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We cannot preserve partial fields for hardware breakpoints, because
the values written by userspace to the hardware breakpoint
registers can't subsequently be recovered intact from the hardware.
So, just reject attempts to write incomplete fields with -EINVAL.
Cc: <stable@vger.kernel.org> # 3.7.x-
Fixes: 478fcb2cdb23 ("arm64: Debugging support")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <Will.Deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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This patch adds an explicit __reserved[] field to user_fpsimd_state
to replace what was previously unnamed padding.
This ensures that data in this region are propagated across
assignment rather than being left possibly uninitialised at the
destination.
Cc: <stable@vger.kernel.org> # 3.7.x-
Fixes: 60ffc30d5652 ("arm64: Exception handling")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <Will.Deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Ensure that if userspace supplies insufficient data to
PTRACE_SETREGSET to fill all the registers, the thread's old
registers are preserved.
Cc: <stable@vger.kernel.org> # 4.3.x-
Fixes: 5d220ff9420f ("arm64: Better native ptrace support for compat tasks")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <Will.Deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Ensure that if userspace supplies insufficient data to
PTRACE_SETREGSET to fill all the registers, the thread's old
registers are preserved.
Cc: <stable@vger.kernel.org> # 3.19.x-
Fixes: 766a85d7bc5d ("arm64: ptrace: add NT_ARM_SYSTEM_CALL regset")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <Will.Deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Ensure that if userspace supplies insufficient data to
PTRACE_SETREGSET to fill all the registers, the thread's old
registers are preserved.
Cc: <stable@vger.kernel.org> # 3.7.x-
Fixes: 478fcb2cdb23 ("arm64: Debugging support")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <Will.Deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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The arm64 __page_to_voff() macro takes a parameter called 'page', and
also refers to 'struct page'. Thus, if the value passed in is not
called 'page', we'll refer to the wrong struct name (which might not
exist).
Fixes: 3fa72fe9c614 ("arm64: mm: fix __page_to_voff definition")
Acked-by: Mark Rutland <mark.rutland@arm.com>
Suggested-by: Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>
Signed-off-by: Oleksandr Andrushchenko <Oleksandr_Andrushchenko@epam.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Commit b67a8b29df introduced logic to skip swiotlb allocation when all memory
is DMA accessible anyway.
While this is a great idea, __dma_alloc still calls swiotlb code unconditionally
to allocate memory when there is no CMA memory available. The swiotlb code is
called to ensure that we at least try get_free_pages().
Without initialization, swiotlb allocation code tries to access io_tlb_list
which is NULL. That results in a stack trace like this:
Unable to handle kernel NULL pointer dereference at virtual address 00000000
[...]
[<ffff00000845b908>] swiotlb_tbl_map_single+0xd0/0x2b0
[<ffff00000845be94>] swiotlb_alloc_coherent+0x10c/0x198
[<ffff000008099dc0>] __dma_alloc+0x68/0x1a8
[<ffff000000a1b410>] drm_gem_cma_create+0x98/0x108 [drm]
[<ffff000000abcaac>] drm_fbdev_cma_create_with_funcs+0xbc/0x368 [drm_kms_helper]
[<ffff000000abcd84>] drm_fbdev_cma_create+0x2c/0x40 [drm_kms_helper]
[<ffff000000abc040>] drm_fb_helper_initial_config+0x238/0x410 [drm_kms_helper]
[<ffff000000abce88>] drm_fbdev_cma_init_with_funcs+0x98/0x160 [drm_kms_helper]
[<ffff000000abcf90>] drm_fbdev_cma_init+0x40/0x58 [drm_kms_helper]
[<ffff000000b47980>] vc4_kms_load+0x90/0xf0 [vc4]
[<ffff000000b46a94>] vc4_drm_bind+0xec/0x168 [vc4]
[...]
Thankfully swiotlb code just learned how to not do allocations with the FORCE_NO
option. This patch configures the swiotlb code to use that if we decide not to
initialize the swiotlb framework.
