Commit graph

1,105,074 commits

Author SHA1 Message Date
Hans de Goede
5c8e4c8662 platform/x86: x86-android-tablets: Add battery swnode support
power_supply_get_battery_info() which is used by charger and fuel-gauge
drivers on x86-android-tablets, expects the battery properties to be
described in a stand-alone battery fwnode which is then referenced
from both the charger and fuel-gauge device's fwnodes.

Add support for registering + unregistering a swnode for this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220205191356.225505-1-hdegoede@redhat.com
2022-02-11 10:46:07 +01:00
Ard Biesheuvel
a69cb445f7 crypto: arm/xor - make vectorized C code Clang-friendly
The ARM version of the accelerated XOR routines are simply the 8-way C
routines passed through the auto-vectorizer with SIMD codegen enabled.
This used to require GCC version 4.6 at least, but given that 5.1 is now
the baseline, this check is no longer necessary, and actually
misidentifies Clang as GCC < 4.6 as Clang defines the GCC major/minor as
well, but makes no attempt at doing this in a way that conveys feature
parity with a certain version of GCC (which would not be a great idea in
the first place).

So let's drop the version check, and make the auto-vectorize pragma
(which is based on a GCC-specific command line option) GCC-only. Since
Clang performs SIMD auto-vectorization by default at -O2, no pragma is
necessary here.

Tested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://github.com/ClangBuiltLinux/linux/issues/496
Link: https://github.com/ClangBuiltLinux/linux/issues/503
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-02-11 20:39:39 +11:00
Ard Biesheuvel
297565aa22 lib/xor: make xor prototypes more friendly to compiler vectorization
Modern compilers are perfectly capable of extracting parallelism from
the XOR routines, provided that the prototypes reflect the nature of the
input accurately, in particular, the fact that the input vectors are
expected not to overlap. This is not documented explicitly, but is
implied by the interchangeability of the various C routines, some of
which use temporary variables while others don't: this means that these
routines only behave identically for non-overlapping inputs.

So let's decorate these input vectors with the __restrict modifier,
which informs the compiler that there is no overlap. While at it, make
the input-only vectors pointer-to-const as well.

Tested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://github.com/ClangBuiltLinux/linux/issues/563
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-02-11 20:39:39 +11:00
Tudor Ambarus
e8bf24bd43 crypto: atmel-tdes - Add support for the TDES IP available on sama7g5 SoC
Add support for the TDES IP found on sama7g5.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-02-11 20:39:38 +11:00
zhaoxiao
4f37ea5d0e video: fbdev: s3c-fb: Use platform_get_irq() to get the interrupt
platform_get_resource(pdev, IORESOURCE_IRQ, ..) relies on static
allocation of IRQ resources in DT core code, this causes an issue
when using hierarchical interrupt domains using "interrupts" property
in the node as this bypassed the hierarchical setup and messed up the
irq chaining.

In preparation for removal of static setup of IRQ resource from DT core
code use platform_get_irq().

Signed-off-by: zhaoxiao <zhaoxiao@uniontech.com>
Signed-off-by: Helge Deller <deller@gmx.de>
2022-02-11 10:39:13 +01:00
Jani Nikula
420f63cb6d drm/i915/mst: update slot information for 128b/132b
128b/132b supports using 64 slots starting from 0, while 8b/10b reserves
slot 0 for metadata.

Commit d6c6a76f80 ("drm: Update MST First Link Slot Information Based
on Encoding Format") added support for updating the topology state
accordingly, and commit 41724ea273 ("drm/amd/display: Add DP 2.0 MST
DM Support") started using it in the amd driver.

This feels more than a little cumbersome, especially updating the
information in atomic check. For i915, add the update to MST connector
.compute_config hook rather than iterating over all MST managers and
connectors in global mode config .atomic_check. Fingers crossed.

v3:
- Propagate errors from intel_dp_mst_update_slots() (Ville)

v2:
- Update in .compute_config() not .atomic_check (Ville)

Cc: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Cc: Lyude Paul <lyude@redhat.com>
Cc: Uma Shankar <uma.shankar@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220208152317.3019070-1-jani.nikula@intel.com
2022-02-11 11:35:37 +02:00
Jani Nikula
3ee7fab0f3 drm/i915/dp: add 128b/132b support to link status checks
Abstract link status check to a function that takes 128b/132b and 8b/10b
into account, and use it. Also dump link status on failures.

