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Author SHA1 Message Date
Ilia Lin
79383539eb dt-bindings: cpufreq: Document operating-points-v2-kryo-cpu
The qcom-cpufreq-kryo driver reads the msm-id and efuse value from the SoC
to provide the OPP framework with required information.
This is used to determine the voltage and frequency value for each OPP of
operating-points-v2 table when it is parsed by the OPP framework.

This change adds documentation for the DT bindings.
The "operating-points-v2-kryo-cpu" DT extends the "operating-points-v2"
with following parameters:
- nvmem-cells (NVMEM area containig the speedbin information)
- opp-supported-hw: A single 32 bit bitmap value,
  representing compatible HW:
			0:	MSM8996 V3, speedbin 0
			1:	MSM8996 V3, speedbin 1
			2:	MSM8996 V3, speedbin 2
			3:	unused
			4:	MSM8996 SG, speedbin 0
			5:	MSM8996 SG, speedbin 1
			6:	MSM8996 SG, speedbin 2
			7-31:	unused

Signed-off-by: Ilia Lin <ilialin@codeaurora.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
Tested-by: Amit Kucheria <amit.kucheria@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-05-30 12:53:11 +02:00
Ilia Lin
46e2856b8e cpufreq: Add Kryo CPU scaling driver
In Certain QCOM SoCs like apq8096 and msm8996 that have KRYO processors,
the CPU frequency subset and voltage value of each OPP varies
based on the silicon variant in use. Qualcomm Process Voltage Scaling Tables
defines the voltage and frequency value based on the msm-id in SMEM
and speedbin blown in the efuse combination.
The qcom-cpufreq-kryo driver reads the msm-id and efuse value from the SoC
to provide the OPP framework with required information.
This is used to determine the voltage and frequency value for each OPP of
operating-points-v2 table when it is parsed by the OPP framework.

Signed-off-by: Ilia Lin <ilialin@codeaurora.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
Tested-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-05-30 12:53:11 +02:00
Andrey Ignatov
13a370b9d2 bpftool: Support sendmsg{4,6} attach types
Add support for recently added BPF_CGROUP_UDP4_SENDMSG and
BPF_CGROUP_UDP6_SENDMSG attach types to bpftool, update documentation
and bash completion.

Signed-off-by: Andrey Ignatov <rdna@fb.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-05-30 12:53:00 +02:00
Daniel Borkmann
ee7dbd9747 Merge branch 'bpf-ir-decoder'
Sean Young says:

====================
The kernel IR decoders (drivers/media/rc/ir-*-decoder.c) support the most
widely used IR protocols, but there are many protocols which are not
supported[1]. For example, the lirc-remotes[2] repo has over 2700 remotes,
many of which are not supported by rc-core. There is a "long tail" of
unsupported IR protocols, for which lircd is need to decode the IR .

IR encoding is done in such a way that some simple circuit can decode it;
therefore, bpf is ideal.

In order to support all these protocols, here we have bpf based IR decoding.
The idea is that user-space can define a decoder in bpf, attach it to
the rc device through the lirc chardev.

Separate work is underway to extend ir-keytable to have an extensive library
of bpf-based decoders, and a much expanded library of rc keymaps.

Another future application would be to compile IRP[3] to a IR BPF program, and
so support virtually every remote without having to write a decoder for each.
It might also be possible to support non-button devices such as analog
directional pads or air conditioning remote controls and decode the target
temperature in bpf, and pass that to an input device.

[1] http://www.hifi-remote.com/wiki/index.php?title=DecodeIR
[2] https://sourceforge.net/p/lirc-remotes/code/ci/master/tree/remotes/
[3] http://www.hifi-remote.com/wiki/index.php?title=IRP_Notation

Changes since v4:
 - Renamed rc_dev_bpf_{attach,detach,query} to lirc_bpf_{attach,detach,query}
 - Fixed error path in lirc_bpf_query
 - Rebased on bpf-next