Fixes: b67a8b29df ("arm64: mm: only initialize swiotlb when necessary")
Signed-off-by: Alexander Graf <agraf@suse.de>
CC: Jisheng Zhang <jszhang@marvell.com>
CC: Geert Uytterhoeven <geert+renesas@glider.be>
CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"We've been sitting on fixes for a while, and they keep trickling in at
a low rate. Nothing in here comes across as particularly scary or
noteworthy, for the most part it's a large collection of small DT
tweaks"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (24 commits)
ARM: dts: da850-evm: fix read access to SPI flash
ARM: dts: omap3: Fix Card Detect and Write Protect on Logic PD SOM-LV
ARM64: dts: meson-gxbb-odroidc2: Disable SCPI DVFS
ARM: dts: OMAP5 / DRA7: indicate that SATA port 0 is available.
ARM: dts: NSP: Fix DT ranges error
ARM: multi_v7_defconfig: set bcm47xx watchdog
ARM: multi_v7_defconfig: fix config typo
ARM: dts: dra72-evm-revc: fix typo in ethernet-phy node
soc: ti: wkup_m3_ipc: Fix error return code in wkup_m3_ipc_probe()
ARM: ux500: fix prcmu_is_cpu_in_wfi() calculation
ARM: dts: sunxi: Change node name for pwrseq pin on Olinuxino-lime2-emmc
ARM: dts: sun8i: Support DTB build for NanoPi M1
ARM: dts: sun6i: hummingbird: Enable display engine again
ARM: dts: sun6i: Disable display pipeline by default
ARM, ARM64: dts: drop "arm,amba-bus" in favor of "simple-bus" part 3
ARM: dts: imx6qdl-nitrogen6_som2: fix sgtl5000 pinctrl init
ARM: dts: imx6qdl-nitrogen6_max: fix sgtl5000 pinctrl init
ARM: OMAP1: DMA: Correct the number of logical channels
ARM: dts: am335x-icev2: Remove the duplicated pinmux setting
ARM: OMAP2+: Fix WL1283 Bluetooth Baud Rate
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Read access to the SPI flash are broken on da850-evm, i.e. the data
read is not what is actually programmed on the flash.
According to the datasheet for the M25P64 part present on the da850-evm,
if the SPI frequency is higher than 20MHz then the READ command is not
usable anymore and only the FAST_READ command can be used to read data.
This commit specifies in the DTS that we should use FAST_READ command
instead of the READ command.
Cc: stable@vger.kernel.org
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Fabien Parent <fparent@baylibre.com>
[nsekhar@ti.com: subject line adjustment]
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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
Fixes for omaps for v4.10-rc cycle. Mostly a DMA regression fix for
omap1, and then a handful of trivial fixes for boards and devices to
work:
- Fixes TI wilink bluetooth strange platform data baud rate
- Remove duplicate pinmux line for am335x-icev2
- Fix omap1 dma regression
- Fix uninitialized return value for wkup_m3_ipc_probe()
- Fix Ethernet PHY binding typo for dra72-evm
- Fix init for omap5 and dra7 sata ports
- Fix mmc card detect pin for Logic PD SOM-LV
* tag 'omap-for-v4.10/fixes-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: dts: omap3: Fix Card Detect and Write Protect on Logic PD SOM-LV
ARM: dts: OMAP5 / DRA7: indicate that SATA port 0 is available.
ARM: dts: dra72-evm-revc: fix typo in ethernet-phy node
soc: ti: wkup_m3_ipc: Fix error return code in wkup_m3_ipc_probe()
ARM: OMAP1: DMA: Correct the number of logical channels
ARM: dts: am335x-icev2: Remove the duplicated pinmux setting
ARM: OMAP2+: Fix WL1283 Bluetooth Baud Rate
Signed-off-by: Olof Johansson <olof@lixom.net>
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This fixes commit ab8dd3aed011 ("ARM: DTS: Add minimal Support for
Logic PD DM3730 SOM-LV") where the Card Detect and Write Protect
pins were improperly configured.
Fixes: ab8dd3aed011 ("ARM: DTS: Add minimal Support for
Logic PD DM3730 SOM-LV")
Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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AHCI provides the register PORTS_IMPL to let the software know which port
is supported. The register must be initialized by the bootloader. However
in some cases u-boot doesn't properly initialize this value (if it is not
compiled with SATA support for example or if the SATA initialization fails).
The DTS entry "ports-implemented" can be used to override the value in
PORTS_IMPL.
Without this patch the SATA will not work in the following two cases:
* if there has been a failure to initialize SATA in u-boot.
