Commit graph

766,498 commits

Author SHA1 Message Date
Sebastian Reichel
5198a48381 Merge branch 'psy-fixes' into psy-next
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2018-08-16 22:19:22 +02:00
Liu Xiang
3d779180c6 power: supply: bq27xxx: Update comments
The URL of bq27441-g1 and bq27426 are missing and bq27520-g4 is duplicated.

Signed-off-by: Liu Xiang <liu.xiang6@zte.com.cn>
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Acked-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-24 11:58:50 +02:00
Gustavo A. R. Silva
cc44ba9116 power: supply: max77693_charger: fix unintentional fall-through
It seems that a *break* is missing in order to avoid a fall-through.
Otherwise, the calculation of *data* makes no sense.

Addresses-Coverity-ID: 1271172 ("Missing break in switch")
Fixes: 87c2d90678 ("power: max77693: Add charger driver for Maxim 77693")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-23 00:14:49 +02:00
Gustavo A. R. Silva
37bab356f8 power: supply: mark expected switch fall-throughs
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 1394724 ("Missing break in switch")
Addresses-Coverity-ID: 114958 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-23 00:10:47 +02:00
David Lechner
9c7272412b power: supply: lego_ev3_battery: fix Vce offset
This fixes the value that accounts for the Vce of a transistor in the
LEGO MINDSTORMS EV3 power supply driver. The old value (200mV) was the
max value from the data sheet. After testing, the actual value has been
found to be 50mV. By using 50mV we get a more accurate voltage
indication.

Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-22 23:33:43 +02:00
David Lechner
6e92cecb1e power: supply: lego_ev3_battery: Don't ignore iio_read_channel_processed() return value
This changes the LEGO MINDSTORMS EV3 power supply driver to return an
error if iio_read_channel_processed() fails.

Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-22 23:33:43 +02:00
Sebastian Reichel
0d94990527 Immutable branch for moving ds2760 driver from w1 to power supply
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Merge tag 'ds2760-for-v4.19-signed' into psy-next

Immutable branch for moving ds2760 driver from w1 to power supply

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-22 23:33:24 +02:00
Daniel Mack
efdafd6895 power: supply: ds2760_battery: add devicetree probing
Add a matching table for devicetree probing, and optionally set the module
parameter variables from DT properties.

Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-11 18:09:09 +02:00
Daniel Mack
bf49735537 power: supply: ds2760_battery: merge ds2760 supply driver with its w1 slave companion
This patch removes the w1 slave driver that used to register the w1 family
and instanciate a platform device at runtime. The code now lives in the
supply driver instead to avoid that level of indirection.

The old device name "ds2760-battery.0" is preserved, so userspace
applications can access the same virtual device nodes as before.

Note that because the w1 core does not currently have a framework for
suspend/resume, the driver now registers a PM notifier callback.

Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-11 18:09:09 +02:00
Daniel Mack
fae68031f7 w1: core: match sub-nodes of bus masters in devicetree
Once a new slave device is detected, match it against all sub-nodes of the
master bus controller. If a match is found, set the slave device's of_node
pointer.

Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-11 18:09:08 +02:00
Daniel Mack
da0a5d99b1 dt-bindings: w1: document bindings for ds2760 battery monitor
This patch adds the devicetree bindings for Maxim's ds2760 battery
monitors.

Signed-off-by: Daniel Mack <daniel@zonque.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-11 18:08:55 +02:00
Daniel Mack
dfa32e119d dt-bindings: w1: document generic onewire bindings
This patch adds a generic w1 bindings document that describes how w1
slave deviceses are grouped under master nodes. It also augments the
existing w1-gpio.txt document a bit.

Signed-off-by: Daniel Mack <daniel@zonque.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-11 18:08:32 +02:00
Dan Carpenter
89b135ba1b power: supply: adp5061: Fix a couple off by ones
We end up reading one element beyond the end of the adp5061_vmax[] array
here.

Fixes: fe8e81b7e8 ("adp5061: New driver for ADP5061 I2C battery charger")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-11 12:00:24 +02:00
Vinod Koul
7914c67667 dt-bindings: power: reset: qcom: Add resin binding
Resin is similar to pwrkey, add the description and example
for resin bindings

Signed-off-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-07 22:22:23 +02:00
Stefan Popa
fe8e81b7e8 adp5061: New driver for ADP5061 I2C battery charger
This patch adds basic support for Analog Devices I2C programmable linear
battery charger.

With this driver, some parameters can be read and configured such as:
* trickle charge current level (PRECHARGE_CURRENT)
* trickle charge voltage threshold (VOLTAGE_MIN)
* weak charge threshold (VOLTAGE_AVG)
* constant current (CONSTANT_CHARGE_CURRENT)
* constant charge voltage limit (CONSTANT_CHARGE_VOLTAGE_MAX)
* battery full (CAPACITY_LEVEL)
* input current limit (INPUT_CURRENT_LIMIT)
* charger status (STATUS)
* battery status (CAPACITY_LEVEL)
* termination current (CHARGE_TERM_CURRENT)

Datasheet:
http://www.analog.com/media/en/technical-documentation/data-sheets/ADP5061.pdf

Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-06 19:36:14 +02:00
H. Nikolaus Schaller
a427503eda power: generic-adc-battery: check for duplicate properties copied from iio channels
If an iio channel defines a basic property, there are duplicate entries
in /sys/class/power/*/uevent.

