Olof Johansson [Thu, 26 Jul 2018 07:18:25 +0000 (00:18 -0700)]
Merge tag 'samsung-soc-4.19' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into next/soc
Samsung mach/soc changes for v4.19
Minor cleanups and fixes.
* tag 'samsung-soc-4.19' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
ARM: exynos: Clear global variable on init error path
ARM: exynos: Remove outdated maintainer information
ARM: s3c24xx: Fix typo in guard macro of s3c2412.h
ARM: exynos: Clear global variable on init error path
For most of Exynos SoCs, Power Management Unit (PMU) address space is
mapped into global variable 'pmu_base_addr' very early when initializing
PMU interrupt controller. A lot of other machine code depends on it so
when doing iounmap() on this address, clear the global as well to avoid
usage of invalid value (pointing to unmapped memory region).
Properly mapped PMU address space is a requirement for all other machine
code so this fix is purely theoretical. Boot will fail immediately in
many other places after following this error path.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
ARM: exynos: Remove outdated maintainer information
The current maintainers are specified in MAINTAINERS file, so remove
in-sources information with outdated e-mail address (Thomas Abraham's
email does not work, Kukjin Kim uses @kernel.org).
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Olof Johansson [Sat, 21 Jul 2018 21:21:03 +0000 (14:21 -0700)]
Merge tag 'imx-soc-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/soc
i.MX SoC update for 4.19:
- A series from Anson Huang to add power management for i.MX6SLL,
including standby and mem mode suspend, cpuidle support, and bus
clock auto gating function, etc.
- A couple of fix-ups on i.MX6SLL cpuidle random build issues.
- A couple of cleanups on stale EPIT timer initialization and RNGA
platform device registration function.
- Configure i.MX51 SoC M4IF to avoid visual artifacts during video
playback.
- Set up i.MX51 and i.MX53 DBGEN bit of ARM_GPC register, so that
clocks within the debug system can be activated.
- Add a Cortex-M4 platform support which will be useful for running
a Linux instance on Cortex-M4 core integrated in i.MX7D SoC.
- Flag of_iomap failure in imx_aips_allow_unprivileged_access()
function by giving a warning in there.
* tag 'imx-soc-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: mx5: Set the DBGEN bit in ARM_GPC register
ARM: imx51: Configure M4IF to avoid visual artifacts
ARM: imx: call imx6sx_cpuidle_init() conditionally for 6sll
ARM: imx: fix i.MX6SLL build
ARM: imx: flag failure of of_iomap
ARM: i.MX31: remove rnga registration as a platform device
ARM: imx: Provide support for NXP i.MX7D Cortex-M4
ARM: imx: enable bus auto clock gating function for i.mx6sll
ARM: imx: remove i.MX6SLL support in i.MX6SL cpu idle driver
ARM: imx: add cpu idle support for i.MX6SLL
ARM: imx: add L2 page power control for GPC
ARM: imx: add mem mode suspend for i.MX6SLL
ARM: imx: add standby mode suspend for i.MX6SLL
ARM: imx: remove inexistant EPIT timer init
ARM: shmobile: Always enable ARCH_TIMER on SoCs with A7 and/or A15
R-Mobile APE6, R-Car Gen2, and RZ/G1 SoCs have Cortex-A7 and/or
Cortex-A15 CPU cores, all of which have ARM architectured timers.
Force use of the ARM architectured timer on these SoCs.
This allows to:
- Remove the calls to shmobile_init_delay() from the corresponding
machine vectors,
- Remove a check in timer setup specific to R-Car Gen2,
- Remove a check in shmobile_init_delay().
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
After the cleanup in r8a7779_smp_prepare_cpus(), the only remaining caller of
r8a7779_platform_cpu_kill() is in an ifdef, which leads to a build warning
without CONFIG_HOTPLUG_CPU:
arch/arm/mach-shmobile/smp-r8a7779.c:26:12: error: 'r8a7779_platform_cpu_kill' defined but not used [-Werror=unused-function]
This moves the function inside of that #ifdef to avoid the warning.
Fixes: 62f55ce683e3 ("ARM: shmobile: r8a7779: Stop powering down secondary CPUs during early boot") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
soc: r9a06g032: don't build SMP files for non-SMP config
Without CONFIG_SMP, we get a build failure:
In file included from include/linux/byteorder/little_endian.h:5,
from arch/arm/include/uapi/asm/byteorder.h:22,
from include/asm-generic/bitops/le.h:6,
from arch/arm/include/asm/bitops.h:342,
from include/linux/bitops.h:18,
from include/linux/kernel.h:11,
from include/asm-generic/bug.h:18,
from arch/arm/include/asm/bug.h:60,
from include/linux/bug.h:5,
from include/linux/io.h:23,
from drivers/soc/renesas/r9a06g032-smp.c:11:
drivers/soc/renesas/r9a06g032-smp.c: In function 'r9a06g032_smp_boot_secondary':
drivers/soc/renesas/r9a06g032-smp.c:43:21: error: 'secondary_startup' undeclared (first use in this function)
writel(__pa_symbol(secondary_startup), cpu_bootaddr);
^~~~~~~~~~~~~~~~~
This makes the compilation of that file conditional on SMP support.
