This patch changes the byteorder handling for short and panid handling.
We now except to get little endian in nl802154 for these attributes.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch moves the 802.15.4 constraints WPAN_NUM_ defines into
"net/ieee802154.h" which should contain all necessary 802.15.4 related
information. Also rename these defines to a common name which is
IEEE802154_MAX_CHANNEL and IEEE802154_MAX_PAGE.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds support for deleting a wpan interface via nl802154.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds support for setting an extended address while
registration a new interface. If ieee802154_is_valid_extended_addr
getting as parameter and invalid extended address then the perm address
is fallback. This is useful to make some default handling while for
example default registration of a wpan interface while phy registration.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds a new nl802154 command for adding a new interface
according to a wpan phy via nl802154.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Pull ARM SoC fixes from Olof Johansson:
"Another small set of fixes:
- some DT compatible typo fixes
- irq setup fix dealing with irq storms on orion
- i2c quirk generalization for mvebu
- a handful of smaller fixes for OMAP
- a couple of added file patterns for OMAP entries in MAINTAINERS"
* tag 'armsoc-for-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: at91/dt: Fix sama5d3x typos
pinctrl: dra: dt-bindings: Fix output pull up/down
MAINTAINERS: Update entry for omap related .dts files to cover new SoCs
MAINTAINERS: add more files under OMAP SUPPORT
ARM: dts: AM437x-SK-EVM: Fix DCDC3 voltage
ARM: dts: AM437x-GP-EVM: Fix DCDC3 voltage
ARM: dts: AM43x-EPOS-EVM: Fix DCDC3 voltage
ARM: dts: am335x-evm: Fix 5th NAND partition's name
ARM: orion: Fix for certain sequence of request_irq can cause irq storm
ARM: mvebu: armada xp: Generalize use of i2c quirk
Merge "omap fixes against v3.18-rc4" from Tony Lindgren:
Few omap fixes for hangs and wrong pinctrl defines, and update
MAINTAINERS file to avoid missing PMIC and SoC related patches:
- Fix random hangs on am437x because of incorrect default
value for the DDR regulator
- Fix wrong partition name for NAND on am335x-evm
- Fix wrong pinctrl defines for dra7xx
- Update maintainers entries for PMICs and SoCs
* tag 'omap-fixes-against-v3.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
pinctrl: dra: dt-bindings: Fix output pull up/down
MAINTAINERS: Update entry for omap related .dts files to cover new SoCs
MAINTAINERS: add more files under OMAP SUPPORT
ARM: dts: AM437x-SK-EVM: Fix DCDC3 voltage
ARM: dts: AM437x-GP-EVM: Fix DCDC3 voltage
ARM: dts: AM43x-EPOS-EVM: Fix DCDC3 voltage
ARM: dts: am335x-evm: Fix 5th NAND partition's name
Signed-off-by: Olof Johansson <olof@lixom.net>
Use of well known RSS key increases attack surface.
Switch to a random one, using generic helper so that all
ports share a common key.
Also provide ethtool -x support to fetch RSS key
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
RSS (Receive Side Scaling) typically uses Toeplitz hash and a 40 or 52 bytes
RSS key.
Some drivers use a constant (and well known key), some drivers use a random
key per port, making bonding setups hard to tune. Well known keys increase
attack surface, considering that number of queues is usually a power of two.
This patch provides infrastructure to help drivers doing the right thing.
netdev_rss_key_fill() should be used by drivers to initialize their RSS key,
even if they provide ethtool -X support to let user redefine the key later.
A new /proc/sys/net/core/netdev_rss_key file can be used to get the host
RSS key even for drivers not providing ethtool -x support, in case some
applications want to precisely setup flows to match some RX queues.