So add a check to avoid duplicates. Since all channels may be duplicates,
we have to modify the related error check.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Cc: stable@vger.kernel.org
Fixes: e60fea794e ("power: battery: Generic battery driver using IIO")
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-06 18:58:44 +02:00
H. Nikolaus Schaller
932d47448c power: generic-adc-battery: fix out-of-bounds write when copying channel properties
We did have sporadic problems in the pinctrl framework during boot
where a pin group name unexpectedly became NULL leading to a NULL
dereference in strcmp.

Detailled analysis of the failing cases did reveal that there were
two devm allocated objects close to each other. The second one was
the affected group_desc in pinmux and the first one was the
psy_desc->properties buffer of the gab driver.

Review of the gab code showed that the address calculation for
one memcpy() is wrong. It does

	properties + sizeof(type) * index

but C is defined to do the index multiplication already for
pointer + integer additions. Hence the factor was applied twice
and the memcpy() does write outside of the properties buffer.
Sometimes it happened to be the pinctrl and triggered the strcmp(NULL).

Anyways, it is overkill to use a memcpy() here instead of a simple
assignment, which is easier to read and has less risk for wrong
address calculations. So we change code to a simple assignment.

If we initialize the index to the first free location, we can even
remove the local variable 'properties'.

This bug seems to exist right from the beginning in 3.7-rc1 in

commit e60fea794e ("power: battery: Generic battery driver using IIO")

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Cc: stable@vger.kernel.org
Fixes: e60fea794e ("power: battery: Generic battery driver using IIO")
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-06 18:40:34 +02:00
Hans de Goede
f2a42595f0 power: supply: axp288_charger: Fix initial constant_charge_current value
We should look at val which contains the value read from the register,
not ret which is always 0 on a successful read.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Fixes: eac53b3664 ("power: supply: axp288_charger: Drop platform_data dependency")
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-06 17:19:37 +02:00
Arnd Bergmann
8b0d62d49a power: supply: ab8500: stop using getnstimeofday64()
getnstimeofday64() is deprecated in favor of the ktime_get() family.

The direct replacement would be ktime_get_real_ts64(), but we only need
the seconds value, and it seems better to use boottime than real time
to avoid unexpected behavior with a concurrent settimeofday().

ktime_get_seconds() might also work, but it seems better to use
boottime than monotonic time since I assume that the charging
process continues during suspend.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-06 16:58:02 +02:00
Linus Walleij
ada1de89f3 power: gemini-poweroff: Avoid more spurious poweroffs
Even after the previous fix I have experienced more spurious
poweroffs on the gemini SoC. After this fix it finally seems
to go away.

Fixes: f7a388d6cd ("power: reset: Add a driver for the Gemini poweroff")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-06 16:34:01 +02:00
Sudeep Holla
09bebb1adb power: vexpress: fix corruption in notifier registration
Vexpress platforms provide two different restart handlers: SYS_REBOOT
that restart the entire system, while DB_RESET only restarts the
daughter board containing the CPU. DB_RESET is overridden by SYS_REBOOT
if it exists.

notifier_chain_register used in register_restart_handler by design
relies on notifiers to be registered once only, however vexpress restart
notifier can get registered twice. When this happen it corrupts list
of notifiers, as result some notifiers can be not called on proper
event, traverse on list can be cycled forever, and second unregister
can access already freed memory.

So far, since this was the only restart handler in the system, no issue
was observed even if the same notifier was registered twice. However
commit 6c5c0d48b6 ("watchdog: sp805: add restart handler") added
support for SP805 restart handlers and since the system under test
contains two vexpress restart and two SP805 watchdog instances, it was
observed that during the boot traversing the restart handler list looped
forever as there's a cycle in that list resulting in boot hang.

This patch fixes the issues by ensuring that the notifier is installed
only once.

Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Fixes: 46c99ac662 ("power/reset: vexpress: Register with kernel restart handler")
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-06 16:23:45 +02:00
Benjamin Tissoires
3ffa6583e2 power: remove possible deadlock when unregistering power_supply
If a device gets removed right after having registered a power_supply node,
we might enter in a deadlock between the remove call (that has a lock on
the parent device) and the deferred register work.

Allow the deferred register work to exit without taking the lock when
we are in the remove state.