It would probably be better for consistency to leave that file
in arch/arm/mach-shmobile/, matching what we do for all other smp
operations.
Olof Johansson [Wed, 18 Jul 2018 15:36:21 +0000 (08:36 -0700)]
Merge tag 'mvebu-arm-4.19-1' of git://git.infradead.org/linux-mvebu into next/soc
mvebu arm for 4.19 (part 1)
- remove potential call from invalid context in boot_secondary
- allow using CONFIG_FORTIFY_SOURCE in pmsu.c
* tag 'mvebu-arm-4.19-1' of git://git.infradead.org/linux-mvebu:
ARM: mvebu: convert secondary CPU clock sync to hotplug state
ARM: mvebu: declare asm symbols as character arrays in pmsu.c
Olof Johansson [Wed, 18 Jul 2018 14:50:50 +0000 (07:50 -0700)]
Merge tag 'pxa-for-4.19-v2' of https://github.com/rjarzmik/linux into next/soc
This is the pxa changes for 4.19 cycle :
- the pxa architecture is ported to dma slavemap
- some minor AC97 fixes
- some minor board fixes
* tag 'pxa-for-4.19-v2' of https://github.com/rjarzmik/linux:
net: smc91x: remove the dmaengine compat need
net: smc911x: remove the dmaengine compat need
ARM: pxa: zylonite: use the new ac97 bus support
ARM: pxa: add the missing AC97 clocks
ARM: pxa: mioa701 convert to the new AC97 bus
ARM: pxa: hx4700: fix the usb client
ARM: pxa: change SSP DMA channels allocation
ARM: pxa: remove the DMA IO resources
dmaengine: pxa: document pxad_param
ata: pata_pxa: remove the dmaengine compat need
mtd: rawnand: marvell: remove the dmaengine compat need
media: pxa_camera: remove the dmaengine compat need
mmc: pxamci: remove the dmaengine compat need
dmaengine: pxa: add a default requestor policy
ARM: pxa: add dma slave map
dmaengine: pxa: use a dma slave map
ARM: at91: pm: configure wakeup sources for ULP1 mode
Since for ULP1 PM mode of SAMA5D2 the wakeup sources are limited and
well known add a method to check if these wakeup sources are defined by
user (either via DT or filesystem). In case there are no wakeup sources
defined for ULP1 the PM suspend will fail, otherwise these will be
configured in fast startup registers of PMC. Since wakeup sources of
ULP1 need also to be configured in SHDWC registers the code was a bit
changed to map the SHDWC also in case ULP1 is requested by user (this
was done in the initialization phase). In case the ULP1 initialization
fails the ULP0 mode is used (this mode was also used in case backup mode
initialization failed).
Wenyou Yang [Tue, 17 Jul 2018 08:26:55 +0000 (11:26 +0300)]
ARM: at91: pm: Add ULP1 mode support
In the ULP1 mode, in order to achieve the lowest power consumption
with the system in retention mode and be able to resume on the wake
up events, all the clocks are shut off, inclusive the embedded 12MHz
RC oscillator, and the number of wake up sources is limited as well.
When the wake up event is asserted, the embedded 12MHz RC oscillator
restarts automatically.
The ULP1 (Ultra Low-power mode 1) is introduced by SAMA5D2.
The previous size of pm_suspend.o was 2148 bytes. With the addition of
ULP1 mode the new size of pm_suspend.o raised at 2456 bytes.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com>
[claudiu.beznea@microchip.com: aligned with 4.18-rc1] Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
ARM: at91: pm: Use ULP0 naming instead of slow clock
Switch to use ULP0 naming instead of slow clock naming for power modes, to
be as closed as possible to datasheet. This commit does the necessary
renaming and macro addition to be as close as possible to the namings
from [1].
ARM: hisi: handle of_iomap and fix missing of_node_put
Relying on an unchecked of_iomap() which can return NULL is problematic
here, an explicit check seems mandatory. Also the call to
of_find_compatible_node() returns a device node with refcount incremented
therefor an explicit of_node_put() is needed here.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org> Fixes: commit 22bae4290457 ("ARM: hi3xxx: add hotplug support") Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
ARM: hisi: check of_iomap and fix missing of_node_put
of_find_compatible_node() returns a device node with refcount incremented
and thus needs an explicit of_node_put(). Further relying on an unchecked
of_iomap() which can return NULL is problematic here, after all ctrl_base
is critical enough for hix5hd2_set_cpu() to call BUG() if not available
so a check seems mandated here.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
0002 Fixes: commit 06cc5c1d4d73 ("ARM: hisi: enable hix5hd2 SoC") Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
ARM: hisi: fix error handling and missing of_node_put
of_iomap() can return NULL which seems critical here and thus should be
explicitly flagged so that the cause of system halting can be understood.
As of_find_compatible_node() is returning a device node with refcount
incremented it must be explicitly decremented here.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org> Fixes: commit 7fda91e73155 ("ARM: hisi: enable smp for HiP01") Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
Olof Johansson [Sat, 14 Jul 2018 21:45:14 +0000 (14:45 -0700)]
Merge tag 'omap-for-v4.19/soc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc
SoC updates for omaps for v4.19 merge window
These changes are mostly PM related changes for am335x and
am437x to support RTC only suspend mode. Some of the clock
and driver related chances are still pending so it's not
yet fully functional.
