March 2022 - Alsa-devel - mailman.alsa-project.org

[PATCH v2 00/20] Support external boost at CS35l41 ASoC driver
by Lucas Tanure 07 Mar '22

07 Mar '22

Move the support for CS35L41 external boost to its shared library for ASoC use. This move resulted in cs35l41_hda_reg_sequence being removed, and its steps were broken down into regmap writes or functions from the library. And hardware configuration struct was unified for its use in the shared lib. While at it, some minor bugs were found and fixed it. v2 changelog: - Instead of removing the log, playback actions will log the last regmap access. - Documentation patch with the correct subject line and fixed bug reported by Rob Herring on the provided example. Previous versions: v1: https://lkml.org/lkml/2022/3/3/759 David Rhodes (2): ASoC: cs35l41: Fix GPIO2 configuration ASoC: cs35l41: Document CS35l41 External Boost Lucas Tanure (18): ASoC: cs35l41: Fix max number of TX channels ASoC: cs35l41: Fix DSP mbox start command and global enable order ASoC: cs35l41: Remove unnecessary param sound: cs35l41: Unify hardware configuration sound: cs35l41: Check hw_config before using it sound: cs35l41: Move cs35l41_gpio_config to shared lib hda: cs35l41: Fix I2S params comments hda: cs35l41: Always configure the DAI hda: cs35l41: Add Boost type flag hda: cs35l41: Put the device into safe mode for external boost hda: cs35l41: Mute the device before shutdown sound: cs35l41: Enable Internal Boost in shared lib hda: cs35l41: Move boost config to initialization code hda: cs35l41: Remove cs35l41_hda_reg_sequence struct hda: cs35l41: Reorganize log for playback actions hda: cs35l41: Handle all external boost setups the same way hda: cs35l41: Move external boost handling to lib for ASoC use ASoC: cs35l41: Support external boost .../bindings/sound/cirrus,cs35l41.yaml | 44 ++- include/sound/cs35l41.h | 53 +++- sound/pci/hda/cs35l41_hda.c | 295 ++++++------------ sound/pci/hda/cs35l41_hda.h | 27 +- sound/soc/codecs/cs35l41-i2c.c | 4 +- sound/soc/codecs/cs35l41-lib.c | 190 ++++++++++- sound/soc/codecs/cs35l41-spi.c | 4 +- sound/soc/codecs/cs35l41.c | 174 +++++------ sound/soc/codecs/cs35l41.h | 5 +- 9 files changed, 440 insertions(+), 356 deletions(-) -- 2.35.1

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[PATCH 00/20] Support external boost at CS35l41 ASoC driver
by Lucas Tanure 07 Mar '22

07 Mar '22

Move the support for CS35L41 external boost to its shared library for ASoC use. This move resulted in cs35l41_hda_reg_sequence being removed, and its steps were broken down into regmap writes or functions from the library. And hardware configuration struct was unified for its use in the shared lib. While at it, some minor bugs were found and fixed it. David Rhodes (2): ASoC: cs35l41: Fix GPIO2 configuration Documentation: devicetree: CS35l41 External Boost Lucas Tanure (18): ASoC: cs35l41: Fix max number of TX channels ASoC: cs35l41: Fix DSP mbox start command and global enable order ASoC: cs35l41: Remove unnecessary param sound: cs35l41: Unify hardware configuration sound: cs35l41: Check hw_config before using it sound: cs35l41: Move cs35l41_gpio_config to shared lib hda: cs35l41: Fix I2S params comments hda: cs35l41: Always configure the DAI hda: cs35l41: Add Boost type flag hda: cs35l41: Put the device into safe mode for external boost hda: cs35l41: Mute the device before shutdown sound: cs35l41: Enable Internal Boost in shared lib hda: cs35l41: Move boost config to initialization code hda: cs35l41: Remove unnecessary log hda: cs35l41: Remove cs35l41_hda_reg_sequence struct hda: cs35l41: Handle all external boost setups the same way hda: cs35l41: Move external boost handling to lib for ASoC use ASoC: cs35l41: Support external boost .../bindings/sound/cirrus,cs35l41.yaml | 42 ++- include/sound/cs35l41.h | 53 +++- sound/pci/hda/cs35l41_hda.c | 296 +++++------------- sound/pci/hda/cs35l41_hda.h | 27 +- sound/soc/codecs/cs35l41-i2c.c | 4 +- sound/soc/codecs/cs35l41-lib.c | 185 ++++++++++- sound/soc/codecs/cs35l41-spi.c | 4 +- sound/soc/codecs/cs35l41.c | 174 +++++----- sound/soc/codecs/cs35l41.h | 5 +- 9 files changed, 431 insertions(+), 359 deletions(-) -- 2.35.1

4 33

[PATCH 0/1] ALSA: virtio: add support for audio controls
by Anton Yakovlev 07 Mar '22

07 Mar '22

Implementation of support for audio controls in accordance with the proposed extension of the virtio sound device specification [1]. Design　of virtual audio controls is based on and derived from ALSA audio controls. It allows the driver to perform all standard operations, such as reading and writing audio control value, as well as working with metadata (represented in the TLV form). The driver part was tested on top of the Linux 5.10 kernel. As a device part was used OpenSynergy proprietary implementation. [1] https://lists.oasis-open.org/archives/virtio-comment/202104/msg00013.html Anton Yakovlev (1): ALSA: virtio: add support for audio controls include/uapi/linux/virtio_snd.h | 154 +++++++++++ sound/virtio/Makefile | 1 + sound/virtio/virtio_card.c | 21 ++ sound/virtio/virtio_card.h | 22 ++ sound/virtio/virtio_kctl.c | 464 ++++++++++++++++++++++++++++++++ 5 files changed, 662 insertions(+) create mode 100644 sound/virtio/virtio_kctl.c -- 2.35.1