Stack trace on a Ubuntu 16.04:

[16072.109121] INFO: task kworker/u16:2:1180 blocked for more than 120 seconds.
[16072.109127]       Not tainted 4.13.0-41-generic #46~16.04.1-Ubuntu
[16072.109129] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[16072.109132] kworker/u16:2   D    0  1180      2 0x80000000
[16072.109142] Workqueue: events_power_efficient power_supply_deferred_register_work
[16072.109144] Call Trace:
[16072.109152]  __schedule+0x3d6/0x8b0
[16072.109155]  schedule+0x36/0x80
[16072.109158]  schedule_preempt_disabled+0xe/0x10
[16072.109161]  __mutex_lock.isra.2+0x2ab/0x4e0
[16072.109166]  __mutex_lock_slowpath+0x13/0x20
[16072.109168]  ? __mutex_lock_slowpath+0x13/0x20
[16072.109171]  mutex_lock+0x2f/0x40
[16072.109174]  power_supply_deferred_register_work+0x2b/0x50
[16072.109179]  process_one_work+0x15b/0x410
[16072.109182]  worker_thread+0x4b/0x460
[16072.109186]  kthread+0x10c/0x140
[16072.109189]  ? process_one_work+0x410/0x410
[16072.109191]  ? kthread_create_on_node+0x70/0x70
[16072.109194]  ret_from_fork+0x35/0x40
[16072.109199] INFO: task test:2257 blocked for more than 120 seconds.
[16072.109202]       Not tainted 4.13.0-41-generic #46~16.04.1-Ubuntu
[16072.109204] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[16072.109206] test            D    0  2257   2256 0x00000004
[16072.109208] Call Trace:
[16072.109211]  __schedule+0x3d6/0x8b0
[16072.109215]  schedule+0x36/0x80
[16072.109218]  schedule_timeout+0x1f3/0x360
[16072.109221]  ? check_preempt_curr+0x5a/0xa0
[16072.109224]  ? ttwu_do_wakeup+0x1e/0x150
[16072.109227]  wait_for_completion+0xb4/0x140
[16072.109230]  ? wait_for_completion+0xb4/0x140
[16072.109233]  ? wake_up_q+0x70/0x70
[16072.109236]  flush_work+0x129/0x1e0
[16072.109240]  ? worker_detach_from_pool+0xb0/0xb0
[16072.109243]  __cancel_work_timer+0x10f/0x190
[16072.109247]  ? device_del+0x264/0x310
[16072.109250]  ? __wake_up+0x44/0x50
[16072.109253]  cancel_delayed_work_sync+0x13/0x20
[16072.109257]  power_supply_unregister+0x37/0xb0
[16072.109260]  devm_power_supply_release+0x11/0x20
[16072.109263]  release_nodes+0x110/0x200
[16072.109266]  devres_release_group+0x7c/0xb0
[16072.109274]  wacom_remove+0xc2/0x110 [wacom]
[16072.109279]  hid_device_remove+0x6e/0xd0 [hid]
[16072.109284]  device_release_driver_internal+0x158/0x210
[16072.109288]  device_release_driver+0x12/0x20
[16072.109291]  bus_remove_device+0xec/0x160
[16072.109293]  device_del+0x1de/0x310
[16072.109298]  hid_destroy_device+0x27/0x60 [hid]
[16072.109303]  usbhid_disconnect+0x51/0x70 [usbhid]
[16072.109308]  usb_unbind_interface+0x77/0x270
[16072.109311]  device_release_driver_internal+0x158/0x210
[16072.109315]  device_release_driver+0x12/0x20
[16072.109318]  usb_driver_release_interface+0x77/0x80
[16072.109321]  proc_ioctl+0x20f/0x250
[16072.109325]  usbdev_do_ioctl+0x57f/0x1140
[16072.109327]  ? __wake_up+0x44/0x50
[16072.109331]  usbdev_ioctl+0xe/0x20
[16072.109336]  do_vfs_ioctl+0xa4/0x600
[16072.109339]  ? vfs_write+0x15a/0x1b0
[16072.109343]  SyS_ioctl+0x79/0x90
[16072.109347]  entry_SYSCALL_64_fastpath+0x24/0xab
[16072.109349] RIP: 0033:0x7f20da807f47
[16072.109351] RSP: 002b:00007ffc422ae398 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[16072.109353] RAX: ffffffffffffffda RBX: 00000000010b8560 RCX: 00007f20da807f47
[16072.109355] RDX: 00007ffc422ae3a0 RSI: 00000000c0105512 RDI: 0000000000000009
[16072.109356] RBP: 0000000000000000 R08: 00007ffc422ae3e0 R09: 0000000000000010
[16072.109357] R10: 00000000000000a6 R11: 0000000000000246 R12: 0000000000000000
[16072.109359] R13: 00000000010b8560 R14: 00007ffc422ae2e0 R15: 0000000000000000

Reported-and-tested-by: Richard Hughes <rhughes@redhat.com>
Tested-by: Aaron Skomra <Aaron.Skomra@wacom.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Fixes: 7f1a57fdd6 ("power_supply: Fix possible NULL pointer dereference on early uevent")
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-06 16:03:21 +02:00
Vinod Koul
e6a578e289 power: reset: qcom-pon: Add Qcom PON driver
Add support Qualcomm PM8xxx PON which is responsible for reboot
mode support.

Co-developed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-06 15:53:58 +02:00
Vinod Koul
ad0e953479 dt-bindings: power: reset: Add qcom pon binding
The Power On device for Qcom PM 8xxx is a MFD supporting pwrkey and
resin along with the Android reboot-mode.

Add the binding describing this.