Also included is a change for PM debug sysfs entry to use
DEFINE_SHOW_ATTRIBUTE.
* tag 'omap-for-v4.19/soc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: sleep33/43xx: Add RTC-Mode support
ARM: OMAP2+: sleep33/43xx: Make sleep actions configurable
ARM: OMAP2+: reuse DEFINE_SHOW_ATTRIBUTE() macro
ARM: hwmod: RTC: Don't assume lock/unlock will be called with irq enabled
Olof Johansson [Sat, 14 Jul 2018 21:44:34 +0000 (14:44 -0700)]
Merge tag 'omap-for-v4.19/omap1-v2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc
SoC updates for omap1 for v4.19 merge window
Mostly a series by Janusz Krzysztofik to clean up the
GPIO and input handling for ams-delta. Because of the
platform data changes, we decided that it's best to
merge the related input changes also via the arm-soc
tree so Dmitry Torokhov has acked the input changes.
Also included is a change to constify gpio_leds from
Arvind Yadav.
* tag 'omap-for-v4.19/omap1-v2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP1: ams-delta: move late devices back to init_machine
Input: ams_delta_serio: Get FIQ buffer from platform_data
Input: ams_delta_serio: use IRQ resource
ARM: OMAP1: Get rid of <mach/ams-delta-fiq.h>
ARM: OMAP1: ams-delta FIQ: Keep serio input GPIOs requested
ARM: OMAP1: ams-delta FIQ: don't use static GPIO numbers
ARM: OMAP1: ams-delta: Hog "keybrd_dataout" GPIO pin
Input: ams_delta_serio: Replace power GPIO with regulator
Input: ams_delta_serio: use private structure
Input: ams_delta_serio: convert to platform driver
ARM: OMAP1: ams-delta: drop GPIO lookup table for serio device
ARM: OMAP1: ams-delta: assign LED GPIO numbers from descriptors
ARM: OMAP1: ams-delta: refactor late_init()
ARM: OMAP1: constify gpio_led
Olof Johansson [Sat, 14 Jul 2018 21:44:04 +0000 (14:44 -0700)]
Merge tag 'imx-maintainer-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/soc
i.MX maintainers update for 4.19:
- Add myself and Li Yang as maintainers for Freescale Layerscape ARM
architecture.
* tag 'imx-maintainer-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
MAINTAINERS: add Freescale Layerscape ARM architecture entry
Olof Johansson [Sat, 14 Jul 2018 21:16:26 +0000 (14:16 -0700)]
Merge tag 'davinci-for-v4.19/soc' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/soc
DaVinci SoC updates for v4.19
-----------------------------
* mach-davinci updates needed to finally move over to common clock framework
* update to use the aemif driver from drivers/memory rather than the
private implementation available in mach-davinci
For the later item, I have included a branch from David Lechner which
should also get merged through the clk tree. The clk dependencies are
needed for aemif conversion.
* tag 'davinci-for-v4.19/soc' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci: (34 commits)
ARM: davinci: unduplicate aemif support
ARM: davinci: mityomapl138: use aemif platform driver
ARM: davinci: dm646x-evm: use aemif platform driver
ARM: davinci: da830-evm: use aemif platform driver
ARM: davinci: dm644x-evm: use aemif platform driver
ARM: davinci: dm365-evm: use the ti-aemif soc driver
ARM: davinci: da850-evm: use aemif platform driver in legacy mode
ARM: davinci: omapl138-hawk: add aemif & nand support
clk: davinci: psc-da830: add a lookup entry for aemif clock
clk: davinci: psc-dm646x: use two lookup entries for the aemif clock
clk: davinci: psc-dm644x: use two lookup entries for the aemif clock
clk: davinci: psc-dm365: use two lookup entries for the aemif clock
clk: davinci: psc-da850: remove the 'davinci_nand.0" lookup
ARM: davinci: da8xx-dt: switch to device tree clocks
ARM: davinci: add device tree support to timer
ARM: davinci: remove legacy clocks
ARM: davinci: da8xx: Remove legacy USB and SATA clock init
ARM: davinci: dm646x: Remove legacy clock init
ARM: davinci: dm644x: Remove legacy clock init
ARM: davinci: dm365: Remove legacy clock init
...
Olof Johansson [Sat, 14 Jul 2018 21:12:22 +0000 (14:12 -0700)]
Merge tag 'arm-soc/for-4.19/soc' of https://github.com/Broadcom/stblinux into next/soc
This pull request contains Broadcom ARM-based SoCs platform changes for
4.19, please pull the following:
- Clement re-orders the UART debug entries to be in ascending order and
he also adds the iProc UART3 debug address since that is a common
location for iProc based designs.
* tag 'arm-soc/for-4.19/soc' of https://github.com/Broadcom/stblinux:
ARM: debug: fix BCM2836 order entry
ARM: debug: Add iProc UART3 debug addresses
On i.MX51/i.MX53 it is necessary to set the DBGEN bit in
ARM_GPC register in order to turn on the debug clocks.
The DBGEN bit of ARM_GPC register has the following description
in the i.MX53 Reference Manual:
"This allows the user to manually activate clocks within the debug
system. This register bit directly controls the platform's dbgen_out
output signal which connects to the DAP_SYS to enable all debug clocks.
