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Commit Graph

36848 Commits

Author SHA1 Message Date
Rafael J. Wysocki
3a56fe685d Merge branches 'pm-cpuidle', 'pm-cpufreq' and 'pm-cpufreq-sched'
* pm-cpuidle:
  cpuidle: Add 'above' and 'below' idle state metrics
  cpuidle: big.LITTLE: fix refcount leak
  cpuidle: Add cpuidle.governor= command line parameter
  cpuidle: poll_state: Disregard disable idle states
  Documentation: admin-guide: PM: Add cpuidle document

* pm-cpufreq:
  cpufreq: qcom-hw: Add support for QCOM cpufreq HW driver
  dt-bindings: cpufreq: Introduce QCOM cpufreq firmware bindings
  cpufreq: nforce2: Remove meaningless return
  cpufreq: ia64: Remove unused header files
  cpufreq: imx6q: save one condition block for normal case of nvmem read
  cpufreq: imx6q: remove unused code
  cpufreq: pmac64: add of_node_put()
  cpufreq: powernv: add of_node_put()
  Documentation: intel_pstate: Clarify coordination of P-State limits
  cpufreq: intel_pstate: Force HWP min perf before offline
  cpufreq: s3c24xx: Change to use DEFINE_SHOW_ATTRIBUTE macro

* pm-cpufreq-sched:
  sched/cpufreq: Add the SPDX tags
2018-12-21 10:06:06 +01:00
Taniya Das
0a3b0c7f97 dt-bindings: cpufreq: Introduce QCOM cpufreq firmware bindings
Add QCOM cpufreq firmware device bindings for Qualcomm Technology Inc's
SoCs. This is required for managing the cpu frequency transitions which are
controlled by the hardware engine.

Signed-off-by: Taniya Das <tdas@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Amit Kucheria <amit.kucheria@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-12-18 23:42:52 +01:00
Linus Torvalds
880b9df1bf XArray updates for 4.20-rc7
Two bugfixes, each with test-suite updates, two improvements to the
 test-suite without associated bugs, and one patch adding a missing API.
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Merge tag 'xarray-4.20-rc7' of git://git.infradead.org/users/willy/linux-dax

Pull XArray fixes from Matthew Wilcox:
 "Two bugfixes, each with test-suite updates, two improvements to the
  test-suite without associated bugs, and one patch adding a missing
  API"

* tag 'xarray-4.20-rc7' of git://git.infradead.org/users/willy/linux-dax:
  XArray: Fix xa_alloc when id exceeds max
  XArray tests: Check iterating over multiorder entries
  XArray tests: Handle larger indices more elegantly
  XArray: Add xa_cmpxchg_irq and xa_cmpxchg_bh
  radix tree: Don't return retry entries from lookup
2018-12-13 16:35:58 -08:00
Linus Torvalds
14a996c383 media fixes for v4.20-rc7
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Merge tag 'media/v4.20-5' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab:

 - one regression at vsp1 driver

 - some last time changes for the upcoming request API logic and for
   stateless codec support. As the stateless codec "cedrus" driver is at
   staging, don't apply the MPEG controls as part of the main V4L2 API,
   as those may not be ready for production yet.

* tag 'media/v4.20-5' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  media: Add a Kconfig option for the Request API
  media: extended-controls.rst: add note to the MPEG2 state controls
  media: mpeg2-ctrls.h: move MPEG2 state controls to non-public header
  media: vicodec: set state resolution from raw format
  media: vivid: drop v4l2_ctrl_request_complete() from start_streaming
  media: vb2: don't unbind/put the object when going to state QUEUED
  media: vb2: keep a reference to the request until dqbuf
  media: vb2: skip request checks for VIDIOC_PREPARE_BUF
  media: vb2: don't call __vb2_queue_cancel if vb2_start_streaming failed
  media: cedrus: Fix a NULL vs IS_ERR() check
  media: vsp1: Fix LIF buffer thresholds
2018-12-12 18:24:32 -08:00
Rafael J. Wysocki
04dab58a39 cpuidle: Add 'above' and 'below' idle state metrics
Add two new metrics for CPU idle states, "above" and "below", to count
the number of times the given state had been asked for (or entered
from the kernel's perspective), but the observed idle duration turned
out to be too short or too long for it (respectively).

These metrics help to estimate the quality of the CPU idle governor
in use.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-12-12 23:22:18 +01:00
Rafael J. Wysocki
61cb5758d3 cpuidle: Add cpuidle.governor= command line parameter
Add cpuidle.governor= command line parameter to allow the default
cpuidle governor to be replaced.

That is useful, for example, if someone running a tickful kernel
wants to use the menu governor on it.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-12-11 12:08:44 +01:00
Linus Torvalds
d48f782e4f Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:
 "A decent batch of fixes here. I'd say about half are for problems that
  have existed for a while, and half are for new regressions added in
  the 4.20 merge window.

   1) Fix 10G SFP phy module detection in mvpp2, from Baruch Siach.

   2) Revert bogus emac driver change, from Benjamin Herrenschmidt.

   3) Handle BPF exported data structure with pointers when building
      32-bit userland, from Daniel Borkmann.

   4) Memory leak fix in act_police, from Davide Caratti.

   5) Check RX checksum offload in RX descriptors properly in aquantia
      driver, from Dmitry Bogdanov.

   6) SKB unlink fix in various spots, from Edward Cree.

   7) ndo_dflt_fdb_dump() only works with ethernet, enforce this, from
      Eric Dumazet.

   8) Fix FID leak in mlxsw driver, from Ido Schimmel.

   9) IOTLB locking fix in vhost, from Jean-Philippe Brucker.

  10) Fix SKB truesize accounting in ipv4/ipv6/netfilter frag memory
      limits otherwise namespace exit can hang. From Jiri Wiesner.

  11) Address block parsing length fixes in x25 from Martin Schiller.

  12) IRQ and ring accounting fixes in bnxt_en, from Michael Chan.

  13) For tun interfaces, only iface delete works with rtnl ops, enforce
      this by disallowing add. From Nicolas Dichtel.

  14) Use after free in liquidio, from Pan Bian.

  15) Fix SKB use after passing to netif_receive_skb(), from Prashant
      Bhole.

  16) Static key accounting and other fixes in XPS from Sabrina Dubroca.

  17) Partially initialized flow key passed to ip6_route_output(), from
      Shmulik Ladkani.

  18) Fix RTNL deadlock during reset in ibmvnic driver, from Thomas
      Falcon.

  19) Several small TCP fixes (off-by-one on window probe abort, NULL
      deref in tail loss probe, SNMP mis-estimations) from Yuchung
      Cheng"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (93 commits)
  net/sched: cls_flower: Reject duplicated rules also under skip_sw
  bnxt_en: Fix _bnxt_get_max_rings() for 57500 chips.
  bnxt_en: Fix NQ/CP rings accounting on the new 57500 chips.
  bnxt_en: Keep track of reserved IRQs.
  bnxt_en: Fix CNP CoS queue regression.
  net/mlx4_core: Correctly set PFC param if global pause is turned off.
  Revert "net/ibm/emac: wrong bit is used for STA control"
  neighbour: Avoid writing before skb->head in neigh_hh_output()
  ipv6: Check available headroom in ip6_xmit() even without options
  tcp: lack of available data can also cause TSO defer
  ipv6: sr: properly initialize flowi6 prior passing to ip6_route_output
  mlxsw: spectrum_switchdev: Fix VLAN device deletion via ioctl
  mlxsw: spectrum_router: Relax GRE decap matching check
  mlxsw: spectrum_switchdev: Avoid leaking FID's reference count
  mlxsw: spectrum_nve: Remove easily triggerable warnings
  ipv4: ipv6: netfilter: Adjust the frag mem limit when truesize changes
  sctp: frag_point sanity check
  tcp: fix NULL ref in tail loss probe
  tcp: Do not underestimate rwnd_limited
  net: use skb_list_del_init() to remove from RX sublists
  ...
2018-12-09 15:12:33 -08:00
Linus Torvalds
570c9139c3 A few clk driver fixes this time:
- Introduce protected-clock DT binding to fix breakage on qcom sdm845-mtp
    boards where the qspi clks introduced this merge window cause the
    firmware on those boards to take down the system if we try to read
    the clk registers
 