Suggested-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-06 15:53:10 +02:00
Sameer Nanda
f68b883e8f power: supply: add cros-ec USBPD charger driver.
This driver gets various bits of information about what is connected to
USB PD ports from the EC and converts that into power_supply properties.

Signed-off-by: Sameer Nanda <snanda@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-05 17:12:52 +02:00
Sebastian Reichel
0d08901ba8 Immutable branch between MFD and Power? due for the v4.19 merge window
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Merge tag 'ib-mfd-v4.19' into psy-next

Immutable branch between MFD and power-supply due for the v4.19 merge window

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-07-05 17:12:23 +02:00
Enric Balletbo i Serra
3144dce72b mfd: cros_ec_dev: Register cros_usbpd-charger driver as a subdevice.
Check whether this EC instance has USBPD host command support and
instatiate the cros_usbpd-charger driver as a subdevice in such case.

Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2018-07-04 07:10:05 +01:00
Sameer Nanda
06635894a3 mfd: cros_ec: Add USBPD charger commands and struct definitions.
The USBPD charger driver gets information from the ChromeOS EC, this
patch adds the USBPD charger definitions needed by this driver.

Signed-off-by: Sameer Nanda <snanda@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2018-07-04 07:09:58 +01:00
Colin Ian King
1d45d2d2fd power: supply: max1721x: fix spelling mistake "RSenese" -> "RSense"
Trivial fix to spelling mistake in dev_warn message text

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-06-28 14:24:13 +02:00
Alexey Khoroshilov
f052df96c4 power: reset: zx-reboot: put device node in zx_reboot_probe()
zx_reboot_probe() increments refcnt of zx296702-pcu device node by
of_find_compatible_node() and leaves it undecremented on both
successful and error paths.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Reviewed-by: Nicholas Mc Guire <der.herr@hofr.at>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-06-28 14:20:38 +02:00
Enric Balletbo i Serra
91937b1478 power: supply: tps65217: Switch to SPDX identifier.
Adopt the SPDX license identifier headers to ease license compliance
management.

Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-06-28 14:19:20 +02:00
Brian Norris
45fab2c61f dt-bindings: power: sbs-battery: re-document "ti,bq20z75"
This compatible property was documented before the driver was renamed to
"SBS" (see commit e57f1b68c4 ("devicetree-bindings: Propagate
bq20z75->sbs rename to dt bindings")). The driver has continued to
support this property as an alternative to "sbs,sbs-battery", and
because we've noticed there are some lingering TI specifics (in the
manufacturer-specific portion of the SBS spec), we'd like to start using
this property again to differentiate.

In typical DT fashion, the <vendor>,<part-number> specifics should be
used ahead of the generic "sbs,sbs-battery" string, so we can handle
vendor specifics -- so document this. Language borrowed mostly from
Documentation/devicetree/bindings/power/supply/sbs_sbs-charger.txt

Also fixup the example to use this property (it's already implying that
it's "bq20z75@b"); fixup the node name to be generic ("battery", not
"<part-number>"); and fixup some whitespace.

Signed-off-by: Brian Norris <briannorris@chromium.org>
Acked-by: Rhyland Klein <rklein@nvidia.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-06-28 14:09:46 +02:00
Brian Norris
76b16f4cdf power: supply: sbs-battery: don't assume MANUFACTURER_DATA formats
This driver was originally submitted for the TI BQ20Z75 battery IC
(commit a7640bfa10 ("power_supply: Add driver for TI BQ20Z75 gas gauge
IC")) and later renamed to express generic SBS support. While it's
mostly true that this driver implemented a standard SBS command set, it
takes liberties with the REG_MANUFACTURER_DATA register. This register
is specified in the SBS spec, but it doesn't make any mention of what
its actual contents are.

We've sort of noticed this optionality previously, with commit
17c6d3979e ("sbs-battery: make writes to ManufacturerAccess
optional"), where we found that some batteries NAK writes to this
register.

What this really means is that so far, we've just been lucky that most
batteries have either been compatible with the TI chip, or else at least
haven't reported highly-unexpected values.

For instance, one battery I have here seems to report either 0x0000 or
0x0100 to the MANUFACTURER_ACCESS_STATUS command -- while this seems to
match either Wake Up (bits[11:8] = 0000b) or Normal Discharge
(bits[11:8] = 0001b) status for the TI part [1], they don't seem to
actually correspond to real states (for instance, I never see 0101b =
Charge, even when charging).

On other batteries, I'm getting apparently random data in return, which
means that occasionally, we interpret this as "battery not present" or
"battery is not healthy".

All in all, it seems to be a really bad idea to make assumptions about
REG_MANUFACTURER_DATA, unless we already know what battery we're using.
Therefore, this patch reimplements the "present" and "health" checks to
the following on most SBS batteries:

1. HEALTH: report "unknown" -- I couldn't find a standard SBS command
   that gives us much useful here
2. PRESENT: just send a REG_STATUS command; if it succeeds, then the
   battery is present

Also, we stop sending MANUFACTURER_ACCESS_SLEEP to non-TI parts. I have
no proof that this is useful and supported.

If someone explicitly provided a 'ti,bq20z75' compatible property, then
we continue to use the existing TI command behaviors, and we effectively
revert commit 17c6d3979e ("sbs-battery: make writes to
ManufacturerAccess optional") to again make these commands required.

