Commit graph

766,102 commits

Author SHA1 Message Date
Bhadram Varka
9df50ba76a arm64: tegra: Make BCM89610 PHY interrupt as active low
Need to configure PHY interrupt as active low for P3310 Tegra186
platform otherwise it results in spurious interrupts.

This issue wasn't seen before because the generic PHY driver without
interrupt support was used.

Signed-off-by: Bhadram Varka <vbhadram@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-03 11:48:16 +02:00
Daniel Vetter
aee1a37d0f dma-fence: remove fill_driver_data callback
Noticed while I was typing docs. Entirely unused.

v2: Remove reference in @timeline_value_str too. While at it clarify
why timeline_value_str has a fence parameter - we don't have an
explicit timeline structure unfortunately.

Cc: Eric Anholt <eric@anholt.net>
Reviewed-by: Christian König <christian.koenig@amd.com> (v1)
Reviewed-by: Eric Anholt <eric@anholt.net>
Cc: Christian König <christian.koenig@amd.com> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180502082359.30345-1-daniel.vetter@ffwll.ch
2018-05-03 11:47:42 +02:00
Marcel Ziswiler
b036a75aae ARM: tegra: apalis-tk1: Fix high speed UART compatible
Turns out the compatible "nvidia,tegra124-hsuart" does not (yet) exist
and everybody else also uses it only in conjunction with
"nvidia,tegra30-hsuart".

Reported-by: Martin Šafařík <msafarik@retia.cz>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-03 11:44:35 +02:00
Chris Wilson
e21b141376 drm/i915: Mark the hangcheck as idle when unparking the engines
As we unpark the engines and are about to begin a new cycle of activity,
mark the current status of the hangceck as idle so that we avoid
carrying over a stale timestamp/action into the next cycle.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180502220313.6459-2-chris@chris-wilson.co.uk
2018-05-03 10:43:46 +01:00
Chris Wilson
ea491b23b2 drm/i915: Reset the hangcheck timestamp before repeating a seqno
In the unusual circumstance where we reuse a seqno (for example, in
igt), make sure that we reset the hangcheck timestamp before it sees the
same seqno again.

References: https://bugs.freedesktop.org/show_bug.cgi?id=106215
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180502220313.6459-1-chris@chris-wilson.co.uk
2018-05-03 10:43:45 +01:00
Fabio Estevam
051529d0c0 mtd: maps: pismo: Remove owner assignment from i2c_driver
Structure i2c_driver does not need to set the owner field, as this will
be populated by the driver core.

Generated by scripts/coccinelle/api/platform_no_drv_owner.cocci.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-05-03 11:42:31 +02:00
Daniel Vetter
190c462d5b drm/vmwgfx: Drop DRM_CONTROL_ALLOW
Control nodes are no more!

Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: VMware Graphics <linux-graphics-maintainer@vmware.com>
Cc: Sinclair Yeh <syeh@vmware.com>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180420065159.4531-3-daniel.vetter@ffwll.ch
2018-05-03 11:28:02 +02:00
Daniel Vetter
0cd54b0395 drm/i915: Drop DRM_CONTROL_ALLOW
Control nodes are no more!

Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: intel-gfx@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20180420065159.4531-2-daniel.vetter@ffwll.ch
2018-05-03 11:28:02 +02:00
Daniel Vetter
5bb562f829 drm: Drop DRM_CONTROL_ALLOW from ioctls
We've disabled control nodes in

commit 8a357d1004
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Fri Oct 28 10:10:50 2016 +0200

    drm: Nerf DRM_CONTROL nodes

and there was only a minor uapi break that we've paper over with

commit 6449b088dd
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Fri Dec 9 14:56:56 2016 +0100

    drm: Add fake controlD* symlinks for backwards compat

Since then Keith has also added real control nodes with a
proper&useable uapi in the form of drm leases.

It's time to remove the control node leftovers.

Cc: Keith Packard <keithp@keithp.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: David Airlie <airlied@linux.ie>
Link: https://patchwork.freedesktop.org/patch/msgid/20180420065159.4531-1-daniel.vetter@ffwll.ch
2018-05-03 11:28:02 +02:00
Chris Wilson
e01569ab96 drm/i915: Silence debugging DRM_ERROR for failing to suspend vlv powerwells
If we try to suspend a wedged device following a GPU reset failure, we
will also fail to turn off the rc6 powerwells (on vlv), leading to a
*ERROR*. This is quite expected in this case, so the best we can do is
shake our heads and reduce the *ERROR* to a debug so CI stops
complaining.