1 1

[PATCH 0/6] Remove usage of list iterator past the loop body
by Jakob Koschel 07 Mar '22

07 Mar '22

This is the first patch removing several categories of use cases of the list iterator variable past the loop. This is follow up to the discussion in: https://lore.kernel.org/all/20220217184829.1991035-1-jakobkoschel@gmail.com/ As concluded in: https://lore.kernel.org/all/YhdfEIwI4EdtHdym@kroah.com/ the correct use should be using a separate variable after the loop and using a 'tmp' variable as the list iterator. The list iterator will not point to a valid structure after the loop if no break/goto was hit. Invalid uses of the list iterator variable can be avoided altogether by simply using a separate pointer to iterate the list. Linus and Greg agreed on the following pattern: - struct gr_request *req; + struct gr_request *req = NULL; + struct gr_request *tmp; struct gr_ep *ep; int ret = 0; - list_for_each_entry(req, &ep->queue, queue) { - if (&req->req == _req) + list_for_each_entry(tmp, &ep->queue, queue) { + if (&tmp->req == _req) { + req = tmp; break; + } } - if (&req->req != _req) { + if (!req) { ret = -EINVAL; goto out; } With gnu89 the list iterator variable cannot yet be declared within the for loop of the list iterator. Moving to a more modern version of C would allow defining the list iterator variable within the macro, limiting the scope to the loop. This avoids any incorrect usage past the loop altogether. This are around 30% of the cases where the iterator variable is used past the loop (identified with a slightly modified version of use_after_iter.cocci). I've decided to split it into at a few patches separated by similar use cases. Because the output of get_maintainer.pl was too big, I included all the found lists and everyone from the previous discussion. Jakob Koschel (6): drivers: usb: remove usage of list iterator past the loop body treewide: remove using list iterator after loop body as a ptr treewide: fix incorrect use to determine if list is empty drivers: remove unnecessary use of list iterator variable treewide: remove dereference of list iterator after loop body treewide: remove check of list iterator against head past the loop body arch/arm/mach-mmp/sram.c | 9 ++-- arch/arm/plat-pxa/ssp.c | 28 +++++------- arch/powerpc/sysdev/fsl_gtm.c | 4 +- arch/x86/kernel/cpu/sgx/encl.c | 6 ++- drivers/block/drbd/drbd_req.c | 45 ++++++++++++------- drivers/counter/counter-chrdev.c | 26 ++++++----- drivers/crypto/cavium/nitrox/nitrox_main.c | 11 +++-- drivers/dma/dw-edma/dw-edma-core.c | 4 +- drivers/dma/ppc4xx/adma.c | 11 +++-- drivers/firewire/core-transaction.c | 32 +++++++------ drivers/firewire/sbp2.c | 14 +++--- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 19 +++++--- drivers/gpu/drm/drm_memory.c | 15 ++++--- drivers/gpu/drm/drm_mm.c | 17 ++++--- drivers/gpu/drm/drm_vm.c | 13 +++--- drivers/gpu/drm/gma500/oaktrail_lvds.c | 9 ++-- drivers/gpu/drm/i915/gem/i915_gem_context.c | 14 +++--- .../gpu/drm/i915/gem/i915_gem_execbuffer.c | 15 ++++--- drivers/gpu/drm/i915/gt/intel_ring.c | 15 ++++--- .../gpu/drm/nouveau/nvkm/subdev/clk/base.c | 11 +++-- .../gpu/drm/nouveau/nvkm/subdev/fb/ramgk104.c | 13 +++--- drivers/gpu/drm/scheduler/sched_main.c | 14 +++--- drivers/gpu/drm/ttm/ttm_bo.c | 19 ++++---- drivers/gpu/drm/vmwgfx/vmwgfx_kms.c | 22 +++++---- drivers/infiniband/hw/hfi1/tid_rdma.c | 16 ++++--- drivers/infiniband/hw/mlx4/main.c | 12 ++--- drivers/media/dvb-frontends/mxl5xx.c | 11 +++-- drivers/media/pci/saa7134/saa7134-alsa.c | 4 +- drivers/media/v4l2-core/v4l2-ctrls-api.c | 31 +++++++------ drivers/misc/mei/interrupt.c | 12 ++--- .../net/ethernet/intel/i40e/i40e_ethtool.c | 3 +- .../net/ethernet/qlogic/qede/qede_filter.c | 11 +++-- drivers/net/wireless/ath/ath6kl/htc_mbox.c | 2 +- .../net/wireless/intel/ipw2x00/libipw_rx.c | 15 ++++--- drivers/perf/xgene_pmu.c | 13 +++--- drivers/power/supply/cpcap-battery.c | 11 +++-- drivers/scsi/lpfc/lpfc_bsg.c | 16 ++++--- drivers/scsi/scsi_transport_sas.c | 17 ++++--- drivers/scsi/wd719x.c | 12 +++-- drivers/staging/rtl8192e/rtl819x_TSProc.c | 17 +++---- drivers/staging/rtl8192e/rtllib_rx.c | 17 ++++--- .../staging/rtl8192u/ieee80211/ieee80211_rx.c | 15 ++++--- .../rtl8192u/ieee80211/rtl819x_TSProc.c | 19 ++++---- drivers/thermal/thermal_core.c | 38 ++++++++++------ drivers/usb/gadget/composite.c | 9 ++-- drivers/usb/gadget/configfs.c | 22 +++++---- drivers/usb/gadget/udc/aspeed-vhub/epn.c | 11 +++-- drivers/usb/gadget/udc/at91_udc.c | 26 ++++++----- drivers/usb/gadget/udc/atmel_usba_udc.c | 11 +++-- drivers/usb/gadget/udc/bdc/bdc_ep.c | 11 +++-- drivers/usb/gadget/udc/fsl_qe_udc.c | 11 +++-- drivers/usb/gadget/udc/fsl_udc_core.c | 11 +++-- drivers/usb/gadget/udc/goku_udc.c | 11 +++-- drivers/usb/gadget/udc/gr_udc.c | 11 +++-- drivers/usb/gadget/udc/lpc32xx_udc.c | 11 +++-- drivers/usb/gadget/udc/max3420_udc.c | 11 +++-- drivers/usb/gadget/udc/mv_u3d_core.c | 11 +++-- drivers/usb/gadget/udc/mv_udc_core.c | 11 +++-- drivers/usb/gadget/udc/net2272.c | 12 ++--- drivers/usb/gadget/udc/net2280.c | 11 +++-- drivers/usb/gadget/udc/omap_udc.c | 11 +++-- drivers/usb/gadget/udc/pxa25x_udc.c | 11 +++-- drivers/usb/gadget/udc/s3c-hsudc.c | 11 +++-- drivers/usb/gadget/udc/tegra-xudc.c | 11 +++-- drivers/usb/gadget/udc/udc-xilinx.c | 11 +++-- drivers/usb/mtu3/mtu3_gadget.c | 11 +++-- drivers/usb/musb/musb_gadget.c | 11 +++-- drivers/vfio/mdev/mdev_core.c | 11 +++-- fs/cifs/smb2misc.c | 10 +++-- fs/f2fs/segment.c | 9 ++-- fs/proc/kcore.c | 13 +++--- kernel/debug/kdb/kdb_main.c | 36 +++++++++------ kernel/power/snapshot.c | 10 +++-- kernel/trace/ftrace.c | 22 +++++---- kernel/trace/trace_eprobe.c | 15 ++++--- kernel/trace/trace_events.c | 11 ++--- net/9p/trans_xen.c | 11 +++-- net/ipv4/udp_tunnel_nic.c | 10 +++-- net/tipc/name_table.c | 11 +++-- net/tipc/socket.c | 11 +++-- net/xfrm/xfrm_ipcomp.c | 11 +++-- sound/soc/intel/catpt/pcm.c | 13 +++--- sound/soc/sprd/sprd-mcdt.c | 13 +++--- 83 files changed, 708 insertions(+), 465 deletions(-) base-commit: 7ee022567bf9e2e0b3cd92461a2f4986ecc99673 -- 2.25.1