[1] http://www.ti.com/lit/er/sluu265a/sluu265a.pdf

Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Rhyland Klein <rklein@nvidia.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-06-28 14:09:46 +02:00
Linus Torvalds
ce397d215c Linux 4.18-rc1 2018-06-17 08:04:49 +09:00
Linus Torvalds
265c5596da for-linus-20180616
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Merge tag 'for-linus-20180616' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "A collection of fixes that should go into -rc1. This contains:

   - bsg_open vs bsg_unregister race fix (Anatoliy)

   - NVMe pull request from Christoph, with fixes for regressions in
     this window, FC connect/reconnect path code unification, and a
     trace point addition.

   - timeout fix (Christoph)

   - remove a few unused functions (Christoph)

   - blk-mq tag_set reinit fix (Roman)"

* tag 'for-linus-20180616' of git://git.kernel.dk/linux-block:
  bsg: fix race of bsg_open and bsg_unregister
  block: remov blk_queue_invalidate_tags
  nvme-fabrics: fix and refine state checks in __nvmf_check_ready
  nvme-fabrics: handle the admin-only case properly in nvmf_check_ready
  nvme-fabrics: refactor queue ready check
  blk-mq: remove blk_mq_tagset_iter
  nvme: remove nvme_reinit_tagset
  nvme-fc: fix nulling of queue data on reconnect
  nvme-fc: remove reinit_request routine
  blk-mq: don't time out requests again that are in the timeout handler
  nvme-fc: change controllers first connect to use reconnect path
  nvme: don't rely on the changed namespace list log
  nvmet: free smart-log buffer after use
  nvme-rdma: fix error flow during mapping request data
  nvme: add bio remapping tracepoint
  nvme: fix NULL pointer dereference in nvme_init_subsystem
  blk-mq: reinit q->tag_set_list entry only after grace period
2018-06-17 05:37:55 +09:00
Linus Torvalds
5e7b9212a4 Solve a series of broken links for files under Documentation:
- can.rst: fix a footnote reference;
 - crypto_engine.rst: Fix two parsing warnings;
 - Fix a lot of broken references to Documentation/*;
 - Improves the scripts/documentation-file-ref-check script,
   in order to help detecting/fixing broken references,
   preventing false-positives.
 
 After this patch series, only 33 broken references to doc files are
 detected by scripts/documentation-file-ref-check.
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Merge tag 'docs-broken-links' of git://linuxtv.org/mchehab/experimental

Pull documentation fixes from Mauro Carvalho Chehab:
 "This solves a series of broken links for files under Documentation,
  and improves a script meant to detect such broken links (see
  scripts/documentation-file-ref-check).

  The changes on this series are:

   - can.rst: fix a footnote reference;

   - crypto_engine.rst: Fix two parsing warnings;

   - Fix a lot of broken references to Documentation/*;

   - improve the scripts/documentation-file-ref-check script, in order
     to help detecting/fixing broken references, preventing
     false-positives.

  After this patch series, only 33 broken references to doc files are
  detected by scripts/documentation-file-ref-check"

* tag 'docs-broken-links' of git://linuxtv.org/mchehab/experimental: (26 commits)
  fix a series of Documentation/ broken file name references
  Documentation: rstFlatTable.py: fix a broken reference
  ABI: sysfs-devices-system-cpu: remove a broken reference
  devicetree: fix a series of wrong file references
  devicetree: fix name of pinctrl-bindings.txt
  devicetree: fix some bindings file names
  MAINTAINERS: fix location of DT npcm files
  MAINTAINERS: fix location of some display DT bindings
  kernel-parameters.txt: fix pointers to sound parameters
  bindings: nvmem/zii: Fix location of nvmem.txt
  docs: Fix more broken references
  scripts/documentation-file-ref-check: check tools/*/Documentation
  scripts/documentation-file-ref-check: get rid of false-positives
  scripts/documentation-file-ref-check: hint: dash or underline
  scripts/documentation-file-ref-check: add a fix logic for DT
  scripts/documentation-file-ref-check: accept more wildcards at filenames
  scripts/documentation-file-ref-check: fix help message
  media: max2175: fix location of driver's companion documentation
  media: v4l: fix broken video4linux docs locations
  media: dvb: point to the location of the old README.dvb-usb file
  ...
2018-06-17 05:25:18 +09:00
Linus Torvalds
dbb2816fc7 \n
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Merge tag 'fsnotify_for_v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

Pull fsnotify updates from Jan Kara:
 "fsnotify cleanups unifying handling of different watch types.