Once enabled, the clocks cannot be disabled except by asserting the
disable_trace input of the DAP_SYS."
The i.MX6SLL cpuidle support reuses the i.MX6SX implementation, but
the Makefile accidentally enables the i.MX6SL one as well, which
then fails with a link error unless the kernel also enables the
the i.MX6SL clock driver:
arch/arm/mach-imx/cpuidle-imx6sl.o: In function `imx6sl_enter_wait':
cpuidle-imx6sl.c:(.text+0x24): undefined reference to `imx6sl_set_wait_clk'
This changes the two lines that were just modified again, hopefully
getting every case right this time.
Fixes: e7fa1fb39b11 ("ARM: imx: add cpu idle support for i.MX6SLL") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
imx_set_aips is assuming that the address returned from of_iomap is
valid which it probably is in the normal case - as the call site
is void error propagation is not possible but never the less at least
a WARN_ON() seems warranted here.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org> Fixes: commit e57e4ab5fc2e ("ARM: i.MX: allow disabling supervisor protect via DT") Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Stefan Agner [Sun, 25 Mar 2018 18:09:56 +0000 (20:09 +0200)]
ARM: trusted_foundations: do not use naked function
As documented in GCC naked functions should only use basic ASM
syntax. The extended ASM or mixture of basic ASM and "C" code is
not guaranteed. Currently this works because it was hard coded
to follow and check GCC behavior for arguments and register
placement.
Furthermore with clang using parameters in Extended asm in a
naked function is not supported:
arch/arm/firmware/trusted_foundations.c:47:10: error: parameter
references not allowed in naked functions
: "r" (type), "r" (arg1), "r" (arg2)
^
Use a regular function to be more portable. This aligns also with
the other SMC call implementations e.g. in qcom_scm-32.c and
bcm_kona_smc.c.
Cc: Dmitry Osipenko <digetx@gmail.com> Cc: Stephen Warren <swarren@nvidia.com> Cc: Thierry Reding <treding@nvidia.com> Signed-off-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Thierry Reding <treding@nvidia.com>
ARM: i.MX31: remove rnga registration as a platform device
On i.MX31 powered boards with OF support Security Random Number
Generator Accelerator RNGA controller is initialized from device tree,
its registration as a platform device is redundant and actually it is
broken due to missing clock information:
mxc_rnga mxc_rnga: Could not get rng_clk!
mxc_rnga: probe of mxc_rnga failed with error -2
MAINTAINERS: add Freescale Layerscape ARM architecture entry
I have been collecting Freescale Layerscape device tree source files for
a while. Add a MAINTAINERS entry for it, so that relevant patches can
reach my mail box.
Signed-off-by: Shawn Guo <shawnguo@kernel.org> Acked-by: Li Yang <leoyang.li@nxp.com>
Add support for RTC mode to low level suspend code. This includes
providing the rtc base address for the assembly code to configuring the
PMIC_PWR_EN line late in suspend to enter RTC+DDR mode.
Note: This patch also fold in left out space parameter for
am33xx_emif_sram_table and am43xx_emif_sram_table
Signed-off-by: Dave Gerlach <d-gerlach@ti.com> Signed-off-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Dave Gerlach [Mon, 9 Jul 2018 07:33:16 +0000 (13:03 +0530)]
ARM: OMAP2+: sleep33/43xx: Make sleep actions configurable
Add an argument to the sleep33xx and sleep43xx code to allow us to set
flags to determine which portions of the code get called in order to use
the same code for multiple power saving modes. This patch allows us to
decide whether or not we flush and disable caches, save EMIF context,
put the memory into self refresh and disable the EMIF, and/or invoke
the wkup_m3 when entering into WFI.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com> Signed-off-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
clk: davinci: psc-da850: remove the 'davinci_nand.0" lookup
Since commit a8e3923ab571 ("mtd: rawnand: davinci: don't acquire and
enable clock") we no longer acquire the aemif clock from the davinci
nand driver - we only do it from the ti-aemif driver. Remove the nand
entry from the psc lookup table.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Reviewed-by: David Lechner <david@lechnology.com> Signed-off-by: David Lechner <david@lechnology.com>
Dave Gerlach [Thu, 21 Jun 2018 09:13:08 +0000 (14:43 +0530)]
ARM: hwmod: RTC: Don't assume lock/unlock will be called with irq enabled
When the RTC lock and unlock functions were introduced it was likely
assumed that they would always be called from irq enabled context, hence
the use of local_irq_disable/enable. This is no longer true as the
RTC+DDR path makes a late call during the suspend path after irqs
have been disabled to enable the RTC hwmod which calls both unlock and
lock, leading to IRQs being reenabled through the local_irq_enable call
in omap_hwmod_rtc_lock call.
To avoid this change the local_irq_disable/enable to
local_irq_save/restore to ensure that from whatever context this is
called the proper IRQ configuration is maintained.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com> Signed-off-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
ARM: OMAP1: ams-delta: move late devices back to init_machine
Initialization of several Amstrad Delta devices was once moved to
late_initcall by commit f7519d8c8290 ("ARM: OMAP1: ams-delta: register
latch dependent devices later"). The purpose of that move was to allow
smooth conversion of Amstrad Delta latches to GPIO.