9 23

[PATCH v2] dt-bindings: mfd: Fix pinctrl node name warnings
by Rob Herring 07 Mar '22

07 Mar '22

The recent addition pinctrl.yaml in commit c09acbc499e8 ("dt-bindings: pinctrl: use pinctrl.yaml") resulted in some node name warnings: Documentation/devicetree/bindings/mfd/cirrus,lochnagar.example.dt.yaml: \ lochnagar-pinctrl: $nodename:0: 'lochnagar-pinctrl' does not match '^(pinctrl|pinmux)(@[0-9a-f]+)?$' Documentation/devicetree/bindings/mfd/cirrus,madera.example.dt.yaml: \ codec@1a: $nodename:0: 'codec@1a' does not match '^(pinctrl|pinmux)(@[0-9a-f]+)?$' Documentation/devicetree/bindings/mfd/brcm,cru.example.dt.yaml: \ pin-controller@1c0: $nodename:0: 'pin-controller@1c0' does not match '^(pinctrl|pinmux)(@[0-9a-f]+)?$' Fix the node names to the preferred 'pinctrl'. For cirrus,madera, nothing from pinctrl.yaml schema is used, so just drop the reference. Fixes: c09acbc499e8 ("dt-bindings: pinctrl: use pinctrl.yaml") Cc: Rafał Miłecki <rafal(a)milecki.pl> Signed-off-by: Rob Herring <robh(a)kernel.org> --- v2: - Fix lochnagar-pinctrl nodename in example Documentation/devicetree/bindings/mfd/brcm,cru.yaml | 4 ++-- Documentation/devicetree/bindings/mfd/cirrus,lochnagar.yaml | 4 ++-- Documentation/devicetree/bindings/pinctrl/cirrus,madera.yaml | 3 --- 3 files changed, 4 insertions(+), 7 deletions(-) diff --git a/Documentation/devicetree/bindings/mfd/brcm,cru.yaml b/Documentation/devicetree/bindings/mfd/brcm,cru.yaml index be4a2df71c25..b85819fbb07c 100644 --- a/Documentation/devicetree/bindings/mfd/brcm,cru.yaml +++ b/Documentation/devicetree/bindings/mfd/brcm,cru.yaml @@ -39,7 +39,7 @@ patternProperties: '^phy@[a-f0-9]+$': $ref: ../phy/bcm-ns-usb2-phy.yaml - '^pin-controller@[a-f0-9]+$': + '^pinctrl@[a-f0-9]+$': $ref: ../pinctrl/brcm,ns-pinmux.yaml '^syscon@[a-f0-9]+$': @@ -94,7 +94,7 @@ examples: reg = <0x180 0x4>; }; - pin-controller@1c0 { + pinctrl@1c0 { compatible = "brcm,bcm4708-pinmux"; reg = <0x1c0 0x24>; reg-names = "cru_gpio_control"; diff --git a/Documentation/devicetree/bindings/mfd/cirrus,lochnagar.yaml b/Documentation/devicetree/bindings/mfd/cirrus,lochnagar.yaml index c00ad3e21c21..a04570335b76 100644 --- a/Documentation/devicetree/bindings/mfd/cirrus,lochnagar.yaml +++ b/Documentation/devicetree/bindings/mfd/cirrus,lochnagar.yaml @@ -126,7 +126,7 @@ properties: clock-frequency: const: 12288000 - lochnagar-pinctrl: + pinctrl: type: object $ref: /schemas/pinctrl/cirrus,lochnagar.yaml# @@ -293,7 +293,7 @@ examples: clock-frequency = <32768>; }; - lochnagar-pinctrl { + pinctrl { compatible = "cirrus,lochnagar-pinctrl"; gpio-controller; diff --git a/Documentation/devicetree/bindings/pinctrl/cirrus,madera.yaml b/Documentation/devicetree/bindings/pinctrl/cirrus,madera.yaml index c85f759ae5a3..8a90d8273767 100644 --- a/Documentation/devicetree/bindings/pinctrl/cirrus,madera.yaml +++ b/Documentation/devicetree/bindings/pinctrl/cirrus,madera.yaml @@ -107,9 +107,6 @@ properties: additionalProperties: false -allOf: - - $ref: "pinctrl.yaml#" - required: - pinctrl-0 - pinctrl-names -- 2.32.0