Changes since v3:
 - Implemented review comments from Quentin Monnet and Y Song (thanks!)
 - More helpful and better formatted bpf helper documentation
 - Changed back to bpf_prog_array rather than open-coded implementation
 - scancodes can be 64 bit
 - bpf gets passed values in microseconds, not nanoseconds.
   microseconds is more than than enough (IR receivers support carriers upto
   70kHz, at which point a single period is already 14 microseconds). Also,
   this makes it much more consistent with lirc mode2.
 - Since it looks much more like lirc mode2, rename the program type to
   BPF_PROG_TYPE_LIRC_MODE2.
 - Rebased on bpf-next

Changes since v2:
 - Fixed locking issues
 - Improved self-test to cover more cases
 - Rebased on bpf-next again

Changes since v1:
 - Code review comments from Y Song <ys114321@gmail.com> and
   Randy Dunlap <rdunlap@infradead.org>
 - Re-wrote sample bpf to be selftest
 - Renamed RAWIR_DECODER -> RAWIR_EVENT (Kconfig, context, bpf prog type)
 - Rebase on bpf-next
 - Introduced bpf_rawir_event context structure with simpler access checking
====================

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-05-30 12:46:21 +02:00
Sean Young
6bdd533cee bpf: add selftest for lirc_mode2 type program
This is simple test over rc-loopback.

Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-05-30 12:40:14 +02:00
Sean Young
f4364dcfc8 media: rc: introduce BPF_PROG_LIRC_MODE2
Add support for BPF_PROG_LIRC_MODE2. This type of BPF program can call
rc_keydown() to reported decoded IR scancodes, or rc_repeat() to report
that the last key should be repeated.

The bpf program can be attached to using the bpf(BPF_PROG_ATTACH) syscall;
the target_fd must be the /dev/lircN device.

Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-05-30 12:38:40 +02:00
Sean Young
170a7e3ea0 bpf: bpf_prog_array_copy() should return -ENOENT if exclude_prog not found
This makes is it possible for bpf prog detach to return -ENOENT.

Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-05-30 12:37:38 +02:00
Philipp Zabel
c25f256625
ASoC: imx-audmux: add RXFS/RXCLK defines for 6-wire connections
In asynchronous mode, a RxFS and RxClk connection needs to be made between
two ports. Add a define for the bit to be set in the *SEL fields.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
[m.felsch@pengutronix.de: fixed comment to include i.MX21 and 35]
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-05-30 11:37:30 +01:00
Pierre-Louis Bossart
0b014d72eb
ASoC: fix 0-day warnings with snd_soc_new_compress()
All conditionally-defined routines in include/sound/soc.h expose a
static inline fallback to avoid 0-day warnings and compilation issues,
except snd_soc_new_compress().

Fixes: 5db6aab6f3 ('ASoC: topology: Add support for compressed PCMs')
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-05-30 11:35:07 +01:00
Viresh Kumar
8a352fd878 OPP: Allow same OPP table to be used for multiple genpd
The OPP binding says:

	Property: operating-points-v2

	...

	This can contain more than one phandle for power domain
	providers that provide multiple power domains. That is, one
	phandle for each power domain. If only one phandle is available,
	then the same OPP table will be used for all power domains
	provided by the power domain provider.

But the OPP core isn't allowing the same OPP table to be used for
multiple domains. Update dev_pm_opp_of_add_table_indexed() to allow
that.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Rajendra Nayak <rnayak@codeaurora.org>
2018-05-30 15:38:21 +05:30
Harald Freudenberger
89a0c0ec0d s390/zcrypt: Fix CCA and EP11 CPRB processing failure memory leak.
Tests showed, that the zcrypt device driver produces memory
leaks when a valid CCA or EP11 CPRB can't get delivered or has
a failure during processing within the zcrypt device driver.

This happens when a invalid domain or adapter number is used
or the lower level software or hardware layers produce any
kind of failure during processing of the request.

Only CPRBs send to CCA or EP11 cards can produce this memory
leak. The accelerator and the CPRBs processed by this type
of crypto card is not affected.

The two fields message and private within the ap_message struct
are allocated with pulling the function code for the CPRB but
only freed when processing of the CPRB succeeds. So for example
an invalid domain or adapter field causes the processing to
fail, leaving these two memory areas allocated forever.

