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dax_writeback_mapping_range() fails to update iteration index when
searching radix tree for entries needing cache flushing. Thus each
pagevec worth of entries is searched starting from the start which is
inefficient and prone to livelocks. Update index properly.
Link: http://lkml.kernel.org/r/20170619124531.21491-1-jack@suse.cz
Fixes: 9973c98ecfda3 ("dax: add support for fsync/sync")
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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If a positive status is passed with the AUTOFS_DEV_IOCTL_FAIL ioctl,
autofs4_d_automount() will return
ERR_PTR(status)
with that status to follow_automount(), which will then dereference an
invalid pointer.
So treat a positive status the same as zero, and map to ENOENT.
See comment in systemd src/core/automount.c::automount_send_ready().
Link: http://lkml.kernel.org/r/871sqwczx5.fsf@notabene.neil.brown.name
Signed-off-by: NeilBrown <neilb@suse.com>
Cc: Ian Kent <raven@themaw.net>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Existing code that uses vmalloc_to_page() may assume that any address
for which is_vmalloc_addr() returns true may be passed into
vmalloc_to_page() to retrieve the associated struct page.
This is not un unreasonable assumption to make, but on architectures
that have CONFIG_HAVE_ARCH_HUGE_VMAP=y, it no longer holds, and we need
to ensure that vmalloc_to_page() does not go off into the weeds trying
to dereference huge PUDs or PMDs as table entries.
Given that vmalloc() and vmap() themselves never create huge mappings or
deal with compound pages at all, there is no correct answer in this
case, so return NULL instead, and issue a warning.
When reading /proc/kcore on arm64, you will hit an oops as soon as you
hit the huge mappings used for the various segments that make up the
mapping of vmlinux. With this patch applied, you will no longer hit the
oops, but the kcore contents willl be incorrect (these regions will be
zeroed out)
We are fixing this for kcore specifically, so it avoids vread() for
those regions. At least one other problematic user exists, i.e.,
/dev/kmem, but that is currently broken on arm64 for other reasons.
Link: http://lkml.kernel.org/r/20170609082226.26152-1-ard.biesheuvel@linaro.org
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Laura Abbott <labbott@redhat.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: zhong jiang <zhongjiang@huawei.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This is a partial revert of commit 338a16ba1549 ("mm, thp: copying user
pages must schedule on collapse") which added a cond_resched() to
__collapse_huge_page_copy().
On x86 with CONFIG_HIGHPTE, __collapse_huge_page_copy is called in
atomic context and thus scheduling is not possible. This is only a
possible config on arm and i386.
Although need_resched has been shown to be set for over 100 jiffies
while doing the iteration in __collapse_huge_page_copy, this is better
than doing
if (in_atomic())
cond_resched()
to cover only non-CONFIG_HIGHPTE configs.
Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1706191341550.97821@chino.kir.corp.google.com
Signed-off-by: David Rientjes <rientjes@google.com>
Reported-by: Larry Finger <Larry.Finger@lwfinger.net>
Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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A Mutex lock in cros_ec_cmd_xfer which may be held by frozen
Userspace thread during system suspending. So should not
call this routine in suspend thread.
Signed-off-by: Jeffery Yu <jefferyy@nvidia.com>
Signed-off-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Benson Leung <bleung@chromium.org>
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Some devices might want to turn off the lightbar if e.g. the
system turns the screen off due to idleness. This prevents the
kernel from going through its normal suspend/resume pathways.
Signed-off-by: Eric Caruso <ejcaruso@chromium.org>
Signed-off-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Benson Leung <bleung@chromium.org>
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Don't let EC control suspend/resume sequence. If the EC controls the
lightbar and sets the sequence when it notices the chipset transitioning
between states, we can't make exceptions for cases where we don't want
to activate the lightbar. Instead, let's move the suspend/resume
notifications into the kernel so we can selectively play the sequences.
Signed-off-by: Eric Caruso <ejcaruso@chromium.org>
Signed-off-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Benson Leung <bleung@chromium.org>
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Add a program feature so we can upload and run programs for lightbar
sequences. We should be able to use this to shift sequences out of the
EC and save space there.