  - Fix a couple off-by-one errors found by Dan Carpenter
 
  - Handle failure in zynq fixed factor clk driver to avoid using
    uninitialized data
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "A few clk driver fixes this time:

   - Introduce protected-clock DT binding to fix breakage on qcom
     sdm845-mtp boards where the qspi clks introduced this merge window
     cause the firmware on those boards to take down the system if we
     try to read the clk registers

   - Fix a couple off-by-one errors found by Dan Carpenter

   - Handle failure in zynq fixed factor clk driver to avoid using
     uninitialized data"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: zynqmp: Off by one in zynqmp_is_valid_clock()
  clk: mmp: Off by one in mmp_clk_add()
  clk: mvebu: Off by one bugs in cp110_of_clk_get()
  arm64: dts: qcom: sdm845-mtp: Mark protected gcc clocks
  clk: qcom: Support 'protected-clocks' property
  dt-bindings: clk: Introduce 'protected-clocks' property
  clk: zynqmp: handle fixed factor param query error
2018-12-08 11:33:26 -08:00
Matthew Wilcox
55f3f7eab7 XArray: Add xa_cmpxchg_irq and xa_cmpxchg_bh
These convenience wrappers match the other _irq and _bh wrappers we
already have.  It turns out I'd already open-coded xa_cmpxchg_irq()
in the shmem code, so convert that.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-12-06 08:26:17 -05:00
Hans Verkuil
cd9fd6f12f media: extended-controls.rst: add note to the MPEG2 state controls
Add a note mentioning that these two controls are not part of the
public API while they still stabilizing.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-12-05 13:07:11 -05:00
Linus Torvalds
adac0753c2 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
 "Mostly new IDs for Elan/Synaptics touchpads, plus a few small fixups"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: omap-keypad - fix keyboard debounce configuration
  Input: xpad - quirk all PDP Xbox One gamepads
  Input: synaptics - enable SMBus for HP 15-ay000
  Input: synaptics - add PNP ID for ThinkPad P50 to SMBus
  Input: elan_i2c - add ACPI ID for Lenovo IdeaPad 330-15ARR
  Input: elan_i2c - add support for ELAN0621 touchpad
  Input: hyper-v - fix wakeup from suspend-to-idle
  Input: atkbd - clean up indentation issue
  Input: st1232 - convert to SPDX identifiers
  Input: migor_ts - convert to SPDX identifiers
  Input: dt-bindings - fix a typo in file input-reset.txt
  Input: cros_ec_keyb - fix button/switch capability reports
  Input: elan_i2c - add ELAN0620 to the ACPI table
  Input: matrix_keypad - check for errors from of_get_named_gpio()
2018-12-04 08:47:04 -08:00
Linus Torvalds
0072a0c14d media fixes for v4.20-rc4
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Merge tag 'media/v4.20-4' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab:

 - Revert a dt-bindings patch whose driver didn't make for 4.20

 - fix a kernel oops at vicodec driver

 - fix a frame overflow at gspca with was causing regressions on some
   cameras, making them to not work

 - use the proper type for wait_queue head

 - make media request API compatible with 32-bit userspace on 64-bit
   kernel

 - fix a regression on Kernel 4.19 at dvb-pll

 - don't use SPDX headers yet for GFDL

* tag 'media/v4.20-4' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  media: mediactl docs: Fix licensing message
  media: dvb-pll: don't re-validate tuner frequencies
  media: dvb-pll: fix tuner frequency ranges
  media: Revert "media: dt-bindings: Document the Rockchip VPU bindings"
  media: gspca: fix frame overflow error
  media: vicodec: fix memchr() kernel oops
  media: cedrus: add action item to the TODO
  media: media-request: Add compat ioctl
  media: Use wait_queue_head_t for media_request
2018-12-03 11:29:20 -08:00
Rafael J. Wysocki
aa5eee355b Documentation: admin-guide: PM: Add cpuidle document
Important information is missing from user/admin cpuidle documentation
available today, so add a new user/admin document for cpuidle containing
current and comprehensive information to admin-guide and drop the old
.txt documents it is replacing.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-12-03 10:03:36 +01:00
Linus Torvalds
4b78317679 Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull STIBP fallout fixes from Thomas Gleixner:
 "The performance destruction department finally got it's act together
  and came up with a cure for the STIPB regression:

   - Provide a command line option to control the spectre v2 user space
     mitigations. Default is either seccomp or prctl (if seccomp is
     disabled in Kconfig). prctl allows mitigation opt-in, seccomp
     enables the migitation for sandboxed processes.

   - Rework the code to handle the conditional STIBP/IBPB control and
     remove the now unused ptrace_may_access_sched() optimization
     attempt

   - Disable STIBP automatically when SMT is disabled

   - Optimize the switch_to() logic to avoid MSR writes and invocations
     of __switch_to_xtra().

   - Make the asynchronous speculation TIF updates synchronous to
     prevent stale mitigation state.

  As a general cleanup this also makes retpoline directly depend on
  compiler support and removes the 'minimal retpoline' option which just
  pretended to provide some form of security while providing none"

* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits)
  x86/speculation: Provide IBPB always command line options
  x86/speculation: Add seccomp Spectre v2 user space protection mode
  x86/speculation: Enable prctl mode for spectre_v2_user
  x86/speculation: Add prctl() control for indirect branch speculation
  x86/speculation: Prepare arch_smt_update() for PRCTL mode
  x86/speculation: Prevent stale SPEC_CTRL msr content
  x86/speculation: Split out TIF update
  ptrace: Remove unused ptrace_may_access_sched() and MODE_IBRS
  x86/speculation: Prepare for conditional IBPB in switch_mm()
  x86/speculation: Avoid __switch_to_xtra() calls
  x86/process: Consolidate and simplify switch_to_xtra() code
  x86/speculation: Prepare for per task indirect branch speculation control
  x86/speculation: Add command line control for indirect branch speculation
  x86/speculation: Unify conditional spectre v2 print functions
  x86/speculataion: Mark command line parser data __initdata
  x86/speculation: Mark string arrays const correctly
  x86/speculation: Reorder the spec_v2 code
  x86/l1tf: Show actual SMT state
  x86/speculation: Rework SMT state change
  sched/smt: Expose sched_smt_present static key
  ...
2018-12-01 12:35:48 -08:00
Linus Torvalds
d8f190ee83 Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
 "31 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (31 commits)
  ocfs2: fix potential use after free
  mm/khugepaged: fix the xas_create_range() error path
  mm/khugepaged: collapse_shmem() do not crash on Compound
  mm/khugepaged: collapse_shmem() without freezing new_page
  mm/khugepaged: minor reorderings in collapse_shmem()
  mm/khugepaged: collapse_shmem() remember to clear holes
  mm/khugepaged: fix crashes due to misaccounted holes
  mm/khugepaged: collapse_shmem() stop if punched or truncated
  mm/huge_memory: fix lockdep complaint on 32-bit i_size_read()
  mm/huge_memory: splitting set mapping+index before unfreeze
  mm/huge_memory: rename freeze_page() to unmap_page()
  initramfs: clean old path before creating a hardlink
  kernel/kcov.c: mark funcs in __sanitizer_cov_trace_pc() as notrace
  psi: make disabling/enabling easier for vendor kernels
  proc: fixup map_files test on arm
  debugobjects: avoid recursive calls with kmemleak
  userfaultfd: shmem: UFFDIO_COPY: set the page dirty if VM_WRITE is not set
  userfaultfd: shmem: add i_size checks
  userfaultfd: shmem/hugetlbfs: only allow to register VM_MAYWRITE vmas
  userfaultfd: shmem: allocate anonymous memory for MAP_PRIVATE shmem
  ...
2018-11-30 18:45:49 -08:00
Linus Torvalds
868dda00b9 - Cortex-A76 erratum workaround
- ftrace fix to enable syscall events on arm64
 
 - Fix uninitialised pointer in iort_get_platform_device_domain()
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:

 - Cortex-A76 erratum workaround

 - ftrace fix to enable syscall events on arm64

 - Fix uninitialised pointer in iort_get_platform_device_domain()

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  ACPI/IORT: Fix iort_get_platform_device_domain() uninitialized pointer value
  arm64: ftrace: Fix to enable syscall events on arm64
  arm64: Add workaround for Cortex-A76 erratum 1286807
2018-11-30 18:39:07 -08:00
Florian Fainelli
a3d7e01da0 net: dsa: Fix tagging attribute location
While introducing the DSA tagging protocol attribute, it was added to the DSA
slave network devices, but those actually see untagged traffic (that is their
whole purpose). Correct this mistake by putting the tagging sysfs attribute
under the DSA master network device where this is the information that we need.