2 1

[PATCH] ASoC: intel: use asoc_substream_to_rtd()
by zhanglianjie 07 Mar '22

07 Mar '22

Now we can use asoc_substream_to_rtd() macro, let's use it. Signed-off-by: zhanglianjie <zhanglianjie(a)uniontech.com> diff --git a/sound/soc/intel/catpt/pcm.c b/sound/soc/intel/catpt/pcm.c index 939a9b801dec..a26000cd5ceb 100644 --- a/sound/soc/intel/catpt/pcm.c +++ b/sound/soc/intel/catpt/pcm.c @@ -74,7 +74,7 @@ static struct catpt_stream_template *catpt_topology[] = { static struct catpt_stream_template * catpt_get_stream_template(struct snd_pcm_substream *substream) { - struct snd_soc_pcm_runtime *rtm = substream->private_data; + struct snd_soc_pcm_runtime *rtm = asoc_substream_to_rtd(substream); struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtm, 0); enum catpt_stream_type type; @@ -593,7 +593,7 @@ static int catpt_component_pcm_construct(struct snd_soc_component *component, static int catpt_component_open(struct snd_soc_component *component, struct snd_pcm_substream *substream) { - struct snd_soc_pcm_runtime *rtm = substream->private_data; + struct snd_soc_pcm_runtime *rtm = asoc_substream_to_rtd(substream); if (!rtm->dai_link->no_pcm) snd_soc_set_runtime_hwparams(substream, &catpt_pcm_hardware); @@ -604,7 +604,7 @@ static snd_pcm_uframes_t catpt_component_pointer(struct snd_soc_component *component, struct snd_pcm_substream *substream) { - struct snd_soc_pcm_runtime *rtm = substream->private_data; + struct snd_soc_pcm_runtime *rtm = asoc_substream_to_rtd(substream); struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtm, 0); struct catpt_stream_runtime *stream; struct catpt_dev *cdev = dev_get_drvdata(component->dev); -- 2.20.1

3 2

[PATCH] ASoC: simple-card: add bindings for amplifier support
by Alifer Moraes 07 Mar '22

07 Mar '22

From: Pierluigi Passaro <pierluigi.p(a)variscite.com> Add an optional property 'pa-gpios' for controlling external amplifier, which depends on DAPM widgets and routing. Signed-off-by: Pierluigi Passaro <pierluigi.p(a)variscite.com> Signed-off-by: Alifer Moraes <alifer.m(a)variscite.com> --- sound/soc/generic/simple-card.c | 37 +++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c index a89d1cfdda32..d042be556f1b 100644 --- a/sound/soc/generic/simple-card.c +++ b/sound/soc/generic/simple-card.c @@ -10,6 +10,7 @@ #include <linux/module.h> #include <linux/of.h> #include <linux/of_device.h> +#include <linux/of_gpio.h> #include <linux/platform_device.h> #include <linux/string.h> #include <sound/simple_card.h> @@ -22,6 +23,33 @@ #define CELL "#sound-dai-cells" #define PREFIX "simple-audio-card," +static int simple_outdrv_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, + int event) +{ + struct snd_soc_dapm_context *dapm = w->dapm; + struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(dapm->card); + + switch (event) { + case SND_SOC_DAPM_POST_PMU: + gpiod_set_value_cansleep(priv->pa_gpio, 1); + break; + case SND_SOC_DAPM_PRE_PMD: + gpiod_set_value_cansleep(priv->pa_gpio, 0); + break; + default: + return -EINVAL; + } + + return 0; +} + +static const struct snd_soc_dapm_widget simple_dapm_widgets[] = { + SND_SOC_DAPM_OUT_DRV_E("Amplifier", SND_SOC_NOPM, + 0, 0, NULL, 0, simple_outdrv_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), +}; + static const struct snd_soc_ops simple_ops = { .startup = asoc_simple_startup, .shutdown = asoc_simple_shutdown, @@ -620,6 +648,8 @@ static int asoc_simple_probe(struct platform_device *pdev) card = simple_priv_to_card(priv); card->owner = THIS_MODULE; card->dev = dev; + card->dapm_widgets = simple_dapm_widgets; + card->num_dapm_widgets = ARRAY_SIZE(simple_dapm_widgets); card->probe = simple_soc_probe; card->driver_name = "simple-card"; @@ -638,6 +668,13 @@ static int asoc_simple_probe(struct platform_device *pdev) if (ret < 0) return ret; + priv->pa_gpio = devm_gpiod_get_optional(dev, "pa", GPIOD_OUT_LOW); + if (IS_ERR(priv->pa_gpio)) { + ret = PTR_ERR(priv->pa_gpio); + dev_err(dev, "failed to get amplifier gpio: %d\n", ret); + return ret; + } + if (np && of_device_is_available(np)) { ret = simple_parse_of(priv, li); -- 2.25.1

