Updated the regmap & indirect access support for spi-altera.

Patch #1 is an 1:1 replacement of of readl/writel with regmap_read/write
Patch #2 introduced a new platform_device_id to support indirect access as
         a sub device.
Patch #3 is a minor fix.

Main changes from v1:
 - Split the regmap supporting patch to 2 patches.
 - Add a new platform_device_id to support indirect access.
 - Removed the v1 patch "move driver name string to header file". Now we
   use driver name string directly.
 - Add Yilun's Signed-off-by for Patch #3.
 - Add Tom's Reviewed-by.

Matthew Gerlach (1):
  spi: altera: fix size mismatch on 64 bit processors

Xu Yilun (2):
  spi: altera: use regmap-mmio instead of direct mmio register access
  spi: altera: support indirect access to the registers

 drivers/spi/Kconfig      |   1 +
 drivers/spi/spi-altera.c | 127 +++++++++++++++++++++++++++++++++++++++--------
 2 files changed, 107 insertions(+), 21 deletions(-)

--
2.7.4

Merge series "spi: spi-geni-qcom: Fixes / perf improvements" from Douglas Anderson <dianders@chromium.org>:

This patch series is a new version of the previous patch posted:
  [PATCH v2] spi: spi-geni-qcom: Speculative fix of "nobody cared" about interrupt
  https://lore.kernel.org/r/20200317133653.v2.1.I752ebdcfd5e8bf0de06d66e767b8974932b3620e@changeid

At this point I've done enough tracing to know that there was a real
race in the old code (not just weakly ordered memory problems) and
that should be fixed with the locking patches.

While looking at this driver, I also noticed we weren't properly
noting error interrupts and also weren't actually using our FIFO
effectively, so I fixed those.

The last patch in the series addresses review feedback about dislike
for the "cur_mcmd" state variable.  It also could possibly make
"abort" work ever-so-slightly more reliably.

Changes in v4:
- Drop 'controller' in comment.
- Use Stephen's diagram to explain the race better.

Changes in v3:
- ("spi: spi-geni-qcom: No need for irqsave variant...") new for v3
- Split out some lock cleanup to previous patch.
- Don't need to read IRQ status register inside spinlock.
- Don't check for state CMD_NONE; later patch is removing state var.
- Don't hold the lock for all of setup_fifo_xfer().
- Comment about why it's safe to Ack interrupts at the end.
- Subject/desc changed since race is definitely there.
- ("spi: spi-geni-qcom: Check for error IRQs") new in v3.
- ("spi: spi-geni-qcom: Actually use our FIFO") new in v3.
- ("spi: spi-geni-qcom: Don't keep a local state variable") new in v3.

Changes in v2:
- Detect true spurious interrupt.
- Still return IRQ_NONE for state machine mismatch, but print warn.

Douglas Anderson (5):
  spi: spi-geni-qcom: No need for irqsave variant of spinlock calls
  spi: spi-geni-qcom: Mo' betta locking
  spi: spi-geni-qcom: Check for error IRQs
  spi: spi-geni-qcom: Actually use our FIFO
  spi: spi-geni-qcom: Don't keep a local state variable

 drivers/spi/spi-geni-qcom.c | 120 ++++++++++++++++++++++++------------
 1 file changed, 81 insertions(+), 39 deletions(-)

--
2.27.0.290.gba653c62da-goog

No need to redefine already existing definition.
So, replace custom by generic one.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200618170144.57433-1-andriy.shevchenko@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

The variable "cur_mcmd" kept track of our current state (idle, xfer,
cs, cancel).  We don't really need it, so get rid of it.  Instead:
* Use separate condition variables for "chip select done", "cancel
  done", and "abort done".  This is important so that if a "done"
  comes through (perhaps some previous interrupt finally came through)
  it can't confuse the cancel/abort function.
* Use the "done" interrupt only for when a chip select or transfer is
  done and we can tell the difference by looking at whether "cur_xfer"
  is NULL.

This is mostly a no-op change.  However, it is possible it could fix
an issue where a super delayed interrupt for a cancel command could
have confused our waiting for an abort command.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20200618080459.v4.5.Ib1e6855405fc9c99916ab7c7dee84d73a8bf3d68@changeidSigned-off-by: Mark Brown <broonie@kernel.org>

The geni hardware has a FIFO that can hold up to 64 bytes (it has 16
entries that can hold 4 bytes each), at least on the two SoCs I tested
(sdm845 and sc7180).  We configured our RX Watermark to 0, which
basically meant we got an interrupt as soon as the first 4 bytes
showed up in the FIFO.  Tracing the IRQ handler showed that we often
only read 4 or 8 bytes per IRQ handler.