* if ahci_platform module has been removed and re-inserted. The reason is
that the content of PORTS_IMPL is lost after the module is removed.
I suspect that it's because the controller is reset by the hwmod.
Cc: <stable@vger.kernel.org> # v4.6+
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Acked-by: Roger Quadros <rogerq@ti.com>
[tony@atomide.com: updated comments with what goes wrong]
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Fix a typo in impedance setting for ethernet-phy@3
Fixes: b76db38cd8ae ("ARM: dts: dra72-evm-revc: add phy impedance settings")
Cc: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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OMAP1510, OMAP5910 and OMAP310 have only 9 logical channels.
OMAP1610, OMAP5912, OMAP1710, OMAP730, and OMAP850 have 16 logical channels
available.
The wired 17 for the lch_count must have been used to cover the 16 + 1
dedicated LCD channel, in reality we can only use 9 or 16 channels.
The d->chan_count is not used by the omap-dma stack, so we can skip the
setup. chan_count was configured to the number of logical channels and not
the actual number of physical channels anyways.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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There is no mmc sd card detect on am335x-ice board. But the spi0_cs1
pin being configured as mmcsd_cd. Removing it fixes the below warning
during boot:
pinctrl-single 44e10800.pinmux: pin 44e10960.0 already
requested by 48030000.spi; cannot claim for 48060000.mmc
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
[tony@atomide.com: tidied up commit message]
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Commit 485fa1261f78 ("ARM: OMAP2+: LogicPD Torpedo + Wireless: Add Bluetooth")
set the wrong baud rate for the UART. The Baud rate was 300,000 and it should
be 3,000,000 for WL1283.
Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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The current hardware is not able to run with all cores enabled at a
cluster frequency superior at 1536MHz.
But the currently shipped u-boot for the platform still reports an OPP
table with possible DVFS frequency up to 2GHz, and will not change since
the off-tree linux tree supports limiting the OPPs with a kernel parameter.
A recent u-boot change reports the boot-time DVFS around 100MHz and
the default performance cpufreq governor sets the maximum frequency.
Previous version of u-boot reported to be already at the max OPP and
left the OPP as is.
Nevertheless, other governors like ondemand could setup the max frequency
and make the system crash.
This patch disables the DVFS clock and disables cpufreq.
Fixes: 70db166a2baa ("ARM64: dts: meson-gxbb: Add SCPI with cpufreq & sensors Nodes")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into fixes
A single PM fix from Arnd
* tag 'ux500-fix-for-armsoc' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson:
ARM: ux500: fix prcmu_is_cpu_in_wfi() calculation
Signed-off-by: Olof Johansson <olof@lixom.net>
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This function clearly never worked and always returns true,
as pointed out by gcc-7:
arch/arm/mach-ux500/pm.c: In function 'prcmu_is_cpu_in_wfi':
arch/arm/mach-ux500/pm.c:137:212: error: ?:
using integer constants in boolean context, the expression
will always evaluate to 'true' [-Werror=int-in-bool-context]
With the added braces, the condition actually makes sense.
Fixes: 34fe6f107eab ("mfd : Check if the other db8500 core is in WFI")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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http://github.com/Broadcom/stblinux into fixes
This pull request contains Broadcom ARM-based SoC Device Tree fixes for v4.10, please
pull the following:
- Jon fixes an invalid value for the "ranges" property of the bus nodes on NorthStar
Plus SoCs
* tag 'arm-soc/for-4.10/devicetree-fixes' of http://github.com/Broadcom/stblinux:
ARM: dts: NSP: Fix DT ranges error
Signed-off-by: Olof Johansson <olof@lixom.net>
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The range size for axi is 0x2 bytes too small, as the QSPI needs
0x11c408 + 0x004 (which is 0x0011c40c, not 0x0011c40a). No errors have
been observed with this shortcoming, but fixing it for correctness.
