Commit Graph

635226 Commits

Author SHA1 Message Date
Vineet Gupta 107177b14d ARCv2: intc: default all interrupts to priority 1
ARC HS Cores support configurable multiple interrupt priorities of upto
16 levels. In commit dec2b2849c ("ARCv2: intc: Allow interruption by
lowest priority interrupt") we switched to 15 which seems a bit
excessive given that there would be rare hardware implementing so many
preemption levels AND running Linux. It would seem that 2 levels will be
more common so switch to 1 as the default priority level. This will be
the "lower" priority level saving 0 for implementing NMI style support.

This scheme also works in systems with more than 2 prioity levels as
well.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-12-14 09:23:46 -08:00
Vineet Gupta 78833e79d5 ARCv2: entry: document intr disable in hard isr
And while at it - use the proper assembler macro which includes the
optional irq tracing already - de-uglify'ing the code a bit

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-12-14 09:23:45 -08:00
Vineet Gupta f5f3bde4f6 ARC: ARCompact entry: elide re-reading ECR in ProtV handler
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-12-13 13:16:11 -08:00
Alexey Brodkin 7badf6fefc ARC: axs10x: really enable ARC PGU
Up until now we had ARC PGU not enabled in axs10x defconfigs trying
to not bloat kernel image again with yet another drivers and subsystems.

This change configures ARC PGU (as well as DRM bits it depends on)
to be built as a module and so those who need LCD screen to work on
axs10x may bundle built .ko files in their target's file-system with
help of the following command on host:
------------->8-------------
make INSTALL_MOD_PATH=_path_to_target_fs_ modules_install
------------->8-------------

and later on target with commands as simple as:
------------->8-------------
modprobe adv7511.ko
modprobe arcpgu.ko
------------->8-------------
get LCD working.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-11-30 11:54:25 -08:00
Vineet Gupta 4988cc5635 ARC: rename Zebu platform support to HAPS
There are more ARC Linux HAPS users than Zebu ones.

Same kernel would work fine on both, even with embedded DT, assuming the FPGA
bitfile configuration is same

Suggested-by: Francois Bedard <fbedard@ynopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-11-30 11:54:25 -08:00
Arnd Bergmann a26b0d4962 clocksource: nps: avoid maybe-uninitialized warning
We get a harmless false-positive warning with the newly added nps
clocksource driver:

drivers/clocksource/timer-nps.c: In function 'nps_setup_clocksource':
drivers/clocksource/timer-nps.c:102:6: error: 'nps_timer1_freq' may be used uninitialized in this function [-Werror=maybe-uninitialized]

Gcc here fails to identify that IS_ERR() is only true if PTR_ERR()
has a nonzero value. Using PTR_ERR_OR_ZERO() to convert the result
first makes this obvious and shuts up the warning.

Fixes: 0ee4d9922df5 ("clocksource: Add clockevent support to NPS400 driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-11-30 11:54:25 -08:00
Noam Camus 60263dcd82 clocksource: Add clockevent support to NPS400 driver
Till now we used clockevent from generic ARC driver.
This was enough as long as we worked with simple multicore SoC.
When we are working with multithread SoC each HW thread can be
scheduled to receive timer interrupt using timer mask register.
This patch will provide a way to control clock events per HW thread.

The design idea is that for each core there is dedicated register
(TSI) serving all 16 HW threads.
The register is a bitmask with one bit for each HW thread.
When HW thread wants that next expiration of timer interrupt will
hit it then the proper bit should be set in this dedicated register.
When timer expires all HW threads within this core which their bit
is set at the TSI register will be interrupted.