I tried setting the RX Watermark to "fifo size - 2" but that just got
me a bunch of overrun errors reported.  Setting it to "fifo size - 3"
seemed to work great, though.  This made me worried that we'd start
getting overruns if we had long interrupt latency, but that doesn't
appear to be the case and delays inserted in the IRQ handler while
using "fifo size - 3" didn't cause any errors.  Presumably there is
some interaction with the poorly-documented RFR (ready for receive)
level means that "fifo size - 3" is the max.  We are the SPI master,
so it makes sense that there would be no problems with overruns, the
master should just stop clocking.

Despite "fifo size - 3" working, I chose "fifo size / 2" (8 entries =
32 bytes) which gives us a little extra time to get to the interrupt
handler and should reduce dead time on the SPI wires.  With this
setting, I often saw the IRQ handler handle 40 bytes but sometimes up
to 56 if we had bad interrupt latency.

Testing by running "flashrom -p ec -r" on a Chromebook saw interrupts
from the SPI driver cut roughly in half.  Time was roughly the same.

Fixes: 561de45f ("spi: spi-geni-qcom: Add SPI driver support for GENI based QUP")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20200618080459.v4.4.I988281f7c6ee0ed00325559bfce7539f403da69e@changeidSigned-off-by: Mark Brown <broonie@kernel.org>

>From reading the #defines it seems like we should shout if we ever see
one of these error bits.  Let's do so.  This doesn't do anything
functional except print a yell in the log if the error bits are seen.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20200618080459.v4.3.Id8bebdbdb4d2ed9468634343a7e6207d6cffff8a@changeidSigned-off-by: Mark Brown <broonie@kernel.org>

If you added a bit of a delay (like a trace_printk) into the ISR for
the spi-geni-qcom driver, you would suddenly start seeing some errors
spit out.  The problem was that, though the ISR itself held a lock,
other parts of the driver didn't always grab the lock.

One example race was this:
  CPU0                                         CPU1
  ----                                         ----
  spi_geni_set_cs()
   mas->cur_mcmd = CMD_CS;
   geni_se_setup_m_cmd(...)
   wait_for_completion_timeout(&xfer_done);
                                              <INTERRUPT>
                                               geni_spi_isr()
                                                complete(&xfer_done);
   <wakeup>
   pm_runtime_put(mas->dev);
  ... // back to SPI core
  spi_geni_transfer_one()
   setup_fifo_xfer()
    mas->cur_mcmd = CMD_XFER;
                                                mas->cur_cmd = CMD_NONE; // bad!
                                                return IRQ_HANDLED;

Let's fix this.  Before we start messing with hardware, we'll grab the
lock to make sure that the IRQ handler from some previous command has
really finished.  We don't need to hold the lock unless we're in a
state where more interrupts can come in, but we at least need to make
sure the previous IRQ is done.  This lock is used exclusively to
prevent the IRQ handler and non-IRQ from stomping on each other.  The
SPI core handles all other mutual exclusion.

As part of this, we change the way that the IRQ handler detects
spurious interrupts.  Previously we checked for our state variable
being set to IRQ_NONE, but that was done outside the spinlock.  We
could move it into the spinlock, but instead let's just change it to
look for the lack of any IRQ status bits being set.  This can be done
outside the lock--the hardware certainly isn't grabbing or looking at
the spinlock when it updates its status register.

It's possible that this will fix real (but very rare) errors seen in
the field that look like:
  irq ...: nobody cared (try booting with the "irqpoll" option)

NOTE: an alternate strategy considered here was to always make the
complete() / spi_finalize_current_transfer() the very last thing in
our IRQ handler.  With such a change you could consider that we could
be "lockless".  In that case, though, we'd have to be very careful w/
memory barriers so we made sure we didn't have any bugs with weakly
ordered memory.  Using spinlocks makes the driver much easier to
understand.