Signed-off-by: Harald Freudenberger <freude@de.ibm.com>
Reviewed-by: Ingo Franzki <ifranzki@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2018-05-30 11:18:05 +02:00
Harald Freudenberger
966f53e750 s390/archrandom: Rework arch random implementation.
The arch_get_random_seed_long() invocation done by the random device
driver is done in interrupt context and may be invoked very very
frequently. The existing s390 arch_get_random_seed*() implementation
uses the PRNO(TRNG) instruction which produces excellent high quality
entropy but is relatively slow and thus expensive.

This fix reworks the arch_get_random_seed* implementation. It
introduces a buffer concept to decouple the delivery of random data
via arch_get_random_seed*() from the generation of new random
bytes. The buffer of random data is filled asynchronously by a
workqueue thread.
If there are enough bytes in the buffer the s390_arch_random_generate()
just delivers these bytes. Otherwise false is returned until the worker
thread refills the buffer.
The worker fills the rng buffer by pulling fresh entropy from the
high quality (but slow) true hardware random generator. This entropy
is then spread over the buffer with an pseudo random generator.
As the arch_get_random_seed_long() fetches 8 bytes and the calling
function add_interrupt_randomness() counts this as 1 bit entropy the
distribution needs to make sure there is in fact 1 bit entropy
contained in 8 bytes of the buffer. The current values pull 32 byte
entropy and scatter this into a 2048 byte buffer. So 8 byte in the
buffer will contain 1 bit of entropy.
The worker thread is rescheduled based on the charge level of the
buffer but at least with 500 ms delay to avoid too much cpu consumption.
So the max. amount of rng data delivered via arch_get_random_seed is
limited to 4Kb per second.

Signed-off-by: Harald Freudenberger <freude@de.ibm.com>
Reviewed-by: Patrick Steuer <patrick.steuer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2018-05-30 11:18:04 +02:00
Ursula Braun
b6ef86e962 s390/net: add pnetid support
s390 hardware supports the definition of a so-call Physical NETwork
IDentifier (short PNETID) per network device port. These PNETIDS
can be used to identify network devices that are attached to the same
physical network (broadcast domain).

This patch provides the interface to extract the PNETID of a port of
a device attached to the ccw-bus or pci-bus.

Parts of this patch are based on an initial implementation by
Thomas Richter.

Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2018-05-30 11:18:03 +02:00
Sebastian Andrzej Siewior
cc85de361d cpufreq: Use static SRCU initializer
Use the static SRCU initializer for `cpufreq_transition_notifier_list'.
This avoids the init_cpufreq_transition_notifier_list() initcall. Its
only purpose is to initialize the SRCU notifier once during boot and set
another variable which is used as an indicator whether the init was
perfromed before cpufreq_register_notifier() was used.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-05-30 11:16:59 +02:00
Sebastian Andrzej Siewior
9c80172b90 kernel/SRCU: provide a static initializer
There are macros for static initializer for the three out of four
possible notifier types, that are:
	ATOMIC_NOTIFIER_HEAD()
	BLOCKING_NOTIFIER_HEAD()
	RAW_NOTIFIER_HEAD()

This patch provides a static initilizer for the forth type to make it
complete.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Tested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-05-30 10:11:34 +02:00
Tao Wang
c7d1f119c4 cpufreq: Fix new policy initialization during limits updates via sysfs
If the policy limits are updated via cpufreq_update_policy() and
subsequently via sysfs, the limits stored in user_policy may be
set incorrectly.

For example, if both min and max are set via sysfs to the maximum
available frequency, user_policy.min and user_policy.max will also
be the maximum.  If a policy notifier triggered by
cpufreq_update_policy() lowers both the min and the max at this
point, that change is not reflected by the user_policy limits, so
if the max is updated again via sysfs to the same lower value,
then user_policy.max will be lower than user_policy.min which
shouldn't happen.  In particular, if one of the policy CPUs is
then taken offline and back online, cpufreq_set_policy() will
fail for it due to a failing limits check.

To prevent that from happening, initialize the min and max fields
of the new_policy object to the ones stored in user_policy that
were previously set via sysfs.