Tested:
myhost:~# cat /proc/sys/net/core/netdev_rss_key
11:63:99:bb:79:fb:a5:a7:07:45:b2:20:bf:02:42:2d:08:1a:dd:19:2b:6b:23:ac:56:28:9d:70:c3:ac:e8:16:4b:b7:c1:10:53:a4:78:41:36:40:74:b6:15:ca:27:44:aa:b3:4d:72
myhost:~# ethtool -x eth0
RX flow hash indirection table for eth0 with 8 RX ring(s):
0: 0 1 2 3 4 5 6 7
RSS hash key:
11:63:99:bb:79:fb:a5:a7:07:45:b2:20:bf:02:42:2d:08:1a:dd:19:2b:6b:23:ac:56:28:9d:70:c3:ac:e8:16:4b:b7:c1:10:53:a4:78:41
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira Ayuso says:
====================
Netfilter/IPVS fixes for net
The following patchset contains Netfilter updates for your net tree,
they are:
1) Fix missing initialization of the range structure (allocated in the
stack) in nft_masq_{ipv4, ipv6}_eval, from Daniel Borkmann.
2) Make sure the data we receive from userspace contains the req_version
structure, otherwise return an error incomplete on truncated input.
From Dan Carpenter.
3) Fix handling og skb->sk which may cause incorrect handling
of connections from a local process. Via Simon Horman, patch from
Calvin Owens.
4) Fix wrong netns in nft_compat when setting target and match params
structure.
5) Relax chain type validation in nft_compat that was recently included,
this broke the matches that need to be run from the route chain type.
Now iptables-test.py automated regression tests report success again
and we avoid the only possible problematic case, which is the use of
nat targets out of nat chain type.
6) Use match->table to validate the tablename, instead of the match->name.
Again patch for nft_compat.
7) Restore the synchronous release of objects from the commit and abort
path in nf_tables. This is causing two major problems: splats when using
nft_compat, given that matches and targets may sleep and call_rcu is
invoked from softirq context. Moreover Patrick reported possible event
notification reordering when rules refer to anonymous sets.
8) Fix race condition in between packets that are being confirmed by
conntrack and the ctnetlink flush operation. This happens since the
removal of the central spinlock. Thanks to Jesper D. Brouer to looking
into this.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Enable capture of interrupted machine state for each sample.
Registers to sample are passed per event in the sample_regs_intr bitmask.
To sample interrupt machine state, the PERF_SAMPLE_INTR_REGS must be passed in
sample_type.
The list of available registers is arch dependent and provided by asm/perf_regs.h
Registers are laid out as u64 in the order of the bit order of sample_intr_regs.
This patch also adds a new ABI version PERF_ATTR_SIZE_VER4 because we extend
the perf_event_attr struct with a new u64 field.
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: cebbert.lkml@gmail.com
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-api@vger.kernel.org
Link: http://lkml.kernel.org/r/1411559322-16548-2-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
We do not initialize init_task.numa_preferred_nid,
but this value is inherited by userspace "init"
process:
rest_init()->kernel_thread(kernel_init)->do_fork(CLONE_VM);
__sched_fork()
{
if (clone_flags & CLONE_VM)
p->numa_preferred_nid = current->numa_preferred_nid;
else
p->numa_preferred_nid = -1;
}
kernel_init() becomes userspace "init" process.
So, we propagate garbage nid to userspace, and it may be used
during numa balancing.
Currently, we do not have reports about this brings a problem,
but it seem we should set it for sure.
Even if init_task.numa_preferred_nid is zero, we may meet a weird
configuration without nid#0. On sparc64, where processors are
numbered physically, I saw a machine without cpu#1, while cpu#2
existed. Possible, something similar may be with numa nodes.
So, let's initialize it and be sure we're safe.