While at it, also correct the sysfs documentation mistake that missed the
"dsa/" directory component of the attribute.

Fixes: 98cdb48071 ("net: dsa: Expose tagging protocol to user-space")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-30 17:17:39 -08:00
Johannes Weiner
e0c274472d psi: make disabling/enabling easier for vendor kernels
Mel Gorman reports a hackbench regression with psi that would prohibit
shipping the suse kernel with it default-enabled, but he'd still like
users to be able to opt in at little to no cost to others.

With the current combination of CONFIG_PSI and the psi_disabled bool set
from the commandline, this is a challenge.  Do the following things to
make it easier:

1. Add a config option CONFIG_PSI_DEFAULT_DISABLED that allows distros
   to enable CONFIG_PSI in their kernel but leave the feature disabled
   unless a user requests it at boot-time.

   To avoid double negatives, rename psi_disabled= to psi=.

2. Make psi_disabled a static branch to eliminate any branch costs
   when the feature is disabled.

In terms of numbers before and after this patch, Mel says:

: The following is a comparision using CONFIG_PSI=n as a baseline against
: your patch and a vanilla kernel
:
:                          4.20.0-rc4             4.20.0-rc4             4.20.0-rc4
:                 kconfigdisable-v1r1                vanilla        psidisable-v1r1
: Amean     1       1.3100 (   0.00%)      1.3923 (  -6.28%)      1.3427 (  -2.49%)
: Amean     3       3.8860 (   0.00%)      4.1230 *  -6.10%*      3.8860 (  -0.00%)
: Amean     5       6.8847 (   0.00%)      8.0390 * -16.77%*      6.7727 (   1.63%)
: Amean     7       9.9310 (   0.00%)     10.8367 *  -9.12%*      9.9910 (  -0.60%)
: Amean     12     16.6577 (   0.00%)     18.2363 *  -9.48%*     17.1083 (  -2.71%)
: Amean     18     26.5133 (   0.00%)     27.8833 *  -5.17%*     25.7663 (   2.82%)
: Amean     24     34.3003 (   0.00%)     34.6830 (  -1.12%)     32.0450 (   6.58%)
: Amean     30     40.0063 (   0.00%)     40.5800 (  -1.43%)     41.5087 (  -3.76%)
: Amean     32     40.1407 (   0.00%)     41.2273 (  -2.71%)     39.9417 (   0.50%)
:
: It's showing that the vanilla kernel takes a hit (as the bisection
: indicated it would) and that disabling PSI by default is reasonably
: close in terms of performance for this particular workload on this
: particular machine so;

Link: http://lkml.kernel.org/r/20181127165329.GA29728@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Tested-by: Mel Gorman <mgorman@techsingularity.net>
Reported-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-11-30 14:56:14 -08:00
Linus Torvalds
40ebba2ad7 USB/PHY driver fixes for 4.20-rc5
Here are some small USB and PHY driver fixes for 4.20-rc5
 
 Nothing big at all, just the usual handful of USB fixes for reported
 issues, along with some gadget and PHY driver bug fixes.
 
 All of these have been in linux-next with no reported issues.
 Note, the USB gadget fixes were in linux-next on its own branch, not in
 mine, it just got merged into here yesterday and missed linux-next of
 today.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.20-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB/PHY driver fixes from Greg KH:
 "Here are some small USB and PHY driver fixes for 4.20-rc5

  Nothing big at all, just the usual handful of USB fixes for reported
  issues, along with some gadget and PHY driver bug fixes.

  All of these have been in linux-next with no reported issues. Note,
  the USB gadget fixes were in linux-next on its own branch, not in
  mine, it just got merged into here yesterday and missed linux-next of
  today"

* tag 'usb-4.20-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: gadget: u_ether: fix unsafe list iteration
  USB: omap_udc: fix rejection of out transfers when DMA is used
  USB: omap_udc: fix USB gadget functionality on Palm Tungsten E
  USB: omap_udc: fix omap_udc_start() on 15xx machines
  USB: omap_udc: fix crashes on probe error and module removal
  USB: omap_udc: use devm_request_irq()
  usb: core: quirks: add RESET_RESUME quirk for Cherry G230 Stream series
  USB: usb-storage: Add new IDs to ums-realtek
  Revert "usb: dwc3: gadget: skip Set/Clear Halt when invalid"
  phy: qcom-qusb2: Fix HSTX_TRIM tuning with fused value for SDM845
  phy: qcom-qusb2: Use HSTX_TRIM fused value as is
  dt-bindings: phy-qcom-qmp: Fix several mistakes from prior commits
  phy: uniphier-pcie: Depend on HAS_IOMEM
2018-11-30 12:20:48 -08:00
Linus Torvalds
1ec63573b2 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
 "Misc fixes:

   - MCE related boot crash fix on certain AMD systems

   - FPU exception handling fix

   - FPU handling race fix

   - revert+rewrite of the RSDP boot protocol extension, use boot_params
     instead

   - documentation fix"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/MCE/AMD: Fix the thresholding machinery initialization order
  x86/fpu: Use the correct exception table macro in the XSTATE_OP wrapper
  x86/fpu: Disable bottom halves while loading FPU registers
  x86/acpi, x86/boot: Take RSDP address from boot params if available
  x86/boot: Mostly revert commit ae7e1238e6 ("Add ACPI RSDP address to setup_header")
  x86/ptrace: Fix documentation for tracehook_report_syscall_entry()
2018-11-30 11:34:25 -08:00
Linus Torvalds
a1b3cf6d94 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
 "Misc fixes:

   - counter freezing related regression fix

   - uprobes race fix

   - Intel PMU unusual event combination fix

   - .. and diverse tooling fixes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  uprobes: Fix handle_swbp() vs. unregister() + register() race once more
  perf/x86/intel: Disallow precise_ip on BTS events
  perf/x86/intel: Add generic branch tracing check to intel_pmu_has_bts()
  perf/x86/intel: Move branch tracing setup to the Intel-specific source file
  perf/x86/intel: Fix regression by default disabling perfmon v4 interrupt handling
  perf tools beauty ioctl: Support new ISO7816 commands
  tools uapi asm-generic: Synchronize ioctls.h
  tools arch x86: Update tools's copy of cpufeatures.h
  tools headers uapi: Synchronize i915_drm.h
  perf tools: Restore proper cwd on return from mnt namespace
  tools build feature: Check if get_current_dir_name() is available
  perf tools: Fix crash on synthesizing the unit
2018-11-30 11:31:48 -08:00
Srinivas Pandruvada
60935c17e2 Documentation: intel_pstate: Clarify coordination of P-State limits
Explain influence of per-core P-states and hyper threading on the
effective performance.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-11-29 22:31:58 +01:00
Catalin Marinas
ce8c80c536 arm64: Add workaround for Cortex-A76 erratum 1286807
On the affected Cortex-A76 cores (r0p0 to r3p0), if a virtual address
for a cacheable mapping of a location is being accessed by a core while
another core is remapping the virtual address to a new physical page
using the recommended break-before-make sequence, then under very rare
circumstances TLBI+DSB completes before a read using the translation
being invalidated has been observed by other observers. The workaround
repeats the TLBI+DSB operation and is shared with the Qualcomm Falkor
erratum 1009

Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2018-11-29 16:45:45 +00:00
Linus Torvalds
5b26f7180c spi: Fixes for v4.20
A few driver specific fixes here, nothing big or that stands out for
 anyone other than the driver users.
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Merge tag 'spi-fix-v4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "A few driver specific fixes here, nothing big or that stands out for
  anyone other than the driver users.

