As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

This also starts to propagate the error code from the I2C
transaction as the end of the series adds support for that.

Cc: Wei Chen <Wei.Chen@csr.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Alessandro Rubini <rubini@gnudd.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Thierry Reding <treding@nvidia.com>
Cc: Daniel Krueger <daniel.krueger@systec-electronic.com>
Cc: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Also start returning the error code if something fails, as the
end of the series augment the core to support this.

Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: George Cherian <george.cherian@ti.com>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Feng Tang <feng.tang@intel.com>
Cc: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Also start to propagate the error code here as the end of the
series fixes this to work for all drivers.

Cc: Semen Protsenko <semen.protsenko@globallogic.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Nicholas Krause <xerofoify@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Roland Stigge <stigge@antcom.de>
Cc: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Brunner Michael <Michael.Brunner@kontron.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.
Acked-by: David Cohen <david.a.cohen@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Magnus Damm <damm@opensource.se>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Ashish Jangam <ashish.jangam@kpitcummins.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Signed-off-by: Peter Rosin <peda@axentia.se>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Performing a read operation on the IRQ Status register will clear the
IRQ latch. Since a read operation on the IRQ Status register must be
performed in the IRQ handler in order to determine if the IRQ was in
fact generated by the device, the IRQ latch is consequently cleared by
the IRQ handler. A spinlock is used to guarantee that each IRQ is
serviced in the order it was received.
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

The commit "gpio: pxa: change the interrupt management" should have
taken care of moving an ifdef to not englobe irqdomain related
structures anymore, as they are used now for all builds.

This repairs the broken builds where CONFIG_OF=n.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

This removes the set_irq_flags() call that unfortunately slipped
into the BCM NSP driver.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Yendapally Reddy Dhananjaya Reddy <yrdreddy@broadcom.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Linux 4.4-rc6

Pull RTC fixes from Alexandre Belloni:
 "Late fixes for the RTC subsystem for 4.4:

  A fix for a nasty hardware bug in rk808 and an initialization
  reordering in da9063 to fix a possible crash"

* tag 'rtc-4.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
  rtc: da9063: fix access ordering error during RTC interrupt at system power on
  rtc: rk808: Compensate for Rockchip calendar deviation on November 31st

This fix alters the ordering of the IRQ and device registrations in the RTC
driver probe function. This change will apply to the RTC driver that supports
both DA9063 and DA9062 PMICs.

A problem could occur with the existing RTC driver if:

A system is started from a cold boot using the PMIC RTC IRQ to initiate a
power on operation. For instance, if an RTC alarm is used to start a
platform from power off.
The existing driver IRQ is requested before the device has been properly
registered.
i.e.
    ret = devm_request_threaded_irq()
comes before
    rtc->rtc_dev = devm_rtc_device_register();

In this case, the interrupt can be called before the device has been
registered and the handler can be called immediately. The IRQ handler
da9063_alarm_event() contains the function call

    rtc_update_irq(rtc->rtc_dev, 1, RTC_IRQF | RTC_AF);

which in turn tries to access the unavailable rtc->rtc_dev.

The fix is to reorder the functions inside the RTC probe. The IRQ is
requested after the RTC device resource has been registered so that
get_irq_byname is the last thing to happen.
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

In A.D. 1582 Pope Gregory XIII found that the existing Julian calendar
insufficiently represented reality, and changed the rules about
calculating leap years to account for this. Similarly, in A.D. 2013
Rockchip hardware engineers found that the new Gregorian calendar still
contained flaws, and that the month of November should be counted up to
31 days instead. Unfortunately it takes a long time for calendar changes
to gain widespread adoption, and just like more than 300 years went by
before the last Protestant nation implemented Greg's proposal, we will
have to wait a while until all religions and operating system kernels
acknowledge the inherent advantages of the Rockchip system. Until then
we need to translate dates read from (and written to) Rockchip hardware
back to the Gregorian format.