Driver can be used from device tree by:
compatible = "ezchip,nps400-timer0" <-- for clocksource
compatible = "ezchip,nps400-timer1" <-- for clockevent

Note that name convention for timer0/timer1 was taken from legacy
ARC design. This design is our base before adding HW threads.
For backward compatibility we keep "ezchip,nps400-timer" for clocksource

Signed-off-by: Noam Camus <noamca@mellanox.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
2016-11-30 11:54:25 -08:00
Noam Camus 0465fb495f clocksource: update "fn" at CLOCKSOURCE_OF_DECLARE() of nps400 timer
nps_setup_clocksource() should take node as only argument as defined by
typedef int (*of_init_fn_1_ret)(struct device_node *)

Therefore need to replace:
int __init nps_setup_clocksource(struct device_node *node, struct clk *clk)
with
int __init nps_setup_clocksource(struct device_node *node)

This patch also serve as preparation for next patch which add support
for clockevents to nps400.
Specifically we add new function nps_get_timer_clk() to serve clocksource
and later clockevent registration.

Signed-off-by: Noam Camus <noamca@mellanox.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2016-11-30 11:54:25 -08:00
Noam Camus 09dcd1958b soc: Support for NPS HW scheduling
This new header file is for NPS400 SoC (part of ARC architecture).
The header file includes macros for save/restore of HW scheduling.
The control of HW scheduling is achieved by writing core registers.
This code was moved from arc/plat-eznps so it can be used
from drivers/clocksource/, available only for CONFIG_EZNPS_MTM_EXT.

Signed-off-by: Noam Camus <noamca@mellanox.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2016-11-30 11:54:25 -08:00
Vineet Gupta c4c9a040ec clocksource: import ARC timer driver
This adds support for

 - CONFIG_ARC_TIMERS : legacy 32-bit TIMER0 and TIMER1 which count UP
   from @CNT to @LIMIT, before optionally triggering an interrupt.
   These are programmed using ARC auxiliary register interface.
   These are present in all ARC cores (ARC700 and ARC HS38)
   TIMER0 serves as clockevent for all ARC linux builds.
   TIMER1 is used for clocksource in arc700 builds.

 - CONFIG_ARC_TIMERS_64BIT: 64-bit counters, RTC and GFRC found in
   ARC HS38 cores. These are independnet IP blocks with different
   programming model respectively.

Link: http://lkml.kernel.org/r/20161111231132.GA4186@mai
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-11-30 11:54:25 -08:00
Vineet Gupta b26c2e3823 ARC: breakout timer include code into separate header ...
... which allows for use in drivers/clocksource later

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-11-30 11:54:25 -08:00
Vineet Gupta 2d7f5c48c0 ARC: move mcip.h into include/soc and adjust the includes
Also remove the dependency on ARCv2, to increase compile coverage for
!ARCV2 builds

Acked-by: Daniel Lezcano <daniel.lezcnao@linaro.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-11-30 11:54:25 -08:00
Vineet Gupta c33a605dd6 ARC: breakout aux handling into a separate header
ARC timers use aux registers for programming and this paves way for
moving ARC timer drivers into drivers/clocksource

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-11-30 11:54:25 -08:00
Vineet Gupta 92b0331403 ARC: time: move time_init() out of the driver
to allow future git mv of the driver into drivers/clocksource

Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-11-30 11:54:25 -08:00
Vineet Gupta 044214200b ARC: timer: gfrc, rtc: build under same option (64-bit timers)
The original distinction was done as they were developed at different
times and primarily because they are specific to UP (RTC) and SMP (GFRC).

But given that driver handles that at runtime, (i.e. not allowing
RTC as clocksource in SMP), we can simplify things a bit.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-11-30 11:54:25 -08:00
Vineet Gupta ec7cb87bf9 ARC: timer: gfrc, rtc: Read BCR to detect whether hardware exists ...
... don't rely on cpuinfo populated in arc boot code. This paves way for
moving this code in drivers/clocksource/

And while at it, convert the WARN() to pr_warn() as sugested by Daniel

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-11-30 11:54:25 -08:00
Vineet Gupta 2cd690ea6d ARC: timer: gfrc, rtc: deuglify big endian code
A standard "C" shift will be handled appropriately by the compiler
depending on the endian for the build. So we don't need the
explicit distinction in code

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-11-30 11:54:25 -08:00
Yuriy Kolerov 6a8b2ca702 ARC: mm: PAE40: Fix crash at munmap
commit 1c3c909303 broke PAE40. Macro pfn_pte(pfn, prot) creates paddr
from pfn, but the page shift was getting truncated to 32 bits since we lost
the proper cast to 64 bits (for PAE400

Instead of reverting that commit, use a better helper which is 32/64 bits
safe just like ARM implementation.