  The omap2-mcspi fix is for issues that started showing up with a
  change in defconfig in this release to make cpuidle get turned on by
  default"

* tag 'spi-fix-v4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: omap2-mcspi: Add missing suspend and resume calls
  spi: mediatek: use correct mata->xfer_len when in fifo transfer
  spi: uniphier: fix incorrect property items
2018-11-28 08:33:55 -08:00
Thomas Gleixner
55a974021e x86/speculation: Provide IBPB always command line options
Provide the possibility to enable IBPB always in combination with 'prctl'
and 'seccomp'.

Add the extra command line options and rework the IBPB selection to
evaluate the command instead of the mode selected by the STIPB switch case.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Casey Schaufler <casey.schaufler@intel.com>
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jon Masters <jcm@redhat.com>
Cc: Waiman Long <longman9394@gmail.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Dave Stewart <david.c.stewart@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20181125185006.144047038@linutronix.de
2018-11-28 11:57:14 +01:00
Thomas Gleixner
6b3e64c237 x86/speculation: Add seccomp Spectre v2 user space protection mode
If 'prctl' mode of user space protection from spectre v2 is selected
on the kernel command-line, STIBP and IBPB are applied on tasks which
restrict their indirect branch speculation via prctl.

SECCOMP enables the SSBD mitigation for sandboxed tasks already, so it
makes sense to prevent spectre v2 user space to user space attacks as
well.

The Intel mitigation guide documents how STIPB works:
    
   Setting bit 1 (STIBP) of the IA32_SPEC_CTRL MSR on a logical processor
   prevents the predicted targets of indirect branches on any logical
   processor of that core from being controlled by software that executes
   (or executed previously) on another logical processor of the same core.

Ergo setting STIBP protects the task itself from being attacked from a task
running on a different hyper-thread and protects the tasks running on
different hyper-threads from being attacked.

While the document suggests that the branch predictors are shielded between
the logical processors, the observed performance regressions suggest that
STIBP simply disables the branch predictor more or less completely. Of
course the document wording is vague, but the fact that there is also no
requirement for issuing IBPB when STIBP is used points clearly in that
direction. The kernel still issues IBPB even when STIBP is used until Intel
clarifies the whole mechanism.

IBPB is issued when the task switches out, so malicious sandbox code cannot
mistrain the branch predictor for the next user space task on the same
logical processor.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Casey Schaufler <casey.schaufler@intel.com>
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jon Masters <jcm@redhat.com>
Cc: Waiman Long <longman9394@gmail.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Dave Stewart <david.c.stewart@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20181125185006.051663132@linutronix.de
2018-11-28 11:57:14 +01:00
Thomas Gleixner
7cc765a67d x86/speculation: Enable prctl mode for spectre_v2_user
Now that all prerequisites are in place:

 - Add the prctl command line option

 - Default the 'auto' mode to 'prctl'

 - When SMT state changes, update the static key which controls the
   conditional STIBP evaluation on context switch.

 - At init update the static key which controls the conditional IBPB
   evaluation on context switch.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Casey Schaufler <casey.schaufler@intel.com>
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jon Masters <jcm@redhat.com>
Cc: Waiman Long <longman9394@gmail.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Dave Stewart <david.c.stewart@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20181125185005.958421388@linutronix.de
2018-11-28 11:57:13 +01:00
Thomas Gleixner
9137bb27e6 x86/speculation: Add prctl() control for indirect branch speculation
Add the PR_SPEC_INDIRECT_BRANCH option for the PR_GET_SPECULATION_CTRL and
PR_SET_SPECULATION_CTRL prctls to allow fine grained per task control of
indirect branch speculation via STIBP and IBPB.

Invocations:
 Check indirect branch speculation status with
 - prctl(PR_GET_SPECULATION_CTRL, PR_SPEC_INDIRECT_BRANCH, 0, 0, 0);

 Enable indirect branch speculation with
 - prctl(PR_SET_SPECULATION_CTRL, PR_SPEC_INDIRECT_BRANCH, PR_SPEC_ENABLE, 0, 0);

 Disable indirect branch speculation with
 - prctl(PR_SET_SPECULATION_CTRL, PR_SPEC_INDIRECT_BRANCH, PR_SPEC_DISABLE, 0, 0);

 Force disable indirect branch speculation with
 - prctl(PR_SET_SPECULATION_CTRL, PR_SPEC_INDIRECT_BRANCH, PR_SPEC_FORCE_DISABLE, 0, 0);

See Documentation/userspace-api/spec_ctrl.rst.

Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Casey Schaufler <casey.schaufler@intel.com>
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jon Masters <jcm@redhat.com>
Cc: Waiman Long <longman9394@gmail.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Dave Stewart <david.c.stewart@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20181125185005.866780996@linutronix.de
2018-11-28 11:57:13 +01:00
Thomas Gleixner
fa1202ef22 x86/speculation: Add command line control for indirect branch speculation
Add command line control for user space indirect branch speculation
mitigations. The new option is: spectre_v2_user=

The initial options are:

    -  on:   Unconditionally enabled
    - off:   Unconditionally disabled
    -auto:   Kernel selects mitigation (default off for now)

When the spectre_v2= command line argument is either 'on' or 'off' this
implies that the application to application control follows that state even
if a contradicting spectre_v2_user= argument is supplied.

Originally-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Casey Schaufler <casey.schaufler@intel.com>
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jon Masters <jcm@redhat.com>
Cc: Waiman Long <longman9394@gmail.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Dave Stewart <david.c.stewart@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20181125185005.082720373@linutronix.de
2018-11-28 11:57:10 +01:00
Mauro Carvalho Chehab
a7c3a0d5f8 media: mediactl docs: Fix licensing message
Right now, it mentions two SPDX headers that don't exist inside the Kernel:
	GFDL-1.1-or-later
And an exception:
	no-invariant-sections

While it would be trivial to add the first one, there's no way,
currently, to distinguish, with SPDX, between a free and a non-free
document under GFDL.

Free documents with GFDL should not have invariant sections.

There's an open issue at SPDX tree waiting for it to be solved.
While we don't have this issue closed, let's just replace by a
free-text license, and add a TODO note to remind us to revisit it
later.

Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-11-27 13:52:46 -05:00
Greg Kroah-Hartman
1dbcd8d42c phy: for 4.20-rc
*) Fix updating HSTX_TRIM tuning parameter in qcom-qusb2 PHY driver
  *) Fix inconsistencies between dt-bindings and the driver
  *) Add "Depend on HAS_IOMEM" uniphier-pcie to avoid randconfig errors
 
 Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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Merge tag 'phy-for-4.20-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy into usb-linus

Kishon writes:

phy: for 4.20-rc

 *) Fix updating HSTX_TRIM tuning parameter in qcom-qusb2 PHY driver
 *) Fix inconsistencies between dt-bindings and the driver
 *) Add "Depend on HAS_IOMEM" uniphier-pcie to avoid randconfig errors

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

* tag 'phy-for-4.20-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy:
  phy: qcom-qusb2: Fix HSTX_TRIM tuning with fused value for SDM845
  phy: qcom-qusb2: Use HSTX_TRIM fused value as is
  dt-bindings: phy-qcom-qmp: Fix several mistakes from prior commits
  phy: uniphier-pcie: Depend on HAS_IOMEM
2018-11-26 08:08:01 +01:00
Linus Torvalds
e2125dac22 XArray updates for 4.20-rc4
We found some bugs in the DAX conversion to XArray (and one bug which
 predated the XArray conversion).  There were a couple of bugs in some of
 the higher-level functions, which aren't actually being called in today's
 kernel, but surfaced as a result of converting existing radix tree &
 IDR users over to the XArray.  Some of the other changes to how the
 higher-level APIs work were also motivated by converting various users;
 again, they're not in use in today's kernel, so changing them has a low
 probability of introducing a bug.
 