Signed-off-by: Kirill Tkhai <ktkhai@parallels.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Eric Paris <eparis@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Sergey Dyasly <dserrg@gmail.com>
Link: http://lkml.kernel.org/r/1415699189.15631.6.camel@tkhai
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull power supply updates from Sebastian Reichel:
"Power supply and reset changes for the v3.18-rc:
- misc. charger-manager fixes
- year 2038 fix in ab8500_fg
- fix error handling of bq2415x_charger"
* tag 'for-v3.18-rc' of git://git.infradead.org/battery-2.6:
power: charger-manager: Fix accessing invalidated power supply after charger unbind
power: charger-manager: Fix accessing invalidated power supply after fuel gauge unbind
power: charger-manager: Avoid recursive thermal get_temp call
power_supply: Add no_thermal property to prevent recursive get_temp calls
power: bq2415x_charger: Fix memory leak on DTS parsing error
power: bq2415x_charger: Properly handle ENODEV from power_supply_get_by_phandle
power: ab8500_fg.c: use 64-bit time types
Pull NFS client bugfixes from Trond Myklebust:
"Highlights include:
- stable patches to fix NFSv4.x delegation reclaim error paths
- fix a bug whereby we were advertising NFSv4.1 but using NFSv4.2
features
- fix a use-after-free problem with pNFS block layouts
- fix a memory leak in the pNFS files O_DIRECT code
- replace an intrusive and Oops-prone performance fix in the NFSv4
atomic open code with a safer one-line version and revert the two
original patches"
* tag 'nfs-for-3.18-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
sunrpc: fix sleeping under rcu_read_lock in gss_stringify_acceptor
NFS: Don't try to reclaim delegation open state if recovery failed
NFSv4: Ensure that we call FREE_STATEID when NFSv4.x stateids are revoked
NFSv4: Fix races between nfs_remove_bad_delegation() and delegation return
NFSv4.1: nfs41_clear_delegation_stateid shouldn't trust NFS_DELEGATED_STATE
NFSv4: Ensure that we remove NFSv4.0 delegations when state has expired
NFS: SEEK is an NFS v4.2 feature
nfs: Fix use of uninitialized variable in nfs_getattr()
nfs: Remove bogus assignment
nfs: remove spurious WARN_ON_ONCE in write path
pnfs/blocklayout: serialize GETDEVICEINFO calls
nfs: fix pnfs direct write memory leak
Revert "NFS: nfs4_do_open should add negative results to the dcache."
Revert "NFS: remove BUG possibility in nfs4_open_and_get_state"
NFSv4: Ensure nfs_atomic_open set the dentry verifier on ENOENT
The direction field is set on 7 bits, thus we need to AND it with 0111 111 mask
in order to retrieve it, that is 0x7F, not 0xCF as it is now.
Fixes: ade7ef7ba (staging:iio: Differential channel handling)
Signed-off-by: Cristina Ciocan <cristina.ciocan@intel.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch set converts the hdev->identity_resolving_keys list to use
RCU to eliminate the need to use hci_dev_lock/unlock.
An additional change that must be done is to remove use of
CRYPTO_ALG_ASYNC for the hdev-specific AES crypto context. The reason is
that this context is used for matching RPAs and the loop that does the
matching is under the RCU read lock, i.e. is an atomic section which
cannot sleep.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch set converts the hdev->long_term_keys list to use RCU to
eliminate the need to use hci_dev_lock/unlock.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
drm: Sanitize DRM_IOCTL_MODE_CREATE_DUMB input
Some drivers erroneously treat the .pitch and .size fields of struct
drm_mode_create_dumb as inputs. While the include/uapi/drm/drm_mode.h
header has a comment denoting them as outputs, that seemingly wasn't
enough to make drivers use them properly.
The result is that some userspace doesn't explicitly zero out those
fields, assuming that the kernel won't use them. That causes problems
since the data within the structure might be uninitialized, so bogus
data may end up confusing drivers (ridiculously large values for the
pitch, ...).
This series attempts to improve the situation by fixing all drivers to
not use the output fields. Furthermore to spare new drivers this bad
surprise, the DRM core now zeros out these fields prior to handing the
data structure to the driver.
Lessons learned from this are that future IOCTLs should be properly
documented (in the DRM DocBook for example) and should be rigorously
defined. To prevent misuse like this, userspace should be required to
zero out all output fields. The kernel should check for this and fail
if that's not the case.
