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[ Upstream commit 88af3209aa0881aa5ffd99664b6080a4be5f24e5 ]
WARNING: vmlinux.o(.text+0x19f90): Section mismatch in reference from the function littleton_init_lcd() to the function .init.text:pxa_set_fb_info()
The function littleton_init_lcd() references
the function __init pxa_set_fb_info().
This is often because littleton_init_lcd lacks a __init
annotation or the annotation of pxa_set_fb_info is wrong.
WARNING: vmlinux.o(.text+0xf824): Section mismatch in reference from the function zeus_register_ohci() to the function .init.text:pxa_set_ohci_info()
The function zeus_register_ohci() references
the function __init pxa_set_ohci_info().
This is often because zeus_register_ohci lacks a __init
annotation or the annotation of pxa_set_ohci_info is wrong.
WARNING: vmlinux.o(.text+0xf95c): Section mismatch in reference from the function cm_x300_init_u2d() to the function .init.text:pxa3xx_set_u2d_info()
The function cm_x300_init_u2d() references
the function __init pxa3xx_set_u2d_info().
This is often because cm_x300_init_u2d lacks a __init
annotation or the annotation of pxa3xx_set_u2d_info is wrong.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 79da07dec740a42c70963ebacbd2bf8866af9e20 ]
TPA6130A2 SD pin on RDU1 is not really controlled by SoC and instead
is only meant to notify the system that audio was "muted" by external
actors. To accommodate that, drop "power-gpio" property of hpa1 node as
well as specify a name for that GPIO so that userspace can access it.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Tested-by: Chris Healy <cphealy@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 738a05e673435afb986b53da43befd83ad87ec3b ]
The vendor firmware was analyzed to get the right idea about
this flash layout. /proc/mtd contains:
dev: size erasesize name
mtd0: 01e7ff40 00020000 "rootfs"
mtd1: 01f40000 00020000 "upgrade"
mtd2: 00040000 00020000 "rgdb"
mtd3: 00020000 00020000 "nvram"
mtd4: 00040000 00020000 "RedBoot"
mtd5: 00020000 00020000 "LangPack"
mtd6: 02000000 00020000 "flash"
Here "flash" is obviously the whole device and we know "rootfs"
is a bogus hack to point to a squashfs rootfs inside of the main
"upgrade partition". We know "RedBoot" is the first 0x40000 of
the flash and the "upgrade" partition follows from 0x40000 to
0x1f8000. So we have mtd0, 1, 4 and 6 covered.
Remains:
mtd2: 00040000 00020000 "rgdb"
mtd3: 00020000 00020000 "nvram"
mtd5: 00020000 00020000 "LangPack"
Inspecting the flash at 0x1f8000 and 0x1fa000 reveals each of
these starting with "RGCFG1" so we assume 0x1f8000-1fbfff is
"rgdb" of 0x40000.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 84fb6c7feb1494ebb7d1ec8b95cfb7ada0264465 ]
It was noticed that unbinding and rebinding the KSZ8851 ethernet
resulted in the driver reporting "failed to read device ID" at probe.
Probing the reset line with a 'scope while repeatedly attempting to
bind the driver in a shell loop revealed that the KSZ8851 RSTN pin is
constantly held at zero, meaning the device is held in reset, and
does not respond on the SPI bus.
Experimentation with the startup delay on the regulator set to 50ms
shows that the reset is positively released after 20ms.
Schematics for this board are not available, and the traces are buried
in the inner layers of the board which makes tracing where the RSTN pin
extremely difficult. We can only guess that the RSTN pin is wired to a
reset generator chip driven off the ethernet supply, which fits the
observed behaviour.
Include this delay in the regulator startup delay - effectively
treating the reset as a "supply stable" indicator.
This can not be modelled as a delay in the KSZ8851 driver since the
reset generation is board specific - if the RSTN pin had been wired to
a GPIO, reset could be released earlier via the already provided support
in the KSZ8851 driver.
This also got confirmed by Peter Ujfalusi <peter.ujfalusi@ti.com> based
on Blaze schematics that should be very close to SDP4430:
TPS22902YFPR is used as the regulator switch (gpio48 controlled):
Convert arm boot_lock to raw The VOUT is routed to TPS3808G01DBV.