After successful conversion only ams_delta_serio driver was moved back
to device_initcall by commit 8d09a1bb3147 ("input: serio: ams-delta:
toggle keyboard power over GPIO"). Registration of ams-delta-nand and
lcd_ams_delta devices was kept in late_initcall in order to avoid
corrupt data reported by the serio driver on boot. Registration of
cx20442-codec device was kept there for it to be probed after a
regulator on which it depended was ready.
The issue of "keybrd_dataout" GPIO pin not initilized to GPIO_OUT_LOW
before other latch2 pins causing the corruption have been apparently
fixed by commit 5322c19b117a ("ARM: OMAP1: ams-delta: Hog
"keybrd_dataout" GPIO pin"). In turn, the issue of missing regulator
has been fixed by commit 50c678772a0b ("ASoC: cx20442: Don't ignore
regulator_get() errors.").
Simplify the board init code by moving registration of those devices
back to init_machine.
Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
The driver still obtains IRQ number from a hardcoded GPIO. Use IRQ
resource instead.
For this to work on Amstrad Delta, add the IRQ resource to
ams-delta-serio platform device structure. Obtain the IRQ number
assigned to "keybrd_clk" GPIO pin from FIQ initialization routine.
As a benefit, the driver no longer needs to include
<mach/board-ams-delta.h>.
Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
From the very beginning, input GPIO pins of ams-delta serio port have
been used by FIQ handler, not serio driver.
Don't request those pins from the ams-delta-serio driver any longer,
instead keep them requested and initialized by the FIQ initialization
routine which already requests them and releases while identifying GPIO
IRQs.
Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
ARM: OMAP1: ams-delta FIQ: don't use static GPIO numbers
With introduction of GPIO lookup tables to Amstrad Delta board init
file, semantics of symbols representing OMAP GPIO pins defined in
<mach/board-ams-delta.h> changed from statically assigned global GPIO
numbers to hardware pin numbers local to OMAP "gpio-0-15" chip.
This patch modifies deferred FIQ interrupt handler so it no longer uses
static GPIO numbers in favour of IRQ data descriptors obtained at FIQ
initialization time from descriptor of the GPIO chip with use of its
hardware pin numbers. The chip descriptor is passed from the board
init file.
As a benefit, the deferred FIQ handler should work faster.
Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
[tony@atomide.com: removed duplicate gpiochip_match_by_label] Signed-off-by: Tony Lindgren <tony@atomide.com>
"keybrd_dataout" GPIO pin used to be initialized by ams-delta-serio
driver to a state safe for ams-delta-serio device function and not
changed thereafter. As such, it may be assumed not under the driver
control and responsibility for its initialization handed over to board
init file.
Introduce a GPIO hog table and take over control of the
"keybrd_dataout" GPIO pin from the ams-delta-serio driver.
Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Input: ams_delta_serio: Replace power GPIO with regulator
Modify the driver so it no longer requests and manipulates the
"keybrd_pwr" GPIO pin but a "vcc" regulator supply instead.
For this to work with Amstrad Delta, define a regulator over the
"keybrd_pwr" GPIO pin with the "vcc" supply for ams-delta-serio device
and register it from the board file. Both assign an absulute GPIO
number to the soon depreciated .gpio member of the regulator config
structure, and also build and register a GPIO lookup table so it is
ready for use by the regulator driver as soon as its upcoming update
is applied.
Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Introduce a driver private structure and allocate it on device probe.
For now, use it instead of a static variable for storing a pointer to
serio structure. Subsequent patches will populate it with more members
as needed.
Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Input: ams_delta_serio: convert to platform driver
Convert the driver to an "ams-delta-serio" platform driver. For it to
be used with Amstrad Delta, register an "ams-delta-serio" platform
device from the board init file.
Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
ARM: OMAP1: ams-delta: drop GPIO lookup table for serio device
GPIO lookup table for ams-delta-serio device was introduced by commit 0486738928bf ("ARM: OMAP1: ams-delta: add GPIO lookup tables").
Unfortunately, a follow up patch "Input: ams_delta_serio: use GPIO
lookup table" was not accepted by subystem maintainer who requested
conversion of the driver to a platform driver, replacepemnt of IRQ GPIO
pin with IRQ resource, replacement of GPIO pin providing keyboard power
with a regulator and removal of remaining GPIO pins from the driver as
not handled by it.
Let's start with removal of the no longer needed GPIO lookup table from
the board init file.
Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
ARM: OMAP1: ams-delta: assign LED GPIO numbers from descriptors
Assign a label to latch1 GPIO device the LEDs hang off, enumerate its
pins for the purpose of indexing gpio_led table, remove hardcoded GPIO
numbers from that table replacing them with invalid GPIO numbers and
remove initialization of incompletely described LED device from
machine_init.
As soon as the latch1 GPIO device is registered, use its label to find
respective GPIO chip, identify each LED's GPIO descriptor by its pin
number and assign its gobal GPIO number to the gpio_led table. Once
completed, register the LED device.
Created and tested against linux-v4.17-rc3.
Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Before the board level GPIO handling is converted from GPIO numbers to
GPIO descriptors, split late_init() into functional blocks and move
them to separate functions.
While being at it, drop machine type check from late_init() - the
function is now called from the board init_late callback so there is
no need for yet another applicability check.
Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Arvind Yadav [Tue, 26 Dec 2017 06:37:11 +0000 (12:07 +0530)]
ARM: OMAP1: constify gpio_led
gpio_led are not supposed to change at runtime.
struct gpio_led_platform_data working with const gpio_led
provided by <linux/leds.h>. So mark the non-const structs
as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Merge tag 'for-4.18-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"We have a few regression fixes for qgroup rescan status tracking and
the vm_fault_t conversion that mixed up the error values"
* tag 'for-4.18-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
Btrfs: fix mount failure when qgroup rescan is in progress
Btrfs: fix regression in btrfs_page_mkwrite() from vm_fault_t conversion
btrfs: quota: Set rescan progress to (u64)-1 if we hit last leaf
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fix from Al Viro:
"Followup to procfs-seq_file series this window"
This fixes a memory leak by making sure that proc seq files release any
private data on close. The 'proc_seq_open' has to be properly paired
with 'proc_seq_release' that releases the extra private data.
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
proc: add proc_seq_release
Merge tag 'staging-4.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging/IIO fixes from Greg KH:
"Here are a few small staging and IIO driver fixes for 4.18-rc3.
Nothing major or big, all just fixes for reported problems since
4.18-rc1. All of these have been in linux-next this week with no
reported problems"
* tag 'staging-4.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: android: ion: Return an ERR_PTR in ion_map_kernel
staging: comedi: quatech_daqp_cs: fix no-op loop daqp_ao_insn_write()
iio: imu: inv_mpu6050: Fix probe() failure on older ACPI based machines
iio: buffer: fix the function signature to match implementation
iio: mma8452: Fix ignoring MMA8452_INT_DRDY
iio: tsl2x7x/tsl2772: avoid potential division by zero
iio: pressure: bmp280: fix relative humidity unit
Merge tag 'tty-4.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are five fixes for the tty core and some serial drivers.
The tty core ones fix some security and other issues reported by the
syzbot that I have taken too long in responding to (sorry Tetsuo!).
The 8350 serial driver fix resolves an issue of devices that used to
work properly stopping working as they shouldn't have been added to a
blacklist.
All of these have been in linux-next for a few days with no reported
issues"
* tag 'tty-4.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
vt: prevent leaking uninitialized data to userspace via /dev/vcs*
serdev: fix memleak on module unload
serial: 8250_pci: Remove stalled entries in blacklist
n_tty: Access echo_* variables carefully.
n_tty: Fix stall at n_tty_receive_char_special().
Merge tag 'usb-4.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here is a number of USB gadget and other driver fixes for 4.18-rc3.
There's a bunch of them here, most of them being gadget driver and
xhci host controller fixes for reported issues (as normal), but there
are also some new device ids, and some fixes for the typec code.
There is an acpi core patch in here that was acked by the acpi
maintainer as it is needed for the typec fixes in order to properly
solve a problem in that driver.
All of these have been in linux-next this week with no reported
issues"
* tag 'usb-4.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (33 commits)
usb: chipidea: host: fix disconnection detect issue
usb: typec: tcpm: fix logbuffer index is wrong if _tcpm_log is re-entered
typec: tcpm: Fix a msecs vs jiffies bug
NFC: pn533: Fix wrong GFP flag usage
usb: cdc_acm: Add quirk for Uniden UBC125 scanner
staging/typec: fix tcpci_rt1711h build errors
usb: typec: ucsi: Fix for incorrect status data issue
usb: typec: ucsi: acpi: Workaround for cache mode issue
acpi: Add helper for deactivating memory region
usb: xhci: increase CRS timeout value
usb: xhci: tegra: fix runtime PM error handling
usb: xhci: remove the code build warning
xhci: Fix kernel oops in trace_xhci_free_virt_device
xhci: Fix perceived dead host due to runtime suspend race with event handler
dwc2: gadget: Fix ISOC IN DDMA PID bitfield value calculation
usb: gadget: dwc2: fix memory leak in gadget_init()
usb: gadget: composite: fix delayed_status race condition when set_interface
usb: dwc2: fix isoc split in transfer with no data
usb: dwc2: alloc dma aligned buffer for isoc split in
usb: dwc2: fix the incorrect bitmaps for the ports of multi_tt hub
...