Fixes: 329f98c1974e ("ARM: dts: NSP: Add QSPI nodes to NSPI and bcm958625k DTSes")
Signed-off-by: Jon Mason <jon.mason@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
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http://github.com/Broadcom/stblinux into fixes
This pull request contains fixes to multi_v7_defconfig for Broadcom ARM-based
SoCs, please pull the following changes:
- Valenting fixes two incorrect Kconfig symbols for BCM47xx: NVRAM and watchdog drivers
* tag 'arm-soc/for-4.10/defconfig-fixes' of http://github.com/Broadcom/stblinux:
ARM: multi_v7_defconfig: set bcm47xx watchdog
ARM: multi_v7_defconfig: fix config typo
Signed-off-by: Olof Johansson <olof@lixom.net>
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Correct the bcm47xx watchdog option. The convention of bcm watchdogs is
the _WDT suffix.
Fixes: 8dace3040426 ("ARM: multi_v7_defconfig: Enable BCM47xx/BCM5301x drivers")
Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
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s/CONFIG_CONFIG_BCM47XX_NVRAM/CONFIG_BCM47XX_NVRAM/
Fixes: 8dace3040426 ("ARM: multi_v7_defconfig: Enable BCM47xx/BCM5301x drivers")
Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into fixes
Samsung fixes for v4.10:
1. Update maintainers entry with Patchwork address.
2. Fix invalid values for NF_CT_PROTO_* in s3c2410 defconfig (these options
cannot be modules anymore).
* tag 'samsung-fixes-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
ARM: s3c2410_defconfig: Fix invalid values for NF_CT_PROTO_*
MAINTAINERS: Add Patchwork URL to Samsung Exynos entry
Signed-off-by: Olof Johansson <olof@lixom.net>
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NF_CT_PROTO_DCCP/SCTP/UDPLITE were switched from tristate to boolean so
defconfig needs to be adjusted to silence warnings:
warning: symbol value 'm' invalid for NF_CT_PROTO_DCCP
warning: symbol value 'm' invalid for NF_CT_PROTO_SCTP
warning: symbol value 'm' invalid for NF_CT_PROTO_UDPLITE
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
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https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into fixes
Allwinner fixes for 4.10
A few fixes here and there to enable the build of some DT leftover, prevent
display issues or setup a proper muxing.
* tag 'sunxi-fixes-for-4.10' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
ARM: dts: sunxi: Change node name for pwrseq pin on Olinuxino-lime2-emmc
ARM: dts: sun8i: Support DTB build for NanoPi M1
ARM: dts: sun6i: hummingbird: Enable display engine again
ARM: dts: sun6i: Disable display pipeline by default
Signed-off-by: Olof Johansson <olof@lixom.net>
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The node name for the power seq pin is mmc2@0 like the mmc2_pins_a one.
This makes the original node (mmc2_pins_a) scrapped out of the dtb and
result in a unusable eMMC if U-Boot didn't configured the pins to the
correct functions.
Signed-off-by: Emmanuel Vadot <manu@bidouilliste.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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The commit 10efbf5f1633 ("ARM: dts: sun8i: Add dts file for NanoPi M1 SBC")
introduced NanoPi M1 board but it's missing in Allwinner H3 DTB build.
Signed-off-by: Milo Kim <woogyom.kim@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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Now that we disable the display engine by default, we need to re-enable
it for the Hummingbird A31, which already had its display pipeline
enabled.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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While we now support the internal display pipeline found on sun6i, it
is possible that we are unable to enable the display for some boards,
due to a lack of drivers for the panels or bridges found on them. If
the display pipeline is enabled, the driver will try to enable, and
possibly screw up the simple framebuffer U-boot had configured.
Disable the display pipeline by default.
Fixes: 6d0e5b70be13 ("ARM: dts: sun6i: Add device nodes for first
display pipeline")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into fixes
i.MX fixes for 4.10, 2nd round:
- A couple of Nitrogen6 device tree fixes for audio codec probe
failure, which is caused by that pinctrl setting for codec clock
was not in the correct device node.
* tag 'imx-fixes-4.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: dts: imx6qdl-nitrogen6_som2: fix sgtl5000 pinctrl init
ARM: dts: imx6qdl-nitrogen6_max: fix sgtl5000 pinctrl init
Signed-off-by: Olof Johansson <olof@lixom.net>
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Since the codec is probed first, the pinctrl node should be
under the codec node.
The codec init was working for this board since U-Boot was
already setting GPIO_0 as CLKO1 but better fix it anyway.