(SCH Note: Threshold set at 90%. Vsense: 0.405V).
According to the TPS3808 data sheet the RESET delay time when Ct is
open (this is the case in the schema): MIN/TYP/MAX: 12/20/28 ms.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
[tony@atomide.com: updated with notes from schematics from Peter]
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 2afdb4c41d7876e430b9bc6e2d7e2fe28609fd6a ]
Since commit 1137ceee76ba ("ARM: OMAP1: ams-delta: Don't request unused
GPIOs"), on-board audio has appeared muted. Believed to be unused GPIO
pin "hookflash1", apparently set high regardless of the corresponding
bit of "latch2" port attempted to be set low during .init_machine(),
has been identified as the reason.
According to Amstrad E3 wiki, the purpose of the pin hasn't been
clearly identified. Original Amstrad software used to produce a high
pulse on it when the phone was taken off hook or recall was pressed.
With the current finding, we can assume the pin provides a kind of
audio mute function.
Proper resolution of the issue should be done in two steps:
- resolution of an issue with the pin state not reflecting the value
the corresponding bit of the port was attempted to be initialized
with,
- extension of on-board audio driver with a new control.
For now, rename the pin to "audio_mute" to reflect its function and,
as a quick fix, hogg it as output low so on-board audio can produce
audible sound again.
Fixes: 1137ceee76ba ("ARM: OMAP1: ams-delta: Don't request unused GPIOs")
Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 8ef86955fe59f7912a40d57ae4c6d511f0187b4d ]
The base aspeed-g5.dtsi already defines a '/memory@80000000' node, so
'/memory' in the board files create a duplicate node. We're probably
getting lucky that the bootloader fixes up the memory node that the
kernel ends up using. Add the unit-address so it's merged with the base
node.
Found with DT json-schema checks.
Cc: Joel Stanley <joel@jms.id.au>
Cc: Andrew Jeffery <andrew@aj.id.au>
Cc: devicetree@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-aspeed@lists.ozlabs.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 1147e05ac9fc2ef86a3691e7ca5c2db7602d81dd ]
Marvell keeps their MMP2 datasheet secret, but there are good clues
that TWSI2 is not on 0xd4025000 on that platform, not does it use
IRQ 58. In fact, the IRQ 58 on MMP2 seems to be a signal processor:
arch/arm/mach-mmp/irqs.h:#define IRQ_MMP2_MSP 58
I'm taking a somewhat educated guess that is probably a copy & paste
error from PXA168 or PXA910 and that the real controller in fact hides
at address 0xd4031000 and uses an interrupt line multiplexed via IRQ 17.
I'm also copying some properties from TWSI1 that were missing or
incorrect.
Tested on a OLPC XO 1.75 machine, where the RTC is on TWSI2.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Tested-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit c10b26abeb53cabc1e6271a167d3f3d396ce0218 ]
When building the kernel with Clang, the following section mismatch
warnings appears:
WARNING: vmlinux.o(.text+0x2d398): Section mismatch in reference from
the function _setup() to the function .init.text:_setup_iclk_autoidle()
The function _setup() references
the function __init _setup_iclk_autoidle().
This is often because _setup lacks a __init
annotation or the annotation of _setup_iclk_autoidle is wrong.
WARNING: vmlinux.o(.text+0x2d3a0): Section mismatch in reference from
the function _setup() to the function .init.text:_setup_reset()
The function _setup() references
the function __init _setup_reset().
This is often because _setup lacks a __init
annotation or the annotation of _setup_reset is wrong.
WARNING: vmlinux.o(.text+0x2d408): Section mismatch in reference from
the function _setup() to the function .init.text:_setup_postsetup()
The function _setup() references
the function __init _setup_postsetup().
This is often because _setup lacks a __init
annotation or the annotation of _setup_postsetup is wrong.
_setup is used in omap_hwmod_allocate_module, which isn't marked __init
and looks like it shouldn't be, meaning to fix these warnings, those
functions must be moved out of the init section, which this patch does.
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 82c08c3e7f171aa7f579b231d0abbc1d62e91974 ]
In case panic() and panic() called at the same time on different CPUS.
