HifiBerry DAC Light: Playback open error: -16,Device or resource busy

Code:
    [    0.000000] Booting Linux on physical CPU 0x0

    [    0.000000] Linux version 5.10.17+ (dom@buildbot) (arm-linux-gnueabihf-gcc-8 (Ubuntu/Linaro 8.4.0-3ubuntu1) 8.4.0, GNU ld (GNU Binutils for Ubuntu) 2.34) #1421 Thu May 27 13:58:02 BST 2021

    [    0.000000] CPU: ARMv6-compatible processor [410fb767] revision 7 (ARMv7), cr=00c5387d

    [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT nonaliasing instruction cache

    [    0.000000] OF: fdt: Machine model: Raspberry Pi Zero W Rev 1.1

    [    0.000000] Memory policy: Data cache writeback

    [    0.000000] Reserved memory: created CMA memory pool at 0x17c00000, size 64 MiB

    [    0.000000] OF: reserved mem: initialized node linux,cma, compatible id shared-dma-pool

    [    0.000000] Zone ranges:

    [    0.000000]  Normal  [mem 0x0000000000000000-0x000000001bffffff]

    [    0.000000] Movable zone start for each node

    [    0.000000] Early memory node ranges

    [    0.000000]  node  0: [mem 0x0000000000000000-0x000000001bffffff]

    [    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x000000001bffffff]

    [    0.000000] On node 0 totalpages: 114688

    [    0.000000]  Normal zone: 1008 pages used for memmap

    [    0.000000]  Normal zone: 0 pages reserved

    [    0.000000]  Normal zone: 114688 pages, LIFO batch:31

    [    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768

    [    0.000000] pcpu-alloc: [0] 0 

    [    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 113680

    [    0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 bcm2708_fb.fbwidth=1824 bcm2708_fb.fbheight=984 bcm2708_fb.fbswap=1 smsc95xx.macaddr=B8:27:EB:D4:A5:66 vc_mem.mem_base=0x1ec00000 vc_mem.mem_size=0x20000000  console=tty1 root=PARTUUID=3146c77c-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait fastboot noswap ro rfkill.default_state=1 systemd.restore_state=0 ipv6.disable=1

    [    0.000000] Kernel parameter elevator= does not have any effect anymore.

                  Please use sysfs to set IO scheduler for individual devices.

    [    0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes, linear)

    [    0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes, linear)

    [    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off

    [    0.000000] Memory: 374452K/458752K available (8638K kernel code, 1324K rwdata, 2816K rodata, 420K init, 837K bss, 18764K reserved, 65536K cma-reserved)

    [    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1

    [    0.000000] ftrace: allocating 30576 entries in 60 pages

    [    0.000000] ftrace: allocated 60 pages with 4 groups

    [    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16

    [    0.000000] random: get_random_bytes called from start_kernel+0x324/0x564 with crng_init=0

    [    0.000024] sched_clock: 32 bits at 1000kHz, resolution 1000ns, wraps every 2147483647500ns

    [    0.000094] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275 ns

    [    0.000180] bcm2835: system timer (irq = 27)

    [    0.000837] Console: colour dummy device 80x30

    [    0.001508] printk: console [tty1] enabled

    [    0.001604] Calibrating delay loop... 697.95 BogoMIPS (lpj=3489792)

    [    0.060338] pid_max: default: 32768 minimum: 301

    [    0.060631] LSM: Security Framework initializing

    [    0.060953] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)

    [    0.061021] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)

    [    0.063169] Disabling memory control group subsystem

    [    0.063466] CPU: Testing write buffer coherency: ok

    [    0.065269] Setting up static identity map for 0x8200 - 0x8238

    [    0.066531] devtmpfs: initialized

    [    0.079605] VFP support v0.3: implementor 41 architecture 1 part 20 variant b rev 5

    [    0.079991] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns

    [    0.080074] futex hash table entries: 256 (order: -1, 3072 bytes, linear)

    [    0.087942] pinctrl core: initialized pinctrl subsystem

    [    0.089814] NET: Registered protocol family 16

    [    0.094742] DMA: preallocated 1024 KiB pool for atomic coherent allocations

    [    0.101160] audit: initializing netlink subsys (disabled)

    [    0.102649] thermal_sys: Registered thermal governor 'step_wise'

    [    0.103837] hw-breakpoint: found 6 breakpoint and 1 watchpoint registers.