Fixes: 1c3c909303 ("ARC: mm: fix build breakage with STRICT_MM_TYPECHECKS")
Cc: <stable@vger.kernel.org>   #4.4+
Signed-off-by: Yuriy Kolerov <yuriy.kolerov@synopsys.com>
[vgupta: massaged changelog]
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-11-29 09:12:08 -08:00
Vineet Gupta 23cb1f6440 ARC: mm: IOC: Don't enable IOC by default
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-11-28 09:18:36 -08:00
Vineet Gupta 3c7c7a2fc8 ARC: Don't use "+l" inline asm constraint
Apparenty this is coming in the way of gcc fix which inhibits the usage
of LP_COUNT as a gpr.

Cc: stable@vger.kernel.org
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-11-28 09:17:32 -08:00
Linus Torvalds e5517c2a5a Linux 4.9-rc7 2016-11-27 13:08:04 -08:00
Linus Torvalds 105ecadc6d Merge git://git.infradead.org/intel-iommu
Pull IOMMU fixes from David Woodhouse:
 "Two minor fixes.

  The first fixes the assignment of SR-IOV virtual functions to the
  correct IOMMU unit, and the second fixes the excessively large (and
  physically contiguous) PASID tables used with SVM"

* git://git.infradead.org/intel-iommu:
  iommu/vt-d: Fix PASID table allocation
  iommu/vt-d: Fix IOMMU lookup for SR-IOV Virtual Functions
2016-11-27 08:24:46 -08:00
Linus Torvalds ff17bf8a0d Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:
 "Another round of MIPS fixes for 4.9:

   - Fix unreadable output in __do_page_fault due to the KERN_CONT
     patchset

   - Correctly handle MIPS R6 fixes to the c0_wired register"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: mm: Fix output of __do_page_fault
  MIPS: Mask out limit field when calculating wired entry count
2016-11-27 08:22:59 -08:00
Linus Torvalds d8e435f3ab Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs splice fix from Al Viro.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fix default_file_splice_read()
2016-11-26 17:21:13 -08:00
Al Viro 8e54cadab4 fix default_file_splice_read()
Botched calculation of number of pages.  As the result,
we were dropping pieces when doing splice to pipe from
e.g. 9p.

Reported-by: Alexei Starovoitov <ast@kernel.org>
Tested-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-11-26 20:05:42 -05:00
Linus Torvalds e348031214 Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
 "Here is a revert and two bugfixes for the I2C designware driver.

  Please note that we are still hunting down a regression for the
  i2c-octeon driver. While there is a fix pending, we have unclear
  feedback from the testers currently. An rc8 would be quite helpful
  for this case"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  Revert "i2c: designware: do not disable adapter after transfer"
  i2c: designware: fix rx fifo depth tracking
  i2c: designware: report short transfers
2016-11-26 15:28:34 -08:00
Linus Torvalds a56f3eb2cd Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM fix from Russell King:
 "This resolves the ksyms issues by reverting the commit which
  introduced the breakage"

There was what I consider to be a better fix, but it's late in the rc
game, so I'll take the revert.

* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
  Revert "arm: move exports to definitions"
2016-11-26 15:26:20 -08:00
Linus Torvalds a0d60e62ea Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Fix leak in fsl/fman driver, from Dan Carpenter.

 2) Call flow dissector initcall earlier than any networking driver can
    register and start to use it, from Eric Dumazet.

 3) Some dup header fixes from Geliang Tang.

 4) TIPC link monitoring compat fix from Jon Paul Maloy.

 5) Link changes require EEE re-negotiation in bcm_sf2 driver, from
    Florian Fainelli.

 6) Fix bogus handle ID passed into tfilter_notify_chain(), from Roman
    Mashak.