For example:
CPU 0:
panic()
__crash_kexec
machine_crash_shutdown
crash_smp_send_stop
machine_kexec
BUG_ON(num_online_cpus() > 1);
CPU 1:
panic()
local_irq_disable
panic_smp_self_stop
If CPU 1 calls panic_smp_self_stop() before crash_smp_send_stop(), kdump
fails. CPU1 can't receive the ipi irq, CPU1 will be always online.
To fix this problem, this patch split out the panic_smp_self_stop()
and add set_cpu_online(smp_processor_id(), false).
Signed-off-by: Yufen Wang <wangyufen@huawei.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit 65dbb423cf28232fed1732b779249d6164c5999b upstream.
Originally, cns3xxx used its own functions for mapping, reading and
writing config registers.
Commit 802b7c06adc7 ("ARM: cns3xxx: Convert PCI to use generic config
accessors") removed the internal PCI config write function in favor of
the generic one:
cns3xxx_pci_write_config() --> pci_generic_config_write()
cns3xxx_pci_write_config() expected aligned addresses, being produced by
cns3xxx_pci_map_bus() while the generic one pci_generic_config_write()
actually expects the real address as both the function and hardware are
capable of byte-aligned writes.
This currently leads to pci_generic_config_write() writing to the wrong
registers.
For instance, upon ath9k module loading:
- driver ath9k gets loaded
- The driver wants to write value 0xA8 to register PCI_LATENCY_TIMER,
located at 0x0D
- cns3xxx_pci_map_bus() aligns the address to 0x0C
- pci_generic_config_write() effectively writes 0xA8 into register 0x0C
(CACHE_LINE_SIZE)
Fix the bug by removing the alignment in the cns3xxx mapping function.
Fixes: 802b7c06adc7 ("ARM: cns3xxx: Convert PCI to use generic config accessors")
Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
[lorenzo.pieralisi@arm.com: updated commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Krzysztof Halasa <khalasa@piap.pl>
Acked-by: Tim Harvey <tharvey@gateworks.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
CC: stable@vger.kernel.org # v4.0+
CC: Bjorn Helgaas <bhelgaas@google.com>
CC: Olof Johansson <olof@lixom.net>
CC: Robin Leblon <robin.leblon@ncentric.com>
CC: Rob Herring <robh@kernel.org>
CC: Russell King <linux@armlinux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Commit d6951f582cc50ba0ad22ef46b599740966599b14 upstream.
The intention in the previous patch was to only place the processor
tables in the .rodata section if big.Little was being built and we
wanted the branch target hardening, but instead (due to the way it
was tested) it ended up always placing the tables into the .rodata
section.
Although harmless, let's correct this anyway.
Fixes: 3a4d0c2172bc ("ARM: ensure that processor vtables is not lost after boot")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David A. Long <dave.long@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit cc557afb4d10cba175fd08d51c557004a229eded upstream.
Since commit 587f7a694f01 ("gpio: davinci: Use dev name for label and
automatic base selection") the gpiochip label no longer has an ID
suffix. Update the GPIO lookup entries.
Fixes: 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection")
Cc: stable@vger.kernel.org
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 7f1015b29d9b9eb1cd3c038d6c30d698c6d7782e upstream.
Since commit 587f7a694f01 ("gpio: davinci: Use dev name for label and
automatic base selection") the gpiochip label no longer has an ID
suffix. Update the GPIO lookup entries.
Fixes: 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection")
Cc: stable@vger.kernel.org
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 054b8dc381b1c784852ad3e109270d236a58b71d upstream.
Since commit 587f7a694f01 ("gpio: davinci: Use dev name for label and
automatic base selection") the gpiochip label no longer has an ID
suffix. Update the GPIO lookup entries.
Fixes: 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection")
Cc: stable@vger.kernel.org
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit c3f08cceb6a59f328f1c847b002729d1584c7a32 upstream.
Since commit 587f7a694f01 ("gpio: davinci: Use dev name for label and
automatic base selection") the gpiochip label no longer has an ID
suffix. Update the GPIO lookup entries.
Fixes: 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection")
Cc: stable@vger.kernel.org
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 94777ed3b644a1af09843f729b2a3f25794bed0f upstream.