Testcase: igt/gem_eio/in-flight-suspend #vlv
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105583
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180409094905.4516-1-chris@chris-wilson.co.uk
2018-05-03 10:06:42 +01:00
Frank Mori Hess
1d48745b19 dmaengine: pl330: flush before wait, and add dev burst support.
Do DMAFLUSHP _before_ the first DMAWFP to ensure controller
and peripheral are in agreement about dma request state before first
transfer.  Add support for burst transfers to/from peripherals. In the new
scheme, the controller does as many burst transfers as it can then
transfers the remaining dregs with either single transfers for
peripherals, or with a reduced size burst for memory-to-memory transfers.

Signed-off-by: Frank Mori Hess <fmh6jj@gmail.com>
Tested-by: Frank Mori Hess <fmh6jj@gmail.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-05-03 14:31:56 +05:30
Takashi Iwai
207459a280 ALSA: sparc: Use GFP_KERNEL for non-atomic allocation
dbri driver allocates a resource with GFP_ATOMIC unnecessarily in its
probe function.  Replace it with the standard GFP_KERNEL for avoiding
the bogus allocation failures.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-05-03 10:53:39 +02:00
Chris Wilson
b9b7742687 drm/i915/execlists: Emit i915_trace_request_out for preemption
Move the tracepoint into the common execlists_context_schedule_out() and
call it from preemption completion as well. A small bit of refactoring
code should help with when tracing, or else we end up with requests
mysteriously disappearing and some being emitted to HW multiple times.

Reported-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180502230202.6848-1-chris@chris-wilson.co.uk
2018-05-03 09:39:26 +01:00
Ulf Hansson
5581cfcdcc Merge branch 'sdhci_omap' into next
Merge immutable branch for sdhci-omap to add UHS/HS200 mode support.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-03 10:34:06 +02:00
Shawn Lin
bfd694d5e2 mmc: core: Add tunable delay before detecting card after card is inserted
Allow to use tunable delay before detecting card after card is inserted,
which either comes from firmware node, or comes from debounce value
passed on to mmc_gpiod_request_cd(). If the platform doesn't support
debounce, then we fall back to use the debounce period as the delay,
otherwise, it behaves the same as before that a HW debounce(if set) plus
a 200ms hardcode delay before detecting the card.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-03 10:33:52 +02:00
Shawn Lin
52a70098ff mmc: dt-bindings: Add optional cd-debounce-delay-ms
cd-gpios uses a fixed delay, 200ms, before detecting card after the card
is inserted. 200ms doesn't work for some platforms, so some host drivers
added their own properties for parsing that from DT, for instance,
dw_mmc and pxamci. That being said, it should also be tunable when using
cd-gpios.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-03 10:33:51 +02:00
Zygmunt Krynicki
3107e8cb92 apparmor: fix typo "preconfinement"
Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Acked-by: Christian Boltz <apparmor@cboltz.de>
Signed-off-by: John Johansen <john.johansen@canonical.com>
2018-05-03 00:50:46 -07:00
Zygmunt Krynicki
68a1a0c68c apparmor: fix typo "independent"
Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Acked-by: Christian Boltz <apparmor@cboltz.de>
Signed-off-by: John Johansen <john.johansen@canonical.com>
2018-05-03 00:50:30 -07:00
Zygmunt Krynicki
5d2371e123 apparmor: fix typo "traverse"
Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Acked-by: Christian Boltz <apparmor@cboltz.de>
Signed-off-by: John Johansen <john.johansen@canonical.com>
2018-05-03 00:50:12 -07:00
Zygmunt Krynicki
69ad4a44a2 apparmor: fix typo "type"
Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Acked-by: Christian Boltz <apparmor@cboltz.de>
Signed-off-by: John Johansen <john.johansen@canonical.com>
2018-05-03 00:49:56 -07:00
Zygmunt Krynicki
b62fb22674 apparmor: fix typo "replace"
Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Acked-by: Christian Boltz <apparmor@cboltz.de>
Signed-off-by: John Johansen <john.johansen@canonical.com>
2018-05-03 00:49:35 -07:00
Zygmunt Krynicki
a18f902888 apparmor: fix typo "comparison"
Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Acked-by: Christian Boltz <apparmor@cboltz.de>
Signed-off-by: John Johansen <john.johansen@canonical.com>
2018-05-03 00:48:58 -07:00
Zygmunt Krynicki
b2c2086c39 apparmor: fix typo "loosen"
Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Acked-by: Christian Boltz <apparmor@cboltz.de>
Signed-off-by: John Johansen <john.johansen@canonical.com>
2018-05-03 00:47:56 -07:00
Kishon Vijay Abraham I
3f40287802 mmc: sdhci-omap: Get IODelay values for 3.3v DDR mode
commit 8d20b2eae6 ("mmc: sdhci_omap: Add support to set
IODELAY values") stored IODelay values for all MM/SD modes
in pinctrl_state structure member of sdhci_omap_host. However for
DDR mode it gets IODelay values only for 1.8v DDR mode. Since some of
the platforms which uses sdhci-omap has IO lines connected to 3.3v,
get IODelay values for 3.3v DDR mode.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-03 09:37:13 +02:00
Kishon Vijay Abraham I
75b732d570 dt-bindings: sdhci-omap: Add pinctrl bindings
Add pinctrl binding rquired to get the mux mode and IODelay
values from devicetree.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-03 09:37:12 +02:00
Kishon Vijay Abraham I
efde12b246 mmc: sdhci-omap: Add sdhci_omap specific ops for enable_sdio_irq
Add sdhci_omap_enable_sdio_irq to set CTPL and CLKEXTFREE bits in
MMCHS_CON register required to detect asynchronous card interrupt
on DAT[1].