Signed-off-by: Kevin Wangtao <kevin.wangtao@hisilicon.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
[ rjw: Subject & changelog ]
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-05-30 10:11:34 +02:00
Erel Geron
506247825c iwlwifi: fix non_shared_ant for 9000 devices
The non-shared antenna was wrong for 9000 device series.  Fix it to
ANT_B for correct antenna preference by coex in MVM driver.

Fixes: 89374fe60b ("iwlwifi: Add new PCI IDs for 9260 and 5165 series")
Signed-off-by: Erel Geron <erelx.geron@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2018-05-30 10:05:12 +03:00
Johannes Berg
42116705a7 iwlwifi: mvm: fix race in queue notification wait
Initially in this code, the race didn't matter since it didn't
do anything. Latest with the commit I marked this as fixing it
started to matter as something got done here that needed other
data that got freed as soon as the queue notification wait was
returning.

In the scenario we saw, apparently the IWL_MVM_RXQ_NOTIF_DEL_BA
event was sent to all queues, but processing the last event we
returned from iwl_mvm_sync_rx_queues_internal() and then from
iwl_mvm_free_reorder() and continued some processing before
wl_mvm_del_ba() was even invoked on the other CPU. Thus, when
the latter finally ran, it found that mvm->baid_map[baid] was
no longer valid.

Correct the race by moving the counter decrement and wake_up()
to be done only after all the per-event processing completed.
Note that in the commit I marked as being fixed the wake_up()
didn't exist yet (and the code was otherwise problematic) but
this particular problem already existed in a way.

Fixes: b915c10174 ("iwlwifi: mvm: add reorder buffer per queue")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2018-05-30 09:57:23 +03:00
Emmanuel Grumbach
5dd9f6c703 iwlwifi: mvm: honor the max_amsdu_subframes limit
A peer can limit the number of subframes it can handle in a
single A-MSDU.  Honor this limit.

Note that the smallest limit is 8, and we are very unlikely to reach
that limit. So this isn't really a big deal.

Fixes: a6d5e32f24 ("iwlwifi: mvm: send large SKBs to the transport")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2018-05-30 09:55:34 +03:00
Gregory Greenman
d94c5a820d iwlwifi: mvm: open BA session only when sta is authorized
Currently, a BA session is opened when the tx traffic exceeds
10 frames per second. As a result of inter-op problems with some
APs, add a condition to open BA session only when station is
already authorized.

Fixes: 482e48440a ("iwlwifi: mvm: change open and close criteria of a BA session")
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2018-05-30 09:53:11 +03:00
Colin Ian King
b38c395f16 iwlwifi: mvm: remove division by size of sizeof(struct ieee80211_wmm_rule)
The subtraction of two struct ieee80211_wmm_rule pointers leaves a result
that is automatically scaled down by the size of the size of pointed-to
type, hence the division by sizeof(struct ieee80211_wmm_rule) is
bogus and should be removed.

Detected by CoverityScan, CID#1467777 ("Extra sizeof expression")

Fixes: 77e30e10ee ("iwlwifi: mvm: query regdb for wmm rule if needed")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2018-05-30 09:49:38 +03:00
Hans de Goede
fdee6d8fc6 Bluetooth: hci_serdev: Fix HCI_UART_INIT_PENDING not working
Init hci_uart->init_ready so that hci_uart_init_ready() works properly.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2018-05-30 08:49:20 +02:00
Hans de Goede
e9ca08074d Bluetooth: hci_serdev: Move serdev_device_close/open into common hci_serdev code
Make hci_uart_register_device() and hci_uart_unregister_device() call
serdev_device_close()/open() themselves instead of relying on the various
hci_uart drivers to do this for them.

Besides reducing code complexity, this also ensures correct error checking
of serdev_device_open(), which was missing in a few drivers.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2018-05-30 08:47:42 +02:00
Hans de Goede
412fe29ffc Bluetooth: hci_uart: Restore hci_dev->flush callback on open()
For reasons explained in detail in commit 3611f4d2a5 ("hci_ldisc:
fix null pointer deref") the hci_uart_close() functions sets
hci_dev->flush to NULL.

