unnecessary check before calling "of_node_put()"
  of: Drop ->next pointer from struct device_node
  spi: Check for spi_of_notifier when CONFIG_OF_DYNAMIC=y
  of: support passing console options with stdout-path
  of: add optional options parameter to of_find_node_by_path()
  of: Add bindings for chosen node, stdout-path
  of: Remove unneeded and incorrect MODULE_DEVICE_TABLE
  ARM: dt: fix up PL011 device tree bindings
  of: base, fix of_property_read_string_helper kernel-doc
  of: remove select of non-existant OF_DEVICE config symbol
  spi/of: Add OF notifier handler
  spi/of: Create new device registration method and accessors
  i2c/of: Add OF_RECONFIG notifier handler
  i2c/of: Factor out Devicetree registration code
  of/overlay: Add overlay unittests
  of/overlay: Introduce DT overlay support
  of/reconfig: Add OF_DYNAMIC notifier for platform_bus_type
  of/reconfig: Always use the same structure for notifiers
  of/reconfig: Add debug output for OF_RECONFIG notifiers
  of/reconfig: Add empty stubs for the of_reconfig methods
  ...
 2014-12-11 13:06:58 -08:00
Leif Lindholm 7914a7c565 of: support passing console options with stdout-path 
Support specifying console options (like with console=ttyXN,<options>)
by appending them to the stdout-path property after a separating ':'.

Example:
        stdout-path = "uart0:115200";

Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
[grant.likely: minor rework to shorten the diffstat]
Signed-off-by: Grant Likely <grant.likely@linaro.org>
 2014-12-03 23:12:37 +00:00
Leif Lindholm 75c28c09af of: add optional options parameter to of_find_node_by_path() 
Update of_find_node_by_path():
1) Rename function to of_find_node_opts_by_path(), adding an optional
   pointer argument. Provide a static inline wrapper version of
   of_find_node_by_path() which calls the new function with NULL as
   the optional argument.
2) Ignore any part of the path beyond and including the ':' separator.
3) Set the new provided pointer argument to the beginning of the string
   following the ':' separator.
4: Add tests.

Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
 2014-12-03 23:12:36 +00:00
Jiri Slaby e99010edb3 of: base, fix of_property_read_string_helper kernel-doc 
It referenced of_property_read_string_util whereas the function name
is of_property_read_string_helper.

Introduced in a87fa1d81a (of: Fix
overflow bug in string property parsing functions). Found out when
reviewing the stable 3.12 queue.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
 2014-11-27 17:21:21 +00:00
Kevin Cernekee 53a4ab96c6 of: Change of_device_is_available() to return bool 
This function can only return true or false; using a bool makes it more
obvious to the reader.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
 2014-11-18 17:32:55 +00:00
Kevin Cernekee 25c7a1de6c of: Fix of_device_is_compatible() comment 
This function passes back a value from __of_device_is_compatible(), which
returns a score in the range 0..11, not a bool.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
 2014-11-18 17:32:07 +00:00