RX and TX clock delays are required. Request them explicitly.

Fixes: cad008b8 ("ARM: dts: tango4: Initial device trees")
Cc: stable@vger.kernel.org
Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

When resuming, set up registers that have been lost in the sleep state.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Merge tag 'renesas-fixes3-for-v4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes

Pull "Third Round of Renesas ARM Based SoC Fixes for v4.13" from Simon Horman:

Fix deadlock in regulator quirk for R-Car Gen 2 SoCs

The da9063/da9210 regulator quirk for R-Car Gen2 boards uses a bus
notifier, and unregisters the notifier when it is no longer needed.
However, a notifier must not be unregistered from within the call chain.

This bug went unnoticed, as blocking_notifier_chain_unregister() didn't
take the semaphore during early boot. This is no longer the case as of
upstream commit 1c3c5eab ("sched/core: Enable might_sleep() and
smp_processor_id() checks early") and a deadlock occurs.

* tag 'renesas-fixes3-for-v4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: rcar-gen2: Fix deadlock in regulator quirk

Pull "mvebu fixes for 4.13 (part 2)" from Gregory CLEMENT:

All the fixes are for ARM64 mvebu:

 - Fix the RTC interrupt on A7K/A8K which was missed when switching
   from GIC to ICU
 - Mark the A7K/A8K crypto engine as dma coherent
 - Fix the number of GPIO on south bridge on Armada 3700

* tag 'mvebu-fixes-4.13-2' of git://git.infradead.org/linux-mvebu:
  ARM64: dts: marvell: armada-37xx: Fix the number of GPIO on south bridge
  arm64: dts: marvell: mark the cp110 crypto engine as dma coherent
  arm64: dts: marvell: use ICU for the CP110 slave RTC

Merge tag 'amlogic-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic into fixes

Pull "Amlogic fixes for v4.13-rc" from Kevin Hilman:

- 2 minor DT fixes

* tag 'amlogic-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic:
  ARM64: dts: meson-gxl-s905x-libretech-cc: fixup board definition
  ARM64: dts: meson-gx: use specific compatible for the AO pwms

Merge tag 'v4.13-rockchip-dts32fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into fixes

Pull "Rockchip dts32 fixes for 4.13" from Heiko Stübner:

Fix for the recently added mali dt support. The example
showed a wrong value, so fix it before it gets copy-pasted
to much.

* tag 'v4.13-rockchip-dts32fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
  ARM: dts: rockchip: fix mali gpu node on rk3288
  dt-bindings: gpu: drop wrong compatible from midgard binding example

The number of pins in South Bridge is 30 and not 29. There is a fix for
the driver for the pinctrl, but a fix is also need at device tree level
for the GPIO.

Fixes: afda007f ("ARM64: dts: marvell: Add pinctrl nodes for Armada
3700")
Cc: <stable@vger.kernel.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>

Simon Horman reported that Koelsch and Lager hang during boot, and
bisected this to commit 1c3c5eab ("sched/core: Enable
might_sleep() and smp_processor_id() checks early").

The da9063/da9210 regulator quirk for R-Car Gen2 boards uses a bus
notifier, and unregisters the notifier when it is no longer needed.
However, a notifier must not be unregistered from within the call chain.

This bug went unnoticed, as blocking_notifier_chain_unregister() didn't
take the semaphore during early boot.  The aforementioned commit changed
that behavior, leading to a deadlock.

Fix this by removing the call to bus_unregister_notifier(), and keeping
local completion state instead.
Reported-by: Simon Horman <horms+renesas@verge.net.au>
Fixes: 663fbb52 ("ARM: shmobile: R-Car Gen2: Add da9063/da9210 regulator quirk")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

We get a link error trying to access the w100fb_gpio_read/write
functions from the platform when the driver is a loadable module
or not built-in, so the platform already uses 'select' to hard-enable
the driver.

However, that fails if the framebuffer subsystem is disabled
altogether.