* tag 'drm/gem-cma/for-3.19-rc1' of git://people.freedesktop.org/~tagr/linux:
drm/cma: Remove call to drm_gem_free_mmap_offset()
drm: Sanitize DRM_IOCTL_MODE_CREATE_DUMB input
drm/rcar: gem: dumb: pitch is an output
drm/omap: gem: dumb: pitch is an output
drm/cma: Introduce drm_gem_cma_dumb_create_internal()
drm/doc: Add GEM/CMA helpers to kerneldoc
drm/doc: mm: Fix indentation
drm/gem: Fix a few kerneldoc typos
Virtual GPUs would like to give the guest some indication where on the screen
the outputs are layed out. So far we only provide modes, these
properties could be exposed to userspace so the desktop environment
could use them as hints to set the correct offsets.
v2: rename properties to be more consistent.
Signed-off-by: Dave Airlie <airlied@redhat.com>
drm/tegra: Changes for v3.19-rc1
The highlights in this pull request are:
* IOMMU support: The Tegra DRM driver can now deal with discontiguous
buffers if an IOMMU exists in the system. That means it can allocate
using drm_gem_get_pages() and will map them into IOVA space via the
IOMMU API. Similarly, non-contiguous PRIME buffers can be imported
from a different driver, which allows better integration with gk20a
(nouveau) and less hacks.
* Universal planes: This is precursory work for atomic modesetting and
will allow hardware cursor support to be implemented on pre-Tegra114
where RGB cursors were not supported.
* DSI ganged-mode support: The DSI controller can now gang up with a
second DSI controller to drive high resolution DSI panels.
Besides those bigger changes there is a slew of fixes, cleanups, plugged
memory leaks and so on.
* tag 'drm/tegra/for-3.19-rc1' of git://people.freedesktop.org/~tagr/linux: (44 commits)
drm/tegra: gem: Check before freeing CMA memory
drm/tegra: fb: Add error codes to error messages
drm/tegra: fb: Properly release GEM objects on failure
drm/tegra: Detach panel when a connector is removed
drm/tegra: Plug memory leak
drm/tegra: gem: Use more consistent data types
drm/tegra: fb: Do not destroy framebuffer
drm/tegra: gem: dumb: pitch and size are outputs
drm/tegra: Enable the hotplug interrupt only when necessary
drm/tegra: dc: Universal plane support
drm/tegra: dc: Registers are 32 bits wide
drm/tegra: dc: Factor out DC, window and cursor commit
drm/tegra: Add IOMMU support
drm/tegra: Fix error handling cleanup
drm/tegra: gem: Use dma_mmap_writecombine()
drm/tegra: gem: Remove redundant drm_gem_free_mmap_offset()
drm/tegra: gem: Cleanup tegra_bo_create_with_handle()
drm/tegra: gem: Extract tegra_bo_alloc_object()
drm/tegra: dsi: Set up PHY_TIMING & BTA_TIMING registers earlier
drm/tegra: dsi: Replace 1000000 by USEC_PER_SEC
...
drm: Miscellaneous fixes for v3.19-rc1
This is a small collection of fixes that I've been carrying around for a
while now. Many of these have been posted and reviewed or acked. The few
that haven't I deemed too trivial to bother.
* tag 'drm/fixes/for-3.19-rc1' of git://people.freedesktop.org/~tagr/linux:
video/hdmi: Relicense header under MIT license
drm/gma500: mdfld: Reuse video/mipi_display.h
drm: Make drm_mode_create_tv_properties() signature consistent
drm: Implement drm_get_pci_dev() dummy for !PCI
drm/prime: Use unsigned type for number of pages
drm/gem: Fix typo in kerneldoc
drm: Use const data when creating blob properties
drm: Use size_t for blob property sizes
drm/panel: Changes for v3.19-rc1
This contains support for a couple of new panels, updates for some GPIO
API changes and a bunch of updates to the MIPI DSI support that should
make it easier to write panel drivers in the future.