Cc: Uma Shankar <uma.shankar@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/cec395d435679a290a1c35fcbfc54555101bfad1.1643878928.git.jani.nikula@intel.com
2022-02-11 11:35:37 +02:00
Jani Nikula
a421d8a992 drm/i915/dp: rewrite DP 2.0 128b/132b link training based on errata
The DP 2.0 errata completely overhauls the 128b/132b link training, with
no provisions for backward compatibility with the original DP 2.0
specification.

The changes are too intrusive to consider reusing the same code for both
8b/10b and 128b/132b, mainly because the LTTPR channel equalisation is
done concurrently instead of serialized.

NOTES:

* It's a bit unclear when to wait for DP_INTERLANE_ALIGN_DONE and
  per-lane DP_LANE_SYMBOL_LOCKED. Figure xx4 in the SCR implies the
  LANEx_CHANNEL_EQ_DONE sequence may end with either 0x77,0x77,0x85 *or*
  0x33,0x33,0x84 (for four lane configuration in DPCD 0x202..0x204)
  i.e. without the above bits set. Text elsewhere seems contradictory or
  incomplete.

* We read entire link status (6 bytes) everywhere instead of individual
  DPCD addresses.

* There are some subtle ambiguities or contradictions in the order of
  some DPCD access and TPS signal enables/disables. It's also not clear
  whether these are significant.

v4:
- Wait for intra-hop clear after link training end (Ville)
- Wait instead of single check for intra-hop clear before link train

v3:
- Use msecs_to_jiffies_timeout() (Ville)
- Read status at the beginning of interlane align done loop (Ville)
- Try to simplify timeout flag use where possible (Ville)

v2:
- Always try one last time after timeouts to avoid races (Ville)
- Extend timeout to cover the entire LANEx_EQ_DONE sequence (Ville)
- Also check for eq interlane align done in LANEx_CDS_DONE Sequence (Ville)
- Check for Intra-hop status before link training

Cc: Uma Shankar <uma.shankar@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220208143209.2997337-1-jani.nikula@intel.com
2022-02-11 11:35:37 +02:00
Jani Nikula
92e438619d drm/i915/dp: move intel_dp_prepare_link_train() call
Call it from the higher level function, as it will be shared between two
code paths.

Cc: Uma Shankar <uma.shankar@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/c0fffbf7213c09e42be9875d38d3001e0026b063.1643878928.git.jani.nikula@intel.com
2022-02-11 11:35:37 +02:00
Jani Nikula
427153ef63 drm/dp: add some new DPCD macros from DP 2.0 E11
Add some of the new additions from DP 2.0 E11.

Cc: Uma Shankar <uma.shankar@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/ec9c1b94858de36b9f4ef6c197effa4ca667afc3.1643878928.git.jani.nikula@intel.com
2022-02-11 11:35:37 +02:00
Jani Nikula
0192c25c03 drm/dp: add 128b/132b link status helpers from DP 2.0 E11
The DP 2.0 errata redefines link training. There are some new status
bits, and some of the old ones need to be checked independently. Add
helpers to do this.

Cc: Uma Shankar <uma.shankar@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/5a46260d1f171fed46d0ab8fe4b6499abd65ce24.1643878928.git.jani.nikula@intel.com
2022-02-11 11:35:37 +02:00
Jani Nikula
0f4b58423f drm/dp: add drm_dp_128b132b_read_aux_rd_interval()
The DP 2.0 errata changes DP_128B132B_TRAINING_AUX_RD_INTERVAL (DPCD
0x2216) completely. Add a new function to read that. Follow-up will need
to clean up existing functions.

v2: fix reversed interpretation of bit 7 meaning (Uma)

Cc: Uma Shankar <uma.shankar@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/22f6637194c9edb22b6a84be82dd385550dbb958.1643878928.git.jani.nikula@intel.com
2022-02-11 11:35:37 +02:00
Stephan Müller
37f36e5717 crypto: hmac - disallow keys < 112 bits in FIPS mode
FIPS 140 requires a minimum security strength of 112 bits. This implies
that the HMAC key must not be smaller than 112 in FIPS mode.