 Dan can still trigger a bug in the DAX code with hot-offline/online,
 and we're working on tracking that down.
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Merge tag 'xarray-4.20-rc4' of git://git.infradead.org/users/willy/linux-dax

Pull XArray updates from Matthew Wilcox:
 "We found some bugs in the DAX conversion to XArray (and one bug which
  predated the XArray conversion). There were a couple of bugs in some
  of the higher-level functions, which aren't actually being called in
  today's kernel, but surfaced as a result of converting existing radix
  tree & IDR users over to the XArray.

  Some of the other changes to how the higher-level APIs work were also
  motivated by converting various users; again, they're not in use in
  today's kernel, so changing them has a low probability of introducing
  a bug.

  Dan can still trigger a bug in the DAX code with hot-offline/online,
  and we're working on tracking that down"

* tag 'xarray-4.20-rc4' of git://git.infradead.org/users/willy/linux-dax:
  XArray tests: Add missing locking
  dax: Avoid losing wakeup in dax_lock_mapping_entry
  dax: Fix huge page faults
  dax: Fix dax_unlock_mapping_entry for PMD pages
  dax: Reinstate RCU protection of inode
  dax: Make sure the unlocking entry isn't locked
  dax: Remove optimisation from dax_lock_mapping_entry
  XArray tests: Correct some 64-bit assumptions
  XArray: Correct xa_store_range
  XArray: Fix Documentation
  XArray: Handle NULL pointers differently for allocation
  XArray: Unify xa_store and __xa_store
  XArray: Add xa_store_bh() and xa_store_irq()
  XArray: Turn xa_erase into an exported function
  XArray: Unify xa_cmpxchg and __xa_cmpxchg
  XArray: Regularise xa_reserve
  nilfs2: Use xa_erase_irq
  XArray: Export __xa_foo to non-GPL modules
  XArray: Fix xa_for_each with a single element at 0
2018-11-24 18:44:01 -08:00
Linus Torvalds
e195ca6cb6 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID fixes from Jiri Kosina:

 - revert of the high-resolution scrolling feature, as it breaks certain
   hardware due to incompatibilities between Logitech and Microsoft
   worlds. Peter Hutterer is working on a fixed implementation. Until
   that is finished, revert by Benjamin Tissoires.

 - revert of incorrect strncpy->strlcpy conversion in uhid, from David
   Herrmann

 - fix for buggy sendfile() implementation on uhid device node, from
   Eric Biggers

 - a few assorted device-ID specific quirks

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
  Revert "Input: Add the `REL_WHEEL_HI_RES` event code"
  Revert "HID: input: Create a utility class for counting scroll events"
  Revert "HID: logitech: Add function to enable HID++ 1.0 "scrolling acceleration""
  Revert "HID: logitech: Enable high-resolution scrolling on Logitech mice"
  Revert "HID: logitech: Use LDJ_DEVICE macro for existing Logitech mice"
  Revert "HID: logitech: fix a used uninitialized GCC warning"
  Revert "HID: input: simplify/fix high-res scroll event handling"
  HID: Add quirk for Primax PIXART OEM mice
  HID: i2c-hid: Disable runtime PM for LG touchscreen
  HID: multitouch: Add pointstick support for Cirque Touchpad
  HID: steam: remove input device when a hid client is running.
  Revert "HID: uhid: use strlcpy() instead of strncpy()"
  HID: uhid: forbid UHID_CREATE under KERNEL_DS or elevated privileges
  HID: input: Ignore battery reported by Symbol DS4308
  HID: Add quirk for Microsoft PIXART OEM mouse
2018-11-24 12:58:47 -08:00
Linus Torvalds
857fa628bb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Need to take mutex in ath9k_add_interface(), from Dan Carpenter.

 2) Fix mt76 build without CONFIG_LEDS_CLASS, from Arnd Bergmann.

 3) Fix socket wmem accounting in SCTP, from Xin Long.

 4) Fix failed resume crash in ena driver, from Arthur Kiyanovski.

 5) qed driver passes bytes instead of bits into second arg of
    bitmap_weight(). From Denis Bolotin.

 6) Fix reset deadlock in ibmvnic, from Juliet Kim.

 7) skb_scrube_packet() needs to scrub the fwd marks too, from Petr
    Machata.

 8) Make sure older TCP stacks see enough dup ACKs, and avoid doing SACK
    compression during this period, from Eric Dumazet.

 9) Add atomicity to SMC protocol cursor handling, from Ursula Braun.

10) Don't leave dangling error pointer if bpf_prog_add() fails in
    thunderx driver, from Lorenzo Bianconi. Also, when we unmap TSO
    headers, set sq->tso_hdrs to NULL.

11) Fix race condition over state variables in act_police, from Davide
    Caratti.

12) Disable guest csum in the presence of XDP in virtio_net, from Jason
    Wang.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (64 commits)
  net: gemini: Fix copy/paste error
  net: phy: mscc: fix deadlock in vsc85xx_default_config
  dt-bindings: dsa: Fix typo in "probed"
  net: thunderx: set tso_hdrs pointer to NULL in nicvf_free_snd_queue
  net: amd: add missing of_node_put()
  team: no need to do team_notify_peers or team_mcast_rejoin when disabling port
  virtio-net: fail XDP set if guest csum is negotiated
  virtio-net: disable guest csum during XDP set
  net/sched: act_police: add missing spinlock initialization
  net: don't keep lonely packets forever in the gro hash
  net/ipv6: re-do dad when interface has IFF_NOARP flag change
  packet: copy user buffers before orphan or clone
  ibmvnic: Update driver queues after change in ring size support
  ibmvnic: Fix RX queue buffer cleanup
  net: thunderx: set xdp_prog to NULL if bpf_prog_add fails
  net/dim: Update DIM start sample after each DIM iteration
  net: faraday: ftmac100: remove netif_running(netdev) check before disabling interrupts
  net/smc: use after free fix in smc_wr_tx_put_slot()
  net/smc: atomic SMCD cursor handling
  net/smc: add SMC-D shutdown signal
  ...
2018-11-24 09:19:38 -08:00
Fabio Estevam
e7b9fb4f54 dt-bindings: dsa: Fix typo in "probed"
The correct form is "can be probed", so fix the typo.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-23 22:33:55 -08:00
Ezequiel Garcia
ea2fc76971 media: Revert "media: dt-bindings: Document the Rockchip VPU bindings"
This reverts commit e4183d3256.

The commit was picked by mistake, as the Rockchip VPU driver
is not ready for inclusion yet, and it's still under discussion.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-11-22 13:45:55 -05:00
Linus Torvalds
52465bce85 Char/Misc driver fixes for 4.20-rc4
Here are some small char/misc driver fixes for issues that have been
 reported.
 
 Nothing major, highlights include:
 	- gnss sync write fixes
 	- uio oops fix
 	- nvmem fixes
 	- other minor fixes and some documentation/maintainers updates
 
 Full details are in the shortlog.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are some small char/misc driver fixes for issues that have been
  reported.