* tag 'drm/panel/for-3.19-rc1' of git://people.freedesktop.org/~tagr/linux: (31 commits)
drm/panel: Add Sharp LQ101R1SX01 support
drm/dsi: Do not require .owner field to be set
drm/dsi: Resolve MIPI DSI device from phandle
drm/dsi: Implement DCS set_{column,page}_address commands
drm/dsi: Implement DCS {get,set}_pixel_format commands
drm/dsi: Implement DCS get_power_mode command
drm/dsi: Implement DCS soft_reset command
drm/dsi: Implement DCS nop command
drm/dsi: Add to DocBook documentation
drm/dsi: Implement some standard DCS commands
drm/dsi: Implement generic read and write commands
drm/panel: s6e8aa0: Use standard MIPI DSI function
drm/dsi: Add mipi_dsi_set_maximum_return_packet_size() helper
drm/dsi: Constify mipi_dsi_msg
drm/dsi: Make mipi_dsi_dcs_{read,write}() symmetrical
drm/dsi: Add DSI transfer helper
drm/dsi: Add message to packet translator
drm/dsi: Introduce packet format helpers
drm/panel: s6e8aa0: Fix build warnings on 64-bit
drm/panel: ld9040: Fix build warnings on 64-bit
...
- skl watermarks code (Damien, Vandana, Pradeep)
- reworked audio codec /eld handling code (Jani)
- rework the mmio_flip code to use the vblank evade logic and wait for rendering
using the standard wait_seqno interface (Ander)
- skl forcewake support (Zhe Wang)
- refactor the chv interrupt code to use functions shared with vlv (Ville)
- prep work for different global gtt views (Tvrtko Ursulin)
- precompute the display PLL config before touching hw state (Ander)
- completely reworked panel power sequencer code for chv/vlv (Ville)
- pre work to split the plane update code into a prepare and commit phase
(Gustavo Padovan)
- golden context for skl (Armin Reese)
- as usual tons of fixes and improvements all over
* tag 'drm-intel-next-2014-11-07-fixups' of git://anongit.freedesktop.org/drm-intel: (135 commits)
drm/i915: Use correct pipe config to update pll dividers. V2
drm/i915: Plug memory leak in intel_shared_dpll_start_config()
drm/i915: Update DRIVER_DATE to 20141107
drm/i915: Add gen to the gpu hang ecode
drm/i915: Cache HPLL frequency on VLV/CHV
Revert "drm/i915/vlv: Remove check for Old Ack during forcewake"
drm/i915: Make mmio flip wait for seqno in the work function
drm/i915: Make __wait_seqno non-static and rename to __i915_wait_seqno
drm/i915: Move the .global_resources() hook call into modeset_update_crtc_power_domains()
drm/i915/audio: add DOC comment describing HDA over HDMI/DP
drm/i915: make pipe/port based audio valid accessors easier to use
drm/i915/audio: add audio codec enable debug log for g4x
drm/i915/audio: add audio codec disable on g4x
drm/i915: enable audio codec after port
drm/i915/audio: add vlv/chv/gen5-7 audio codec disable sequence
drm/i915/audio: rewrite vlv/chv and gen 5-7 audio codec enable sequence
drm/i915/skl: Enable Gen9 RC6
drm/i915/skl: Gen9 Forcewake
drm/i915/skl: Log the order in which we flush the pipes in the WM code
drm/i915/skl: Flush the WM configuration
...
Now that we're using lists instead of kfifo to store drm flip-work tasks
we do not need the size parameter passed to drm_flip_work_init function
anymore.
Moreover this function cannot fail anymore, we can thus remove the return
code.
Modify drm_flip_work_init users to take account of these changes.
[airlied: fixed two unused variable warnings]
Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Make use of lists instead of kfifo in order to dynamically allocate
task entry when someone require some delayed work, and thus preventing
drm_flip_work_queue from directly calling func instead of queuing this
call.
This allow drm_flip_work_queue to be safely called even within irq
handlers.
Add new helper functions to allocate a flip work task and queue it when
needed. This prevents allocating data within irq context (which might
impact the time spent in the irq handler).
Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
There are use cases when setting a LED brightness has to
have immediate effect (e.g. setting a torch LED brightness).
This patch extends LED subsystem to support such operations.
The LED subsystem internal API __led_set_brightness is changed
to led_set_brightness_async and new led_set_brightness_sync API
is added.