But the device may be re-opened after a close, this commit restores the
hci_dev->flush callback on open().

Note this commit also moves the nearly empty defition of hci_uart_open()
a bit down in the file to avoid the need for forward declaring
hci_uart_flush().

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2018-05-30 08:46:17 +02:00
Shaul Triebitz
0f22e40053 iwlwifi: pcie: fix race in Rx buffer allocator
Make sure the rx_allocator worker is canceled before running the
rx_init routine.  rx_init frees and re-allocates all rxb's pages.  The
rx_allocator worker also allocates pages for the used rxb's.  Running
rx_init and rx_allocator simultaniously causes a kernel panic.  Fix
that by canceling the work in rx_init.

Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2018-05-30 09:44:20 +03:00
Emmanuel Grumbach
0eac9abace iwlwifi: mvm: fix TSO with highly fragmented SKBs
Our hardware has a limited amount of buffer descriptors
for each Tx packet. Because of that, there is a short
piece of code that makes sure that that we don't push too
many subframes in an A-MSDU because of subframes needs 2
buffer descriptors. This code also takes into account the
number of fragment of the skb since we also need a buffer
descriptor for each fragment in the skb.

This piece of code though didn't check that the resulting
number of subframes wasn't 0.

A user reported that using NFS client, he could get skbs
that are so fragmented that the code mentioned above
returned 0 for the number of subframes making
skb_gso_segment fail and subconsequently iwlwifi would WARN.

Fix this by make sure that num_subframes is at least 1.

This fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=199209

Fixes: a6d5e32f24 ("iwlwifi: mvm: send large SKBs to the transport")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2018-05-30 09:33:36 +03:00
Aviya Erenfeld
15c4e33030 iwlmvm: tdls: Check TDLS channel switch support
Some versions of the FW don't support channel switch in TDLS.
Add a condition that checks it.

Fixes: 307e47235a ("iwlwifi: mvm: configure TDLS peers to FW")
Signed-off-by: Aviya Erenfeld <aviya.erenfeld@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2018-05-30 09:31:08 +03:00
Andy Shevchenko
c2e7f5dee7 Bluetooth: btmrvl: Re-use kstrtol_from_user()
Re-use kstrtol_from_user() instead of open coded variant.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2018-05-30 08:16:05 +02:00
Andy Shevchenko
3bf5e97d7b Bluetooth: Re-use kstrtobool_from_user()
Re-use kstrtobool_from_user() instead of open coded variant.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2018-05-30 08:16:04 +02:00
Thierry Escande
9960521c44 Bluetooth: hci_qca: Fix "Sleep inside atomic section" warning
This patch fixes the following warning during boot:

 do not call blocking ops when !TASK_RUNNING; state=1 set at
 [<(ptrval)>] qca_setup+0x194/0x750 [hci_uart]
 WARNING: CPU: 2 PID: 1878 at kernel/sched/core.c:6135
 __might_sleep+0x7c/0x88

In qca_set_baudrate(), the current task state is set to
TASK_UNINTERRUPTIBLE before going to sleep for 300ms. It was then
restored to TASK_INTERRUPTIBLE. This patch sets the current task state
back to TASK_RUNNING instead.

Signed-off-by: Thierry Escande <thierry.escande@linaro.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2018-05-30 08:12:17 +02:00
Sara Sharon
fabdcc2ecd iwlwifi: mvm: drop UNKNOWN security type frames
In some cases we may get from FW errored frames with
UNKNOWN security type.

This may happen in unsecured aggregation flow, where
the first packet had a CRC error in the WEP bit, which
was followed by a failure to decrypt and was dropped.

The next frames in the aggregation "inherit" the bad metadata
of the first packet.

Make sure to drop such frames since RADA and other offloads
will not operate correctly which may have unexpected results.