Since commit 587f7a694f01 ("gpio: davinci: Use dev name for label and
automatic base selection") the gpiochip label no longer has an ID
suffix. Update the GPIO lookup entries.
Fixes: 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection")
Cc: stable@vger.kernel.org
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 8ac686d7dfed721102860ff2571e6b9f529ae81a upstream.
The assigned parent clocks should be normally specified in the consumer
device's DT node, this ensures respective driver always sees correct clock
settings when required.
This patch fixes regression in audio subsystem on Odroid XU3/XU4 boards
that appeared after commits:
commit 647d04f8e07a ("ASoC: samsung: i2s: Ensure the RCLK rate is properly determined")
commit 995e73e55f46 ("ASoC: samsung: i2s: Fix rclk_srcrate handling")
commit 48279c53fd1d ("ASoC: samsung: i2s: Prevent external abort on exynos5433 I2S1 access")
Without this patch the driver gets wrong clock as the I2S function clock
(op_clk) in probe() and effectively the clock which is finally assigned
from DT is not being enabled/disabled in the runtime resume/suspend ops.
Without the above listed commits the EXYNOS_I2S_BUS clock was always set
as parent of CLK_I2S_RCLK_SRC regardless of DT settings so there was no issue
with not enabled EXYNOS_SCLK_I2S.
Cc: <stable@vger.kernel.org> # 4.17.x
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"The usual batch; most of them are DT tweaks to fix misdescribed
hardware. Beyond that:
- A bugfix for MMP2 CPU detection, it's been there quite a while but
makes sense to fix now anyway.
- Some power management tweaks:
+ disabling of CPU idle power state on Marvell Armada 7K/8K
(Macchiatobin et al)
+ Increase of minimum voltage on BananaPi M3
+ Tweak of power ramp time for DVFS on NXP/Freescale i.MX7SX
- A couple of MAINTAINER updates:
+ MMP has a new volunteer to look after it
+ Mediatek adds a few keywords, IRC channel and wiki URL"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: dts: imx7d-nitrogen7: Fix the description of the Wifi clock
ARM: imx: update the cpu power up timing setting on i.mx6sx
Revert "arm64: dts: marvell: add CPU Idle power state support on Armada 7K/8K"
ARM: dts: imx7d-pico: Describe the Wifi clock
ARM: dts: realview: Fix some more duplicate regulator nodes
MAINTAINERS: update entry for MMP platform
ARM: mmp/mmp2: fix cpu_is_mmp2() on mmp2-dt
MAINTAINERS: mediatek: Update SoC entry
ARM: dts: bcm2837: Fix polarity of wifi reset GPIOs
arm64: dts: mt7622: Drop the general purpose timer node
arm64: dts: mt7622: fix no more console output on BPI-R64 board
arm64: dts: mt7622: fix no more console output on rfb1
ARM: dts: sun8i: a83t: bananapi-m3: increase vcc-pd voltage to 3.3V
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https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into fixes
Allwinner fixes for 4.20
One small fix for a regulator range on the Banana Pi M3
* tag 'sunxi-fixes-for-4.20' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
ARM: dts: sun8i: a83t: bananapi-m3: increase vcc-pd voltage to 3.3V
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into fixes
i.MX fixes for 4.20, round 3:
- A couple of fixes on imx7d-pico and imx7d-nitrogen7 boards to correct
the description of the Wifi clock.
- Change SW2ISO count to get a safer ARM LDO ramp-up time, so that
different boards can be covered. This fixes the ARM LDO failure seen
on some customer boards.