    [    0.103926] hw-breakpoint: maximum watchpoint size is 4 bytes.

    [    0.104187] Serial: AMBA PL011 UART driver

    [    0.110687] audit: type=2000 audit(0.100:1): state=initialized audit_enabled=0 res=1

    [    0.131280] bcm2835-mbox 2000b880.mailbox: mailbox enabled

    [    0.150819] raspberrypi-firmware soc:firmware: Attached to firmware from 2021-05-27T14:04:13, variant start

    [    0.160837] raspberrypi-firmware soc:firmware: Firmware hash is 7d9a298cda813f747b51fe17e1e417e7bf5ca94d

    [    0.219148] bcm2835-dma 20007000.dma: DMA legacy API manager, dmachans=0x1

    [    0.222337] SCSI subsystem initialized

    [    0.222812] usbcore: registered new interface driver usbfs

    [    0.222958] usbcore: registered new interface driver hub

    [    0.223091] usbcore: registered new device driver usb

    [    0.225981] clocksource: Switched to clocksource timer

    [    2.224305] VFS: Disk quotas dquot_6.6.0

    [    2.224485] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)

    [    2.224769] FS-Cache: Loaded

    [    2.225156] CacheFiles: Loaded

    [    2.243293] NET: Registered protocol family 2

    [    2.244607] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 4096 bytes, linear)

    [    2.244757] TCP established hash table entries: 4096 (order: 2, 16384 bytes, linear)

    [    2.244875] TCP bind hash table entries: 4096 (order: 2, 16384 bytes, linear)

    [    2.244978] TCP: Hash tables configured (established 4096 bind 4096)

    [    2.245182] UDP hash table entries: 256 (order: 0, 4096 bytes, linear)

    [    2.245257] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes, linear)

    [    2.245748] NET: Registered protocol family 1

    [    2.247086] RPC: Registered named UNIX socket transport module.

    [    2.247158] RPC: Registered udp transport module.

    [    2.247194] RPC: Registered tcp transport module.

    [    2.247227] RPC: Registered tcp NFSv4.1 backchannel transport module.

    [    2.248965] hw perfevents: no irqs for PMU, sampling events not supported

    [    2.249086] hw perfevents: enabled with armv6_1176 PMU driver, 3 counters available

    [    2.253610] Initialise system trusted keyrings

    [    2.254307] workingset: timestamp_bits=14 max_order=17 bucket_order=3

    [    2.266428] zbud: loaded

    [    2.269457] FS-Cache: Netfs 'nfs' registered for caching

    [    2.270906] NFS: Registering the id_resolver key type

    [    2.271017] Key type id_resolver registered

    [    2.271057] Key type id_legacy registered

    [    2.271340] nfs4filelayout_init: NFSv4 File Layout Driver Registering...

    [    2.273268] Key type asymmetric registered

    [    2.273343] Asymmetric key parser 'x509' registered

    [    2.273462] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 249)

    [    2.273514] io scheduler mq-deadline registered

    [    2.273551] io scheduler kyber registered

    [    2.276836] bcm2708_fb soc:fb: FB found 1 display(s)

    [    2.336006] random: fast init done

    [    2.337596] Console: switching to colour frame buffer device 228x61

    [    2.371478] bcm2708_fb soc:fb: Registered framebuffer for display 0, size 1824x984

    [    2.378061] Serial: 8250/16550 driver, 1 ports, IRQ sharing enabled

    [    2.382738] bcm2835-rng 20104000.rng: hwrng registered

    [    2.383680] vc-mem: phys_addr:0x00000000 mem_base=0x1ec00000 mem_size:0x20000000(512 MiB)

    [    2.385756] gpiomem-bcm2835 20200000.gpiomem: Initialised: Registers at 0x20200000

    [    2.410558] brd: module loaded

    [    2.427652] loop: module loaded

    [    2.430117] Loading iSCSI transport class v2.0-870.