 7) Fix dump size calculation in rtnl_calcit(), from Zhang Shengju.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (26 commits)
  tipc: resolve connection flow control compatibility problem
  mvpp2: use correct size for memset
  net/mlx5: drop duplicate header delay.h
  net: ieee802154: drop duplicate header delay.h
  ibmvnic: drop duplicate header seq_file.h
  fsl/fman: fix a leak in tgec_free()
  net: ethtool: don't require CAP_NET_ADMIN for ETHTOOL_GLINKSETTINGS
  tipc: improve sanity check for received domain records
  tipc: fix compatibility bug in link monitoring
  net: ethernet: mvneta: Remove IFF_UNICAST_FLT which is not implemented
  dwc_eth_qos: drop duplicate headers
  net sched filters: fix filter handle ID in tfilter_notify_chain()
  net: dsa: bcm_sf2: Ensure we re-negotiate EEE during after link change
  bnxt: do not busy-poll when link is down
  udplite: call proper backlog handlers
  ipv6: bump genid when the IFA_F_TENTATIVE flag is clear
  net/mlx4_en: Free netdev resources under state lock
  net: revert "net: l2tp: Treat NET_XMIT_CN as success in l2tp_eth_dev_xmit"
  rtnetlink: fix the wrong minimal dump size getting from rtnl_calcit()
  bnxt_en: Fix a VXLAN vs GENEVE issue
  ...
2016-11-26 13:05:05 -08:00
Linus Torvalds 30e2b7cfc5 Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:

 - Fix a crash that occurs at driver initialization if the memory region
   is already busy (request_mem_region() fails).

 - Fix a vma validation check that mistakenly allows a private device-
   dax mapping to be established. Device-dax explicitly forbids private
   mappings so it can guarantee a given fault granularity and backing
   memory type.

 Both of these fixes have soaked in -next and are tagged for -stable.

* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  device-dax: fail all private mapping attempts
  device-dax: check devm_nsio_enable() return value
2016-11-26 12:24:47 -08:00
Linus Torvalds fc13ca191e KVM fixes for v4.9-rc7
Four fixes for bugs found by syzkaller on x86, all for stable.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Radim Krčmář:
 "Four fixes for bugs found by syzkaller on x86, all for stable"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86: check for pic and ioapic presence before use
  KVM: x86: fix out-of-bounds accesses of rtc_eoi map
  KVM: x86: drop error recovery in em_jmp_far and em_ret_far
  KVM: x86: fix out-of-bounds access in lapic
2016-11-26 12:18:59 -08:00
Linus Torvalds 39c1573748 powerpc fixes for 4.9 #6
Fixes marked for stable:
  - Set missing wakeup bit in LPCR on POWER9 (Benjamin Herrenschmidt)
  - Fix the early OPAL console wrappers (Oliver O'Halloran)
  - Fixup kernel read only mapping (Aneesh Kumar K.V)
 
 Fixes for code merged this cycle:
  - Fix missing CRCs, add more asm-prototypes.h declarations (Nicholas Piggin)
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Merge tag 'powerpc-4.9-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "Fixes marked for stable:
   - Set missing wakeup bit in LPCR on POWER9
   - Fix the early OPAL console wrappers
   - Fixup kernel read only mapping

  Fixes for code merged this cycle:
   - Fix missing CRCs, add more asm-prototypes.h declarations"

* tag 'powerpc-4.9-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/mm: Fixup kernel read only mapping
  powerpc/boot: Fix the early OPAL console wrappers
  powerpc: Fix missing CRCs, add more asm-prototypes.h declarations
  powerpc: Set missing wakeup bit in LPCR on POWER9
2016-11-26 11:24:03 -08:00
Jon Paul Maloy 6998cc6ec2 tipc: resolve connection flow control compatibility problem
In commit 10724cc7bb ("tipc: redesign connection-level flow control")
we replaced the previous message based flow control with one based on
1k blocks. In order to ensure backwards compatibility the mechanism
falls back to using message as base unit when it senses that the peer
doesn't support the new algorithm. The default flow control window,
i.e., how many units can be sent before the sender blocks and waits
for an acknowledge (aka advertisement) is 512. This was tested against
the previous version, which uses an acknowledge frequency of on ack per
256 received message, and found to work fine.