Linus Torvalds [Sat, 30 Jun 2018 21:16:30 +0000 (14:16 -0700)]
Merge branch 'parisc-4.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fixes and cleanups from Helge Deller:
"Nothing exiting in this patchset, just
- small cleanups of header files
- default to 4 CPUs when building a SMP kernel
- mark 16kB and 64kB page sizes broken
- addition of the new io_pgetevents syscall"
* 'parisc-4.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Build kernel without -ffunction-sections
parisc: Reduce debug output in unwind code
parisc: Wire up io_pgetevents syscall
parisc: Default to 4 SMP CPUs
parisc: Convert printk(KERN_LEVEL) to pr_lvl()
parisc: Mark 16kB and 64kB page sizes BROKEN
parisc: Drop struct sigaction from not exported header file
Linus Torvalds [Sat, 30 Jun 2018 20:05:30 +0000 (13:05 -0700)]
Merge tag 'kbuild-fixes-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- introduce __diag_* macros and suppress -Wattribute-alias warnings
from GCC 8
- fix stack protector test script for x86_64
- fix line number handling in Kconfig
- document that '#' starts a comment in Kconfig
- handle P_SYMBOL property in dump debugging of Kconfig
- correct help message of LD_DEAD_CODE_DATA_ELIMINATION
- fix occasional segmentation faults in Kconfig
* tag 'kbuild-fixes-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kconfig: loop boundary condition fix
kbuild: reword help of LD_DEAD_CODE_DATA_ELIMINATION
kconfig: handle P_SYMBOL in print_symbol()
kconfig: document Kconfig source file comments
kconfig: fix line numbers for if-entries in menu tree
stack-protector: Fix test with 32-bit userland and CONFIG_64BIT=y
powerpc: Remove -Wattribute-alias pragmas
disable -Wattribute-alias warning for SYSCALL_DEFINEx()
kbuild: add macro for controlling warnings to linux/compiler.h
Linus Torvalds [Sat, 30 Jun 2018 18:42:14 +0000 (11:42 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"The biggest diffstat comes from self-test updates, plus there's entry
code fixes, 5-level paging related fixes, console debug output fixes,
and misc fixes"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Clean up the printk()s in show_fault_oops()
x86/mm: Drop unneeded __always_inline for p4d page table helpers
x86/efi: Fix efi_call_phys_epilog() with CONFIG_X86_5LEVEL=y
selftests/x86/sigreturn: Do minor cleanups
selftests/x86/sigreturn/64: Fix spurious failures on AMD CPUs
x86/entry/64/compat: Fix "x86/entry/64/compat: Preserve r8-r11 in int $0x80"
x86/mm: Don't free P4D table when it is folded at runtime
x86/entry/32: Add explicit 'l' instruction suffix
x86/mm: Get rid of KERN_CONT in show_fault_oops()
Linus Torvalds [Sat, 30 Jun 2018 18:26:25 +0000 (11:26 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"Tooling fixes mostly, plus a build warning fix"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
perf/core: Move inline keyword at the beginning of declaration
tools/headers: Pick up latest kernel ABIs
perf tools: Fix crash caused by accessing feat_ops[HEADER_LAST_FEATURE]
perf script: Fix crash because of missing evsel->priv
perf script: Add missing output fields in a hint
perf bench: Fix numa report output code
perf stat: Remove duplicate event counting
perf alias: Rebuild alias expression string to make it comparable
perf alias: Remove trailing newline when reading sysfs files
perf tools: Fix a clang 7.0 compilation error
tools include uapi: Synchronize bpf.h with the kernel
tools include uapi: Update if_link.h to pick IFLA_{BRPORT_ISOLATED,VXLAN_TTL_INHERIT}
tools include powerpc: Update arch/powerpc/include/uapi/asm/unistd.h copy to get 'rseq' syscall
perf tools: Update x86's syscall_64.tbl, adding 'io_pgetevents' and 'rseq'
tools headers uapi: Synchronize drm/drm.h
perf intel-pt: Fix packet decoding of CYC packets
perf tests: Add valid callback for parse-events test
perf tests: Add event parsing error handling to parse events test
perf report powerpc: Fix crash if callchain is empty
perf test session topology: Fix test on s390
...
Linus Torvalds [Sat, 30 Jun 2018 18:15:12 +0000 (11:15 -0700)]
Merge tag 'selinux-pr-20180629' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull selinux fix from Paul Moore:
"One fairly straightforward patch to fix a longstanding issue where a
process could stall while accessing files in selinuxfs and block
everyone else due to a held mutex.
The patch passes all our tests and looks to apply cleanly to your
current tree"
* tag 'selinux-pr-20180629' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: move user accesses in selinuxfs out of locked regions
Linus Torvalds [Sat, 30 Jun 2018 17:47:46 +0000 (10:47 -0700)]
Merge tag 'for-linus-20180629' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"Small set of fixes for this series. Mostly just minor fixes, the only
oddball in here is the sg change.
The sg change came out of the stall fix for NVMe, where we added a
mempool and limited us to a single page allocation. CONFIG_SG_DEBUG
sort-of ruins that, since we'd need to account for that. That's
actually a generic problem, since lots of drivers need to allocate SG
lists. So this just removes support for CONFIG_SG_DEBUG, which I added
back in 2007 and to my knowledge it was never useful.
Anyway, outside of that, this pull contains:
- clone of request with special payload fix (Bart)
- drbd discard handling fix (Bart)
- SATA blk-mq stall fix (me)
- chunk size fix (Keith)
- double free nvme rdma fix (Sagi)"
* tag 'for-linus-20180629' of git://git.kernel.dk/linux-block:
sg: remove ->sg_magic member
drbd: Fix drbd_request_prepare() discard handling
blk-mq: don't queue more if we get a busy return
block: Fix cloning of requests with a special payload
nvme-rdma: fix possible double free of controller async event buffer
block: Fix transfer when chunk sectors exceeds max
Olof Johansson [Fri, 29 Jun 2018 21:06:49 +0000 (14:06 -0700)]
Merge tag 'hisi-fixes-for-4.18' of git://github.com/hisilicon/linux-hisi into fixes
ARM64: hisi fixes for 4.18
- Added power capabilities for the mmc host controller on the
hikey and hikey960 boards to avoid broken wifi.