* tag 'imx-fixes-4.20-3' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: dts: imx7d-nitrogen7: Fix the description of the Wifi clock
ARM: imx: update the cpu power up timing setting on i.mx6sx
ARM: dts: imx7d-pico: Describe the Wifi clock
Signed-off-by: Olof Johansson <olof@lixom.net>
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Pull ARM spectre fix from Russell King:
"Exynos folk noticed that CPU hotplug wasn't working with their kernel
configuration, and have tested this as fixing the problem"
* 'spectre' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: ensure that processor vtables is not lost after boot
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Pull ARM fixes from Russell King:
"Some small fixes that have been accumulated:
- Chris Cole noticed that in a SMP environment, the DMA cache
coherence handling can produce undesirable results in a corner
case
- Propagate that fix for ARMv7M as well
- Fix a false positive with source fortification
- Fix an uninitialised return that Nathan Jones spotted"
* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 8816/1: dma-mapping: fix potential uninitialized return
ARM: 8815/1: V7M: align v7m_dma_inv_range() with v7 counterpart
ARM: 8814/1: mm: improve/fix ARM v7_dma_inv_range() unaligned address handling
ARM: 8806/1: kprobes: Fix false positive with FORTIFY_SOURCE
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Marek Szyprowski reported problems with CPU hotplug in current kernels.
This was tracked down to the processor vtables being located in an
init section, and therefore discarded after kernel boot, despite being
required after boot to properly initialise the non-boot CPUs.
Arrange for these tables to end up in .rodata when required.
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Krzysztof Kozlowski <krzk@kernel.org>
Fixes: 383fb3ee8024 ("ARM: spectre-v2: per-CPU vtables to work around big.Little systems")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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According to bindings/regulator/fixed-regulator.txt the 'clocks' and
'clock-names' properties are not valid ones.
In order to turn on the Wifi clock the correct location for describing
the CLKO2 clock is via a mmc-pwrseq handle, so do it accordingly.
Fixes: 56354959cfec ("ARM: dts: imx: add Boundary Devices Nitrogen7 board")
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Acked-by: Troy Kisky <troy.kisky@boundarydevices.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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The sw2iso count should cover ARM LDO ramp-up time,
the MAX ARM LDO ramp-up time may be up to more than
100us on some boards, this patch sets sw2iso to 0xf
(~384us) which is the reset value, and it is much
more safe to cover different boards, since we have
observed that some customer boards failed with current
setting of 0x2.
Fixes: 05136f0897b5 ("ARM: imx: support arm power off in cpuidle for i.mx6sx")
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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The Wifi chip should be clocked by a 32kHz clock coming from i.MX7D
CLKO2 output pin, so describe the pinmux and clock hierarchy in the
device tree to allow the Wifi chip to be properly clocked.
Managed to successfully test Wifi with such change. Used the standard
nvram.txt file provided by TechNexion, which selects an external 32kHz
clock for the Wifi chip by default.
Fixes: 99a52450c707 ("ARM: dts: imx7d-pico: Add Wifi support")
Suggested-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Tested-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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While trying to use the dma_mmap_*() interface, it was noticed that this
interface returns strange values when passed an incorrect length.
If neither of the if() statements fire then the return value is
uninitialized. In the worst case it returns 0 which means the caller
will think the function succeeded.
Fixes: 1655cf8829d8 ("ARM: dma-mapping: Remove traces of NOMMU code")
Signed-off-by: Nathan Jones <nathanj439@gmail.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Chris has discovered and reported that v7_dma_inv_range() may corrupt
memory if address range is not aligned to cache line size.
Since the whole cache-v7m.S was lifted form cache-v7.S the same
observation applies to v7m_dma_inv_range(). So the fix just mirrors
what has been done for v7 with a little specific of M-class.
Cc: Chris Cole <chris@sageembedded.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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This patch addresses possible memory corruption when
v7_dma_inv_range(start_address, end_address) address parameters are not
aligned to whole cache lines. This function issues "invalidate" cache
management operations to all cache lines from start_address (inclusive)
to end_address (exclusive). When start_address and/or end_address are
not aligned, the start and/or end cache lines are first issued "clean &
invalidate" operation. The assumption is this is done to ensure that any
dirty data addresses outside the address range (but part of the first or
last cache lines) are cleaned/flushed so that data is not lost, which
could happen if just an invalidate is issued.
The problem is that these first/last partial cache lines are issued
"clean & invalidate" and then "invalidate". This second "invalidate" is
not required and worse can cause "lost" writes to addresses outside the
address range but part of the cache line. If another component writes to
its part of the cache line between the "clean & invalidate" and
"invalidate" operations, the write can get lost. This fix is to remove
the extra "invalidate" operation when unaligned addressed are used.