Fixes: 561de45f ("spi: spi-geni-qcom: Add SPI driver support for GENI based QUP")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20200618080459.v4.2.I752ebdcfd5e8bf0de06d66e767b8974932b3620e@changeidSigned-off-by: Mark Brown <broonie@kernel.org>

The spi-altera driver was originally written with a 32
bit processor, where sizeof(unsigned long) is 4.  On a
64 bit processor sizeof(unsigned long) is 8.  Change the structure
member to u32 to match the actual size of the control
register.
Signed-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Signed-off-by: Xu Yilun <yilun.xu@intel.com>
Reviewed-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/1592531021-11412-4-git-send-email-yilun.xu@intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

This patch adds support for indirect access to the registers via parent
regmap.

The use case is, the spi master is a sub device of a Multifunction
device, which is connected to host by some indirect bus. To support this
device type, a new platform_device_id is introduced, and the driver tries
to get parent regmap for register accessing like many MFD sub device
drivers do.
Signed-off-by: Xu Yilun <yilun.xu@intel.com>
Signed-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Signed-off-by: Wu Hao <hao.wu@intel.com>
Signed-off-by: Russ Weight <russell.h.weight@intel.com>
Reviewed-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/1592531021-11412-3-git-send-email-yilun.xu@intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

This patch adds support for regmap. It makes preparation for supporting
different ways to access the registers.
Signed-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Signed-off-by: Wu Hao <hao.wu@intel.com>
Signed-off-by: Xu Yilun <yilun.xu@intel.com>
Signed-off-by: Russ Weight <russell.h.weight@intel.com>
Reviewed-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/1592531021-11412-2-git-send-email-yilun.xu@intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

The driver locks its locks in two places.

In the first usage of the lock the function doing the locking already
has a sleeping call and thus we know we can't be called from interrupt
context.  That means we can use the "spin_lock_irq" variant of the
function.

In the second usage of the lock the function is the interrupt handler
and we know interrupt handlers are called with interrupts disabled.
That means we can use the "spin_lock" variant of the function.

This patch is expected to be a no-op and is just a cleanup / slight
optimization.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20200616034044.v3.1.Ic50cccdf27d42420a63485082f8b5bf86ed1a2b6@changeidSigned-off-by: Mark Brown <broonie@kernel.org>

bcm63xx arch resets the HSSPI controller at early boot. However, bmips arch
needs to perform a reset when probing the driver.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20200616173235.3473149-3-noltari@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

bcm63xx arch resets the SPI controller at early boot. However, bmips arch
needs to perform a reset when probing the driver.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20200616173235.3473149-2-noltari@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

Merge series "Add MSIOF support for R8A7742 SOC" from Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>:

Hi All,

This patch series adds support for MSIOF on R8A7742 SOC.

Cheers,
Prabhakar

Lad Prabhakar (2):
  dt-bindings: spi: renesas,sh-msiof: Add r8a7742 support
  ARM: dts: r8a7742: Add MSIOF[0123] support

 .../devicetree/bindings/spi/renesas,sh-msiof.yaml  |  1 +
 arch/arm/boot/dts/r8a7742.dtsi                     | 64 ++++++++++++++++++++++
 2 files changed, 65 insertions(+)

--
2.7.4

BCM63xx SPI and HSSPI controller are present on several BMIPS SoCs (BCM6318,
BCM6328, BCM6358, BCM6362, BCM6368 and BCM63268).

v2: use devm_reset_control_get_exclusive

Álvaro Fernández Rojas (4):
  spi: bcm63xx-spi: add reset support
  spi: bcm63xx-spi: allow building for BMIPS
  spi: bcm63xx-hsspi: add reset support
  spi: bcm63xx-hsspi: allow building for BMIPS

 drivers/spi/Kconfig             |  4 ++--
 drivers/spi/spi-bcm63xx-hsspi.c | 17 +++++++++++++++++
 drivers/spi/spi-bcm63xx.c       | 17 +++++++++++++++++
 3 files changed, 36 insertions(+), 2 deletions(-)

--
2.27.0

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linux-arm-kernel@lists.infradead.org
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Merge series "Add more configuration and regmap support for spi-altera" from Xu Yilun <yilun.xu@intel.com>:

This patchset adds platform_data for spi-altera, to enable more IP
configurations, and creating specific spi client devices. It also adds
regmap support, to enable the indirect access to this IP.