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
Add a mechanism for locking LED subsystem sysfs interface.
This patch prepares ground for addition of LED Flash Class
extension, whose API will be integrated with V4L2 Flash API.
Such a fusion enforces introducing a locking scheme, which
will secure consistent access to the LED Flash Class device.
The mechanism being introduced allows for disabling LED
subsystem sysfs interface by calling led_sysfs_disable function
and enabling it by calling led_sysfs_enable. The functions
alter the LED_SYSFS_DISABLE flag state and must be called
under mutex lock. The state of the lock is checked with use
of led_sysfs_is_disabled function. Such a design allows for
providing immediate feedback to the user space on whether
the LED Flash Class device is available or is under V4L2 Flash
sub-device control.
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
Most NICs that report NETIF_F_GSO_UDP_TUNNEL support VXLAN, and not
other UDP-based encapsulation protocols where the format and size of the
header differs. This patch implements a generic ndo_gso_check() for
VXLAN which will only advertise GSO support when the skb looks like it
contains VXLAN (or no UDP tunnelling at all).
Implementation shamelessly stolen from Tom Herbert:
http://thread.gmane.org/gmane.linux.network/332428/focus=333111
Signed-off-by: Joe Stringer <joestringer@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There could be a signed overflow in the following code.
The expression, (32-logmask) is comprised between 0 and 31 included.
It may be equal to 31.
In such a case the left shift will produce a signed integer overflow.
According to the C99 Standard, this is an undefined behavior.
A simple fix is to replace the signed int 1 with the unsigned int 1U.
Signed-off-by: Vincent BENAYOUN <vincent.benayoun@trust-in-soft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull ACPI and power management fixes from Rafael Wysocki:
"These are three regression fixes, two recent (generic power domains,
suspend-to-idle) and one older (cpufreq), an ACPI blacklist entry for
one more machine having problems with Windows 8 compatibility, a minor
cpufreq driver fix (cpufreq-dt) and a fixup for new callback
definitions (generic power domains).
Specifics:
- Fix a crash in the suspend-to-idle code path introduced by a recent
commit that forgot to check a pointer against NULL before
dereferencing it (Dmitry Eremin-Solenikov).
- Fix a boot crash on Exynos5 introduced by a recent commit making
that platform use generic Device Tree bindings for power domains
which exposed a weakness in the generic power domains framework
leading to that crash (Ulf Hansson).
- Fix a crash during system resume on systems where cpufreq depends
on Operation Performance Points (OPP) for functionality, but
CONFIG_OPP is not set. This leads the cpufreq driver registration
to fail, but the resume code attempts to restore the pre-suspend
cpufreq configuration (which does not exist) nevertheless and
crashes. From Geert Uytterhoeven.
- Add a new ACPI blacklist entry for Dell Vostro 3546 that has
problems if it is reported as Windows 8 compatible to the BIOS
(Adam Lee).
- Fix swapped arguments in an error message in the cpufreq-dt driver
(Abhilash Kesavan).
- Fix up the prototypes of new callbacks in struct generic_pm_domain
to make them more useful. Users of those callbacks will be added
in 3.19 and it's better for them to be based on the correct struct
definition in mainline from the start. From Ulf Hansson and Kevin
Hilman"
* tag 'pm+acpi-3.18-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM / Domains: Fix initial default state of the need_restore flag
PM / sleep: Fix entering suspend-to-IDLE if no freeze_oops is set
PM / Domains: Change prototype for the attach and detach callbacks
cpufreq: Avoid crash in resume on SMP without OPP
cpufreq: cpufreq-dt: Fix arguments in clock failure error message
ACPI / blacklist: blacklist Win8 OSI for Dell Vostro 3546
This reverts commit e5a2c89995.
Commit e5a2c899 introduced an alternative_call, arch_fast_hash2,
that selects between __jhash2 and __intel_crc4_2_hash based on the
X86_FEATURE_XMM4_2.