However, we missed the fact that versions older than Linux 3.15 use an
acknowledge frequency of 512, which is exactly the limit where a 4.6+
sender will stop and wait for acknowledge. This would also work fine if
it weren't for the fact that if the first sent message on a 4.6+ server
side is an empty SYNACK, this one is also is counted as a sent message,
while it is not counted as a received message on a legacy 3.15-receiver.
This leads to the sender always being one step ahead of the receiver, a
scenario causing the sender to block after 512 sent messages, while the
receiver only has registered 511 read messages. Hence, the legacy
receiver is not trigged to send an acknowledge, with a permanently
blocked sender as result.

We solve this deadlock by simply allowing the sender to send one more
message before it blocks, i.e., by a making minimal change to the
condition used for determining connection congestion.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-25 21:38:16 -05:00
Arnd Bergmann e8f967c3d8 mvpp2: use correct size for memset
gcc-7 detects a short memset in mvpp2, introduced in the original
merge of the driver:

drivers/net/ethernet/marvell/mvpp2.c: In function 'mvpp2_cls_init':
drivers/net/ethernet/marvell/mvpp2.c:3296:2: error: 'memset' used with length equal to number of elements without multiplication by element size [-Werror=memset-elt-size]

The result seems to be that we write uninitialized data into the
flow table registers, although we did not get any warning about
that uninitialized data usage.

Using sizeof() lets us initialize then entire array instead.

Fixes: 3f518509de ("ethernet: Add new driver for Marvell Armada 375 network unit")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-25 20:57:21 -05:00
Geliang Tang 5e7dfeb758 net/mlx5: drop duplicate header delay.h
Drop duplicate header delay.h from mlx5/core/main.c.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Acked-by: Matan Barak <matanb@mellanox.com>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-25 20:33:10 -05:00
Geliang Tang 8f8a8b13b4 net: ieee802154: drop duplicate header delay.h
Drop duplicate header delay.h from adf7242.c.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Acked-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-25 20:33:10 -05:00
Geliang Tang 4ee12efa2d ibmvnic: drop duplicate header seq_file.h
Drop duplicate header seq_file.h from ibmvnic.c.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-25 20:32:10 -05:00
Dan Carpenter 1f1e70efe5 fsl/fman: fix a leak in tgec_free()
We set "tgec->cfg" to NULL before passing it to kfree().  There is no
need to set it to NULL at all.  Let's just delete it.

Fixes: 57ba4c9b56 ("fsl/fman: Add FMan MAC support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-25 20:29:48 -05:00
Miroslav Lichvar 8006f6bf5e net: ethtool: don't require CAP_NET_ADMIN for ETHTOOL_GLINKSETTINGS
The ETHTOOL_GLINKSETTINGS command is deprecating the ETHTOOL_GSET
command and likewise it shouldn't require the CAP_NET_ADMIN capability.

Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-25 20:23:30 -05:00
Jon Paul Maloy d876a4d2af tipc: improve sanity check for received domain records
In commit 35c55c9877 ("tipc: add neighbor monitoring framework") we
added a data area to the link monitor STATE messages under the
assumption that previous versions did not use any such data area.

For versions older than Linux 4.3 this assumption is not correct. In
those version, all STATE messages sent out from a node inadvertently
contain a 16 byte data area containing a string; -a leftover from
previous RESET messages which were using this during the setup phase.
This string serves no purpose in STATE messages, and should no be there.

Unfortunately, this data area is delivered to the link monitor
framework, where a sanity check catches that it is not a correct domain
record, and drops it. It also issues a rate limited warning about the
event.