We have a PCIE based FPGA platform which integrates this IP to communicate
with a BMC chip (Intel MAX10) over SPI. The IP is configured as 32bit data
width. There is also an indirect access interface in FPGA for host to
access the registers of this IP. This patchset enables this use case.

Matthew Gerlach (1):
  spi: altera: fix size mismatch on 64 bit processors

Xu Yilun (5):
  spi: altera: add 32bit data width transfer support.
  spi: altera: add SPI core parameters support via platform data.
  spi: altera: add platform data for slave information.
  spi: altera: use regmap instead of direct mmio register access
  spi: altera: move driver name string to header file

 drivers/spi/Kconfig        |   1 +
 drivers/spi/spi-altera.c   | 161 +++++++++++++++++++++++++++++++++++++--------
 include/linux/spi/altera.h |  37 +++++++++++
 3 files changed, 171 insertions(+), 28 deletions(-)
 create mode 100644 include/linux/spi/altera.h

--
2.7.4

The OcteonTX (TX1/ThunderX) SPI controller does not support full
duplex transactions. Set the appropriate flag such that the spi
core will return -EINVAL on such transactions requested by chip
drivers.

This is an RFC as I need someone from Marvell/Cavium to confirm
if this driver is used for other silicon that does support
full duplex transfers (in which case we will need to identify
that we are running on the ThunderX arch before setting the flag).
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Cc: Robert Richter <rrichter@marvell.com>
Link: https://lore.kernel.org/r/1590680799-5640-1-git-send-email-tharvey@gateworks.comSigned-off-by: Mark Brown <broonie@kernel.org>

Add the SPI driver for the Renesas RPC-IF.  It's the "front end" driver
using the "back end" APIs in the main driver to talk to the real hardware.
We only implement the 'spi-mem' interface -- there's no need to implement
the usual SPI driver methods...

Based on the original patch by Mason Yang <masonccyang@mxic.com.tw>.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Link: https://lore.kernel.org/r/1ece0e6c-71af-f0f1-709e-571f4b0b4853@cogentembedded.comSigned-off-by: Mark Brown <broonie@kernel.org>

bcm63xx-hsspi controller is present on several BMIPS SoCs (BCM6318, BCM6328,
BCM6362 and BCM63268).
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20200615090943.2936839-5-noltari@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

bcm63xx-spi controller is present on several BMIPS SoCs (BCM6358, BCM6362,
BCM6368 and BCM63268).
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20200615090943.2936839-3-noltari@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

Document RZ/G1H (R8A7742) SoC bindings.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/1591736054-568-2-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

This patch introduces platform data for slave information, it allows
spi-altera to add new spi devices once master registration is done.
Signed-off-by: Wu Hao <hao.wu@intel.com>
Signed-off-by: Xu Yilun <yilun.xu@intel.com>
Signed-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Signed-off-by: Russ Weight <russell.h.weight@intel.com>
Reviewed-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/1591845911-10197-4-git-send-email-yilun.xu@intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

This patch introduced SPI core parameters in platform data, it
allows passing these SPI core parameters via platform data.
Signed-off-by: Wu Hao <hao.wu@intel.com>
Signed-off-by: Xu Yilun <yilun.xu@intel.com>
Signed-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Signed-off-by: Russ Weight <russell.h.weight@intel.com>
Reviewed-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/1591845911-10197-3-git-send-email-yilun.xu@intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

Add support for 32bit width data register, then it supports 32bit
data width spi slave device and spi transfers.
Signed-off-by: Xu Yilun <yilun.xu@intel.com>
Signed-off-by: Wu Hao <hao.wu@intel.com>
Signed-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Signed-off-by: Russ Weight <russell.h.weight@intel.com>
Reviewed-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/1591845911-10197-2-git-send-email-yilun.xu@intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

The UAPI <linux/spi/spidev.h> uses TABs for alignment.
Convert the recently introduced spaces to TABs to restore consistency.

Fixes: 7bb64402 ("spi: tools: Add macro definitions to fix build errors")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20200613073755.15906-1-geert+renesas@glider.beSigned-off-by: Mark Brown <broonie@kernel.org>

Pull SafeSetID update from Micah Morton:
 "Add additional LSM hooks for SafeSetID

  SafeSetID is capable of making allow/deny decisions for set*uid calls
  on a system, and we want to add similar functionality for set*gid
  calls.