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-03 09:37:12 +02:00
Kishon Vijay Abraham I
6d75df75ab mmc: sdhci-omap: Add support for MMC/SD controller in k2g SoC
Add support for the new compatible added specifically to support
k2g's MMC/SD controller.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-03 09:37:12 +02:00
Kishon Vijay Abraham I
3031ec961d dt-bindings: sdhci-omap: Add K2G specific binding
Add binding for the TI's sdhci-omap controller present in K2G.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-03 09:37:11 +02:00
Kishon Vijay Abraham I
25f80d8605 mmc: sdhci-omap: Workaround for Errata i834
Errata i834 in AM572x Sitara Processors Silicon Revision 2.0, 1.1
(SPRZ429K July 2014–Revised March 2017 [1]) mentions the maximum
obtainable timeout through MMC host controller is 700ms. And for
commands taking longer than 700ms, hardware timeout should be
disabled and software timeout should be used.

The workaround for Errata i834 can be achieved by adding
SDHCI_QUIRK2_DISABLE_HW_TIMEOUT quirk in sdhci-omap.

[1] -> http://www.ti.com/lit/er/sprz429k/sprz429k.pdf

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-03 09:37:11 +02:00
Kishon Vijay Abraham I
fc1fa1b7db mmc: sdhci: Program a relatively accurate SW timeout value
sdhci has a 10 second timeout to catch devices that stop responding.
In the case of quirk SDHCI_QUIRK2_DISABLE_HW_TIMEOUT, instead of
programming 10 second arbitrary value, calculate the total time it would
take for the entire transfer to happen and program the timeout value
accordingly.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-03 09:36:20 +02:00
Adrian Hunter
0bb28d738f mmc: sdhci: Factor out target_timeout calculation
Factor out the target_timeout calculation so it can be re-used.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-03 09:36:20 +02:00
Adrian Hunter
a999fd9392 mmc: sdhci: Add quirk to disable HW timeout
Add quirk to disable HW timeout if the requested timeout is more than the
maximum obtainable timeout.

Also, if the quirk is set and ->get_max_timeout_count() is not implemented,
max_busy_timeout is set to zero.