2 1

[PATCH v2 0/6] Add driver for SAMA7G5's PDMC
by Codrin Ciubotariu 07 Mar '22

07 Mar '22

This patch series adds support for Pulse Density Microphone Controller (PDMC), present on Microchip's SAMA7G5. The PDMC interfaces up to 4 digital microphones having Pulse Density Modulated (PDM) outputs. It generates a single clock line and samples 1 or 2 data lines. The signal path includes an audio grade programmable decimation filter and outputs 24-bit audio words. The source of each channel can be independently defined as PDMC_DS0 or PDMC_DS1, sampled at the rising or falling edge of PDMC_CLK. The patch series starts with a fix on the ASoC DMA engine support. Then continues with the bindings and the driver of PDMC. It is followed by the DT nodes for SAMA7G5 and SAMA7G5-EK. In the end, the drivers for PDMC and PDM microphones are enabled in sama7_defconfig. Changes in v2: - addressed comments from Krzysztof Kozlowski Codrin Ciubotariu (6): ASoC: dmaengine: do not use a NULL prepare_slave_config() callback ASoC: dt-bindings: Document Microchip's PDMC ASoC: atmel: mchp-pdmc: add PDMC driver ARM: dts: at91: sama7g5: add nodes for PDMC ARM: dts: at91: sama7g5ek: add node for PDMC0 ARM: configs: at91: sama7_defconfig: add MCHP PDMC and DMIC drivers .../bindings/sound/microchip,pdmc.yaml | 99 ++ arch/arm/boot/dts/at91-sama7g5ek.dts | 21 +- arch/arm/boot/dts/sama7g5.dtsi | 24 + arch/arm/configs/sama7_defconfig | 2 + include/dt-bindings/sound/microchip,pdmc.h | 13 + sound/soc/atmel/Kconfig | 16 + sound/soc/atmel/Makefile | 2 + sound/soc/atmel/mchp-pdmc.c | 1084 +++++++++++++++++ sound/soc/soc-generic-dmaengine-pcm.c | 6 +- 9 files changed, 1263 insertions(+), 4 deletions(-) create mode 100644 Documentation/devicetree/bindings/sound/microchip,pdmc.yaml create mode 100644 include/dt-bindings/sound/microchip,pdmc.h create mode 100644 sound/soc/atmel/mchp-pdmc.c -- 2.32.0