A kernel module is available that has a stress test to reproduce the
issue and a unit test of the updated v7_dma_inv_range(). It can be
downloaded from
http://ftp.sageembedded.com/outgoing/linux/cache-test-20181107.tgz.
v7_dma_inv_range() is call by dmac_[un]map_area(addr, len, direction)
when the direction is DMA_FROM_DEVICE. One can (I believe) successfully
argue that DMA from a device to main memory should use buffers aligned
to cache line size, because the "clean & invalidate" might overwrite
data that the device just wrote using DMA. But if a driver does use
unaligned buffers, at least this fix will prevent memory corruption
outside the buffer.
Signed-off-by: Chris Cole <chris@sageembedded.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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https://github.com/Broadcom/stblinux into fixes
This pull request contains Broadcom ARM-based SoCs Device Tree fixes,
please pull the following for 4.20:
- Stefan fixes the polariy of the Wi-Fi reset GPIOs signals which would
break on Raspberry Pi 3B and 3B+
* tag 'arm-soc/for-4.20/devicetree-fixes' of https://github.com/Broadcom/stblinux:
ARM: dts: bcm2837: Fix polarity of wifi reset GPIOs
Signed-off-by: Olof Johansson <olof@lixom.net>
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There's a bug in dtc in checking for duplicate node names when there's
another section (e.g. "/ { };"). In this case, skeleton.dtsi provides
another section. Upon removal of skeleton.dtsi, the dtb fails to build
due to a duplicate node 'fixedregulator@0'. As both nodes were pretty
much the same 3.3V fixed regulator, it hasn't really mattered. Fix this
by renaming the nodes to something unique. In the process, drop the
unit-address which shouldn't be present wtihout reg property.
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
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cpu_is_mmp2() was equivalent to cpu_is_pj4(), wouldn't be correct for
multiplatform kernels. Fix it by also considering mmp_chip_id, as is
done for cpu_is_pxa168() and cpu_is_pxa910() above.
Moreover, it is only available with CONFIG_CPU_MMP2 and thus doesn't work
on DT-based MMP2 machines. Enable it on CONFIG_MACH_MMP2_DT too.
Note: CONFIG_CPU_MMP2 is only used for machines that use board files
instead of DT. It should perhaps be renamed. I'm not doing it now, because
I don't have a better idea.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: stable@vger.kernel.org
Signed-off-by: Olof Johansson <olof@lixom.net>
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The commit b1b8f45b3130 ("ARM: dts: bcm2837: Add missing GPIOs of Expander")
introduced a wifi power sequence. Unfortunately the polarity of the reset
GPIOs were wrong and broke the wifi support on Raspberry Pi 3 B and
later in 3 B+. This wasn't discovered before since the power sequence
takes only effect in case the relevant MMC driver is compiled as a module.
Fixes: b1b8f45b3130 ("ARM: dts: bcm2837: Add missing GPIOs of Expander")
Cc: stable@vger.kernel.org
Reported-by: Matthias Lueschner <lueschem@gmail.com>
Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=911443
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"Volume is a little higher than usual due to a set of gpio fixes for
Davinci platforms that's been around a while, still seemed appropriate
to not hold off until next merge window.
Besides that it's the usual mix of minor fixes, mostly corrections of
small stuff in device trees.
Major stability-related one is the removal of a regulator from DT on
Rock960, since DVFS caused undervoltage. I expect it'll be restored
once they figure out the underlying issue"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (28 commits)
MAINTAINERS: Remove unused Qualcomm SoC mailing list
ARM: davinci: dm644x: set the GPIO base to 0
ARM: davinci: da830: set the GPIO base to 0
ARM: davinci: dm355: set the GPIO base to 0
ARM: davinci: dm646x: set the GPIO base to 0
ARM: davinci: dm365: set the GPIO base to 0
ARM: davinci: da850: set the GPIO base to 0
gpio: davinci: restore a way to manually specify the GPIO base
ARM: davinci: dm644x: define gpio interrupts as separate resources
ARM: davinci: dm355: define gpio interrupts as separate resources
ARM: davinci: dm646x: define gpio interrupts as separate resources
ARM: davinci: dm365: define gpio interrupts as separate resources
ARM: davinci: da8xx: define gpio interrupts as separate resources
ARM: dts: at91: sama5d2: use the divided clock for SMC
ARM: dts: imx51-zii-rdu1: Remove EEPROM node
ARM: dts: rockchip: Remove @0 from the veyron memory node
arm64: dts: rockchip: Fix PCIe reset polarity for rk3399-puma-haikou.
arm64: dts: qcom: msm8998: Reserve gpio ranges on MTP
arm64: dts: sdm845-mtp: Reserve reserved gpios
arm64: dts: ti: k3-am654: Fix wakeup_uart reg address
...