I've considered various ways to fix this properly, but they
all seem like too much work or too risky, so this simply
adds another 'select' to force the subsystem on as well.

Fixes: 82427de2 ("ARM: pxa: PXA_ESERIES depends on FB_W100.")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

An empty macro definition can cause unexpected behavior, in
case of the ixp4xx ioport_unmap, we get two warnings:

drivers/net/wireless/marvell/libertas/if_cs.c: In function 'if_cs_release':
drivers/net/wireless/marvell/libertas/if_cs.c:826:3: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
   ioport_unmap(card->iobase);
drivers/vfio/pci/vfio_pci_rdwr.c: In function 'vfio_pci_vga_rw':
drivers/vfio/pci/vfio_pci_rdwr.c:230:15: error: the omitted middle operand in ?: will always be 'true', suggest explicit middle operand [-Werror=parentheses]
   is_ioport ? ioport_unmap(iomem) : iounmap(iomem);

This uses an inline function to define the macro in a safer way.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Krzysztof Halasa <khalasa@piap.pl>

Just like ARCH_MULTIPLATFORM, we want to use ARM_PATCH_PHYS_VIRT
when possible, but that fails for NOMMU or XIP_KERNEL configurations.
Using 'imply' instead of 'select' gets this right and only uses
the symbol when we don't have to hardcode the address anyway.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>

This variable may be used by some devices that each have their
on Kconfig symbol, or by none of them, and that causes a build
warning:

arch/arm/mach-mmp/devices.c:241:12: error: 'usb_dma_mask' defined but not used [-Werror=unused-variable]

Marking it __maybe_unused avoids the warning.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

The omap_generic_init() and omap_hwmod_init_postsetup() functions are
used in the initialization for all OMAP2+ SoC types, but in the
extreme case that those are all disabled, we get a warning about
unused code:

arch/arm/mach-omap2/io.c:412:123: error: 'omap_hwmod_init_postsetup' defined but not used [-Werror=unused-function]
arch/arm/mach-omap2/board-generic.c:30:123: error: 'omap_generic_init' defined but not used [-Werror=unused-function]

This annotates both as __maybe_unused to shut up that warning.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>

The osk_mistral_init() contains code that is only compiled when
CONFIG_PM is set, but it uses a variable that is declared outside
of the #ifdef:

arch/arm/mach-omap1/board-osk.c: In function 'osk_mistral_init':
arch/arm/mach-omap1/board-osk.c:513:7: warning: unused variable 'ret' [-Wunused-variable]

This removes the #ifdef around the user of the variable,
make it always used.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Suggested-by: Tony Lindgren <tony@atomide.com>
Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi>

sirfsoc_init_late is called by each of the three individual
SoC definitions, but in a randconfig build, we can encounter
a situation where they are all disabled:

arch/arm/mach-prima2/common.c:18:123: warning: 'sirfsoc_init_late' defined but not used [-Wunused-function]

While that is not a useful configuration, the warning also
doesn't help, so this patch marks the function as __maybe_unused
to let the compiler know it is there intentionally.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

ixp4xx defines the arguments to its __indirect_writesb() and other
functions as pointers to fixed-size data. This is not necessarily
wrong, and it works most of the time, but it causes warnings in
at least one driver:

drivers/net/ethernet/smsc/smc91x.c: In function 'smc_rcv':
drivers/net/ethernet/smsc/smc91x.c:495:21: error: passing argument 2 of '__indirect_readsw' from incompatible pointer type [-Werror=incompatible-pointer-types]
   SMC_PULL_DATA(lp, data, packet_len - 4);

All other definitions of the same functions pass void pointers,
so doing the same here avoids the warnings.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Krzysztof Halasa <khalasa@piap.pl>

The modem pm handler in the ams-delta board uses regulator_enable()
but does not check for a successful return code:

board-ams-delta.c:521:3: error: ignoring return value of 'regulator_enable', declared with attribute warn_unused_result [-Werror=unused-result]

It is not easy to propagate that return code to the callers in
uart_configure_port/uart_suspend_port/uart_resume_port, unless
we change all UART drivers, and it is unclear what those would
do with the return code.