This restriction implies that the test vectors for HMAC that have a key
that is smaller than 112 bits must be disabled when FIPS support is
compiled.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-02-11 20:22:01 +11:00
Stephan Müller
c9c28ed0ab crypto: hmac - add fips_skip support
By adding the support for the flag fips_skip, hash / HMAC test vectors
may be marked to be not applicable in FIPS mode. Such vectors are
silently skipped in FIPS mode.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-02-11 20:22:01 +11:00
Christian Borntraeger
bfced9f963 KVM: s390: MAINTAINERS: promote Claudio Imbrenda
Claudio has volunteered to be more involved in the maintainership of
s390 KVM.

Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Acked-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Acked-by: Janosch Frank <frankja@linux.ibm.com>
Link: https://lore.kernel.org/r/20220210085310.26388-1-borntraeger@linux.ibm.com
2022-02-11 09:55:53 +01:00
Ville Syrjälä
f7bc440bc7 drm/i915/fbc: Fix the plane end Y offset check
We lost the required >>16 when I refactored the FBC plane state
checks. Bring it back so the check does what it's supposed to.

Cc: Mika Kahola <mika.kahola@intel.com>
Fixes: 2e6c99f886 ("drm/i915/fbc: Nuke lots of crap from intel_fbc_state_cache")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220210103107.24492-1-ville.syrjala@linux.intel.com
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
2022-02-11 10:48:46 +02:00
Marcel Ziswiler
cf3f722be6 arm64: defconfig: enable verdin-imx8mm relevant drivers as modules
Enable various drivers which support peripherals as found on the
Verdin iMX8M Mini et al. computer/system on modules:

- CONFIG_CAN_MCP251XFD
At least one Microchip MCP2518FDT SPI CAN controller which this driver
also supports may be found on the Verdin iMX8M Mini computer/system on
module.

- CONFIG_BT_HCIUART_MRVL, CONFIG_BT_MRVL, CONFIG_BT_MRVL_SDIO and
  CONFIG_MWIFIEX_SDIO
The AzureWave AW-CM276NF which these Bluetooth and Wi-Fi drivers also
support may be found on the Verdin iMX8M Mini (as well as the Apalis
iMX8, Colibri iMX8X and Verdin iMX8M Plus for that matter) computer/
system on module.

- CONFIG_SENSORS_LM75
The TI TMP75C temperature sensor which this driver also supports may be
found on the Verdin iMX8M Mini (as well as the Verdin iMX8M Plus for
that matter) computer/system on module.

- CONFIG_SND_SOC_NAU8822
The Nuvoton Technology Corporation (NTC) NAU88C22YG which this driver
also supports may be found on the Verdin Development Board a carrier
board for the Verdin family of computer/system on module which the
Verdin iMX8M Mini (as well as the Verdin iMX8M Plus for that matter)
may be mated in.

- CONFIG_TI_ADS1015
The TLA2024 ADC which this driver also supports may be found on the
Verdin iMX8M Mini (as well as the Verdin iMX8M Plus for that matter)
computer/system on module.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-02-11 16:47:25 +08:00
Marcel Ziswiler
ca5a503017 arm64: defconfig: build r8169 as a module
Build Realtek Gigabit Ethernet driver as a module.

Network cards based on chipsets this driver supports are ubiquitous both
in regular PCIe as well as mini-PCIe and nowadays even various M.2
formats. It is therefore a suitable card to be used for any kind of PCIe
and/or Gigabit Ethernet testing. As it is not designed in, just enabling
it as a module seems most suitable.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-02-11 16:47:22 +08:00
Marcel Ziswiler
e95622289f arm64: defconfig: build imx-sdma as a module
This avoids firmware load error and sysfs fallback reported as follows:

[    0.199448] imx-sdma 302c0000.dma-controller: Direct firmware load
 for imx/sdma/sdma-imx7d.bin failed with error -2
[    0.199487] imx-sdma 302c0000.dma-controller: Falling back to sysfs
 fallback for: imx/sdma/sdma-imx7d.bin