Fixes: 3faa1bb2e89c ("ARM: dts: imx: add Boundary Devices Nitrogen6_SOM2 support")
Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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This patch fixes the following error:
sgtl5000 0-000a: Error reading chip id -6
imx-sgtl5000 sound: ASoC: CODEC DAI sgtl5000 not registered
imx-sgtl5000 sound: snd_soc_register_card failed (-517)
The problem was that the pinctrl group was linked to the sound driver
instead of the codec node. Since the codec is probed first, the sys_mclk
was missing and it would therefore fail to initialize.
Fixes: b32e700256bc ("ARM: dts: imx: add Boundary Devices Nitrogen6_Max board")
Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Tree-wide replacement was done by commit 2ef7d5f342c1 ("ARM, ARM64:
dts: drop "arm,amba-bus" in favor of "simple-bus"), then the 2nd
round by commit 15b7cc78f095 ("arm64: dts: drop "arm,amba-bus" in
favor of "simple-bus" part 2").
Here, some new users have appeared for Linux v4.10-rc1. Eliminate
them now.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
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into fixes
arm: Xilinx ZynqMP DT fixes for v4.10
- Fix dtc warnings
- Fix i2c compatible string
* tag 'zynmp-dt-fixes-for-4.10' of https://github.com/Xilinx/linux-xlnx:
ARM64: zynqmp: Fix i2c node's compatible string
ARM64: zynqmp: Fix W=1 dtc 1.4 warnings
Signed-off-by: Olof Johansson <olof@lixom.net>
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The Zynq Ultrascale MP uses version 1.4 of the Cadence IP core
which fixes some silicon bugs that needed software workarounds
in Version 1.0 that was used on Zynq systems.
Signed-off-by: Moritz Fischer <mdf@kernel.org>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Sören Brinkmann <soren.brinkmann@xilinx.com>
Cc: Rob Herring <robh+dt@kernel.org>
Acked-by: Sören Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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The patch removes these warnings reported by dtc 1.4:
Warning (unit_address_vs_reg): Node /amba_apu has a reg or ranges
property, but no unit name
Warning (unit_address_vs_reg): Node /memory has a reg or ranges
property, but no unit name
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
- recognize that a PCI-to-PCIe bridge originates a PCIe hierarchy, so
we enumerate that hierarchy correctly
- X-Gene: fix a change merged for v4.10 that broke MSI
- Keystone: avoid reading undefined registers, which can cause
asynchronous external aborts
- Supermicro X8DTH-i/6/iF/6F: ignore broken _CRS that caused us to
change (and break) existing I/O port assignments
* tag 'pci-v4.10-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI/MSI: pci-xgene-msi: Fix CPU hotplug registration handling
PCI: Enumerate switches below PCI-to-PCIe bridges
x86/PCI: Ignore _CRS on Supermicro X8DTH-i/6/iF/6F
PCI: designware: Check for iATU unroll only on platforms that use ATU
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Martin reported that the Supermicro X8DTH-i/6/iF/6F advertises incorrect
host bridge windows via _CRS:
pci_root PNP0A08:00: host bridge window [io 0xf000-0xffff]
pci_root PNP0A08:01: host bridge window [io 0xf000-0xffff]
Both bridges advertise the 0xf000-0xffff window, which cannot be correct.
Work around this by ignoring _CRS on this system. The downside is that we
may not assign resources correctly to hot-added PCI devices (if they are
possible on this system).
Link: https://bugzilla.kernel.org/show_bug.cgi?id=42606
Reported-by: Martin Burnicki <martin.burnicki@meinberg.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull two s390 bug fixes from Martin Schwidefsky:
"Two changes, the first is a fix to add a missing memory clobber to the
inline assembly to load control registers. This has not caused any
issues so far, but who knows what code gcc will generate in future
versions.
The second change is an update for the default configurations. This
includes CONFIG_BUG_ON_DATA_CORRUPTION=y, we want this to be enabled
for s390. The usual approach to debug problems on production systems
is to use crash on a system dump and for us avoiding data corruptions
is priority one"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390: update defconfigs
s390/ctl_reg: make __ctl_load a full memory barrier
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Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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We have quite a lot of code that depends on the order of the
__ctl_load inline assemby and subsequent memory accesses, like
e.g. disabling lowcore protection and the writing to lowcore.