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git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into fixes
i.MX fixes for 4.20, round 2:
- Reomve non-existing EEPROM device from imx51-zii-rdu1 board.
It was added by mistake.
* tag 'imx-fixes-4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: dts: imx51-zii-rdu1: Remove EEPROM node
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Few minor fixes for omaps for v4.20-rc cycle
This set of fixes contains minor regression fixes for LogicPD dts files
for MMC pinctrl and interrupts. There is also one section annotation fix
that shows up with Clang, and a fix for an unitialized field for omap1.
* tag 'omap-for-v4.20/fixes-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP1: ams-delta: Fix possible use of uninitialized field
ARM: dts: am3517-som: Fix WL127x Wifi interrupt
ARM: dts: logicpd-somlv: Fix interrupt on mmc3_dat1
ARM: dts: LogicPD Torpedo: Fix mmc3_dat1 interrupt
ARM: dts: am3517: Fix pinmuxing for CD on MMC1
ARM: OMAP2+: prm44xx: Fix section annotation on omap44xx_prm_enable_io_wakeup
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into fixes
DaVinci: fix GPIO breakage after v4.19
This set of changes is needed to fix the broken GPIO support
for DaVinci boards in legacy mode after certain changes made to the
GPIO driver in 4.19, namely: commits 587f7a694f01 ("gpio: davinci: Use
dev name for label and automatic base selection") and eb3744a2dd01
("gpio: davinci: Do not assume continuous IRQ numbering").
* tag 'davinci-fixes-for-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
ARM: davinci: dm644x: set the GPIO base to 0
ARM: davinci: da830: set the GPIO base to 0
ARM: davinci: dm355: set the GPIO base to 0
ARM: davinci: dm646x: set the GPIO base to 0
ARM: davinci: dm365: set the GPIO base to 0
ARM: davinci: da850: set the GPIO base to 0
gpio: davinci: restore a way to manually specify the GPIO base
ARM: davinci: dm644x: define gpio interrupts as separate resources
ARM: davinci: dm355: define gpio interrupts as separate resources
ARM: davinci: dm646x: define gpio interrupts as separate resources
ARM: davinci: dm365: define gpio interrupts as separate resources
ARM: davinci: da8xx: define gpio interrupts as separate resources
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into fixes
Moving the veyron memory node from memory@0 back to memory, as the
firmware on these devices as issues identifying the formally correct
node.
* tag 'v4.20-rockchip-dts32fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
ARM: dts: rockchip: Remove @0 from the veyron memory node
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux into fixes
AT91 fixes for 4.20
- Fix the SMC parent clock
* tag 'at91-4.20-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux:
ARM: dts: at91: sama5d2: use the divided clock for SMC
Signed-off-by: Olof Johansson <olof@lixom.net>
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The function_graph_enter() function does the work of calling the function
graph hook function and the management of the shadow stack, simplifying the
work done in the architecture dependent prepare_ftrace_return().
Have ARM use the new code, and remove the shadow stack management as well as
having to set up the trace structure.
This is needed to prepare for a fix of a design bug on how the curr_ret_stack
is used.
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org
Cc: stable@kernel.org
Fixes: 03274a3ffb449 ("tracing/fgraph: Adjust fgraph depth before calling trace return callback")
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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Commit 587f7a694f01 ("gpio: davinci: Use dev name for label and
automatic base selection") broke the GPIO support on DaVinci boards
in legacy mode by allowing gpiolib to set the GPIO base automatically.
DaVinci board files use the legacy GPIO API with hard-coded GPIO line
numbers. Use the new fields in struct davinci_gpio_platform_data to
manually set the GPIO base to 0.