  The work to do that is not yet complete, so probably won't make it in
  for v5.8, but we are looking to get this simple patch in for v5.8
  since we have it ready.

  We are planning on the rest of the work for extending the SafeSetID
  LSM being merged during the v5.9 merge window"

* tag 'LSM-add-setgid-hook-5.8-author-fix' of git://github.com/micah-morton/linux:
  security: Add LSM hooks to set*gid syscalls

The SafeSetID LSM uses the security_task_fix_setuid hook to filter
set*uid() syscalls according to its configured security policy. In
preparation for adding analagous support in the LSM for set*gid()
syscalls, we add the requisite hook here. Tested by putting print
statements in the security_task_fix_setgid hook and seeing them get hit
during kernel boot.
Signed-off-by: Thomas Cedeno <thomascedeno@google.com>
Signed-off-by: Micah Morton <mortonm@chromium.org>

Pull btrfs updates from David Sterba:
 "This reverts the direct io port to iomap infrastructure of btrfs
  merged in the first pull request. We found problems in invalidate page
  that don't seem to be fixable as regressions or without changing iomap
  code that would not affect other filesystems.

  There are four reverts in total, but three of them are followup
  cleanups needed to revert a43a67a2 cleanly. The result is the
  buffer head based implementation of direct io.

  Reverts are not great, but under current circumstances I don't see
  better options"

* tag 'for-5.8-part2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  Revert "btrfs: switch to iomap_dio_rw() for dio"
  Revert "fs: remove dio_end_io()"
  Revert "btrfs: remove BTRFS_INODE_READDIO_NEED_LOCK"
  Revert "btrfs: split btrfs_direct_IO to read and write part"

Pull networking fixes from David Miller:

 1) Fix cfg80211 deadlock, from Johannes Berg.

 2) RXRPC fails to send norigications, from David Howells.

 3) MPTCP RM_ADDR parsing has an off by one pointer error, fix from
    Geliang Tang.

 4) Fix crash when using MSG_PEEK with sockmap, from Anny Hu.

 5) The ucc_geth driver needs __netdev_watchdog_up exported, from
    Valentin Longchamp.

 6) Fix hashtable memory leak in dccp, from Wang Hai.

 7) Fix how nexthops are marked as FDB nexthops, from David Ahern.

 8) Fix mptcp races between shutdown and recvmsg, from Paolo Abeni.

 9) Fix crashes in tipc_disc_rcv(), from Tuong Lien.

10) Fix link speed reporting in iavf driver, from Brett Creeley.

11) When a channel is used for XSK and then reused again later for XSK,
    we forget to clear out the relevant data structures in mlx5 which
    causes all kinds of problems. Fix from Maxim Mikityanskiy.

12) Fix memory leak in genetlink, from Cong Wang.

13) Disallow sockmap attachments to UDP sockets, it simply won't work.
    From Lorenz Bauer.

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (83 commits)
  net: ethernet: ti: ale: fix allmulti for nu type ale
  net: ethernet: ti: am65-cpsw-nuss: fix ale parameters init
  net: atm: Remove the error message according to the atomic context
  bpf: Undo internal BPF_PROBE_MEM in BPF insns dump
  libbpf: Support pre-initializing .bss global variables
  tools/bpftool: Fix skeleton codegen
  bpf: Fix memlock accounting for sock_hash
  bpf: sockmap: Don't attach programs to UDP sockets
  bpf: tcp: Recv() should return 0 when the peer socket is closed
  ibmvnic: Flush existing work items before device removal
  genetlink: clean up family attributes allocations
  net: ipa: header pad field only valid for AP->modem endpoint
  net: ipa: program upper nibbles of sequencer type
  net: ipa: fix modem LAN RX endpoint id
  net: ipa: program metadata mask differently
  ionic: add pcie_print_link_status
  rxrpc: Fix race between incoming ACK parser and retransmitter
  net/mlx5: E-Switch, Fix some error pointer dereferences
  net/mlx5: Don't fail driver on failure to create debugfs
  net/mlx5e: CT: Fix ipv6 nat header rewrite actions
  ...

This reverts commit a43a67a2.

This patch reverts the main part of switching direct io implementation
to iomap infrastructure. There's a problem in invalidate page that
couldn't be solved as regression in this development cycle.