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-02-11 16:47:19 +08:00
Marcel Ziswiler
547950e571 arm64: defconfig: enable imx8m pcie phy driver
This enables the i.MX 8M PCIe PHY driver (CONFIG_PHY_FSL_IMX8M_PCIE)
required for PCIe functionality.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-02-11 16:47:16 +08:00
Marcel Ziswiler
5cf36c315f arm64: defconfig: enable bpf/cgroup firewalling
This avoids the following systemd warning:

[    2.618538] systemd[1]: system-getty.slice: unit configures an IP
 firewall, but the local system does not support BPF/cgroup firewalling.
[    2.630916] systemd[1]: (This warning is only shown for the first
 unit using IP firewalling.)

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Acked-by: Song Liu <songliubraving@fb.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-02-11 16:47:07 +08:00
Marcel Ziswiler
dde8cd786e arm64: defconfig: rebuild default configuration
Run "make defconfig; make savedefconfig" to rebuild defconfig.

This dropped the following configuration options which are nowaday's
already enabled (resp. disabled) by default:

CONFIG_MEMCG_SWAP=y
CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y
CONFIG_FSL_MC_BUS=y
CONFIG_QCOM_SCM=y
CONFIG_MFD_CROS_EC_DEV=y
CONFIG_MEDIA_CONTROLLER=y
CONFIG_VIDEO_V4L2_SUBDEV_API=y
CONFIG_DRM_DISPLAY_CONNECTOR=m
CONFIG_SND_SOC_FSL_SAI=m
CONFIG_USB_CONN_GPIO=m
CONFIG_USB_XHCI_PCI=m
CONFIG_SDM_GCC_845=y
CONFIG_SM_DISPCC_8250=y
CONFIG_SM_GCC_8150=y
CONFIG_SM_GCC_8250=y
CONFIG_COMMON_CLK_ZYNQMP=y

CONFIG_POWER_AVS was renamed to POWER_AVS_OMAP in commit bca815d620
("PM: AVS: smartreflex Move driver to soc specific drivers"). As there
are no 64-bit Arm OMAPs it getting dropped seems fair.

Note that the following user-selectable configuration options have been
preserved:

CONFIG_SECCOMP=y
CONFIG_SLIMBUS=m
CONFIG_INTERCONNECT=y
CONFIG_CONFIGFS_FS=y

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-02-11 16:47:02 +08:00
Marcel Ziswiler
6e3807935e arm64: defconfig: re-order default configuration
Use "make defconfig", "make savedefconfig" and friends to just assess
re-ordering of configuration items in defconfig.

This re-ordered the following configuration options:

CONFIG_BPF_JIT=y
CONFIG_SECCOMP=y
CONFIG_ARM_SCMI_PROTOCOL=y
CONFIG_ARM_SCPI_PROTOCOL=y
CONFIG_RASPBERRYPI_FIRMWARE=y
CONFIG_INTEL_STRATIX10_SERVICE=y
CONFIG_INTEL_STRATIX10_RSU=m
CONFIG_QCOM_SCM=y
CONFIG_EFI_CAPSULE_LOADER=y
CONFIG_IMX_SCU=y
CONFIG_IMX_SCU_PD=y
CONFIG_CAN_FLEXCAN=m
CONFIG_PCIE_LAYERSCAPE_GEN4=y
CONFIG_FSL_MC_BUS=y
CONFIG_MTK_DEVAPC=m
CONFIG_SPI_CADENCE_QUADSPI=y
CONFIG_MDIO_BUS_MUX_MMIOREG=y
CONFIG_MDIO_BUS_MUX_MULTIPLEXER=y
CONFIG_MESON_GXL_PHY=m
CONFIG_PINCTRL_SINGLE=y
CONFIG_QCOM_CPR=y
CONFIG_ROCKCHIP_IODOMAIN=y
CONFIG_SENSORS_ARM_SCMI=y
CONFIG_QORIQ_THERMAL=m
CONFIG_SUN8I_THERMAL=y
CONFIG_TEGRA_BPMP_THERMAL=m
CONFIG_ARM_SMC_WATCHDOG=y
CONFIG_MFD_CROS_EC_DEV=y
CONFIG_MEDIA_PLATFORM_SUPPORT=y
CONFIG_VIDEO_QCOM_CAMSS=m
CONFIG_DRM_PANEL_BOE_TV101WUM_NL6=m
CONFIG_DRM_NWL_MIPI_DSI=m
CONFIG_DRM_LONTIUM_LT9611UXC=m
CONFIG_SND_SOC_FSL_SAI=m
CONFIG_SND_SOC_IMX_AUDMIX=m
CONFIG_TYPEC_HD3SS3220=m
CONFIG_COMMON_CLK_SCMI=y
CONFIG_COMMON_CLK_ZYNQMP=y
CONFIG_IPQ_GCC_8074=y
CONFIG_SM_DISPCC_8250=y
CONFIG_QCOM_WCNSS_CTRL=m
CONFIG_ARCH_R8A774A1=y
CONFIG_ARCH_R8A774B1=y
CONFIG_ARCH_R8A774C0=y
CONFIG_ARCH_R8A774E1=y
CONFIG_ARCH_R8A77995=y
CONFIG_ARCH_R8A77990=y
CONFIG_ARCH_R8A77965=y
CONFIG_ARCH_R8A77970=y
CONFIG_ARCH_R8A779F0=y
CONFIG_HISI_PMU=y
CONFIG_QCOM_QFPROM=y
CONFIG_MUX_MMIO=y