Unfortunately, the alternative_call system does not appear to be
suitable for use with C functions, as register usage is not handled
properly for the called functions. The __jhash2 function in particular
clobbers registers that are not preserved when called via
alternative_call, resulting in a panic for direct callers of
arch_fast_hash2 on older CPUs lacking sse4_2. It is possible that
__intel_crc4_2_hash works merely by chance because it uses fewer
registers.
This commit was suggested as the source of the problem by Jesse
Gross <jesse@nicira.com>.
Signed-off-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add device tree support by changing the device registration order.
In the device tree the si4713 node is a normal I2C device, which
will be probed as such. Thus the V4L device must be probed from
the I2C device and not the other way around.
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Place v4l2_mbus_pixelcode in a #ifndef __KERNEL__ section so that kernel
users don't have access to these definitions.
We have to keep this definition for user-space users even though they're
encouraged to move to the new media_bus_format enum.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Define MEDIA_BUS_FMT macros (re-using the values defined in the
v4l2_mbus_pixelcode enum) into a separate header file so that they can be
used from the DRM/KMS subsystem without any reference to the V4L2
subsystem.
Then set V4L2_MBUS_FMT definitions to the MEDIA_BUS_FMT values using the
V4L2_MBUS_FROM_MEDIA_BUS_FMT macro.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Some OMAP clock/hwmod patches for v3.19.
Most of the patches are clock-related. The DPLL implementation is
changed to better align to the common clock framework.
There is also a patch that removes a few lines from the hwmod code -
this patch should have no functional effect.
Basic build, boot, and PM test logs for these patches can be found here:
http://www.pwsan.com/omap/testlogs/omap-a-for-v3.19/20141113094101/
Some IOMMUs accept an IOMMU_NOEXEC protection flag in addition to
IOMMU_READ and IOMMU_WRITE. Expose this as an IOMMU capability.
Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com>
Acked-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Exposing the XN flag of the SMMU driver as IOMMU_NOEXEC instead of
IOMMU_EXEC makes it enforceable, since for IOMMUs that don't support
the XN flag pages will always be executable.
Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com>
Acked-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Will Deacon <will.deacon@arm.com>
* pm-domains:
PM / Domains: Fix initial default state of the need_restore flag
PM / Domains: Change prototype for the attach and detach callbacks
* pm-sleep:
PM / sleep: Fix entering suspend-to-IDLE if no freeze_oops is set
* pm-cpufreq:
cpufreq: Avoid crash in resume on SMP without OPP
cpufreq: cpufreq-dt: Fix arguments in clock failure error message
Keep the extern declaration of of_allnodes and friends, when building without
of support, this way code using them can be written like this:
if (IS_ENABLED(CONFIG_OF_PLATFORM) && of_chosen) {
for_each_child_of_node(of_chosen, np)
...
}
And rely on the compiler optimizing it away, avoiding the need for #ifdef-ery.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Currently objects for which the hardware needs a contiguous physical
address are allocated a shadow backing storage to satisfy the contraint.
This shadow buffer is not wired into the normal obj->pages and so the
physical object is incoherent with accesses via the GPU, GTT and CPU. By
setting up the appropriate scatter-gather table, we can allow userspace
to access the physical object via either a GTT mmaping of or by rendering
into the GEM bo. However, keeping the CPU mmap of the shmemfs backing
storage coherent with the contiguous shadow is not yet possible.
Fortuituously, CPU mmaps of objects requiring physical addresses are not
expected to be coherent anyway.
This allows the physical constraint of the GEM object to be transparent
to userspace and allow it to efficiently render into or update them via
the GTT and GPU.
v2: Fix leak of pci handle spotted by Ville
v3: Remove the now duplicate call to detach_phys_object during free.
v4: Wait for rendering before pwrite. As this patch makes it possible to
render into the phys object, we should make it correct as well!
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Update generic gup implementation with powerpc specific details.
On powerpc at pmd level we can have hugepte, normal pmd pointer
or a pointer to the hugepage directory.
Tested-by: Steve Capper <steve.capper@linaro.org>
Acked-by: Steve Capper <steve.capper@linaro.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