3 9

Re: [syzbot] possible deadlock in snd_timer_interrupt (2)
by syzbot 07 Mar '22

07 Mar '22

syzbot has found a reproducer for the following issue on: HEAD commit: 38f80f42147f MAINTAINERS: Remove dead patchwork link git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=161736d6700000 kernel config: https://syzkaller.appspot.com/x/.config?x=4e9585407e09f75f dashboard link: https://syzkaller.appspot.com/bug?extid=1ee0910eca9c94f71f25 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11b6ad85700000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12527ef1700000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+1ee0910eca9c94f71f25(a)syzkaller.appspotmail.com ======================================================== WARNING: possible irq lock inversion dependency detected 5.17.0-rc6-syzkaller-00184-g38f80f42147f #0 Not tainted -------------------------------------------------------- syz-executor301/4486 just changed the state of lock: ffff88814a78a948 (&timer->lock){..-.}-{2:2}, at: snd_timer_interrupt.part.0+0x34/0xcf0 sound/core/timer.c:856 but this lock took another, SOFTIRQ-READ-unsafe lock in the past: (tasklist_lock){.+.+}-{2:2} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Chain exists of: &timer->lock --> &new->fa_lock --> tasklist_lock Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(tasklist_lock); local_irq_disable(); lock(&timer->lock); lock(&new->fa_lock); <Interrupt> lock(&timer->lock); *** DEADLOCK *** 1 lock held by syz-executor301/4486: #0: ffffc90000007d70 ((&priv->tlist)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:35 [inline] #0: ffffc90000007d70 ((&priv->tlist)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x6b0 kernel/time/timer.c:1411 the shortest dependencies between 2nd lock and 1st lock: -> (tasklist_lock){.+.+}-{2:2} { HARDIRQ-ON-R at: lock_acquire kernel/locking/lockdep.c:5639 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228 do_wait+0x284/0xce0 kernel/exit.c:1518 kernel_wait+0x9c/0x150 kernel/exit.c:1708 call_usermodehelper_exec_sync kernel/umh.c:139 [inline] call_usermodehelper_exec_work+0xf5/0x180 kernel/umh.c:166 process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307 worker_thread+0x657/0x1110 kernel/workqueue.c:2454 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 SOFTIRQ-ON-R at: lock_acquire kernel/locking/lockdep.c:5639 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228 do_wait+0x284/0xce0 kernel/exit.c:1518 kernel_wait+0x9c/0x150 kernel/exit.c:1708 call_usermodehelper_exec_sync kernel/umh.c:139 [inline] call_usermodehelper_exec_work+0xf5/0x180 kernel/umh.c:166 process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307 worker_thread+0x657/0x1110 kernel/workqueue.c:2454 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5639 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0x32/0x50 kernel/locking/spinlock.c:326 copy_process+0x486a/0x7250 kernel/fork.c:2295 kernel_clone+0xe7/0xab0 kernel/fork.c:2565 kernel_thread+0xb5/0xf0 kernel/fork.c:2617 rest_init+0x23/0x3e0 init/main.c:690 start_kernel+0x47a/0x49b init/main.c:1138 secondary_startup_64_no_verify+0xc3/0xcb INITIAL READ USE at: lock_acquire kernel/locking/lockdep.c:5639 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228 do_wait+0x284/0xce0 kernel/exit.c:1518 kernel_wait+0x9c/0x150 kernel/exit.c:1708 call_usermodehelper_exec_sync kernel/umh.c:139 [inline] call_usermodehelper_exec_work+0xf5/0x180 kernel/umh.c:166 process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307 worker_thread+0x657/0x1110 kernel/workqueue.c:2454 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 } ... key at: [<ffffffff8b80a098>] tasklist_lock+0x18/0x40 ... acquired at: __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228 send_sigio+0xab/0x380 fs/fcntl.c:810 kill_fasync_rcu fs/fcntl.c:1021 [inline] kill_fasync fs/fcntl.c:1035 [inline] kill_fasync+0x1f8/0x470 fs/fcntl.c:1028 snd_timer_user_ccallback+0x298/0x330 sound/core/timer.c:1386 snd_timer_notify1+0x11c/0x3b0 sound/core/timer.c:516 snd_timer_stop1+0x496/0x860 sound/core/timer.c:657 snd_timer_stop sound/core/timer.c:710 [inline] snd_timer_close_locked+0x20f/0xbb0 sound/core/timer.c:408 snd_timer_close+0x87/0xf0 sound/core/timer.c:463 __snd_timer_user_ioctl.isra.0+0x10e2/0x2490 sound/core/timer.c:1762 snd_timer_user_ioctl+0x77/0xb0 sound/core/timer.c:2128 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae -> (&f->f_owner.lock){....}-{2:2} { INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5639 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0x32/0x50 kernel/locking/spinlock.c:326 f_modown+0x2a/0x390 fs/fcntl.c:91 __f_setown fs/fcntl.c:110 [inline] f_setown+0xd7/0x230 fs/fcntl.c:138 do_fcntl+0x749/0x1210 fs/fcntl.c:393 __do_sys_fcntl fs/fcntl.c:472 [inline] __se_sys_fcntl fs/fcntl.c:457 [inline] __x64_sys_fcntl+0x165/0x1e0 fs/fcntl.c:457 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae INITIAL READ USE at: lock_acquire kernel/locking/lockdep.c:5639 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236 send_sigio+0x24/0x380 fs/fcntl.c:796 kill_fasync_rcu fs/fcntl.c:1021 [inline] kill_fasync fs/fcntl.c:1035 [inline] kill_fasync+0x1f8/0x470 fs/fcntl.c:1028 snd_timer_user_ccallback+0x298/0x330 sound/core/timer.c:1386 snd_timer_notify1+0x11c/0x3b0 sound/core/timer.c:516 snd_timer_start1+0x4d4/0x800 sound/core/timer.c:578 snd_timer_start sound/core/timer.c:696 [inline] snd_timer_start sound/core/timer.c:689 [inline] snd_timer_user_start.isra.0+0x1e3/0x260 sound/core/timer.c:1984 __snd_timer_user_ioctl.isra.0+0xda8/0x2490 sound/core/timer.c:2107 snd_timer_user_ioctl+0x77/0xb0 sound/core/timer.c:2128 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae } ... key at: [<ffffffff90585a40>] __key.5+0x0/0x40 ... acquired at: __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236 send_sigio+0x24/0x380 fs/fcntl.c:796 kill_fasync_rcu fs/fcntl.c:1021 [inline] kill_fasync fs/fcntl.c:1035 [inline] kill_fasync+0x1f8/0x470 fs/fcntl.c:1028 snd_timer_user_ccallback+0x298/0x330 sound/core/timer.c:1386 snd_timer_notify1+0x11c/0x3b0 sound/core/timer.c:516 snd_timer_start1+0x4d4/0x800 sound/core/timer.c:578 snd_timer_start sound/core/timer.c:696 [inline] snd_timer_start sound/core/timer.c:689 [inline] snd_timer_user_start.isra.0+0x1e3/0x260 sound/core/timer.c:1984 __snd_timer_user_ioctl.isra.0+0xda8/0x2490 sound/core/timer.c:2107 snd_timer_user_ioctl+0x77/0xb0 sound/core/timer.c:2128 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae -> (&new->fa_lock){....}-{2:2} { INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5639 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0x32/0x50 kernel/locking/spinlock.c:326 fasync_remove_entry+0xb6/0x1f0 fs/fcntl.c:891 fasync_helper+0x9e/0xb0 fs/fcntl.c:994 __fput+0x846/0x9f0 fs/file_table.c:314 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 exit_task_work include/linux/task_work.h:32 [inline] do_exit+0xb29/0x2a30 kernel/exit.c:806 do_group_exit+0xd2/0x2f0 kernel/exit.c:935 __do_sys_exit_group kernel/exit.c:946 [inline] __se_sys_exit_group kernel/exit.c:944 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:944 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae INITIAL READ USE at: lock_acquire kernel/locking/lockdep.c:5639 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:1014 [inline] kill_fasync fs/fcntl.c:1035 [inline] kill_fasync+0x136/0x470 fs/fcntl.c:1028 snd_timer_user_ccallback+0x298/0x330 sound/core/timer.c:1386 snd_timer_notify1+0x11c/0x3b0 sound/core/timer.c:516 snd_timer_start1+0x4d4/0x800 sound/core/timer.c:578 snd_timer_start sound/core/timer.c:696 [inline] snd_timer_start sound/core/timer.c:689 [inline] snd_timer_user_start.isra.0+0x1e3/0x260 sound/core/timer.c:1984 __snd_timer_user_ioctl.isra.0+0xda8/0x2490 sound/core/timer.c:2107 snd_timer_user_ioctl+0x77/0xb0 sound/core/timer.c:2128 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae } ... key at: [<ffffffff90586820>] __key.0+0x0/0x40 ... acquired at: __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:1014 [inline] kill_fasync fs/fcntl.c:1035 [inline] kill_fasync+0x136/0x470 fs/fcntl.c:1028 snd_timer_user_ccallback+0x298/0x330 sound/core/timer.c:1386 snd_timer_notify1+0x11c/0x3b0 sound/core/timer.c:516 snd_timer_start1+0x4d4/0x800 sound/core/timer.c:578 snd_timer_start sound/core/timer.c:696 [inline] snd_timer_start sound/core/timer.c:689 [inline] snd_timer_user_start.isra.0+0x1e3/0x260 sound/core/timer.c:1984 __snd_timer_user_ioctl.isra.0+0xda8/0x2490 sound/core/timer.c:2107 snd_timer_user_ioctl+0x77/0xb0 sound/core/timer.c:2128 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae -> (&timer->lock){..