Instead, this patch uses a runtime warning to replace the
compiletime warning. I have checked that the regulator in question
is hardcoded to a fixed-voltage GPIO regulator, and that should
never fail to get enabled if I understand the code right.
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Link: https://patchwork.kernel.org/patch/8391981/Signed-off-by: Arnd Bergmann <arnd@arndb.de>

The RAM_SIZE macro in mach/hardware.h conflicts with macros of
the same name in multiple drivers, leading to annoying build warnings:

In file included from drivers/net/ethernet/cirrus/cs89x0.c:79:0:
drivers/net/ethernet/cirrus/cs89x0.h:324:0: error: "RAM_SIZE" redefined [-Werror]
 #define RAM_SIZE 0x1000       /*  The card has 4k bytes or RAM */
 ^
In file included from /git/arm-soc/arch/arm/mach-rpc/include/mach/io.h:16:0,
                 from /git/arm-soc/arch/arm/include/asm/io.h:194,
                 from /git/arm-soc/include/linux/scatterlist.h:8,
                 from /git/arm-soc/include/linux/dmaengine.h:24,
                 from /git/arm-soc/include/linux/netdevice.h:38,
                 from /git/arm-soc/drivers/net/ethernet/cirrus/cs89x0.c:54:
arch/arm/mach-rpc/include/mach/hardware.h:28:0: note: this is the location of the previous definition
 #define RAM_SIZE  0x10000000

We don't use RAM_SIZE/RAM_START at all, so we could just remove
them, but it might be nice to leave them for documentation purposes,
so this renames them to RPC_RAM_SIZE/RPC_RAM_START in order to
avoid the build warnings
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

w90x900 still provides its own variant of the clk API rather than using
the generic COMMON_CLK API. This generally works, but it causes some link
errors with drivers using the clk_set_rate, clk_get_parent, clk_set_parent
or clk_round_rate functions when a platform lacks those interfaces.

This adds empty stub implementations for each of them, and I don't even
try to do something useful here but instead just print a WARN() message
to make it obvious what is going on if they ever end up being called.

The drivers that call these won't be used on these platforms (otherwise
we'd get a link error today), so the added code is harmless bloat and
will warn about accidental use.

A while ago there was a proposal to change w90x900 to use the common-clk
implementation, which would be the way it should be handled properly.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

It's a combination of the patch from Arnd Bergmann, which added empty stubs
for clk_round_rate() and clk_set_parent() and a working trivial
implementation of clk_get_parent(). The later is required for ADC driver.
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

sa1100 provides its own variant of the clk API rather than using the
generic COMMON_CLK API. This generally works, but it causes some link
errors with drivers using the clk_set_rate, clk_get_parent, clk_set_parent
or clk_round_rate functions when a platform lacks those interfaces.

This adds trivial stub implementations for each of them, based on
the behavior of the COMMON_CLK implementation:

- set_rate() and set_parent() report success without doing anything
- round_rate() returns the clk rate
- get_parent() returns NULL.

This adds the minimal bloat and should do the right thing for
the simple clock hardware in this SoC.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

davinci still has its own clk implementation, but lacks
a clk_get_parent() helper, which can lead to link errors
in randconfig builds.

This adds the usual implementation.
Acked-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

In commit 3169663a "ARM: sa11x0/pxa: convert OS timer registers
to IOMEM", the definition of the OSCR macro was changed to be an
__iomem pointer, but the same register is also used by the XIP
code. This patch does the corresponding change here as well.

On PXA, the IRQ register definitions were removed even earlier, in
commit 5d284e35 ("ARM: pxa: avoid accessing interrupt registers
directly"). This patch unfortunately brings some of that back. An
earlier version of my patch moved the code into an external function,
which could not work for CONFIG_XIP_KERNEL+CONFIG_MTD_XIP, so this
restores something close to the original code.