The problem occurs when buffered and direct io are mixed, and the ranges
overlap. Although this is not recommended, filesystems implement
measures or fallbacks to make it somehow work. In this case, fallback to
buffered IO would be an option for btrfs (this already happens when
direct io is done on compressed data), but the change would be needed in
the iomap code, bringing new semantics to other filesystems.

Another problem arises when again the buffered and direct ios are mixed,
invalidation fails, then -EIO is set on the mapping and fsync will fail,
though there's no real error.

There have been discussions how to fix that, but revert seems to be the
least intrusive option.

Link: https://lore.kernel.org/linux-btrfs/20200528192103.xm45qoxqmkw7i5yl@fiona/Signed-off-by: David Sterba <dsterba@suse.com>

On AM65xx MCU CPSW2G NUSS and 66AK2E/L NUSS allmulti setting does not allow
unregistered mcast packets to pass.

This happens, because ALE VLAN entries on these SoCs do not contain port
masks for reg/unreg mcast packets, but instead store indexes of
ALE_VLAN_MASK_MUXx_REG registers which intended for store port masks for
reg/unreg mcast packets.
This path was missed by commit 9d1f6447 ("net: ethernet: ti: ale: fix
seeing unreg mcast packets with promisc and allmulti disabled").

Hence, fix it by taking into account ALE type in cpsw_ale_set_allmulti().

Fixes: 9d1f6447 ("net: ethernet: ti: ale: fix seeing unreg mcast packets with promisc and allmulti disabled")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The ALE parameters structure is created on stack, so it has to be reset
before passing to cpsw_ale_create() to avoid garbage values.

Fixes: 93a76530 ("net: ethernet: ti: introduce am65x/j721e gigabit eth subsystem driver")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Alexei Starovoitov says:

====================
pull-request: bpf 2020-06-12

The following pull-request contains BPF updates for your *net* tree.

We've added 26 non-merge commits during the last 10 day(s) which contain
a total of 27 files changed, 348 insertions(+), 93 deletions(-).

The main changes are:

1) sock_hash accounting fix, from Andrey.

2) libbpf fix and probe_mem sanitizing, from Andrii.

3) sock_hash fixes, from Jakub.

4) devmap_val fix, from Jesper.

5) load_bytes_relative fix, from YiFei.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Looking into the context (atomic!) and the error message should be dropped.
Signed-off-by: Liao Pingfang <liao.pingfang@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>

Pull more cifs updates from Steve French:
 "12 cifs/smb3 fixes, 2 for stable.

   - add support for idsfromsid on create and chgrp/chown allowing
     ability to save owner information more naturally for some workloads

   - improve query info (getattr) when SMB3.1.1 posix extensions are
     negotiated by using new query info level"

* tag '5.8-rc-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
  smb3: Add debug message for new file creation with idsfromsid mount option
  cifs: fix chown and chgrp when idsfromsid mount option enabled
  smb3: allow uid and gid owners to be set on create with idsfromsid mount option
  smb311: Add tracepoints for new compound posix query info
  smb311: add support for using info level for posix extensions query
  smb311: Add support for lookup with posix extensions query info
  smb311: Add support for SMB311 query info (non-compounded)
  SMB311: Add support for query info using posix extensions (level 100)
  smb3: add indatalen that can be a non-zero value to calculation of credit charge in smb2 ioctl
  smb3: fix typo in mount options displayed in /proc/mounts
  cifs: Add get_security_type_str function to return sec type.
  smb3: extend fscache mount volume coherency check

Let's keep "git status" happy and quiet.

Fixes: 9762dc14 ("samples: add binderfs sample program
Fixes: fca5e949 ("samples: binderfs: really compile this sample and fix build issues")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

I'm not convinced the script makes useful automaed help lines anyway,
but since we're trying to deprecate the use of "---help---" in Kconfig
files, let's fix the doc example code too.

See commit a7f7f624 ("treewide: replace '---help---' in Kconfig
files with 'help'")

Cc: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull more Kbuild updates from Masahiro Yamada:

 - fix build rules in binderfs sample

 - fix build errors when Kbuild recurses to the top Makefile

 - covert '---help---' in Kconfig to 'help'

* tag 'kbuild-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  treewide: replace '---help---' in Kconfig files with 'help'
  kbuild: fix broken builds because of GZIP,BZIP2,LZOP variables
  samples: binderfs: really compile this sample and fix build issues