* tag 'hisi-fixes-for-4.18' of git://github.com/hisilicon/linux-hisi:
arm64: dts: hikey960: Define wl1837 power capabilities
arm64: dts: hikey: Define wl1835 power capabilities
Linus Torvalds [Fri, 29 Jun 2018 19:25:26 +0000 (12:25 -0700)]
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- The alternatives patching code uses flush_icache_range() which itself
uses alternatives. Change the code to use an unpatched variant of
cache maintenance
- Remove unnecessary ISBs from set_{pte,pmd,pud}
- perf: xgene_pmu: Fix IOB SLOW PMU parser error
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Remove unnecessary ISBs from set_{pte,pmd,pud}
arm64: Avoid flush_icache_range() in alternatives patching code
drivers/perf: xgene_pmu: Fix IOB SLOW PMU parser error
Linus Torvalds [Fri, 29 Jun 2018 19:21:12 +0000 (12:21 -0700)]
Merge branch 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
- a revert because of bugzilla #200045 (and some documentation about
it)
- another regression fix in the i2c-gpio driver
- a leak fix for the i2c core
* 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: gpio: initialize SCL to HIGH again
i2c: smbus: kill memory leak on emulated and failed DMA SMBus xfers
i2c: algos: bit: mention our experience about initial states
Revert "i2c: algo-bit: init the bus to a known state"
As suggested by Nick Piggin it seems we can drop the -ffunction-sections
compile flag, now that the kernel uses thin archives. Testing with 32-
and 64-bit kernel showed no difference in kernel size.
Suggested-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Helge Deller <deller@gmx.de>
Jens Axboe [Fri, 29 Jun 2018 14:48:06 +0000 (08:48 -0600)]
sg: remove ->sg_magic member
This was introduced more than a decade ago when sg chaining was
added, but we never really caught anything with it. The scatterlist
entry size can be critical, since drivers allocate it, so remove
the magic member. Recently it's been triggering allocation stalls
and failures in NVMe.
Tested-by: Jordan Glover <Golden_Miller83@protonmail.ch> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
- Move PCI_DOMAINS selection to fix build regression (Lorenzo
Pieralisi)
* tag 'pci-v4.18-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: controller: Move PCI_DOMAINS selection to arch Kconfig
PCI: Initialize endpoint library before controllers
PCI: shpchp: Manage SHPC unconditionally on non-ACPI systems
Linus Torvalds [Fri, 29 Jun 2018 14:14:41 +0000 (07:14 -0700)]
Merge tag 'pm-4.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix up recently added features (the Kryo cpufreq driver and
performance states coverage in the generic power domains framework),
add missing documentation for a recently added sysfs knob in the
intel_pstate driver and fix an error in its documentation.
Specifics:
- Fix the initialization time error handling in the recently added
Kryo cpufreq driver (Dan Carpenter).
- Fix up the recently added coverage of performance states in the
generic power domains (genpd) framework (Viresh Kumar).
- Add missing documentation of the new hwp_dynamic_boost sysfs knob
in the intel_pstate driver (Rafael Wysocki).
- Fix incorrect sysfs path in the intel_pstate driver documentation
(Rafael Wysocki)"
* tag 'pm-4.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
Documentation: intel_pstate: Describe hwp_dynamic_boost sysfs knob
Documentation: admin-guide: intel_pstate: Fix sysfs path
PM / Domains: Rename opp_node to np
PM / Domains: Fix return value of of_genpd_opp_to_performance_state()
cpufreq: qcom-kryo: Fix error handling in probe()
Linus Torvalds [Fri, 29 Jun 2018 14:11:03 +0000 (07:11 -0700)]
Merge tag 'drm-fixes-2018-06-29' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Nothing too major this round:
- small set of mali-dp fixes
- single meson fix
- a bunch of amdgpu fixes (one makes non-4k page sizes not be a bad
experience)"
* tag 'drm-fixes-2018-06-29' of git://anongit.freedesktop.org/drm/drm:
drm/amd/display: release spinlock before committing updates to stream
drm/amdgpu:Support new VCN FW version naming convention
drm/amdgpu: fix UBSAN: Undefined behaviour for amdgpu_fence.c
drm/meson: Fix an un-handled error path in 'meson_drv_bind_master()'
drm/amdgpu: GPU vs CPU page size fixes in amdgpu_vm_bo_split_mapping
drm/amdgpu: Count disabled CRTCs in commit tail earlier
drm/mali-dp: Rectify the width and height passed to rotmem_required()
drm/arm/malidp: Preserve LAYER_FORMAT contents when setting format
drm: mali-dp: Enable Global SE interrupts mask for DP500
drm/arm/malidp: Ensure that the crtcs are shutdown before removing any encoder/connector
* tag 'for-4.18/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm: prevent DAX mounts if not supported
dax: check for QUEUE_FLAG_DAX in bdev_dax_supported()
pmem: only set QUEUE_FLAG_DAX for fsdax mode
dm thin: handle running out of data space vs concurrent discard
dm raid: don't use 'const' in function return
dm zoned: avoid triggering reclaim from inside dmz_map()
dm writecache: use 2-factor allocator arguments
dm thin metadata: remove needless work from __commit_transaction
dm: use bio_split() when splitting out the already processed bio