    [    2.433093] libphy: Fixed MDIO Bus: probed

    [    2.433764] usbcore: registered new interface driver smsc95xx

    [    2.434037] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)

    [    3.162621] Core Release: 2.80a

    [    3.162787] Setting default values for core params

    [    3.162980] Finished setting default values for core params

    [    3.363527] Using Buffer DMA mode

    [    3.363715] Periodic Transfer Interrupt Enhancement - disabled

    [    3.363949] Multiprocessor Interrupt Enhancement - disabled

    [    3.364171] OTG VER PARAM: 0, OTG VER FLAG: 0

    [    3.364514] Dedicated Tx FIFOs mode

    

    [    3.365731] WARN::dwc_otg_hcd_init:1074: FIQ DMA bounce buffers: virt = d7d14000 dma = 0x97d14000 len=9024

    [    3.366291] FIQ FSM acceleration enabled for :

                  Non-periodic Split Transactions

                  Periodic Split Transactions

                  High-Speed Isochronous Endpoints

                  Interrupt/Control Split Transaction hack enabled

    [    3.384785] dwc_otg: Microframe scheduler enabled

    

    [    3.385078] WARN::hcd_init_fiq:457: FIQ on core 0

    

    [    3.402779] WARN::hcd_init_fiq:458: FIQ ASM at c0652330 length 36

    

    [    3.420225] WARN::hcd_init_fiq:497: MPHI regs_base at dc810000

    [    3.437734] dwc_otg 20980000.usb: DWC OTG Controller

    [    3.446566] dwc_otg 20980000.usb: new USB bus registered, assigned bus number 1

    [    3.455853] dwc_otg 20980000.usb: irq 56, io mem 0x00000000

    [    3.464828] Init: Port Power? op_state=1

    [    3.473964] Init: Power Port (0)

    [    3.483320] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.10

    [    3.492609] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1

    [    3.501493] usb usb1: Product: DWC OTG Controller

    [    3.510617] usb usb1: Manufacturer: Linux 5.10.17+ dwc_otg_hcd

    [    3.519416] usb usb1: SerialNumber: 20980000.usb

    [    3.529629] hub 1-0:1.0: USB hub found

    [    3.538898] hub 1-0:1.0: 1 port detected

    [    3.549568] dwc_otg: FIQ enabled

    [    3.549596] dwc_otg: NAK holdoff enabled

    [    3.549612] dwc_otg: FIQ split-transaction FSM enabled

    [    3.549641] Module dwc_common_port init

    [    3.550285] usbcore: registered new interface driver usb-storage

    [    3.560327] mousedev: PS/2 mouse device common for all mice

    [    3.571227] bcm2835-wdt bcm2835-wdt: Broadcom BCM2835 watchdog timer

    [    3.584041] sdhci: Secure Digital Host Controller Interface driver

    [    3.593410] sdhci: Copyright(c) Pierre Ossman

    [    3.603346] mmc-bcm2835 20300000.mmcnr: could not get clk, deferring probe

    [    3.613484] sdhost-bcm2835 20202000.mmc: could not get clk, deferring probe

    [    3.623359] sdhci-pltfm: SDHCI platform and OF driver helper

    [    3.633329] ledtrig-cpu: registered to indicate activity on CPUs

    [    3.643352] hid: raw HID events driver (C) Jiri Kosina

    [    3.652701] usbcore: registered new interface driver usbhid

    [    3.661966] usbhid: USB HID core driver

    [    3.678494] Initializing XFRM netlink socket

    [    3.688402] NET: Registered protocol family 17

    [    3.697448] Key type dns_resolver registered

    [    3.707688] registered taskstats version 1

    [    3.716325] Loading compiled-in X.509 certificates

    [    3.742627] uart-pl011 20201000.serial: there is not valid maps for state default