This patch works by defining Jan 1st, 2016 as the arbitrary anchor date
on which Rockchip and Gregorian calendars are in sync. From that we can
translate arbitrary later dates back and forth by counting the number
of November/December transitons since the anchor date to determine the
offset between the calendars. We choose this method (rather than trying
to regularly "correct" the date stored in hardware) since it's the only
way to ensure perfect time-keeping even if the system may be shut down
for an unknown number of years. The drawback is that other software
reading the same hardware (e.g. mainboard firmware) must use the same
translation convention (including the same anchor date) to be able to
read and write correct timestamps from/to the RTC.
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

Pull tty/serial fixes from Greg KH:
 "Here are some tty/serial driver fixes for 4.4-rc6 that resolve some
  reported problems.  All of these have been in linux-next.  The details
  are in the shortlog"

* tag 'tty-4.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: Fix GPF in flush_to_ldisc()
  serial: earlycon: Add missing spinlock initialization
  serial: sh-sci: Fix length of scatterlist
  n_tty: Fix poll() after buffer-limited eof push read
  serial: 8250_uniphier: fix dl_read and dl_write functions

Pull USB fixes from Greg KH:
 "Here are some USB and PHY fixes for 4.4-rc6.  All of them resolve some
  reported problems.  Full details in the shortlog"

* tag 'usb-4.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: fix invalid memory access in hub_activate()
  USB: ipaq.c: fix a timeout loop
  phy: core: Get a refcount to phy in devm_of_phy_get_by_index()
  phy: cygnus: pcie: add missing of_node_put
  phy: miphy365x: add missing of_node_put
  phy: miphy28lp: add missing of_node_put
  phy: rockchip-usb: add missing of_node_put
  phy: berlin-sata: add missing of_node_put
  phy: mt65xx-usb3: add missing of_node_put
  phy: brcmstb-sata: add missing of_node_put
  phy: sun9i-usb: add USB dependency

Pull md fixes from Neil Brown:
 "Four fixes for md:

   - two recently introduced regressions fixed.
   - one older bug in RAID10 - tagged for -stable since 4.2
   - one minor sysfs api improvement"

* tag 'md/4.4-rc5-fixes' of git://neil.brown.name/md:
  Fix remove_and_add_spares removes drive added as spare in slot_store
  md: fix bug due to nested suspend
  MD: change journal disk role to disk 0
  md/raid10: fix data corruption and crash during resync

Pull powerpc fixes from Michael Ellerman:
 - Partial revert of "powerpc: Individual System V IPC system calls"
 - pr_warn_once on unsupported OPAL_MSG type from Stewart
 - Fix deadlock in opal-irqchip introduced by "Fix double endian
   conversion" from Alistair

* tag 'powerpc-4.4-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/opal-irqchip: Fix deadlock introduced by "Fix double endian conversion"
  powerpc/powernv: pr_warn_once on unsupported OPAL_MSG type
  Partial revert of "powerpc: Individual System V IPC system calls"

Pull spi fixes from Mark Brown:
 "A couple of reference counting bugs here, one in spidev and one with
  holding an extra reference in the core that we never freed if we
  removed a device, plus a driver specific fix.  Both of the refcounting
  bugs are very old but they've only been found by observation so
  hopefully their impact has been low"

* tag 'spi-fix-v4.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: fix parent-device reference leak
  spi: spidev: Hold spi_lock over all defererences of spi in release()
  spi-fsl-dspi: Fix CTAR Register access

Pull GPIO fixes from Linus Walleij:
 "Some GPIO fixes for the v4.4 series.  Most prominent: I revert the
  error propagation from the .get() function until we can fix up all the
  drivers properly for v4.5.

   - Revert the error number propagation from the .get() vtable entry
     temporarily, until we make the proper fixes to all drivers.
   - Fix the clamping behaviour in the generic GPIO driver.
   - Driver fix for the ath79 driver"

* tag 'gpio-v4.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: revert get() to non-errorprogating behaviour
  gpio: generic: clamp values from bgpio_get_set()
  gpio: ath79: Fix the logic to clear offset bit of AR71XX_GPIO_REG_OE register

Pull pin control fixes from Linus Walleij:
 - Driver fixes for Freescale i.MX7D, Intel, Broadcom 2835
 - One MAINTAINERS entry

* tag 'pinctrl-v4.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  MAINTAINERS: pinctrl: Add maintainers for pinctrl-single
  pinctrl: bcm2835: Fix initial value for direction_output
  pinctrl: intel: fix offset calculation issue of register PAD_OWN
  pinctrl: intel: fix bug of register offset calculation
  pinctrl: freescale: add ZERO_OFFSET_VALID flag for vf610 pinctrl