Link: http://lists.infradead.org/pipermail/linux-arm-kernel/2014-March/241716.htmlAcked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

A change to the platform data definitions caused a warning in the board code:

arch/arm/mach-davinci/board-da850-evm.c:1221:13: warning: initialization discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
arch/arm/mach-davinci/board-da850-evm.c:1231:13: warning: initialization discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]

This is a bit unfortunate, since we generally like structure definitions to
be const, but as this is legacy code, the easiest way out is still to
remove the 'const' annotation here.

Fixes: 4a5f8ae5 ("[media] davinci: vpif_capture: get subdevs from DT when available")
Fixes: 231ce279 ("ARM: davinci: fix const warnings")
Acked-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

The ZTE SoC drivers are only useful when building for a ZTE ZX platform.

Fixes: 4c2c2e39 ("soc: zte: pm_domains: Prepare for supporting ARMv8 zx2967 family")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Baoyou Xie <baoyou.xie@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Pull "mvebu fixes for 4.13 (part 1)" from Gregory CLEMENT:

- Fix wrong irq type for gpio expeander on Armada 388 GP
- Use __pa_symbol instead of virt_to_phys in the mv98dx3236 platform
  SMP code

* tag 'mvebu-fixes-4.13-1' of git://git.infradead.org/linux-mvebu:
  ARM: dts: armada-38x: Fix irq type for pca955
  ARM: mvebu: use __pa_symbol in the mv98dx3236 platform SMP code

Add necessary parent clocks for audss (Audio SubSystem, MAUDIO) clock
controller block.

This allows driver to keep EPLL enabled before accessing any MAUDIO
registers thus fixing silent hang.  This silent hang appeared with
commit 6edfa11c ("clk: samsung: Add enable/disable operation for
PLL36XX clocks"), e.g. on Odroid U3 usually with last (but unrelated)
messages:

	[    2.382741] input: gpio_keys as /devices/platform/gpio_keys/input/input0
	[    2.405686] usb 1-3: new high-speed USB device number 3 using exynos-ehci
	[    2.419843] max77686-rtc max77686-rtc: setting system clock to 2017-06-21 17:04:13 UTC (1498064653)
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Merge tag 'renesas-fixes2-for-v4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes

Pull "Second Round of Renesas ARM Based SoC Fixes for v4.13" from Simon Horman:

Correct order of sound clock frequencies for ULCB boards
used by r8a7795 and r8a7796 SoCs.

These sounds clock frequencies are used as the ADG clock (output clocks
for audio module) initial setting and sound codec's initial system clock
which needs the maximum clock frequency. Thus, descending order is
required.

* tag 'renesas-fixes2-for-v4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  arm64: dts: renesas: ulcb: sound clock-frequency needs descending order

Merge tag 'omap-for-v4.13/fixes-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

Pull "Few fixes for omaps for issues found recently" from Tony Lindgren:

- Fix disable_irq related shared IRQ warnings for omap3 PRM

- Fix omap4 legacy code regression that accidentally removed code that
  we still need for PRM interrupts

- Fix dm8168-evm NAND pins and MMC write protect pin direction

- Fix dra71-evm mdio impedance values

* tag 'omap-for-v4.13/fixes-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: dts: dra71-evm: mdio: Fix impedance values
  ARM: dts: dm816x: Correct the state of the write protect pin
  ARM: dts: dm816x: Correct NAND support nodes
  ARM: OMAP4: Fix legacy code clean-up regression
  ARM: OMAP2+: Fix omap3 prm shared irq

Merge tag 'renesas-fixes-for-v4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes

Pull "Renesas ARM Based SoC Fixes for v4.13" from Simon Horman:

Correct order of sound clock frequencies for Salvator boards
used by r8a7795 and r8a7796 SoCs.

These sounds clock frequencies are used as the ADG clock (output clocks
for audio module) initial setting and sound codec's initial system clock
which needs the maximum clock frequency. Thus, descending order is
required.