Since such events occur much more frequently than anticipated, we now
choose to remove the warning in order to not fill the kernel log with
useless contents. We also make the sanity check stricter, to further
reduce the risk that such data is inavertently admitted.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-25 20:06:18 -05:00
Jon Paul Maloy f79675563a tipc: fix compatibility bug in link monitoring
commit 817298102b ("tipc: fix link priority propagation") introduced a
compatibility problem between TIPC versions newer than Linux 4.6 and
those older than Linux 4.4. In versions later than 4.4, link STATE
messages only contain a non-zero link priority value when the sender
wants the receiver to change its priority. This has the effect that the
receiver resets itself in order to apply the new priority. This works
well, and is consistent with the said commit.

However, in versions older than 4.4 a valid link priority is present in
all sent link STATE messages, leading to cyclic link establishment and
reset on the 4.6+ node.

We fix this by adding a test that the received value should not only
be valid, but also differ from the current value in order to cause the
receiving link endpoint to reset.

Reported-by: Amar Nv <amar.nv005@gmail.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-25 20:06:18 -05:00
Andrew Lunn 97db8afa2a net: ethernet: mvneta: Remove IFF_UNICAST_FLT which is not implemented
The mvneta driver advertises it supports IFF_UNICAST_FLT. However, it
actually does not. The hardware probably does support it, but there is
no code to configure the filter. As a quick and simple fix, remove the
flag. This will cause the core to fall back to promiscuous mode.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Fixes: b50b72de2f ("net: mvneta: enable features before registering the driver")
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-25 19:56:37 -05:00
Linus Torvalds 3ad0e83cf8 Merge branch 'parisc-4.9-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller:
 "On parisc we were still seeing occasional random segmentation faults
  and memory corruption on SMP machines. Dave Anglin then looked again
  at the TLB related code and found two issues in the PCI DMA and
  generic TLB flush functions.

  Then, in our startup code we had some timing of the cache and TLB
  functions to calculate a threshold when to use a complete TLB/cache
  flush or just to flush a specific range. This code produced a race
  with newly started CPUs and thus lead to occasional kernel crashes
  (due to stale TLB/cache entries). The patch by Dave fixes this issue
  by flushing the local caches before starting secondary CPUs and by
  removing the race.

  The last problem fixed by this series is that we quite often suffered
  from hung tasks and self-detected stalls on the CPUs. It was somehow
  clear that this was related to the (in v4.7) newly introduced cr16
  clocksource and the own implementation of sched_clock(). I replaced
  the open-coded sched_clock() function and switched to the generic
  sched_clock() implementation which seems to have fixed this isse as
  well.

  All patches have been sucessfully tested on a variety of machines,
  including our debian buildd servers.

  All patches (beside the small pr_cont fix) are tagged for stable
  releases"

* 'parisc-4.9-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Also flush data TLB in flush_icache_page_asm
  parisc: Fix race in pci-dma.c
  parisc: Switch to generic sched_clock implementation
  parisc: Fix races in parisc_setup_cache_timing()
  parisc: Fix printk continuations in system detection
2016-11-25 16:47:15 -08:00
Linus Torvalds 86b01b5419 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull keys fixes from James Morris:
 "From David:

   - Fix mpi_powm()'s handling of a number with a zero exponent
     [CVE-2016-8650].

     Integrate my and Andrey's patches for mpi_powm() and use
     mpi_resize() instead of RESIZE_IF_NEEDED() - the latter adds a
     duplicate check into the execution path of a trivial case we
     don't normally expect to be taken.

   - Fix double free in X.509 error handling"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  mpi: Fix NULL ptr dereference in mpi_powm() [ver #3]
  X.509: Fix double free in x509_cert_parse() [ver #3]
2016-11-25 15:53:45 -08:00
Linus Torvalds cd3caefb46 Fix subtle CONFIG_MODVERSIONS problems
CONFIG_MODVERSIONS has been broken for pretty much the whole 4.9 series,
and quite frankly, nobody has cared very deeply.  We absolutely know how
to fix it, and it's not _complicated_, but it's not exactly pretty
either.

This oneliner fixes it without the ugliness, and allows for further
future cleanups.