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-02-11 16:46:38 +08:00
Marcel Ziswiler
34d9d2c9dc arm64: defconfig: enable pcieaer configuration
Enable CONFIG_PCIEAER which is required for CONFIG_ACPI_APEI_PCIEAER.
Commit 8c8ff55b4d ("PCI/AER: Don't select CONFIG_PCIEAER by default")
changed it to no longer being enabled by default.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-02-11 16:46:35 +08:00
Marcel Ziswiler
10fb2ac13b arm64: defconfig: enable taskstats configuration
Enable CONFIG_TASKSTATS which is required for CONFIG_TASK_XACCT (and
subsequently CONFIG_TASK_IO_ACCOUNTING). Previously, taskstats got
pulled in by KVM but that got changed in commit 63b3f96e1a
("kvm: Select SCHED_INFO instead of TASK_DELAY_ACCT").

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-02-11 16:46:19 +08:00
Waiman Long
ddc204b517
copy_process(): Move fd_install() out of sighand->siglock critical section
I was made aware of the following lockdep splat:

[ 2516.308763] =====================================================
[ 2516.309085] WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected
[ 2516.309433] 5.14.0-51.el9.aarch64+debug #1 Not tainted
[ 2516.309703] -----------------------------------------------------
[ 2516.310149] stress-ng/153663 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
[ 2516.310512] ffff0000e422b198 (&newf->file_lock){+.+.}-{2:2}, at: fd_install+0x368/0x4f0
[ 2516.310944]
               and this task is already holding:
[ 2516.311248] ffff0000c08140d8 (&sighand->siglock){-.-.}-{2:2}, at: copy_process+0x1e2c/0x3e80
[ 2516.311804] which would create a new lock dependency:
[ 2516.312066]  (&sighand->siglock){-.-.}-{2:2} -> (&newf->file_lock){+.+.}-{2:2}
[ 2516.312446]
               but this new dependency connects a HARDIRQ-irq-safe lock:
[ 2516.312983]  (&sighand->siglock){-.-.}-{2:2}
   :
[ 2516.330700]  Possible interrupt unsafe locking scenario:

[ 2516.331075]        CPU0                    CPU1
[ 2516.331328]        ----                    ----
[ 2516.331580]   lock(&newf->file_lock);
[ 2516.331790]                                local_irq_disable();
[ 2516.332231]                                lock(&sighand->siglock);
[ 2516.332579]                                lock(&newf->file_lock);
[ 2516.332922]   <Interrupt>
[ 2516.333069]     lock(&sighand->siglock);
[ 2516.333291]
                *** DEADLOCK ***
[ 2516.389845]
               stack backtrace:
[ 2516.390101] CPU: 3 PID: 153663 Comm: stress-ng Kdump: loaded Not tainted 5.14.0-51.el9.aarch64+debug #1
[ 2516.390756] Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015
[ 2516.391155] Call trace:
[ 2516.391302]  dump_backtrace+0x0/0x3e0
[ 2516.391518]  show_stack+0x24/0x30
[ 2516.391717]  dump_stack_lvl+0x9c/0xd8
[ 2516.391938]  dump_stack+0x1c/0x38
[ 2516.392247]  print_bad_irq_dependency+0x620/0x710
[ 2516.392525]  check_irq_usage+0x4fc/0x86c
[ 2516.392756]  check_prev_add+0x180/0x1d90
[ 2516.392988]  validate_chain+0x8e0/0xee0
[ 2516.393215]  __lock_acquire+0x97c/0x1e40
[ 2516.393449]  lock_acquire.part.0+0x240/0x570
[ 2516.393814]  lock_acquire+0x90/0xb4
[ 2516.394021]  _raw_spin_lock+0xe8/0x154
[ 2516.394244]  fd_install+0x368/0x4f0
[ 2516.394451]  copy_process+0x1f5c/0x3e80
[ 2516.394678]  kernel_clone+0x134/0x660
[ 2516.394895]  __do_sys_clone3+0x130/0x1f4
[ 2516.395128]  __arm64_sys_clone3+0x5c/0x7c
[ 2516.395478]  invoke_syscall.constprop.0+0x78/0x1f0
[ 2516.395762]  el0_svc_common.constprop.0+0x22c/0x2c4
[ 2516.396050]  do_el0_svc+0xb0/0x10c
[ 2516.396252]  el0_svc+0x24/0x34
[ 2516.396436]  el0t_64_sync_handler+0xa4/0x12c
[ 2516.396688]  el0t_64_sync+0x198/0x19c
[ 2517.491197] NET: Registered PF_ATMPVC protocol family
[ 2517.491524] NET: Registered PF_ATMSVC protocol family
[ 2591.991877] sched: RT throttling activated

One way to solve this problem is to move the fd_install() call out of
the sighand->siglock critical section.

Before commit 6fd2fe494b ("copy_process(): don't use ksys_close()
on cleanups"), the pidfd installation was done without holding both
the task_list lock and the sighand->siglock. Obviously, holding these
two locks are not really needed to protect the fd_install() call.
So move the fd_install() call down to after the releases of both locks.

Link: https://lore.kernel.org/r/20220208163912.1084752-1-longman@redhat.com
Fixes: 6fd2fe494b ("copy_process(): don't use ksys_close() on cleanups")
Reviewed-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
2022-02-11 09:28:32 +01:00
Christian Brauner
97acd70118
MAINTAINERS: add entry for idmapped mounts
I'd like to continue maintaining the work that was done around idmapped,
make sure that I'm Cced on new patches and work that impacts the
infrastructure.

Link: https://lore.kernel.org/r/20220203131411.3093040-3-brauner@kernel.org
Cc: Seth Forshee <seth.forshee@digitalocean.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christian Brauner <brauner@kernel.org>
2022-02-11 09:08:24 +01:00
Christian Brauner
d1c56bfdac
tests: fix idmapped mount_setattr test
The test treated zero as a successful run when it really should treat
non-zero as a successful run. A mount's idmapping can't change once it
has been attached to the filesystem.

Link: https://lore.kernel.org/r/20220203131411.3093040-2-brauner@kernel.org
Fixes: 01eadc8dd9 ("tests: add mount_setattr() selftests")
Cc: Seth Forshee <seth.forshee@digitalocean.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: linux-fsdevel@vger.kernel.org
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christian Brauner <brauner@kernel.org>
2022-02-11 09:08:20 +01:00
Jani Nikula
a391e06958 drm/i915/opregion: debug log about Mailbox #2 for backlight
Start debug logging about the presence of the new Mailbox #2 for
backlight. Actual support is to be added later.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/42fd9cd777c5cc9a8d48db9dd8306924c735918e.1644489329.git.jani.nikula@intel.com
2022-02-11 09:54:46 +02:00
Jani Nikula
6989817182 drm/i915/opregion: handle SWSCI Mailbox #2 obsoletion
Opregion Mailbox #2 is obsolete for SWSCI usage in opregion v2.x, and
repurposed in opregion v3.x. Warn about obsole mailbox presence in v2.x,
and ignore with an error for v3.x.