-.}-{2:2} { IN-SOFTIRQ-W at: lock_acquire kernel/locking/lockdep.c:5639 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162 snd_timer_interrupt.part.0+0x34/0xcf0 sound/core/timer.c:856 snd_timer_interrupt sound/core/timer.c:1154 [inline] snd_timer_s_function+0x14b/0x200 sound/core/timer.c:1154 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers.part.0+0x67c/0xa30 kernel/time/timer.c:1734 __run_timers kernel/time/timer.c:1715 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 bytes_is_nonzero mm/kasan/generic.c:85 [inline] memory_is_nonzero mm/kasan/generic.c:102 [inline] memory_is_poisoned_n mm/kasan/generic.c:128 [inline] memory_is_poisoned mm/kasan/generic.c:159 [inline] check_region_inline mm/kasan/generic.c:180 [inline] kasan_check_range+0xde/0x180 mm/kasan/generic.c:189 instrument_atomic_read include/linux/instrumented.h:71 [inline] atomic_long_read include/linux/atomic/atomic-instrumented.h:1265 [inline] filp_close+0x22/0x170 fs/open.c:1318 close_files fs/file.c:403 [inline] put_files_struct fs/file.c:418 [inline] put_files_struct+0x1d0/0x350 fs/file.c:415 exit_files+0x7e/0xa0 fs/file.c:435 do_exit+0xaf2/0x2a30 kernel/exit.c:801 do_group_exit+0xd2/0x2f0 kernel/exit.c:935 __do_sys_exit_group kernel/exit.c:946 [inline] __se_sys_exit_group kernel/exit.c:944 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:944 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5639 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162 snd_timer_stop1+0x5c/0x860 sound/core/timer.c:626 snd_timer_stop sound/core/timer.c:710 [inline] snd_timer_user_start.isra.0+0x8b/0x260 sound/core/timer.c:1981 __snd_timer_user_ioctl.isra.0+0xda8/0x2490 sound/core/timer.c:2107 snd_timer_user_ioctl+0x77/0xb0 sound/core/timer.c:2128 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae } ... key at: [<ffffffff908843c0>] __key.12+0x0/0x40 ... acquired at: mark_lock kernel/locking/lockdep.c:4569 [inline] mark_usage kernel/locking/lockdep.c:4500 [inline] __lock_acquire+0x11e3/0x56c0 kernel/locking/lockdep.c:4981 lock_acquire kernel/locking/lockdep.c:5639 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162 snd_timer_interrupt.part.0+0x34/0xcf0 sound/core/timer.c:856 snd_timer_interrupt sound/core/timer.c:1154 [inline] snd_timer_s_function+0x14b/0x200 sound/core/timer.c:1154 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers.part.0+0x67c/0xa30 kernel/time/timer.c:1734 __run_timers kernel/time/timer.c:1715 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 bytes_is_nonzero mm/kasan/generic.c:85 [inline] memory_is_nonzero mm/kasan/generic.c:102 [inline] memory_is_poisoned_n mm/kasan/generic.c:128 [inline] memory_is_poisoned mm/kasan/generic.c:159 [inline] check_region_inline mm/kasan/generic.c:180 [inline] kasan_check_range+0xde/0x180 mm/kasan/generic.c:189 instrument_atomic_read include/linux/instrumented.h:71 [inline] atomic_long_read include/linux/atomic/atomic-instrumented.h:1265 [inline] filp_close+0x22/0x170 fs/open.c:1318 close_files fs/file.c:403 [inline] put_files_struct fs/file.c:418 [inline] put_files_struct+0x1d0/0x350 fs/file.c:415 exit_files+0x7e/0xa0 fs/file.c:435 do_exit+0xaf2/0x2a30 kernel/exit.c:801 do_group_exit+0xd2/0x2f0 kernel/exit.c:935 __do_sys_exit_group kernel/exit.c:946 [inline] __se_sys_exit_group kernel/exit.c:944 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:944 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae stack backtrace: CPU: 0 PID: 4486 Comm: syz-executor301 Not tainted 5.17.0-rc6-syzkaller-00184-g38f80f42147f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_irq_inversion_bug kernel/locking/lockdep.c:194 [inline] check_usage_forwards kernel/locking/lockdep.c:4043 [inline] mark_lock_irq kernel/locking/lockdep.c:4175 [inline] mark_lock.part.0.cold+0x86/0xd8 kernel/locking/lockdep.c:4605 mark_lock kernel/locking/lockdep.c:4569 [inline] mark_usage kernel/locking/lockdep.c:4500 [inline] __lock_acquire+0x11e3/0x56c0 kernel/locking/lockdep.c:4981 lock_acquire kernel/locking/lockdep.c:5639 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162 snd_timer_interrupt.part.0+0x34/0xcf0 sound/core/timer.c:856 snd_timer_interrupt sound/core/timer.c:1154 [inline] snd_timer_s_function+0x14b/0x200 sound/core/timer.c:1154 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers.part.0+0x67c/0xa30 kernel/time/timer.c:1734 __run_timers kernel/time/timer.c:1715 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:85 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0xde/0x180 mm/kasan/generic.c:189 Code: 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 75 56 5b 5d 41 5c c3 48 85 d2 74 5e 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 50 80 38 00 <74> f2 eb d4 41 bc 08 00 00 00 48 89 ea 45 29 dc 4d 8d 1c 2c eb 0c RSP: 0018:ffffc9000376fd30 EFLAGS: 00000246 RAX: ffffed100f1d3d9f RBX: ffffed100f1d3da0 RCX: ffffffff81cb24b2 RDX: ffffed100f1d3da0 RSI: 0000000000000008 RDI: ffff888078e9ecf8 RBP: ffffed100f1d3d9f R08: 0000000000000000 R09: ffff888078e9ecff R10: ffffed100f1d3d9f R11: 0000000000000000 R12: ffff88807ee70f00 R13: ffff888078e9ecf8 R14: ffff88807ee70f00 R15: ffff88807ee71028 instrument_atomic_read include/linux/instrumented.h:71 [inline] atomic_long_read include/linux/atomic/atomic-instrumented.h:1265 [inline] filp_close+0x22/0x170 fs/open.c:1318 close_files fs/file.c:403 [inline] put_files_struct fs/file.c:418 [inline] put_files_struct+0x1d0/0x350 fs/file.c:415 exit_files+0x7e/0xa0 fs/file.c:435 do_exit+0xaf2/0x2a30 kernel/exit.c:801 do_group_exit+0xd2/0x2f0 kernel/exit.c:935 __do_sys_exit_group kernel/exit.c:946 [inline] __se_sys_exit_group kernel/exit.c:944 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:944 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7ff95f986c99 Code: Unable to access opcode bytes at RIP 0x7ff95f986c6f. RSP: 002b:00007ffecd4a5e98 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007ff95f9fb330 RCX: 00007ff95f986c99 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000246 R12: 00007ff95f9fb330 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 </TASK> ---------------- Code disassembly (best guess): 0: 74 f2 je 0xfffffff4 2: 48 89 c2 mov %rax,%rdx 5: b8 01 00 00 00 mov $0x1,%eax a: 48 85 d2 test %rdx,%rdx d: 75 56 jne 0x65 f: 5b pop %rbx 10: 5d pop %rbp 11: 41 5c pop %r12 13: c3 retq 14: 48 85 d2 test %rdx,%rdx 17: 74 5e je 0x77 19: 48 01 ea add %rbp,%rdx 1c: eb 09 jmp 0x27 1e: 48 83 c0 01 add $0x1,%rax 22: 48 39 d0 cmp %rdx,%rax 25: 74 50 je 0x77 27: 80 38 00 cmpb $0x0,(%rax) * 2a: 74 f2 je 0x1e <-- trapping instruction 2c: eb d4 jmp 0x2 2e: 41 bc 08 00 00 00 mov $0x8,%r12d 34: 48 89 ea mov %rbp,%rdx 37: 45 29 dc sub %r11d,%r12d 3a: 4d 8d 1c 2c lea (%r12,%rbp,1),%r11 3e: eb 0c jmp 0x4c