Based-on-patch-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-03 09:36:19 +02:00
Kishon Vijay Abraham I
c16bc9a767 mmc: sdhci: Disable 1.8v modes (HS200/HS400/UHS) if controller can't support 1.8v
The SDHCI controller in a SoC might support HS200/HS400 (indicated
using mmc-hs200-1_8v/mmc-hs400-1_8v dt property), but if the board is
modeled such that the IO lines are not connected to 1.8v then
HS200/HS400 cannot be supported. Disable HS200/HS400 if the board
does not have 1.8v connected to the IO lines. Also Disable DDR/UHS in 1.8v
if the IO lines are not connected to 1.8v.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-03 09:36:19 +02:00
Kishon Vijay Abraham I
1d3a2220c2 mmc: sdhci-omap: Invoke sdhci_get_of_property to read sdhci dt properties
Invoke sdhci_get_of_property defined in sdhci-pltfm.c to read
sdhci specific properties from dt node.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-03 09:36:18 +02:00
Kishon Vijay Abraham I
212f4f8a44 mmc: sdhci-omap: Workaround for Errata i843
Errata i843 in AM572x Sitara Processors Silicon Revision 2.0, 1.1
(SPRZ429K July 2014–Revised March 2017 [1]) mentions
PG 1.0/1.1 silicon has limitations w.r.t frequencies at which MMC1/2/3
can operate.

Use soc_device_match() to identify rev 1.0/1.1 silicon and
override mmc->f_max according to the errata workaround.
"max-frequency" dt property cannot be used since the device
tree is added for rev 2.0 silicon.

soc_device_match() is also used in order to get the IODelay values
for rev 1.0/1.1 silicon.

[1] -> http://www.ti.com/lit/er/sprz429k/sprz429k.pdf

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-03 09:35:21 +02:00
Kishon Vijay Abraham I
5bc2bda54d mmc: sdhci-omap: Remove setting ADMA capability in driver
sdhci can directly get ADMA capability from MMCHS_CAPA register.
Remove explicitly setting ADMA here as some instances might not have
ADMA enabled. (sdhci_read_caps() is also removed from here since
sdhci_setup_host() invokes it).

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-03 09:35:21 +02:00
Kishon Vijay Abraham I
0ec4ee3c9b mmc: sdhci-omap: Fix when capabilities are obtained from SDHCI_CAPABILITIES reg
sdhci_omap_config_iodelay_pinctrl_state() requires caps and caps2 to be
initialized (speed mode capabilities like UHS/HS200) before it is
invoked. While mmc_of_parse() initializes caps/caps2 if capabilities is
populated in device tree, it will remain uninitialized for capabilities
obtained from SDHCI_CAPABILITIES register.
Fix sdhci_omap_config_iodelay_pinctrl_state() to be used even while
getting the capabilities from SDHCI_CAPABILITIES register by invoking
sdhci_setup_host() before sdhci_omap_config_iodelay_pinctrl_state().

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-03 09:35:21 +02:00
Peter Zijlstra
85f1abe001 kthread, sched/wait: Fix kthread_parkme() completion issue
Even with the wait-loop fixed, there is a further issue with
kthread_parkme(). Upon hotplug, when we do takedown_cpu(),
smpboot_park_threads() can return before all those threads are in fact
blocked, due to the placement of the complete() in __kthread_parkme().

When that happens, sched_cpu_dying() -> migrate_tasks() can end up
migrating such a still runnable task onto another CPU.

Normally the task will have hit schedule() and gone to sleep by the
time we do kthread_unpark(), which will then do __kthread_bind() to
re-bind the task to the correct CPU.

However, when we loose the initial TASK_PARKED store to the concurrent
wakeup issue described previously, do the complete(), get migrated, it
is possible to either:

 - observe kthread_unpark()'s clearing of SHOULD_PARK and terminate
   the park and set TASK_RUNNING, or

 - __kthread_bind()'s wait_task_inactive() to observe the competing
   TASK_RUNNING store.

Either way the WARN() in __kthread_bind() will trigger and fail to
correctly set the CPU affinity.

Fix this by only issuing the complete() when the kthread has scheduled
out. This does away with all the icky 'still running' nonsense.

The alternative is to promote TASK_PARKED to a special state, this
guarantees wait_task_inactive() cannot observe a 'stale' TASK_RUNNING
and we'll end up doing the right thing, but this preserves the whole
icky business of potentially migating the still runnable thing.

Reported-by: Gaurav Kohli <gkohli@codeaurora.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-05-03 07:38:05 +02:00
Peter Zijlstra
741a76b350 kthread, sched/wait: Fix kthread_parkme() wait-loop
Gaurav reported a problem with __kthread_parkme() where a concurrent
try_to_wake_up() could result in competing stores to ->state which,
when the TASK_PARKED store got lost bad things would happen.

The comment near set_current_state() actually mentions this competing
store, but only mentions the case against TASK_RUNNING. This same
store, with different timing, can happen against a subsequent !RUNNING
store.