v2: Demote drm_warn() to drm_dbg() on opregion v2.x

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220210161603.647254-1-jani.nikula@intel.com
2022-02-11 09:54:42 +02:00
Jani Nikula
66b09ddd8b drm/i915/opregion: early exit from encoder notify if SWSCI isn't there
Newer platforms aren't supposed to have mailbox #2 or SWSCI
support. Bail out early from encoder notify if that is the case,
skipping the out-of-bounds checks and debug messages.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/82f63313057ed2d96856b3f8d76536826a897bc7.1644489329.git.jani.nikula@intel.com
2022-02-11 09:54:38 +02:00
Jani Nikula
73144c0ce4 drm/i915/opregion: abstract the check for valid swsci function
Add a reusable function for checking the SWSCI function.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/778f8716ec44adad3cf95a7bb327a7c8e981291d.1644489329.git.jani.nikula@intel.com
2022-02-11 09:54:30 +02:00
Jani Nikula
24a644ebbf drm/i915/opregion: check port number bounds for SWSCI display power state
The mapping from enum port to whatever port numbering scheme is used by
the SWSCI Display Power State Notification is odd, and the memory of it
has faded. In any case, the parameter only has space for ports numbered
[0..4], and UBSAN reports bit shift beyond it when the platform has port
F or more.

Since the SWSCI functionality is supposed to be obsolete for new
platforms (i.e. ones that might have port F or more), just bail out
early if the mapped and mangled port number is beyond what the Display
Power State Notification can support.

Fixes: 9c4b0a6831 ("drm/i915: add opregion function to notify bios of encoder enable/disable")
Cc: <stable@vger.kernel.org> # v3.13+
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/4800
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/cc363f42d6b5a5932b6d218fefcc8bdfb15dbbe5.1644489329.git.jani.nikula@intel.com
2022-02-11 09:54:11 +02:00
Pierre-Louis Bossart
63fadaa2c7 soundwire: stream: make enable/disable/deprepare idempotent
The stream management currently flags an 'inconsistent state' error
when a change is requested multiple times. This was added on purpose
to identify programming mistakes.

In hindsight, there was no real reason to fail if the logic at the
ASoC-DPCM level invokes the same callback multiple times. It's
perfectly acceptable to just return and not flag an error when there
is nothing to do. The main concern with the state management is to
trap errors such as trying to enable a stream that was not prepared
first.

This patch suggests allowing the stream functions to be idempotent,
i.e. they can be called multiple times.

Note that the prepare case was already handling multiple calls, this
was added in commit c32464c939 ("soundwire: stream: only prepare
stream when it is configured.")

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220126011715.28204-20-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-11 12:17:55 +05:30
Pierre-Louis Bossart
f3016b891c soundwire: stream: sdw_stream_add_ functions can be called multiple times
The sdw_stream_add_slave/master() functions are called from the
.hw_params stage. We need to make sure the functions can be called
multiple times.

In this version, we assume that only 'audio' parameters provide in the
hw_params() can change. If the number of ports could change
dynamically depending on the stream configuration (number of channels,
etc), we would need to free-up all the stream resources and reallocate
them.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220126011715.28204-19-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-11 12:17:55 +05:30
Pierre-Louis Bossart
5e1df5431f soundwire: stream: introduce sdw_slave_rt_find() helper
Before we split the alloc and config steps, we need a helper to find
the Slave runtime for a stream. The helper is based on the search loop
in sdw_slave_rt_free(), which can now be simplified.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220126011715.28204-18-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-11 12:17:55 +05:30
Pierre-Louis Bossart
ac3bc88cc5 soundwire: stream: separate alloc and config within sdw_stream_add_xxx()
Separate alloc and config parts so that follow-up patches can allow
for multiple calls to sdw_stream_add_slave/master. This is a feature
from the ALSA/ASoC frameworks which is not supported today.