  This is the shortened fsnotify series from Amir with the last five
  patches pulled out. Amir has modified those patches to not change
  struct inode but obviously it's too late for those to go into this
  merge window"

* tag 'fsnotify_for_v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  fsnotify: add fsnotify_add_inode_mark() wrappers
  fanotify: generalize fanotify_should_send_event()
  fsnotify: generalize send_to_group()
  fsnotify: generalize iteration of marks by object type
  fsnotify: introduce marks iteration helpers
  fsnotify: remove redundant arguments to handle_event()
  fsnotify: use type id to identify connector object type
2018-06-17 05:06:18 +09:00
Linus Torvalds
644f2639ae fbdev changes for v4.18:
- mark omapfb drivers as orphans in MAINTAINERS file (Tomi Valkeinen)
 
 - add missing module license tags to omap/omapfb driver (Arnd Bergmann)
 
 - add missing GPIOLIB dependendy to omap2/omapfb driver (Arnd Bergmann)
 
 - convert savagefb, aty128fb & radeonfb drivers to use msleep & co.
   (Jia-Ju Bai)
 
 - allow COMPILE_TEST build for viafb driver (media part was reviewed by
   media subsystem Maintainer)
 
 - remove unused MERAM support from sh_mobile_lcdcfb and shmob-drm drivers
   (drm parts were acked by shmob-drm driver Maintainer)
 
 - remove unused auo_k190xfb drivers
 
 - misc cleanups (Souptick Joarder, Wolfram Sang, Markus Elfring, Andy
   Shevchenko, Colin Ian King)
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Merge tag 'fbdev-v4.18' of git://github.com/bzolnier/linux

Pull fbdev updates from Bartlomiej Zolnierkiewicz:
 "There is nothing really major here, few small fixes, some cleanups and
  dead drivers removal:

   - mark omapfb drivers as orphans in MAINTAINERS file (Tomi Valkeinen)

   - add missing module license tags to omap/omapfb driver (Arnd
     Bergmann)

   - add missing GPIOLIB dependendy to omap2/omapfb driver (Arnd
     Bergmann)

   - convert savagefb, aty128fb & radeonfb drivers to use msleep & co.
     (Jia-Ju Bai)

   - allow COMPILE_TEST build for viafb driver (media part was reviewed
     by media subsystem Maintainer)

   - remove unused MERAM support from sh_mobile_lcdcfb and shmob-drm
     drivers (drm parts were acked by shmob-drm driver Maintainer)

   - remove unused auo_k190xfb drivers

   - misc cleanups (Souptick Joarder, Wolfram Sang, Markus Elfring, Andy
     Shevchenko, Colin Ian King)"

* tag 'fbdev-v4.18' of git://github.com/bzolnier/linux: (26 commits)
  fb_omap2: add gpiolib dependency
  video/omap: add module license tags
  MAINTAINERS: make omapfb orphan
  video: fbdev: pxafb: match_string() conversion fixup
  video: fbdev: nvidia: fix spelling mistake: "scaleing" -> "scaling"
  video: fbdev: fix spelling mistake: "frambuffer" -> "framebuffer"
  video: fbdev: pxafb: Convert to use match_string() helper
  video: fbdev: via: allow COMPILE_TEST build
  video: fbdev: remove unused sh_mobile_meram driver
  drm: shmobile: remove unused MERAM support
  video: fbdev: sh_mobile_lcdcfb: remove unused MERAM support
  video: fbdev: remove unused auo_k190xfb drivers
  video: omap: Improve a size determination in omapfb_do_probe()
  video: sm501fb: Improve a size determination in sm501fb_probe()
  video: fbdev-MMP: Improve a size determination in path_init()
  video: fbdev-MMP: Delete an error message for a failed memory allocation in two functions
  video: auo_k190x: Delete an error message for a failed memory allocation in auok190x_common_probe()
  video: sh_mobile_lcdcfb: Delete an error message for a failed memory allocation in two functions
  video: sh_mobile_meram: Delete an error message for a failed memory allocation in sh_mobile_meram_probe()
  video: fbdev: sh_mobile_meram: Drop SUPERH platform dependency
  ...
2018-06-17 05:00:24 +09:00
Linus Torvalds
35773c9381 Merge branch 'afs-proc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull AFS updates from Al Viro:
 "Assorted AFS stuff - ended up in vfs.git since most of that consists
  of David's AFS-related followups to Christoph's procfs series"

* 'afs-proc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  afs: Optimise callback breaking by not repeating volume lookup
  afs: Display manually added cells in dynamic root mount
  afs: Enable IPv6 DNS lookups
  afs: Show all of a server's addresses in /proc/fs/afs/servers
  afs: Handle CONFIG_PROC_FS=n
  proc: Make inline name size calculation automatic
  afs: Implement network namespacing
  afs: Mark afs_net::ws_cell as __rcu and set using rcu functions
  afs: Fix a Sparse warning in xdr_decode_AFSFetchStatus()
  proc: Add a way to make network proc files writable
  afs: Rearrange fs/afs/proc.c to remove remaining predeclarations.
  afs: Rearrange fs/afs/proc.c to move the show routines up
  afs: Rearrange fs/afs/proc.c by moving fops and open functions down
  afs: Move /proc management functions to the end of the file
2018-06-16 16:32:04 +09:00
Linus Torvalds
29d6849d88 Merge branch 'work.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull compat updates from Al Viro:
 "Some biarch patches - getting rid of assorted (mis)uses of
  compat_alloc_user_space().

  Not much in that area this cycle..."