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[PATCH 0/6] Add driver for SAMA7G5's PDMC
by Codrin Ciubotariu 07 Mar '22

07 Mar '22

This patch series adds support for Pulse Density Microphone Controller (PDMC), present on Microchip's SAMA7G5. The PDMC interfaces up to 4 digital microphones having Pulse Density Modulated (PDM) outputs. It generates a single clock line and samples 1 or 2 data lines. The signal path includes an audio grade programmable decimation filter and outputs 24-bit audio words. The source of each channel can be independently defined as PDMC_DS0 or PDMC_DS1, sampled at the rising or falling edge of PDMC_CLK. The patch series starts with a fix on the ASoC DMA engine support. Then continues with the bindings and the driver of PDMC. It is followed by the DT nodes for SAMA7G5 and SAMA7G5-EK. In the end, the drivers for PDMC and PDM microphones are enabled in sama7_defconfig. Codrin Ciubotariu (6): ASoC: dmaengine: do not use a NULL prepare_slave_config() callback ASoC: add DT bindings for Microchip PDMC ASoC: atmel: mchp-pdmc: add PDMC driver ARM: dts: at91: sama7g5: add nodes for PDMC ARM: dts: at91: sama7g5ek: add node for PDMC0 ARM: configs: at91: sama7_defconfig: add MCHP PDMC and DMIC drivers .../devicetree/bindings/sound/mchp,pdmc.yaml | 99 ++ arch/arm/boot/dts/at91-sama7g5ek.dts | 21 +- arch/arm/boot/dts/sama7g5.dtsi | 24 + arch/arm/configs/sama7_defconfig | 2 + include/dt-bindings/sound/mchp,pdmc.h | 13 + sound/soc/atmel/Kconfig | 16 + sound/soc/atmel/Makefile | 2 + sound/soc/atmel/mchp-pdmc.c | 1084 +++++++++++++++++ sound/soc/soc-generic-dmaengine-pcm.c | 6 +- 9 files changed, 1263 insertions(+), 4 deletions(-) create mode 100644 Documentation/devicetree/bindings/sound/mchp,pdmc.yaml create mode 100644 include/dt-bindings/sound/mchp,pdmc.h create mode 100644 sound/soc/atmel/mchp-pdmc.c -- 2.32.0

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