* tag 'renesas-fixes-for-v4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  arm64: renesas: salvator-common: sound clock-frequency needs descending order

This adds a perl script to actually parse the MAINTAINERS file, clean up
some whitespace in it, warn about errors in it, and then properly sort
the end result.

My perl-fu is atrocious, so the script has basically been created by
randomly putting various characters in a pile, mixing them around, and
then looking it the end result does anything interesting when used as a
perl script.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Prepping for scripting the MAINTAINERS file cleanup (and possible split)
showed a couple of cases where the headers for a couple of entries were
bogus.

There's a few different kinds of bogosities:

 - the X-GENE SOC EDAC case was confused and split over two lines

 - there were four entries for "GREYBUS PROTOCOLS DRIVERS" that were all
   different things.

 - the NOKIA N900 CAMERA SUPPORT" was duplicated

all of which were more obvious when you started doing associative arrays
in perl to track these things by the header (so that we can alphabetize
this thing properly, and so that we might split it up by the data too).

Cc: Joe Perches <joe@perches.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull xen fixes from Juergen Gross:
 "Some fixes and cleanups for running under Xen"

* tag 'for-linus-4.13b-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/balloon: don't online new memory initially
  xen/x86: fix cpu hotplug
  xen/grant-table: log the lack of grants
  xen/x86: Don't BUG on CPU0 offlining

When setting up the Xenstore watch for the memory target size the new
watch will fire at once. Don't try to reach the configured target size
by onlining new memory in this case, as the current memory size will
be smaller in almost all cases due to e.g. BIOS reserved pages.

Onlining new memory will lead to more problems e.g. undesired conflicts
with NVMe devices meant to be operated as block devices.

Instead remember the difference between target size and current size
when the watch fires for the first time and apply it to any further
size changes, too.

In order to avoid races between balloon.c and xen-balloon.c init calls
do the xen-balloon.c initialization from balloon.c.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>

Commit dc6416f1 ("xen/x86: Call
cpu_startup_entry(CPUHP_AP_ONLINE_IDLE) from xen_play_dead()")
introduced an error leading to a stack overflow of the idle task when
a cpu was brought offline/online many times: by calling
cpu_startup_entry() instead of returning at the end of xen_play_dead()
do_idle() would be entered again and again.

Don't use cpu_startup_entry(), but cpuhp_online_idle() instead allowing
to return from xen_play_dead().

Cc: <stable@vger.kernel.org> # 4.12
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>

log a message when we enter this situation:
1) we already allocated the max number of available grants from hypervisor
and
2) we still need more (but the request fails because of 1)).

Sometimes the lack of grants causes IO hangs in xen_blkfront devices.
Adding this log would help debuging.
Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Junxiao Bi <junxiao.bi@oracle.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>

CONFIG_BOOTPARAM_HOTPLUG_CPU0 allows to offline CPU0 but Xen HVM guests
BUG() in xen_teardown_timer(). Remove the BUG_ON(), this is probably a
leftover from ancient times when CPU0 hotplug was impossible, it works
just fine for HVM.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Acked-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>

Merge tag 'hwmon-for-linus-v4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon fix from Guenter Roeck:
 "Avoid buffer overruns in applesmc driver"

* tag 'hwmon-for-linus-v4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (applesmc) Avoid buffer overruns

Pull tty/serial fixes from Greg KH:
 "Here are some small tty and serial driver fixes for 4.13-rc2. Nothing
  huge at all, a revert of a patch that turned out to break things, a
  fix up for a new tty ioctl we added in 4.13-rc1 to get the uapi
  definition correct, and a few minor serial driver fixes for reported
  issues.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'tty-4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: Fix TIOCGPTPEER ioctl definition
  tty: hide unused pty_get_peer function
  tty: serial: lpuart: Fix the logic for detecting the 32-bit type UART
  serial: imx: Prevent TX buffer PIO write when a DMA has been started
  Revert "serial: imx-serial - move DMA buffer configuration to DT"
  serial: sh-sci: Uninitialized variables in sysfs files
  serial: st-asc: Potential error pointer dereference