  Nothing major, highlights include:

   - gnss sync write fixes

   - uio oops fix

   - nvmem fixes

   - other minor fixes and some documentation/maintainers updates

  Full details are in the shortlog.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  Documentation/security-bugs: Postpone fix publication in exceptional cases
  MAINTAINERS: Add Sasha as a stable branch maintainer
  gnss: sirf: fix synchronous write timeout
  gnss: serial: fix synchronous write timeout
  uio: Fix an Oops on load
  test_firmware: fix error return getting clobbered
  nvmem: core: fix regression in of_nvmem_cell_get()
  misc: atmel-ssc: Fix section annotation on atmel_ssc_get_driver_data
  drivers/misc/sgi-gru: fix Spectre v1 vulnerability
  Drivers: hv: kvp: Fix the recent regression caused by incorrect clean-up
  slimbus: ngd: remove unnecessary check
2018-11-22 08:43:06 -08:00
Linus Torvalds
4cd731953d USB fixes for 4.20-rc4
Here are a number of small USB fixes for 4.20-rc4.
 
 There's the usual xhci and dwc2/3 fixes as well as a few minor other
 issues resolved for problems that have been reported.  Full details are
 in the shortlog.
 
 All have been in linux-next for a while with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are a number of small USB fixes for 4.20-rc4.

  There's the usual xhci and dwc2/3 fixes as well as a few minor other
  issues resolved for problems that have been reported. Full details are
  in the shortlog.

  All have been in linux-next for a while with no reported issues"

* tag 'usb-4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: cdc-acm: add entry for Hiro (Conexant) modem
  usb: xhci: Prevent bus suspend if a port connect change or polling state is detected
  usb: core: Fix hub port connection events lost
  usb: dwc3: gadget: fix ISOC TRB type on unaligned transfers
  Revert "usb: gadget: ffs: Fix BUG when userland exits with submitted AIO transfers"
  usb: dwc2: pci: Fix an error code in probe
  usb: dwc3: Fix NULL pointer exception in dwc3_pci_remove()
  xhci: Add quirk to workaround the errata seen on Cavium Thunder-X2 Soc
  usb: xhci: fix timeout for transition from RExit to U0
  usb: xhci: fix uninitialized completion when USB3 port got wrong status
  xhci: Add check for invalid byte size error when UAS devices are connected.
  xhci: handle port status events for removed USB3 hcd
  xhci: Fix leaking USB3 shared_hcd at xhci removal
  USB: misc: appledisplay: add 20" Apple Cinema Display
  USB: quirks: Add no-lpm quirk for Raydium touchscreens
  usb: quirks: Add delay-init quirk for Corsair K70 LUX RGB
  USB: Wait for extra delay time after USB_PORT_FEAT_RESET for quirky hub
  usb: dwc3: gadget: Properly check last unaligned/zero chain TRB
  usb: dwc3: core: Clean up ULPI device
2018-11-22 08:39:29 -08:00
Benjamin Tissoires
ffe0e7cf29 Revert "Input: Add the REL_WHEEL_HI_RES event code"
This reverts commit aaf9978c3c.

Quoting Peter:

There is a HID feature report called "Resolution Multiplier"
Described in the "Enhanced Wheel Support in Windows" doc and
the "USB HID Usage Tables" page 30.

http://download.microsoft.com/download/b/d/1/bd1f7ef4-7d72-419e-bc5c-9f79ad7bb66e/wheel.docx
https://www.usb.org/sites/default/files/documents/hut1_12v2.pdf

This was new for Windows Vista, so we're only a decade behind here. I only
accidentally found this a few days ago while debugging a stuck button on a
Microsoft mouse.

The docs above describe it like this: a wheel control by default sends
value 1 per notch. If the resolution multiplier is active, the wheel is
expected to send a value of $multiplier per notch (e.g. MS Sculpt mouse) or
just send events more often, i.e. for less physical motion (e.g. MS Comfort
mouse).

For the latter, you need the right HW of course. The Sculpt mouse has
tactile wheel clicks, so nothing really changes. The Comfort mouse has
continuous motion with no tactile clicks. Similar to the free-wheeling
Logitech mice but without any inertia.

Note that the doc also says that Vista and onwards *always* enable this
feature where available.

An example HID definition looks like this:

       Usage Page Generic Desktop (0x01)
       Usage Resolution Multiplier (0x48)
       Logical Minimum 0
       Logical Maximum 1
       Physical Minimum 1
       Physical Maximum 16
       Report Size 2 # in bits
       Report Count 1
       Feature (Data, Var, Abs)

So the actual bits have values 0 or 1 and that reflects real values 1 or 16.
We've only seen single-bits so far, so there's low-res and hi-res, but
nothing in between.

The multiplier is available for HID usages "Wheel" and "AC Pan" (horiz wheel).
Microsoft suggests that

> Vendors should ship their devices with smooth scrolling disabled and allow
> Windows to enable it. This ensures that the device works like a regular HID
> device on legacy operating systems that do not support smooth scrolling.
(see the wheel doc linked above)

The mice that we tested so far do reset on unplug.

Device Support looks to be all (?) Microsoft mice but nothing else

Not supported:
- Logitech G500s, G303
- Roccat Kone XTD
- all the cheap Lenovo, HP, Dell, Logitech USB mice that come with a
  workstation that I could find don't have it.
- Etekcity something something
- Razer Imperator

Supported:
- Microsoft Comfort Optical Mouse 3000 - yes, physical: 1:4
- Microsoft Sculpt Ergonomic Mouse - yes, physical: 1:12
- Microsoft Surface mouse - yes, physical: 1:4

So again, I think this is really just available on Microsoft mice, but
probably all decent MS mice released over the last decade.

Looking at the hardware itself:

- no noticeable notches in the weel
- low-res: 18 events per 360deg rotation (click angle 20 deg)
- high-res: 72 events per 360deg → matches multiplier of 4

- I can feel the notches during wheel turns
- low-res: 24 events per 360 deg rotation (click angle 15 deg)
  - horiz wheel is tilt-based, continuous output value 1
- high-res: 24 events per 360deg with value 12 → matches multiplier of 12
  - horiz wheel output rate doubles/triples?, values is 3

- It's a touch strip, not a wheel so no notches
- high-res: events have value 4 instead of 1
  a bit strange given that it doesn't actually have notches.

Ok, why is this an issue for the current API? First, because the logitech
multiplier used in Harry's patches looks suspiciously like the Resolution
Multiplier so I think we should assume it's the same thing. Nestor, can you
shed some light on that?

- `REL_WHEEL` is defined as the number of notches, emulated where needed.
- `REL_WHEEL_HI_RES` is the movement of the user's finger in microns.
- `WM_MOUSEWHEEL` (Windows) is is a multiple of 120, defined as "the threshold
  for action to be taken and one such action"
  https://docs.microsoft.com/en-us/windows/desktop/inputdev/wm-mousewheel

If the multiplier is set to M, this means we need an accumulated value of M
until we can claim there was a wheel click. So after enabling the multiplier
and setting it to the maximum (like Windows):
- M units are 15deg rotation → 1 unit is 2620/M micron (see below). This is
  the `REL_WHEEL_HI_RES` value.
  - wheel diameter 20mm: 15 deg rotation is 2.62mm, 2620 micron (pi * 20mm /
    (360deg/15deg))
- For every M units accumulated, send one `REL_WHEEL` event

The problem here is that we've now hardcoded 20mm/15 deg into the kernel and
we have no way of getting the size of the wheel or the click angle into the
kernel.

In userspace we now have to undo the kernel's calculation. If our click angle
is e.g. 20 degree we have to undo the (lossy) calculation from the kernel and
calculate the correct angle instead. This also means the 15 is a hardcoded
option forever and cannot be changed.

In hid-logitech-hidpp.c, the microns per unit is hardcoded per device.
Harry, did you measure those by hand? We'd need to update the kernel for
every device and there are 10 years worth of devices from MS alone.

The multiplier default is 8 which is in the right ballpark, so I'm pretty
sure this is the same as the Resolution Multiplier, just in HID++ lingo. And
given that the 120 magic factor is what Windows uses in the end, I can't
imagine Logitech rolling their own thing here. Nestor?