$ cat <suitable program bin> > /sys/devices/.../cros_ec/program
$ echo program > /sys/devices/.../cros_ec/sequence
Signed-off-by: Eric Caruso <ejcaruso@chromium.org>
Signed-off-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Benson Leung <bleung@chromium.org>
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This patch installs a notify handler to process MKBP events for EC
firmware directing them over ACPI.
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Signed-off-by: Benson Leung <bleung@chromium.org>
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This patch adds suspend and resume pm ops to the LPC ChromeOS EC driver.
These LPC handlers call the croc_ec generic handlers.
Signed-off-by: Archana Patni <archana.patni@intel.com>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Signed-off-by: Benson Leung <bleung@chromium.org>
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This patch removes platform_device_register() call and adds an ACPI
device id structure. The driver is now automatically probed for devices
with a GOOG0004 ACPI entry.
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Signed-off-by: Benson Leung <bleung@chromium.org>
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This adds support for the ChromeOS LPC Microchip Embedded Controller
(mec1322) variant.
mec1322 accesses I/O region [800h, 9ffh] through embedded memory
interface (EMI) rather than LPC.
Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Benson Leung <bleung@chromium.org>
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Call common functions for read / write to prepare support for future
LPC protocol variants which use different I/O ops than inb / outb.
Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Benson Leung <bleung@chromium.org>
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There were a few bits and pieces left over from the now-disused DocBook
toolchain; git rid of them.
Reported-by: Markus Heiser <markus.heiser@darmarit.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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This is probably the lamest patch ever, but then again "Welcome to The
Linux Kernel's documentation" is nearly equally lame. Really, we don't
need to "Welcome" people to the documentation, just tell them what the
site is about.
Signed-off-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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...otherwise the PDF build fails when it can't find constraints.pdf.
Acked-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Two table problems caused the PDF build to fail:
- Evidently multirow cells are not appreciated in table headers,
so remove such from the "CS Rows" table.
- The logging message structure table was incorrectly formatted,
with two "+" instead of "|". The HTML build is forgiving of such
things, but PDF is not.
Acked-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Commit 85c21e5c3ee7 (docs-rst: better adjust margins and font size) added a
\usepackage{geometry} that conflicts with another inclusion deep within the
dependencies with newer versions of Sphinx, causing the the PDF build to fail
with a "conflicting parameters" error.
Detect the Sphinx version, using sphinxsetup for Sphinx versions 1.5 and
upper.
Fixes: 85c21e5c3ee74fb75d690c57f7066bae7e2dca55
[jc: Tweaked logic to exclude 1.5.x for x < 3 ]
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Otherwise we get PDF build failures when LaTeX refused to acknowledge the
existence of \ifthenelse
Fixes: 41cff161fe99d1c6a773becc2250a1dc3ac035ff
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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After commit a8ba798bc8ec ("selftests: enable O and KBUILD_OUTPUT"),
net selftest build fails because it points output file without $(OUTPUT)
yet. This commit fixes the error.
Signed-off-by: SeongJae Park <sj38.park@gmail.com>
Fixes: a8ba798bc8ec ("selftests: enable O and KBUILD_OUTPUT")
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Build of aperf fails as below:
```
gcc -Wall -D_GNU_SOURCE -lm aperf.c -o /tools/testing/selftests/intel_pstate/aperf
/tmp/ccKf3GF6.o: In function `main':
aperf.c:(.text+0x278): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
```
The faulure occurs because -lm was defined as LDFLAGS and implicit rule
of make places LDFLAGS before source file. This commit fixes the
problem by using LDLIBS instead of LDFLAGS.
Signed-off-by: SeongJae Park <sj38.park@gmail.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Selftest for memfd shows build error as below:
```
gcc -D_FILE_OFFSET_BITS=64 -I../../../../include/uapi/ -I../../../../include/ -I../../../../usr/include/ fuse_mnt.c -o /home/sjpark/linux/tools/testing/selftests/memfd/fuse_mnt
/tmp/cc6NHdwJ.o: In function `main':
fuse_mnt.c:(.text+0x249): undefined reference to `fuse_main_real'
collect2: error: ld returned 1 exit status
```
The build fails because output file is specified without $(OUTPUT) and
LDFLAGS is used though Makefile implicit rule is used. This commit
fixes the error by specifying output file path with $(OUTPUT) and using
LDLIBS instead of LDFLAGS.