Since the __ctl_load macro does not have memory barrier semantics, nor
any other dependencies the compiler is, theoretically, free to shuffle
code around. Or in other words: storing to lowcore could happen before
lowcore protection is disabled.
In order to avoid this class of potential bugs simply add a full
memory barrier to the __ctl_load macro.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Pull ARM fixes from Russell King:
"A few ARM fixes:
- fix a crash while performing TLB maintanence on early ARM SMP cores
- blacklist Scorpion CPUs for hardware breakpoints
- ARMs asm/types.h has been included as part of the UAPI due to the
way the makefiles work, move it to uapi/asm/types.h to make it
official
- fix up ftrace syscall name matching"
* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 8613/1: Fix the uaccess crash on PB11MPCore
MAINTAINERS: update rmk's entries
ARM: put types.h in uapi
ARM: 8634/1: hw_breakpoint: blacklist Scorpion CPUs
ARM: 8632/1: ftrace: fix syscall name matching
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The following patch was sketched by Russell in response to my
crashes on the PB11MPCore after the patch for software-based
priviledged no access support for ARMv8.1. See this thread:
http://marc.info/?l=linux-arm-kernel&m=144051749807214&w=2
I am unsure what is going on, I suspect everyone involved in
the discussion is. I just want to repost this to get the
discussion restarted, as I still have to apply this patch
with every kernel iteration to get my PB11MPCore Realview
running.
Testing by Neil Armstrong on the Oxnas NAS has revealed that
this bug exist also on that widely deployed hardware, so
we are probably currently regressing all ARM11MPCore systems.
Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will.deacon@arm.com>
Fixes: a5e090acbf54 ("ARM: software-based priviledged-no-access support")
Tested-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Due to the way kbuild works, this header was unintentionally exported
back in 2013 when it was created, despite it not being in a uapi/
directory. This is very non-intuitive behaviour by Kbuild.
However, we've had this include exported to userland for almost four
years, and searching google for "ARM types.h __UINTPTR_TYPE__" gives
no hint that anyone has complained about it. So, let's make it
officially exported in this state.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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On APQ8060, the kernel crashes in arch_hw_breakpoint_init, taking an
undefined instruction trap within write_wb_reg. This is because Scorpion
CPUs erroneously appear to set DBGPRSR.SPD when WFI is issued, even if
the core is not powered down. When DBGPRSR.SPD is set, breakpoint and
watchpoint registers are treated as undefined.
It's possible to trigger similar crashes later on from userspace, by
requesting the kernel to install a breakpoint or watchpoint, as we can
go idle at any point between the reset of the debug registers and their
later use. This has always been the case.
Given that this has always been broken, no-one has complained until now,
and there is no clear workaround, disable hardware breakpoints and
watchpoints on Scorpion to avoid these issues.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reported-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: stable@vger.kernel.org
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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ARM has a few system calls (most notably mmap) for which the names of
the functions which are referenced in the syscall table do not match the
names of the syscall tracepoints. As a consequence of this, these
tracepoints are not made available. Implement
arch_syscall_match_sym_name to fix this and allow tracing even these
system calls.
Signed-off-by: Rabin Vincent <rabinv@axis.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull SMP hotplug update from Thomas Gleixner:
"This contains a trivial typo fix and an extension to the core code for
dynamically allocating states in the prepare stage.
The extension is necessary right now because we need a proper way to
unbreak LTTNG, which iscurrently non functional due to the removal of
the notifiers. Surely it's out of tree, but it's widely used by
distros.
The simple solution would have been to reserve a state for LTTNG, but
I'm not fond about unused crap in the kernel and the dynamic range,
which we admittedly should have done right away, allows us to remove
quite some of the hardcoded states, i.e. those which have no ordering
requirements. So doing the right thing now is better than having an
smaller intermediate solution which needs to be reworked anyway"
* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
cpu/hotplug: Provide dynamic range for prepare stage
perf/x86/amd/ibs: Fix typo after cleanup state names in cpu/hotplug
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Fix a small typo after cleanup state names in cpu/hotplug.
The new convention is 'subsys/xxx/yyy:state' where "state" here is called
"starting" not "STARTING".
Fixes: 73c1b41e63f0 ("cpu/hotplug: Cleanup state names")
Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Link: http://lkml.kernel.org/r/20161226100511.8662-1-sedat.dilek@gmail.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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