In case of AP it also causes to TX AMSDU frames to the peers,
resulting with assert 0x104B.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2018-05-30 09:08:06 +03:00
Christoph Hellwig
fe4a97918d nvme-loop: add support for multiple ports
This is useful at least for multipath testing.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
2018-05-30 08:05:18 +02:00
Christoph Hellwig
90ea5ca45c nvme-pci: simplify __nvme_submit_cmd
With recent CQ handling improvements we can now move the locking into
__nvme_submit_cmd.  Also remove the local tail variable to make the code
more obvious, remove the __ prefix in the name, and fix the comments
describing the function.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
2018-05-30 08:04:26 +02:00
Keith Busch
b9cac43c2c nvme-pci: Rate limit the nvme timeout warnings
The block layer's timeout handling currently prevents drivers from
completing commands outside the timeout callback once blk-mq decides
they've expired. If a device breaks, this could potentially create many
thousands of timed out commands. There's nothing of value to be gleaned
from observing each of those messages, so this patch adds a rate limit
on them.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-05-30 08:04:25 +02:00
James Smart
ab4f47a9f4 nvme: allow duplicate controller if prior controller being deleted
The current checks for whether a new controller request "matches" an
existing controller ignores controller state and checks identity strings.
There are cases where an existing controller may be in its last steps of
deletion when they are "matched" by a new connection.

Change the behavior so that the new connection ignores controllers that
are deleted.

Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-05-30 08:03:23 +02:00
Ingo Molnar
52f2b34f46 Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU fix from Paul E. McKenney:

 "This additional v4.18 pull request contains a single commit that fell
  through the cracks:

      Provide early rcu_cpu_starting() callback for the benefit of the
      x86/mtrr code, which needs RCU to be available on incoming CPUs
      earlier than has been the case in the past."

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-05-30 07:55:39 +02:00
Hui Wang
986376b68d ALSA: hda/realtek - Enable mic-mute hotkey for several Lenovo AIOs
We have several Lenovo AIOs like M810z, M820z and M920z, they have
the same design for mic-mute hotkey and led and they use the same
codec with the same pin configuration, so use the pin conf table to
apply fix to all of them.

Fixes: 29693efcea ("ALSA: hda - Fix micmute hotkey problem for a lenovo AIO machine")
Cc: <stable@vger.kernel.org>
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-05-30 07:49:00 +02:00
Linus Torvalds
0044cdeb73 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
 "We are switching a bunch of Lenovo devices with Synaptics touchpads
  from PS/2 emulation over to native RMI/SMbus.

  Given that all commits are marked for stable there is no point
  delaying them till next release"

[ Also fix a too-small stack array for i2c communication in elan driver ]

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: elan_i2c_smbus - fix corrupted stack
  Input: synaptics - add Lenovo 80 series ids to SMBus
  Input: synaptics - add Intertouch support on X1 Carbon 6th and X280
  Input: synaptics - Lenovo Thinkpad X1 Carbon G5 (2017) with Elantech trackpoints should use RMI
  Input: synaptics - Lenovo Carbon X1 Gen5 (2017) devices should use RMI
2018-05-29 22:22:15 -05:00
Al Viro
1da92779e2 aio: sanitize the limit checking in io_submit(2)
as it is, the logics in native io_submit(2) is "if asked for
more than LONG_MAX/sizeof(pointer) iocbs to submit, don't
bother with more than LONG_MAX/sizeof(pointer)" (i.e.
512M requests on 32bit and 1E requests on 64bit) while
compat io_submit(2) goes with "stop after the first
PAGE_SIZE/sizeof(pointer) iocbs", i.e. 1K or so.  Which is
	* inconsistent
	* *way* too much in native case
	* possibly too little in compat one
and
	* wrong anyway, since the natural point where we
ought to stop bothering is ctx->nr_events

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2018-05-29 23:20:17 -04:00
Al Viro
67ba049f94 aio: fold do_io_submit() into callers
get rid of insane "copy array of 32bit pointers into an array of
native ones" glue.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2018-05-29 23:19:29 -04:00
Al Viro
95af8496ac aio: shift copyin of iocb into io_submit_one()
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2018-05-29 23:18:31 -04:00
Al Viro
d2988bd412 aio_read_events_ring(): make a bit more readable
The logics for 'avail' is
	* not past the tail of cyclic buffer
	* no more than asked
	* not past the end of buffer
	* not past the end of a page