This normally is not a problem, because as per that same comment, the
!RUNNING state store is inside a condition based wait-loop:

  for (;;) {
    set_current_state(TASK_UNINTERRUPTIBLE);
    if (!need_sleep)
      break;
    schedule();
  }
  __set_current_state(TASK_RUNNING);

If we loose the (first) TASK_UNINTERRUPTIBLE store to a previous
(concurrent) wakeup, the schedule() will NO-OP and we'll go around the
loop once more.

The problem here is that the TASK_PARKED store is not inside the
KTHREAD_SHOULD_PARK condition wait-loop.

There is a genuine issue with sleeps that do not have a condition;
this is addressed in a subsequent patch.

Reported-by: Gaurav Kohli <gkohli@codeaurora.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-05-03 07:38:04 +02:00
Vincent Guittot
457be908c8 sched/fair: Fix the update of blocked load when newly idle
With commit:

  31e77c93e4 ("sched/fair: Update blocked load when newly idle")

... we release the rq->lock when updating blocked load of idle CPUs.

This opens a time window during which another CPU can add a task to this
CPU's cfs_rq.

The check for newly added task of idle_balance() is not in the common path.
Move the out label to include this check.

Reported-by: Heiner Kallweit <hkallweit1@gmail.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 31e77c93e4 ("sched/fair: Update blocked load when newly idle")
Link: http://lkml.kernel.org/r/20180426103133.GA6953@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-05-03 07:38:03 +02:00
Peter Zijlstra
0b26351b91 stop_machine, sched: Fix migrate_swap() vs. active_balance() deadlock
Matt reported the following deadlock:

CPU0					CPU1

schedule(.prev=migrate/0)		<fault>
  pick_next_task()			  ...
    idle_balance()			    migrate_swap()
      active_balance()			      stop_two_cpus()
						spin_lock(stopper0->lock)
						spin_lock(stopper1->lock)
						ttwu(migrate/0)
						  smp_cond_load_acquire() -- waits for schedule()
        stop_one_cpu(1)
	  spin_lock(stopper1->lock) -- waits for stopper lock

Fix this deadlock by taking the wakeups out from under stopper->lock.
This allows the active_balance() to queue the stop work and finish the
context switch, which in turn allows the wakeup from migrate_swap() to
observe the context and complete the wakeup.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reported-by: Matt Fleming <matt@codeblueprint.co.uk>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Galbraith <umgwanakikbuti@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20180420095005.GH4064@hirez.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-05-03 07:38:03 +02:00
Linus Torvalds
f4ef6a438c Various fixes in tracing:
- Tracepoints should not give warning on OOM failures
 
  - Use special field for function pointer in trace event
 
  - Fix igrab issues in uprobes
 
  - Fixes to the new histogram triggers
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Merge tag 'trace-v4.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "Various fixes in tracing:

   - Tracepoints should not give warning on OOM failures

   - Use special field for function pointer in trace event

   - Fix igrab issues in uprobes

   - Fixes to the new histogram triggers"

* tag 'trace-v4.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracepoint: Do not warn on ENOMEM
  tracing: Add field modifier parsing hist error for hist triggers
  tracing: Add field parsing hist error for hist triggers
  tracing: Restore proper field flag printing when displaying triggers
  tracing: initcall: Ordered comparison of function pointers
  tracing: Remove igrab() iput() call from uprobes.c
  tracing: Fix bad use of igrab in trace_uprobe.c
2018-05-02 17:38:37 -10:00
Linus Torvalds
ecd649b340 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
 "Just a few driver fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: atmel_mxt_ts - add missing compatible strings to OF device table
  Input: atmel_mxt_ts - fix the firmware update
  Input: atmel_mxt_ts - add touchpad button mapping for Samsung Chromebook Pro
  MAINTAINERS: Rakesh Iyer can't be reached anymore
  Input: hideep_ts - fix a typo in Kconfig
  Input: alps - fix reporting pressure of v3 trackstick
  Input: leds - fix out of bound access
  Input: synaptics-rmi4 - fix an unchecked out of memory error path
2018-05-02 17:34:42 -10:00
Fabio Estevam
122e1bac76 ARM: dts: imx6qdl: Remove #address/#size-cells from mipi_dsi
Remove unnecessary #address-cells/#size-cells to fix the following
DTC warnings:

arch/arm/boot/dts/imx6dl-apf6dev.dtb: Warning (avoid_unnecessary_addr_size): /soc/aips-bus@2100000/mipi@21e0000: unnecessary #address-cells/#size-cells without "ranges" or child "reg" property