Signed-off-by: SeongJae Park <sj38.park@gmail.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Two fixes to remove spurious WARN_ONs from the new(ish) qedi driver.
The driver already prints a warning message, there's no need to panic
users by printing something that looks like an oops as well"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: qedi: Remove WARN_ON from clear task context.
scsi: qedi: Remove WARN_ON for untracked cleanup.
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Pull xfs fixes from Darrick Wong:
"I have one more bugfix for you for 4.12-rc7 to fix a disk corruption
problem:
- don't allow swapon on files on the realtime device, because the
swap code will swap pages out to blocks on the data device, thereby
corrupting the filesystem"
* tag 'xfs-4.12-fixes-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: don't allow bmap on rt files
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Florian Fainelli says:
====================
net: phy: Support "internal" PHY interface
This makes the "internal" phy-mode property generally available and
documented and this allows us to remove some custom parsing code
we had for bcmgenet and bcm_sf2 which both used that specific value.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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The PHY library now supports an "internal" phy-mode, thus making our
custom parsing code now unnecessary.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The PHY library now supports an "internal" phy-mode, thus making our
custom parsing code now unnecessary.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Now that the Device Tree binding has been updated, update the PHY
library phy_interface_t and phy_modes to support the "internal" PHY
interface type.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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A number of Ethernet MACs have internal Ethernet PHYs and the internal
wiring makes it so that this knowledge needs to be available using the
standard 'phy-mode' property.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The driver was clearing the hold bit in the control register before
writing to the address register which resulted in a stop condition
being generated rather than a repeated start.
This issue was only observed when a system was running much
slower than a normal processor would execute. The IP data sheet
mentions a ordering of writing to the address register before
clearing the hold.
Fixes: df8eb5691c4 ("i2c: Add driver for Cadence I2C controller")
Signed-off-by: John Linn <john.linn@xilinx.com>
Signed-off-by: Paresh Chaudhary <paresh.chaudhary@rockwellcollins.com>
Signed-off-by: Matthew Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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This patch adds i2c controller driver for ZTE's zx2967 family.
Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Jun Nie <jun.nie@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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This patch adds dt-binding documentation for zx2967 family
i2c controller.
Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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Michael Chan says:
====================
bnxt_en: Error handling and netpoll fixes.
Add missing error handling and fix netpoll handling. The current code
handles RX and TX events in netpoll mode and is causing lots of warnings
and errors in the RX code path in netpoll mode. The fix is to only handle
TX events in netpoll mode.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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To handle netpoll properly, the driver must only handle TX packets
during NAPI. Handling RX events cause warnings and errors in
netpoll mode. The ndo_poll_controller() method should call
napi_schedule() directly so that a NAPI weight of zero will be used
during netpoll mode.
The bnxt_en driver supports 2 ring modes: combined, and separate rx/tx.
In separate rx/tx mode, the ndo_poll_controller() method will only
process the tx rings. In combined mode, the rx and tx completion
entries are mixed in the completion ring and we need to drop the rx
entries and recycle the rx buffers.
Add a function bnxt_force_rx_discard() to handle this in netpoll mode
when we see rx entries in combined ring mode.
Reported-by: Calvin Owens <calvinowens@fb.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When we get a TPA_END completion to handle a completed LRO packet, it
is possible that hardware would indicate errors. The current code is
not checking for the error condition. Define the proper error bits and
the macro to check for this error and abort properly.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Support for enforced STOPs will allow us to use SCCB compatible devices.
Based on a preliminary patch by Wolfram Sang.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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Added myself as maintainer of the Aspeed I2C driver and the associated
I2C interrupt controller and added Joel Stanley and Benjamin
Herrenschmidt as reviewers.
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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Added slave support for Aspeed I2C controller. Supports fourteen busses
present in AST24XX and AST25XX BMC SoCs by Aspeed.
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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Added initial master support for Aspeed I2C controller. Supports
fourteen busses present in AST24XX and AST25XX BMC SoCs by Aspeed.
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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Added device tree binding documentation for Aspeed I2C busses.