* 'work.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  orangefs: simplify compat ioctl handling
  signalfd: lift sigmask copyin and size checks to callers of do_signalfd4()
  vmsplice(): lift importing iovec into vmsplice(2) and compat counterpart
2018-06-16 16:21:50 +09:00
Linus Torvalds
a5b729ea18 Merge branch 'work.aio' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull aio fixes from Al Viro:
 "Assorted AIO followups and fixes"

* 'work.aio' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  eventpoll: switch to ->poll_mask
  aio: only return events requested in poll_mask() for IOCB_CMD_POLL
  eventfd: only return events requested in poll_mask()
  aio: mark __aio_sigset::sigmask const
2018-06-16 16:11:40 +09:00
Linus Torvalds
9215310cf1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Various netfilter fixlets from Pablo and the netfilter team.

 2) Fix regression in IPVS caused by lack of PMTU exceptions on local
    routes in ipv6, from Julian Anastasov.

 3) Check pskb_trim_rcsum for failure in DSA, from Zhouyang Jia.

 4) Don't crash on poll in TLS, from Daniel Borkmann.

 5) Revert SO_REUSE{ADDR,PORT} change, it regresses various things
    including Avahi mDNS. From Bart Van Assche.

 6) Missing of_node_put in qcom/emac driver, from Yue Haibing.

 7) We lack checking of the TCP checking in one special case during SYN
    receive, from Frank van der Linden.

 8) Fix module init error paths of mac80211 hwsim, from Johannes Berg.

 9) Handle 802.1ad properly in stmmac driver, from Elad Nachman.

10) Must grab HW caps before doing quirk checks in stmmac driver, from
    Jose Abreu.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (81 commits)
  net: stmmac: Run HWIF Quirks after getting HW caps
  neighbour: skip NTF_EXT_LEARNED entries during forced gc
  net: cxgb3: add error handling for sysfs_create_group
  tls: fix waitall behavior in tls_sw_recvmsg
  tls: fix use-after-free in tls_push_record
  l2tp: filter out non-PPP sessions in pppol2tp_tunnel_ioctl()
  l2tp: reject creation of non-PPP sessions on L2TPv2 tunnels
  mlxsw: spectrum_switchdev: Fix port_vlan refcounting
  mlxsw: spectrum_router: Align with new route replace logic
  mlxsw: spectrum_router: Allow appending to dev-only routes
  ipv6: Only emit append events for appended routes
  stmmac: added support for 802.1ad vlan stripping
  cfg80211: fix rcu in cfg80211_unregister_wdev
  mac80211: Move up init of TXQs
  mac80211_hwsim: fix module init error paths
  cfg80211: initialize sinfo in cfg80211_get_station
  nl80211: fix some kernel doc tag mistakes
  hv_netvsc: Fix the variable sizes in ipsecv2 and rsc offload
  rds: avoid unenecessary cong_update in loop transport
  l2tp: clean up stale tunnel or session in pppol2tp_connect's error path
  ...
2018-06-16 07:39:34 +09:00
Linus Torvalds
de7f01c22a Modules updates for v4.18
Summary of modules changes for the 4.18 merge window:
 
 - Minor code cleanup and also allow sig_enforce param to be shown in
   sysfs with CONFIG_MODULE_SIG_FORCE
 
 Signed-off-by: Jessica Yu <jeyu@kernel.org>
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Merge tag 'modules-for-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux

Pull module updates from Jessica Yu:
 "Minor code cleanup and also allow sig_enforce param to be shown in
  sysfs with CONFIG_MODULE_SIG_FORCE"

* tag 'modules-for-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  module: Allow to always show the status of modsign
  module: Do not access sig_enforce directly
2018-06-16 07:36:39 +09:00
Linus Torvalds
8d1e5133bf Merge branch 'for-linus-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
Pull uml updates from Richard Weinberger:
 "Minor updates for UML:

   - fixes for our new vector network driver by Anton

   - initcall cleanup by Alexander

   - We have a new mailinglist, sourceforge.net sucks"

* 'for-linus-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
  um: Fix raw interface options
  um: Fix initialization of vector queues
  um: remove uml initcalls
  um: Update mailing list address
2018-06-16 06:50:51 +09:00
Linus Torvalds
6a4d4b3253 RISC-V Updates for the 4.18 Merge Window
This tag contains some small RISC-V updates I'd like to target for 4.18.
 They are all fairly small this time.  Here's a short summary, there's
 more info in the commits/merges.
 
 * A fix to __clear_user to respect the passed arguments.
 * Enough support for the perf subsystem to work with RISC-V's ISA
   defined performance counters.
 * Support for sparse and cleanups suggested by it.
 * Support for R_RISCV_32 (a relocation, not the 32-bit ISA).
 * Some MAINTAINERS cleanups.
 * The addition of CONFIG_HVC_RISCV_SBI to our defconfig, as it's always
   present.
 
 I've given these a simple build+boot test.
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Merge tag 'riscv-for-linus-4.18-merge_window' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux

Pull RISC-V updates from Palmer Dabbelt:
 "This contains some small RISC-V updates I'd like to target for 4.18.

  They are all fairly small this time. Here's a short summary, there's
  more info in the commits/merges:

   - a fix to __clear_user to respect the passed arguments.