This is an invasive patch which modifies the error handling flow, with
cleanups only done when an allocation fails. Configuration failures
only return an error code.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220126011715.28204-17-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-11 12:17:54 +05:30
Pierre-Louis Bossart
42aad41e96 soundwire: stream: move list addition to sdw_slave_alloc_rt()
Simplify sdw_stream_add_slave() by moving the linked list management
inside of the sdw_slave_alloc_rt_free() helper, this also makes the
alloc/free helpers more symmetrical.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220126011715.28204-16-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-11 12:17:54 +05:30
Pierre-Louis Bossart
00ce0d2afe soundwire: stream: rename and move master/slave_rt_free routines
The naming is rather inconsistent, use the sdw_<object>_<action>
convention, and move the free routine after alloc/config.

No functionality change beyond rename/move.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220126011715.28204-15-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-11 12:17:54 +05:30
Pierre-Louis Bossart
7a908906d0 soundwire: stream: group sdw_stream_ functions
Group all exported functions prior to split of add in alloc/config
stages necessary for support of multiple calls to hw_params() by
ALSA/ASoC core.

Pure code move, no functionality change.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220126011715.28204-14-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-11 12:17:44 +05:30
Pierre-Louis Bossart
edd5cf99a7 soundwire: stream: split sdw_alloc_slave_rt() in alloc and config
Split the two parts so that we can do multiple configurations during
ALSA/ASoC hw_params stage. Also follow existing convention
sdw_<object>_<action> used at lower level.

No functionality change here.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220126011715.28204-13-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-11 12:15:37 +05:30
Pierre-Louis Bossart
bf75ba4bdb soundwire: stream: move sdw_alloc_slave_rt() before 'master' helpers
Code move before splitting the function in two.
No functionality change.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220126011715.28204-12-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-11 12:15:37 +05:30
Pierre-Louis Bossart
bb10659a6f soundwire: stream: split sdw_alloc_master_rt() in alloc and config
Split the two parts so that we can do multiple configurations during
ALSA/ASoC hw_params stage. Also follow existing convention
sdw_<object>_<action> used at lower level.

No functionality change here.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220126011715.28204-11-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-11 12:15:37 +05:30
Pierre-Louis Bossart
1a21892d59 soundwire: stream: simplify sdw_alloc_master_rt()
Only do the allocation in that function, and move check for allocation
in the caller. This will it easier to split allocation and
configuration.

No functionality change in this patch.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220126011715.28204-10-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-11 12:15:37 +05:30
Pierre-Louis Bossart
c7aa9d770e soundwire: stream: group sdw_port and sdw_master/slave_port functions
re-group all the helpers in one location with a code move. For
consistency the 'slave' helpers are placed before the 'master'
helpers.

Also remove unused arguments and rename the 'release' function to
'free' for consistency.

No functional change in this patch.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220126011715.28204-9-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-11 12:15:36 +05:30
Pierre-Louis Bossart
4bbd6d55a6 soundwire: stream: add 'slave' prefix for port range checks
We can only check for Slave port ranges, the ports are not defined at
the Master level. Also move the function to the 'slave port' block.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220126011715.28204-8-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-11 12:15:36 +05:30
Pierre-Louis Bossart
1508876f02 soundwire: stream: split alloc and config in two functions
Continue the split with two functions for master and slave, and remove
unused arguments.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220126011715.28204-7-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-11 12:15:36 +05:30
Pierre-Louis Bossart
2811221a3f soundwire: stream: split port allocation and configuration loops
Split loops before moving the allocation and configuration to separate
functions.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220126011715.28204-6-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-11 12:15:36 +05:30
Pierre-Louis Bossart
6ccf3292e4 soundwire: stream: add alloc/config/free helpers for ports
The existing code only has a config helper that allocates memory,
start adding alloc/config/free for ports, as a first step in the
simplification of the stream API.

This change removes a kfree() on a configuration error, this should
have not impact on existing platforms and error handling will be
revisited in follow-up patches to make sure invalid configurations
have not impact on memory allocation.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220126011715.28204-5-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-11 12:15:36 +05:30
Pierre-Louis Bossart
5ec17b98f1 soundwire: stream: simplify check on port range
Pass the index directly to sdw_is_valid_port_range(), this will be
useful for further simplifications.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220126011715.28204-4-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-11 12:15:36 +05:30