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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The function, skb_complete_tx_timestamp(), used to allow passing in a
NULL pointer for the time stamps, but that was changed in commit
62bccb8cdb69051b95a55ab0c489e3cab261c8ef ("net-timestamp: Make the
clone operation stand-alone from phy timestamping"), and the existing
call sites, all of which are in the dp83640 driver, were fixed up.
Even though the kernel-doc was subsequently updated in commit
7a76a021cd5a292be875fbc616daf03eab1e6996 ("net-timestamp: Update
skb_complete_tx_timestamp comment"), still a bug fix from Manfred
Rudigier came into the driver using the old semantics. Probably
Manfred derived that patch from an older kernel version.
This fix should be applied to the stable trees as well.
Fixes: 81e8f2e930fe ("net: dp83640: Fix tx timestamp overflow handling.")
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add recent findings (IGNORE_NAK) and document in a bit more detail why
the feature is not possible.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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As of commit 5052de8deff56, QCOM_SMD_RPM and various other config
options enabled in the qcom_defconfig depends on the RPMSG. If
QCOM_SMD_RPM config option is not selected it disables the
REGULATOR_QCOM_SMD_RPM and other essential config options.
Signed-off-by: Bhushan Shah <bshah@kde.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
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Qualcomm ARM Based defconfig Updates for v4.13
* Enable IPQ4019 clock and pinctrl
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux
Saeed Mahameed says:
====================
mlx5-updates-2017-06-23
This series provides some updates to the mlx5 core and netdevice drivers.
Three patches from Tariq, Introduces page reuse mechanism in non-Striding
RQ RX datapath, we allow the the RX descriptor to reuse its allocated page
as much as it could, until the page is fully consumed. RX page reuse
reduces the stress on page allocator and improves RX performance especially
with high speeds (100Gb/s).
Next four patches of the series from Or allows to offload tc flower matching
on ttl/hoplimit and header re-write of hoplimit.
The rest of the series from Yotam and Or enhances mlx5 to support FW flashing
through the mlxfw module, in a similar manner done by the mlxsw driver.
Currently, only ethtool based flashing is implemented, where both Eth and IB ports
are supported.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Buffer group mappings can be obtained using FW_PARAMs cmd for newer FW.
Since some of the bg_maps are obtained in atomic context, created another
t4_query_params_ns(), that wont sleep when awaiting mbox cmd completion.
Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Arjun Vynipadath <arjun@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We were using t4_get_mps_bg_map() for both t4_get_port_stats()
to determine which MPS Buffer Groups to report statistics on for a given
Port, and also for t4_sge_alloc_rxq() to provide a TP Ingress Channel
Congestion Map. For T4/T5 these are actually the same values (because they
are ~somewhat~ related), but for T6 they should return different values
(T6 has Port 0 associated with MPS Buffer Group 0 (with MPS Buffer Group 1
silently cascading off) and Port 1 is associated with MPS Buffer Group 2
(with 3 cascading off)).
Based on the original work by Casey Leedom <leedom@chelsio.com>
Signed-off-by: Arjun Vynipadath <arjun@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The copy_to_user() function returns the number of bytes remaining but we
want to return -EFAULT here.
Fixes: 3c4d7559159b ("tls: kernel TLS support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Dave Watson <davejwatson@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next
Steffen Klassert says:
====================
pull request (net-next): ipsec-next 2017-06-23
1) Use memdup_user to spmlify xfrm_user_policy.
From Geliang Tang.
2) Make xfrm_dev_register static to silence a sparse warning.
From Wei Yongjun.
3) Use crypto_memneq to check the ICV in the AH protocol.
From Sabrina Dubroca.
4) Remove some unused variables in esp6.
From Stephen Hemminger.
5) Extend XFRM MIGRATE to allow to change the UDP encapsulation port.
From Antony Antony.
6) Include the UDP encapsulation port to km_migrate announcements.
From Antony Antony.
Please pull or let me know if there are problems.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Netanel Belgazal says:
====================
net: update ena ethernet driver to version 1.2.0
This patchset contains some new features/improvements that were added
to the ENA driver to increase its robustness and are based on
experience of wide ENA deployment.
Change log:
V2:
* Remove patch that add inline to C-file static function (contradict coding style).
* Remove patch that moves MTU parameter validation in ena_change_mtu() instead of
using the network stack.
* Use upper_32_bits()/lower_32_bits() instead of casting.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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