  "We've secretly replaced their regular MODVERSIONS with nothing at
   all, let's see if they notice"

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-25 15:44:47 -08:00
Linus Torvalds beb53e4b23 ACPI fixes for v4.9-rc7
- Revert the recent commit that caused the ACPI _PTS method to
    be executed in the power-off/reboot code path (as per the
    specification) in an attempt to improve things on some systems
    (apparently expecting _PTS to be executed in that code path),
    but broke power-off/reboot on at least one other machine (Rafael
    Wysocki).
 
  - Fix kernel builds with the new WDAT watchdog driver enabled in
    some configurations by explicitly selecting WATCHDOG_CORE when
    enabling the WDAT watchdog driver (Mika Westerberg).
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Merge tag 'acpi-4.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fixes from Rafael Wysocki:
 "Two ACPI fixes for 4.9-rc7.

  One of them reverts a recent ACPI commit that attempted to improve
  reboot/power-off on some systems, but introduced problems elsewhere,
  and the other one fixes kernel builds with the new WDAT watchdog
  driver enabled in some configurations.

  Specifics:

   - Revert the recent commit that caused the ACPI _PTS method to be
     executed in the power-off/reboot code path (as per the
     specification) in an attempt to improve things on some systems
     (apparently expecting _PTS to be executed in that code path), but
     broke power-off/reboot on at least one other machine (Rafael
     Wysocki).

   - Fix kernel builds with the new WDAT watchdog driver enabled in some
     configurations by explicitly selecting WATCHDOG_CORE when enabling
     the WDAT watchdog driver (Mika Westerberg)"

* tag 'acpi-4.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  watchdog: wdat_wdt: Select WATCHDOG_CORE
  Revert "ACPI: Execute _PTS before system reboot"
2016-11-25 15:16:51 -08:00
Rafael J. Wysocki 686564434e MAINTAINERS: Add bug tracking system location entry type
Following the kernel Bugzilla discussion during the Kernel Summit
(https://lwn.net/Articles/705245/), add bug tracking system location
entry type (B) to MAINTAINERS and populate it for several subsystems
known to be using the kernel BZ actively (and add the upstream BZ for
ACPICA too).

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-25 15:16:28 -08:00
Jarkko Nikula 89119f0835 Revert "i2c: designware: do not disable adapter after transfer"
This reverts commit 0317e6c0f1.

Srinivas reported recently touchscreen and touchpad stopped working in
Haswell based machine in Linux 4.9-rc series with timeout errors from
i2c_designware:

[   16.508013] i2c_designware INT33C3:00: controller timed out
[   16.508302] i2c_hid i2c-MSFT0001:02: failed to change power setting.
[   17.532016] i2c_designware INT33C3:00: controller timed out
[   18.556022] i2c_designware INT33C3:00: controller timed out
[   18.556315] i2c_hid i2c-ATML1000:00: failed to retrieve report from device.

I managed to reproduce similar errors on another Haswell based machine
where touchscreen initialization fails maybe in every 1/5 - 1/2 boots.
Since root cause for these errors is not clear yet and debugging is
ongoing it's better to revert this commit as we are near to release.

Reported-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-11-25 23:23:25 +01:00
Rafael J. Wysocki 7e5c07af86 Merge branches 'acpi-sleep-fixes' and 'acpi-wdat-fixes'
* acpi-sleep-fixes:
  Revert "ACPI: Execute _PTS before system reboot"

* acpi-wdat-fixes:
  watchdog: wdat_wdt: Select WATCHDOG_CORE
2016-11-25 22:24:07 +01:00
David S. Miller fb09c8c524 linux-can-fixes-for-4.9-20161123
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Merge tag 'linux-can-fixes-for-4.9-20161123' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2016-11-23

this is a pull request for net/master.

The patch by Oliver Hartkopp for the broadcast manager (bcm) fixes the
CAN-FD support, which may cause an out-of-bounds access otherwise.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-25 16:17:12 -05:00
Geliang Tang f7db0ec957 dwc_eth_qos: drop duplicate headers
Drop duplicate headers types.h and delay.h from dwc_eth_qos.c.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-25 16:13:59 -05:00