Fixes: 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection")
Cc: stable@vger.kernel.org
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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Commit 587f7a694f01 ("gpio: davinci: Use dev name for label and
automatic base selection") broke the GPIO support on DaVinci boards
in legacy mode by allowing gpiolib to set the GPIO base automatically.
DaVinci board files use the legacy GPIO API with hard-coded GPIO line
numbers. Use the new fields in struct davinci_gpio_platform_data to
manually set the GPIO base to 0.
Fixes: 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection")
Cc: stable@vger.kernel.org
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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Commit 587f7a694f01 ("gpio: davinci: Use dev name for label and
automatic base selection") broke the GPIO support on DaVinci boards
in legacy mode by allowing gpiolib to set the GPIO base automatically.
DaVinci board files use the legacy GPIO API with hard-coded GPIO line
numbers. Use the new fields in struct davinci_gpio_platform_data to
manually set the GPIO base to 0.
Fixes: 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection")
Cc: stable@vger.kernel.org
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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Commit 587f7a694f01 ("gpio: davinci: Use dev name for label and
automatic base selection") broke the GPIO support on DaVinci boards
in legacy mode by allowing gpiolib to set the GPIO base automatically.
DaVinci board files use the legacy GPIO API with hard-coded GPIO line
numbers. Use the new fields in struct davinci_gpio_platform_data to
manually set the GPIO base to 0.
Fixes: 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection")
Cc: stable@vger.kernel.org
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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Commit 587f7a694f01 ("gpio: davinci: Use dev name for label and
automatic base selection") broke the GPIO support on DaVinci boards
in legacy mode by allowing gpiolib to set the GPIO base automatically.
DaVinci board files use the legacy GPIO API with hard-coded GPIO line
numbers. Use the new fields in struct davinci_gpio_platform_data to
manually set the GPIO base to 0.
Fixes: 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection")
Cc: stable@vger.kernel.org
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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Commit 587f7a694f01 ("gpio: davinci: Use dev name for label and
automatic base selection") broke the network support in legacy boot
mode for da850-evm since we can no longer request the MDIO clock GPIO.
We now have the option to specify the GPIO base manually for davinci,
so add the relevant fields to platform data.
Fixes: 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection")
Cc: stable@vger.kernel.org
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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Since commit eb3744a2dd01 ("gpio: davinci: Do not assume continuous
IRQ numbering") the davinci GPIO driver fails to probe if we boot
in legacy mode from any of the board files. Since the driver now
expects every interrupt to be defined as a separate resource, split
the definition of IRQ resources instead of having a single continuous
interrupt range.
Fixes: eb3744a2dd01 ("gpio: davinci: Do not assume continuous IRQ numbering")
Cc: stable@vger.kernel.org
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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Since commit eb3744a2dd01 ("gpio: davinci: Do not assume continuous
IRQ numbering") the davinci GPIO driver fails to probe if we boot
in legacy mode from any of the board files. Since the driver now
expects every interrupt to be defined as a separate resource, split
the definition of IRQ resources instead of having a single continuous
interrupt range.
Fixes: eb3744a2dd01 ("gpio: davinci: Do not assume continuous IRQ numbering")
Cc: stable@vger.kernel.org
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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Since commit eb3744a2dd01 ("gpio: davinci: Do not assume continuous
IRQ numbering") the davinci GPIO driver fails to probe if we boot
in legacy mode from any of the board files. Since the driver now
expects every interrupt to be defined as a separate resource, split
the definition of IRQ resources instead of having a single continuous
interrupt range.
Fixes: eb3744a2dd01 ("gpio: davinci: Do not assume continuous IRQ numbering")
Cc: stable@vger.kernel.org
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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Since commit eb3744a2dd01 ("gpio: davinci: Do not assume continuous
IRQ numbering") the davinci GPIO driver fails to probe if we boot
in legacy mode from any of the board files. Since the driver now
expects every interrupt to be defined as a separate resource, split
the definition of IRQ resources instead of having a single continuous
interrupt range.
Fixes: eb3744a2dd01 ("gpio: davinci: Do not assume continuous IRQ numbering")
Cc: stable@vger.kernel.org
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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