And we're already fairly inaccurate with the microns anyway. The MX Anywhere
2S has a click angle of 20 degrees (18 stops) and a 17mm wheel, so a wheel
notch is approximately 2.67mm, one event at multiplier 8 (1/8 of a notch)
would be 334 micron. That's only 80% of the fallback value of 406 in the
kernel. Multiplier 6 gives us 445micron (10% off). I'm assuming multiplier 7
doesn't exist because it's not a factor of 120.

Summary:

Best option may be to simply do what Windows is doing, all the HW manufacturers
have to use that approach after all. Switch `REL_WHEEL_HI_RES` to report in
fractions of 120, with 120 being one notch and divide that by the multiplier
for the actual events. So e.g. the Logitech multiplier 8 would send value 15
for each event in hi-res mode. This can be converted in userspace to
whatever userspace needs (combined with a hwdb there that tells you wheel
size/click angle/...).

Conflicts:
	include/uapi/linux/input-event-codes.h -> I kept the new
         reserved event in the code, so I had to adapt the revert
         slightly

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Harry Cutts <hcutts@chromium.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Jiri Kosina <jkosina@suse.cz>
2018-11-22 08:57:44 +01:00
Stephen Boyd
48d7f160b1 dt-bindings: clk: Introduce 'protected-clocks' property
Add a generic clk property for clks which are not intended to be used by
the OS due to security restrictions put in place by firmware. For
example, on some Qualcomm firmwares reading or writing certain clk
registers causes the entire system to reboot, but on other firmwares
reading and writing those same registers is required to make devices
like QSPI work. Rather than adding one-off properties each time a new
set of clks appears to be protected, let's add a generic clk property to
describe any set of clks that shouldn't be touched by the OS. This way
we never need to register the clks or use them in certain firmware
configurations.

Cc: Rob Herring <robh+dt@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Taniya Das <tdas@codeaurora.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-11-21 00:58:35 -08:00
Peter Zijlstra
2a5bf23d5b perf/x86/intel: Fix regression by default disabling perfmon v4 interrupt handling
Kyle Huey reported that 'rr', a replay debugger, broke due to the following commit:

  af3bdb991a ("perf/x86/intel: Add a separate Arch Perfmon v4 PMI handler")

Rework the 'disable_counter_freezing' __setup() parameter such that we
can explicitly enable/disable it and switch to default disabled.

To this purpose, rename the parameter to "perf_v4_pmi=" which is a much
better description and allows requiring a bool argument.

[ mingo: Improved the changelog some more. ]

Reported-by: Kyle Huey <me@kylehuey.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert O'Callahan <robert@ocallahan.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: acme@kernel.org
Link: http://lkml.kernel.org/r/20181120170842.GZ2131@hirez.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-11-20 18:57:48 +01:00
Will Deacon
544b03da39 Documentation/security-bugs: Postpone fix publication in exceptional cases
At the request of the reporter, the Linux kernel security team offers to
postpone the publishing of a fix for up to 5 business days from the date
of a report.

While it is generally undesirable to keep a fix private after it has
been developed, this short window is intended to allow distributions to
package the fix into their kernel builds and permits early inclusion of
the security team in the case of a co-ordinated disclosure with other
parties. Unfortunately, discussions with major Linux distributions and
cloud providers has revealed that 5 business days is not sufficient to
achieve either of these two goals.

As an example, cloud providers need to roll out KVM security fixes to a
global fleet of hosts with sufficient early ramp-up and monitoring. An
end-to-end timeline of less than two weeks dramatically cuts into the
amount of early validation and increases the chance of guest-visible
regressions.

The consequence of this timeline mismatch is that security issues are
commonly fixed without the involvement of the Linux kernel security team
and are instead analysed and addressed by an ad-hoc group of developers
across companies contributing to Linux. In some cases, mainline (and
therefore the official stable kernels) can be left to languish for
extended periods of time. This undermines the Linux kernel security
process and puts upstream developers in a difficult position should they
find themselves involved with an undisclosed security problem that they
are unable to report due to restrictions from their employer.

To accommodate the needs of these users of the Linux kernel and
encourage them to engage with the Linux security team when security
issues are first uncovered, extend the maximum period for which fixes
may be delayed to 7 calendar days, or 14 calendar days in exceptional
cases, where the logistics of QA and large scale rollouts specifically
need to be accommodated. This brings parity with the linux-distros@
maximum embargo period of 14 calendar days.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Amit Shah <aams@amazon.com>
Cc: Laura Abbott <labbott@redhat.com>
Acked-by: Kees Cook <keescook@chromium.org>
Co-developed-by: Thomas Gleixner <tglx@linutronix.de>
Co-developed-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Tyler Hicks <tyhicks@canonical.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-11-20 18:02:45 +01:00
Linus Torvalds
06e68fed32 media fixes for v4.20-rc4
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Merge tag 'media/v4.20-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab:

 - add a missing include at v4l2-controls uAPI header

 - minor kAPI update for the request API

 - some fixes at CEC core

 - use a lower minimum height for the virtual codec driver

 - cleanup a gcc warning due to the lack of a fall though markup

 - tc358743: Remove unnecessary self assignment

 - fix the V4L event subscription logic

 - docs: Document metadata format in struct v4l2_format

 - omap3isp and ipu3-cio2: fix unbinding logic

* tag 'media/v4.20-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  media: ipu3-cio2: Use cio2_queues_exit
  media: ipu3-cio2: Unregister device nodes first, then release resources
  media: omap3isp: Unregister media device as first
  media: docs: Document metadata format in struct v4l2_format
  media: v4l: event: Add subscription to list before calling "add" operation
  media: dm365_ipipeif: better annotate a fall though
  media: Rename vb2_m2m_request_queue -> v4l2_m2m_request_queue
  media: cec: increase debug level for 'queue full'
  media: cec: check for non-OK/NACK conditions while claiming a LA
  media: vicodec: lower minimum height to 360
  media: tc358743: Remove unnecessary self assignment
  media: v4l: fix uapi mpeg slice params definition
  v4l2-controls: add a missing include
2018-11-20 07:37:15 -08:00
Juergen Gross
3841840449 x86/boot: Mostly revert commit ae7e1238e6 ("Add ACPI RSDP address to setup_header")
Peter Anvin pointed out that commit:

  ae7e1238e6 ("x86/boot: Add ACPI RSDP address to setup_header")

should be reverted as setup_header should only contain items set by the
legacy BIOS.

So revert said commit. Instead of fully reverting the dependent commit
of:

  e7b66d16fe ("x86/acpi, x86/boot: Take RSDP address for boot params if available")

just remove the setup_header reference in order to replace it by
a boot_params in a followup patch.

Suggested-by: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: boris.ostrovsky@oracle.com
Cc: bp@alien8.de
Cc: daniel.kiper@oracle.com
Cc: sstabellini@kernel.org
Cc: xen-devel@lists.xenproject.org
Link: http://lkml.kernel.org/r/20181120072529.5489-2-jgross@suse.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-11-20 09:43:10 +01:00
Linus Torvalds
f2ce1065e7 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Fix some potentially uninitialized variables and use-after-free in
    kvaser_usb can drier, from Jimmy Assarsson.

 2) Fix leaks in qed driver, from Denis Bolotin.

 3) Socket leak in l2tp, from Xin Long.

 4) RSS context allocation fix in bnxt_en from Michael Chan.

 5) Fix cxgb4 build errors, from Ganesh Goudar.

 6) Route leaks in ipv6 when removing exceptions, from Xin Long.

 7) Memory leak in IDR allocation handling of act_pedit, from Davide
    Caratti.

 8) Use-after-free of bridge vlan stats, from Nikolay Aleksandrov.

 9) When MTU is locked, do not force DF bit on ipv4 tunnels. From
    Sabrina Dubroca.

10) When NAPI cached skb is reused, we must set it to the proper initial
    state which includes skb->pkt_type. From Eric Dumazet.

11) Lockdep and non-linear SKB handling fix in tipc from Jon Maloy.