Pull i2c fixes from Wolfram Sang:
 "A set of 'usual' driver bugfixes for the I2C subsystem"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: rcar: disable runtime PM correctly in slave mode
  i2c: designware: Keep pm_runtime_enable/_disable calls in sync
  i2c: designware: fix IO timeout issue for AMD controller
  i2c: imx: init bus recovery info before adding i2c adapter
  i2c: do not use 0x in front of %pa
  i2c: davinci: Increase module clock frequency
  i2c: mv64xxx: The n clockdiv factor is 0 based on sunxi SoCs
  i2c: rk3x: populate correct variable for sda_falling_time

Pull input fixes from Dmitry Torokhov:
 "Just a few assorted driver fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: elants_i2c - fix wake-on-touch
  Input: elan_i2c - set input device's vendor and product IDs
  Input: sun4i-lradc-keys - fix typo in binding documentation
  Input: atmel_mxt_ts - add maxtouch to I2C table for module autoload
  Input: arizona-haptic - fix disabling of haptics device
  Input: aiptek - fix crash on detecting device without endpoints
  Input: atmel_mxt_ts - add generic platform data for Chromebooks
  Input: parkbd - clear unused function pointers
  Input: walkera0701 - clear unused function pointers
  Input: turbografx - clear unused function pointers
  Input: gamecon - clear unused function pointers
  Input: db9 - clear unused function pointers

When we also are I2C slave, we need to disable runtime PM because the
address detection mechanism needs to be active all the time. However, we
can reenable runtime PM once the slave instance was unregistered. So,
use pm_runtime_get_sync/put to achieve this, since it has proper
refcounting. pm_runtime_allow/forbid is like a global knob controllable
from userspace which is unsuitable here.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org

Pull power management fixes from Rafael Wysocki:
 "These fix a potential regression introduced during the 4.3 cycle
  (generic power domains framework), a nasty bug that has been present
  forever (power capping RAPL driver), a build issue (Tegra cpufreq
  driver) and a minor ugliness introduced recently (intel_pstate).

  Specifics:

   - Fix a potential regression in the generic power domains framework
     introduced during the 4.3 development cycle that may lead to
     spurious failures of system suspend in certain situations (Ulf
     Hansson).

   - Fix a problem in the power capping RAPL (Running Average Power
     Limits) driver that causes it to initialize successfully on some
     systems where it is not supposed to do that which is due to an
     incorrect check in an initialization routine (Prarit Bhargava).

   - Fix a build problem in the cpufreq Tegra driver that depends on the
     regulator framework, but that dependency is not reflected in
     Kconfig (Arnd Bergmann).

   - Fix a recent mistake in the intel_pstate driver where a numeric
     constant is used directly instead of a symbol defined specifically
     for the case in question (Prarit Bhargava)"

* tag 'pm+acpi-4.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  powercap / RAPL: fix BIOS lock check
  cpufreq: intel_pstate: Minor cleanup for FRAC_BITS
  cpufreq: tegra: add regulator dependency for T124
  PM / Domains: Allow runtime PM callbacks to be re-used during system PM

Pull SCSI fixes from James Bottomley:
 "Three fixes this time, two in SES picked up by KASAN for various types
  of buffer overrun.  The first is a USB array which returns page 8
  whatever is asked for and causes us to overrun with incorrect data
  format assumptions and the second is an invalid iteration of page 10
  (the additional information page).

  The final fix is a reversion of a NULL deref fix which caused
  suspend/resume not to be called in pairs leading to incorrect device
  operation (Jens has queued a more proper fix for the problem in
  block)"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  ses: fix additional element traversal bug
  Revert "SCSI: Fix NULL pointer dereference in runtime PM"
  ses: Fix problems with simple enclosures

When sending "SLEEP" command to the controller it ceases scanning
completely and is unable to wake the system up from sleep, so if it is
configured as a wakeup source we should simply configure interrupt for
wakeup and rely on idle logic within the controller to reduce power
consumption while it is not used.
Signed-off-by: James Chen <james.chen@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>