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2018-05-03 11:15:11 +08:00
Julian Anastasov
94720e3aee ipv4: fix fnhe usage by non-cached routes
Allow some non-cached routes to use non-expired fnhe:

1. ip_del_fnhe: moved above and now called by find_exception.
The 4.5+ commit deed49df73 expires fnhe only when caching
routes. Change that to:

1.1. use fnhe for non-cached local output routes, with the help
from (2)

1.2. allow __mkroute_input to detect expired fnhe (outdated
fnhe_gw, for example) when do_cache is false, eg. when itag!=0
for unicast destinations.

2. __mkroute_output: keep fi to allow local routes with orig_oif != 0
to use fnhe info even when the new route will not be cached into fnhe.
After commit 839da4d989 ("net: ipv4: set orig_oif based on fib
result for local traffic") it means all local routes will be affected
because they are not cached. This change is used to solve a PMTU
problem with IPVS (and probably Netfilter DNAT) setups that redirect
local clients from target local IP (local route to Virtual IP)
to new remote IP target, eg. IPVS TUN real server. Loopback has
64K MTU and we need to create fnhe on the local route that will
keep the reduced PMTU for the Virtual IP. Without this change
fnhe_pmtu is updated from ICMP but never exposed to non-cached
local routes. This includes routes with flowi4_oif!=0 for 4.6+ and
with flowi4_oif=any for 4.14+).

3. update_or_create_fnhe: make sure fnhe_expires is not 0 for
new entries

Fixes: 839da4d989 ("net: ipv4: set orig_oif based on fib result for local traffic")
Fixes: d6d5e999e5 ("route: do not cache fib route info on local routes with oif")
Fixes: deed49df73 ("route: check and remove route cache when we get route")
Cc: David Ahern <dsahern@gmail.com>
Cc: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-02 22:52:35 -04:00
Linus Torvalds
3b6f979319 SCSI fixes on 20180502
Three small bug fixes: an illegally overlapping memcmp in target code,
 a potential infinite loop in isci under certain rare phy conditions
 and an ATA queue depth (performance) correction for storvsc.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Three small bug fixes: an illegally overlapping memcmp in target code,
  a potential infinite loop in isci under certain rare phy conditions
  and an ATA queue depth (performance) correction for storvsc"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: target: Fix fortify_panic kernel exception
  scsi: isci: Fix infinite loop in while loop
  scsi: storvsc: Set up correct queue depth values for IDE devices
2018-05-02 16:38:17 -10:00
Dave Airlie
1e5fbc0b8d vc4: Fix bo refcounts during async commits (Boris)
vga-dac: Fix edid memory leak (Sean)
 
 Cc: Boris Brezillon <boris.brezillon@bootlin.com>
 Cc: Sean Paul <seanpaul@chromium.org>
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Merge tag 'drm-misc-fixes-2018-05-02' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

vc4: Fix bo refcounts during async commits (Boris)
vga-dac: Fix edid memory leak (Sean)

Cc: Boris Brezillon <boris.brezillon@bootlin.com>
Cc: Sean Paul <seanpaul@chromium.org>

* tag 'drm-misc-fixes-2018-05-02' of git://anongit.freedesktop.org/drm/drm-misc:
  drm/bridge: vga-dac: Fix edid memory leak
  drm/vc4: Make sure vc4_bo_{inc,dec}_usecnt() calls are balanced
2018-05-03 11:58:39 +10:00
Dave Airlie
083faae152 Merge tag 'drm-intel-fixes-2018-05-02' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
Add DMC firmware for Geminilake.

* tag 'drm-intel-fixes-2018-05-02' of git://anongit.freedesktop.org/drm/drm-intel:
  drm/i915/glk: Add MODULE_FIRMWARE for Geminilake
2018-05-03 11:58:19 +10:00
Fabio Estevam
165a30e431
ASoC: fsl_spdif: Switch to SPDX identifier
Adopt the SPDX license identifier headers to ease license compliance
management.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-05-03 10:29:14 +09:00
Fabio Estevam
3b5af9f116
ASoC: fsl_esai: Switch to SPDX identifier
Adopt the SPDX license identifier headers to ease license compliance
management.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-05-03 10:29:05 +09:00