12) Set RX queue properly in various tuntap receive paths, from Matthew
    Cover.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (61 commits)
  tuntap: fix multiqueue rx
  ipv6: Fix PMTU updates for UDP/raw sockets in presence of VRF
  tipc: don't assume linear buffer when reading ancillary data
  tipc: fix lockdep warning when reinitilaizing sockets
  net-gro: reset skb->pkt_type in napi_reuse_skb()
  tc-testing: tdc.py: Guard against lack of returncode in executed command
  tc-testing: tdc.py: ignore errors when decoding stdout/stderr
  ip_tunnel: don't force DF when MTU is locked
  MAINTAINERS: Add entry for CAKE qdisc
  net: bridge: fix vlan stats use-after-free on destruction
  socket: do a generic_file_splice_read when proto_ops has no splice_read
  net: phy: mdio-gpio: Fix working over slow can_sleep GPIOs
  Revert "net: phy: mdio-gpio: Fix working over slow can_sleep GPIOs"
  net: phy: mdio-gpio: Fix working over slow can_sleep GPIOs
  net/sched: act_pedit: fix memory leak when IDR allocation fails
  net: lantiq: Fix returned value in case of error in 'xrx200_probe()'
  ipv6: fix a dst leak when removing its exception
  net: mvneta: Don't advertise 2.5G modes
  drivers/net/ethernet/qlogic/qed/qed_rdma.h: fix typo
  net/mlx4: Fix UBSAN warning of signed integer overflow
  ...
2018-11-19 09:24:04 -08:00
David Howells
7150ceaacb rxrpc: Fix life check
The life-checking function, which is used by kAFS to make sure that a call
is still live in the event of a pending signal, only samples the received
packet serial number counter; it doesn't actually provoke a change in the
counter, rather relying on the server to happen to give us a packet in the
time window.

Fix this by adding a function to force a ping to be transmitted.

kAFS then keeps track of whether there's been a stall, and if so, uses the
new function to ping the server, resetting the timeout to allow the reply
to come back.

If there's a stall, a ping and the call is *still* stalled in the same
place after another period, then the call will be aborted.

Fixes: bc5e3a546d ("rxrpc: Use MSG_WAITALL to tell sendmsg() to temporarily ignore signals")
Fixes: f4d15fb6f9 ("rxrpc: Provide functions for allowing cleaner handling of signals")
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-15 11:35:40 -08:00
Linus Torvalds
dbb3c26034 Power management updates for 4.20-rc3
- Drop stale DT binding for the arm_big_little_dt driver removed
    recently (Sudeep Holla).
 
  - Fix up error handling in the imx6q cpufreq driver to make it
    report voltage scaling failures (Anson Huang).
 
  - Fix two issues in the cpufreq documentation (Viresh Kumar,
    Zhao Wei Liew).
 
  - Fix ARM cpuidle driver initialization regression from the 4.19
    time frame and rework the driver registration part of it to
    simplify code (Ulf Hansson).
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Merge tag 'pm-4.20-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These remove a stale DT entry left behind after recent removal of a
  cpufreq driver without users, fix up error handling in the imx6q
  cpufreq driver, fix two issues in the cpufreq documentation, and
  update the ARM cpufreq driver.

  Specifics:

   - Drop stale DT binding for the arm_big_little_dt driver removed
     recently (Sudeep Holla).

   - Fix up error handling in the imx6q cpufreq driver to make it report
     voltage scaling failures (Anson Huang).

   - Fix two issues in the cpufreq documentation (Viresh Kumar, Zhao Wei
     Liew).

   - Fix ARM cpuidle driver initialization regression from the 4.19 time
     frame and rework the driver registration part of it to simplify
     code (Ulf Hansson)"

* tag 'pm-4.20-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ARM: cpuidle: Convert to use cpuidle_register|unregister()
  ARM: cpuidle: Don't register the driver when back-end init returns -ENXIO
  dt-bindings: cpufreq: remove stale arm_big_little_dt entry
  Documentation: cpufreq: Correct a typo
  cpufreq: imx6q: add return value check for voltage scale
  Documentation: cpu-freq: Frequencies aren't always sorted
2018-11-14 15:33:45 -06:00
David S. Miller
11123ab9d9 linux-can-fixes-for-4.20-20181109
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Merge tag 'linux-can-fixes-for-4.20-20181109' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2018-11-09

this is a pull request of 20 patches for net/master.

First we have a patch by Oliver Hartkopp which changes the raw socket's
raw_sendmsg() to return an error value if the user tries to send a CANFD
frame to a CAN-2.0 device.

The next two patches are by Jimmy Assarsson and fix potential problems
in the kvaser_usb driver.

YueHaibing's patches for the ucan driver fix a compile time warning and
remove a duplicate include.

Eugeniu Rosca patch adds more binding documentation to the rcar_can
driver bindings. The next two patches are by Fabrizio Castro for the
rcar_can driver and fixes a problem in the driver's probe function and
document the r8a774a1 binding.

Lukas Wunner's patch fixes a recpetion problem in hi311x driver by
switching from edge to level triggered interruts.

The next three patches all target the flexcan driver. Pankaj Bansal's
patch unconditionally unlocks the last mailbox used for RX. Alexander
Stein provides a better workaround for a hardware limitation when
sending RTR frames, by using the last mailbox for TX, resulting in fewer
lost frames. The patch by me simplyfies the driver, by making a runtime
value a compile time constant.

The following 4 patches are by me and provide the groundwork for the
next patches by Oleksij Rempel. To avoid code duplication common code in
the common CAN driver infrastructure is factured out and error handling
is cleaned up.

The next 4 patches are by Oleksij Rempel and fix the problem in the
flexcan driver that other processes see TX frames arrive out of order
with ragards to a RX'ed frame (which are send by a different system on
the CAN bus as the result of our TX frame).
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-13 08:43:05 -08:00
Ding Tao
6c4b88288a Input: dt-bindings - fix a typo in file input-reset.txt
Replace sysrq-reset-seq with keyset.

Signed-off-by: Ding Tao <miyatsu@qq.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-11-12 11:52:05 -08:00
Douglas Anderson
7243ec72b9 dt-bindings: phy-qcom-qmp: Fix several mistakes from prior commits
Digging through the "phy-qcom-qmp" showed me many inconsistencies
between the bindings and the reality of the driver.  Let's fix them
all.

* In commit 2d66eab183 ("dt-bindings: phy: qmp: Add support for QMP
  phy in IPQ8074") we probably should have explicitly listed that
  there are no clocks for this PHY and also added the reset names in
  alphabetical order.  You can see that there are no clocks in the
  driver where "clk_list" is NULL.

* In commit 8587b220f0 ("dt-bindings: phy-qcom-qmp: Update bindings
  for QMP V3 USB PHY") we probably should have listed the resets for
  this new PHY and also removed the "(Optional)" marking for the "cfg"
  reset since PHYs that need "cfg" really do need it.  It's just that
  not all PHYs need it.

* In commit 7f08020741 ("dt-bindings: phy-qcom-qmp: Update bindings
  for sdm845") we forgot to update one instance of the string
  "qcom,qmp-v3-usb3-phy" to be "qcom,sdm845-qmp-usb3-phy".  Let's fix
  that.  We should also have added "qcom,sdm845-qmp-usb3-uni-phy" to
  the clock-names and reset-names lists.

* In commit 99c7c7364b ("dt-bindings: phy-qcom-qmp: Add UFS phy
  compatible string for sdm845") we should have added the set of
  clocks and resets for "qcom,sdm845-qmp-ufs-phy".  These were taken
  from the driver.

* Cleanup the wording for what properties child nodes have to make it
  more obvious which types of PHYs need clocks and resets.  This was
  sorta implicit in the "-names" description but I found myself
  confused.

* As per the code not all "pcie qmp phys" have resets.  Specifically
  note that the "has_lane_rst" property in the driver is false for
  "ipq8074-qmp-pcie-phy".  Thus make it clear exactly which PHYs need
  child nodes with resets.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Evan Green <evgreen@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2018-11-12 16:19:06 +05:30