Unobfuscate the last part.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2018-05-29 23:18:17 -04:00
Al Viro
9061d14a8a aio: all callers of aio_{read,write,fsync,poll} treat 0 and -EIOCBQUEUED the same way
... so just make them return 0 when caller does not need to destroy iocb

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2018-05-29 23:17:40 -04:00
Al Viro
3c96c7f4ca aio: take list removal to (some) callers of aio_complete()
We really want iocb out of io_cancel(2) reach before we start tearing
it down.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2018-05-29 23:16:43 -04:00
Dave Airlie
568cf2e6aa Merge tag 'drm-amdkfd-next-2018-05-28' of git://people.freedesktop.org/~gabbayo/linux into drm-next
- Build amdkfd's related files inside amdgpu only if amdkfd is built
- Fix compile warning
- Print info message in case ASIC is not supported by amdkfd

Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180528110435.GA17960@odedg-x270
2018-05-30 11:12:22 +10:00
Dave Airlie
74860cbfdd Add more HW overlays support
- It enables hardware overlay number 4 and 5. For this,
   this patch series adds required clocks.
 
 Several fixups
 - Fix default value of zpos according to real hardware overlay number.
 - Fix error value of exynos_Drm_crtc_get_by_type function correctly.
 - Fix static checker warning of scaler_task_done function.
 - Fix signedness bug in fimc_setup_clocks function.
 
 One cleanup
 - Disable framedone interrupt of DSI device which is not required.
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Merge tag 'exynos-drm-next-for-v4.18-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next

Add more HW overlays support
- It enables hardware overlay number 4 and 5. For this,
  this patch series adds required clocks.

Several fixups
- Fix default value of zpos according to real hardware overlay number.
- Fix error value of exynos_Drm_crtc_get_by_type function correctly.
- Fix static checker warning of scaler_task_done function.
- Fix signedness bug in fimc_setup_clocks function.

One cleanup
- Disable framedone interrupt of DSI device which is not required.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1527229919-25665-1-git-send-email-inki.dae@samsung.com
2018-05-30 11:05:35 +10:00
Dave Airlie
2b85352e3b Merge branch 'drm-fixes-4.17' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
One last fix for 4.17.  Fix a suspend regression in DC.

* 'drm-fixes-4.17' of git://people.freedesktop.org/~agd5f/linux:
  drm/amd/display: Fix BUG_ON during CRTC atomic check update
2018-05-30 10:58:31 +10:00
Dave Airlie
ebb442bb35 core: Add 220us psr setup time (Dhinakaran)
omap: Fix NULL deref (Tomi)
 
 Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
 Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Merge tag 'drm-misc-fixes-2018-05-29' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

core: Add 220us psr setup time (Dhinakaran)
omap: Fix NULL deref (Tomi)

Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>

* tag 'drm-misc-fixes-2018-05-29' of git://anongit.freedesktop.org/drm/drm-misc:
  drm/omap: fix NULL deref crash with SDI displays
  drm/psr: Fix missed entry in PSR setup time table.
2018-05-30 10:57:57 +10:00
Or Gerlitz
01252a2783 net/mlx5e: Get the number of offloaded TC rules from the correct table
As we keep the offloaded TC rules for NIC and e-switch in two different
places, make sure to return the number of offloaded flows according
to the use-case and not blindly from the priv.

Fixes: 655dc3d2b9 ('net/mlx5e: Use shared table for offloaded TC eswitch flows')
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reported-by: Paul Blakey <paulb@mellanox.com>
Reviewed-by: Paul Blakey <paulb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-05-29 17:27:50 -07:00
Ilya Lesokhin
36dd490200 net/mlx5: FPGA, Call DMA unmap with the right size
When mlx5_fpga_conn_unmap_buf is called buf->sg[0].size
should equal the actual buffer size, not the message size.
Otherwise we will trigger the following dma debug warning
"DMA-API: device driver frees DMA memory with different size"

Fixes: 537a505741 ('net/mlx5: FPGA, Add high-speed connection routines')
Signed-off-by: Ilya Lesokhin <ilyal@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-05-29 17:27:50 -07:00