   - enough support for the perf subsystem to work with RISC-V's ISA
     defined performance counters.

   - support for sparse and cleanups suggested by it.

   - support for R_RISCV_32 (a relocation, not the 32-bit ISA).

   - some MAINTAINERS cleanups.

   - the addition of CONFIG_HVC_RISCV_SBI to our defconfig, as it's
     always present.

  I've given these a simple build+boot test"

* tag 'riscv-for-linus-4.18-merge_window' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux:
  RISC-V: Add CONFIG_HVC_RISCV_SBI=y to defconfig
  RISC-V: Handle R_RISCV_32 in modules
  riscv/ftrace: Export _mcount when DYNAMIC_FTRACE isn't set
  riscv: add riscv-specific predefines to CHECKFLAGS
  riscv: split the declaration of __copy_user
  riscv: no __user for probe_kernel_address()
  riscv: use NULL instead of a plain 0
  perf: riscv: Add Document for Future Porting Guide
  perf: riscv: preliminary RISC-V support
  MAINTAINERS: Update Albert's email, he's back at Berkeley
  MAINTAINERS: Add myself as a maintainer for SiFive's drivers
  riscv: Fix the bug in memory access fixup code
2018-06-16 06:42:43 +09:00
Linus Torvalds
8949170cf4 Mostly the PPC part of the release, but also switching to Arnd's fix
for the hyperv config issue and a typo fix.
 
 Main PPC changes: reimplement the MMIO instruction emulation,
 transactional memory support for PR KVM, improve radix page table
 handling.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull more kvm updates from Paolo Bonzini:
 "Mostly the PPC part of the release, but also switching to Arnd's fix
  for the hyperv config issue and a typo fix.

  Main PPC changes:

   - reimplement the MMIO instruction emulation

   - transactional memory support for PR KVM

   - improve radix page table handling"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (63 commits)
  KVM: x86: VMX: redo fix for link error without CONFIG_HYPERV
  KVM: x86: fix typo at kvm_arch_hardware_setup comment
  KVM: PPC: Book3S PR: Fix failure status setting in tabort. emulation
  KVM: PPC: Book3S PR: Enable use on POWER9 bare-metal hosts in HPT mode
  KVM: PPC: Book3S PR: Don't let PAPR guest set MSR hypervisor bit
  KVM: PPC: Book3S PR: Fix failure status setting in treclaim. emulation
  KVM: PPC: Book3S PR: Fix MSR setting when delivering interrupts
  KVM: PPC: Book3S PR: Handle additional interrupt types
  KVM: PPC: Book3S PR: Enable kvmppc_get/set_one_reg_pr() for HTM registers
  KVM: PPC: Book3S: Remove load/put vcpu for KVM_GET_REGS/KVM_SET_REGS
  KVM: PPC: Remove load/put vcpu for KVM_GET/SET_ONE_REG ioctl
  KVM: PPC: Move vcpu_load/vcpu_put down to each ioctl case in kvm_arch_vcpu_ioctl
  KVM: PPC: Book3S PR: Enable HTM for PR KVM for KVM_CHECK_EXTENSION ioctl
  KVM: PPC: Book3S PR: Support TAR handling for PR KVM HTM
  KVM: PPC: Book3S PR: Add guard code to prevent returning to guest with PR=0 and Transactional state
  KVM: PPC: Book3S PR: Add emulation for tabort. in privileged state
  KVM: PPC: Book3S PR: Add emulation for trechkpt.
  KVM: PPC: Book3S PR: Add emulation for treclaim.
  KVM: PPC: Book3S PR: Restore NV regs after emulating mfspr from TM SPRs
  KVM: PPC: Book3S PR: Always fail transactions in guest privileged state
  ...
2018-06-16 06:37:04 +09:00
Linus Torvalds
2f3f056685 virtio, vhost: features, fixes
VF support for virtio.
 DMA barriers for virtio strong barriers.
 Bugfixes.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:
 "virtio, vhost: features, fixes

   - PCI virtual function support for virtio

   - DMA barriers for virtio strong barriers

   - bugfixes"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio: update the comments for transport features
  virtio_pci: support enabling VFs
  vhost: fix info leak due to uninitialized memory
  virtio_ring: switch to dma_XX barriers for rpmsg
2018-06-16 06:35:02 +09:00
Mauro Carvalho Chehab
44348e8ac1 fix a series of Documentation/ broken file name references
As files move around, their previous links break. Fix the
references for them.

Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
2018-06-15 18:10:01 -03:00
Mauro Carvalho Chehab
315e6bc538 Documentation: rstFlatTable.py: fix a broken reference
The old HOWTO was removed a long time ago. The flat table
version is not metioned elsewhere, so just get rid of the
text.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
2018-06-15 18:10:01 -03:00
Mauro Carvalho Chehab
6ec71b205d ABI: sysfs-devices-system-cpu: remove a broken reference
This file doesn't exist anymore:
	Documentation/cpu-freq/user-guide.txt

As the ABI already points to Documentation/cpu-freq, just
remove the broken link and the associated text.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
2018-06-15 18:10:01 -03:00