    [    3.751834] uart-pl011 20201000.serial: cts_event_workaround enabled

    [    3.761071] 20201000.serial: ttyAMA0 at MMIO 0x20201000 (irq = 81, base_baud = 0) is a PL011 rev2

    [    3.775038] 20215040.serial: ttyS0 at MMIO 0x20215040 (irq = 53, base_baud = 50000000) is a 16550

    [    3.785955] bcm2835-power bcm2835-power: Broadcom BCM2835 power domains driver

    [    3.797867] mmc-bcm2835 20300000.mmcnr: mmc_debug:0 mmc_debug2:0

    [    3.807293] mmc-bcm2835 20300000.mmcnr: DMA channel allocated

    [    3.817112] Indeed it is in host mode hprt0 = 00021501

    [    3.902442] sdhost: log_buf @ (ptrval) (97d13000)

    [    3.948707] mmc1: queuing unknown CIS tuple 0x80 (2 bytes)

    [    3.959950] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)

    [    3.968964] mmc0: sdhost-bcm2835 loaded - DMA enabled (>1)

    [    3.982942] of_cfs_init

    [    4.012592] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)

    [    4.022145] of_cfs_init: OK

    [    4.034383] Waiting for root device PARTUUID=3146c77c-02...

    [    4.043745] mmc1: queuing unknown CIS tuple 0x80 (7 bytes)

    [    4.052693] usb 1-1: new full-speed USB device number 2 using dwc_otg

    [    4.062733] Indeed it is in host mode hprt0 = 00021501

    [    4.195171] mmc0: host does not support reading read-only switch, assuming write-enable

    [    4.211216] mmc0: new high speed SDHC card at address aaaa

    [    4.222662] mmcblk0: mmc0:aaaa SC16G 14.8 GiB

    [    4.240270]  mmcblk0: p1 p2 p3

    [    4.280667] mmc1: new high speed SDIO card at address 0001

    [    4.304744] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)

    [    4.315938] VFS: Mounted root (ext4 filesystem) readonly on device 179:2.

    [    4.326869] usb 1-1: New USB device found, idVendor=05ac, idProduct=026c, bcdDevice= 8.52

    [    4.336410] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3

    [    4.345786] usb 1-1: Product: Magic Keyboard with Numeric Keypad

    [    4.355218] usb 1-1: Manufacturer: Apple Inc.

    [    4.364461] usb 1-1: SerialNumber: F0T92730023HTH7A2

    [    4.385403] devtmpfs: mounted

    [    4.396270] hid-generic 0003:05AC:026C.0001: hiddev96,hidraw0: USB HID v1.10 Device [Apple Inc. Magic Keyboard with Numeric Keypad] on usb-20980000.usb-1/input0

    [    4.413658] Freeing unused kernel memory: 420K

    [    4.423704] Kernel memory protection not selected by kernel config.

    [    4.434842] Run /sbin/init as init process

    [    4.444952]  with arguments:

    [    4.444970]    /sbin/init

    [    4.444983]    fastboot

    [    4.444994]    noswap

    [    4.445005]  with environment:

    [    4.445035]    HOME=/

    [    4.445048]    TERM=linux

    [    4.452313] input: Apple Inc. Magic Keyboard with Numeric Keypad Keyboard as /devices/platform/soc/20980000.usb/usb1/1-1/1-1:1.1/0003:05AC:026C.0002/input/input0

    [    4.527922] input: Apple Inc. Magic Keyboard with Numeric Keypad Consumer Control as /devices/platform/soc/20980000.usb/usb1/1-1/1-1:1.1/0003:05AC:026C.0002/input/input1

    [    4.541240] hid-generic 0003:05AC:026C.0002: input,hiddev97,hidraw1: USB HID v1.10 Keyboard [Apple Inc. Magic Keyboard with Numeric Keypad] on usb-20980000.usb-1/input1

    [    5.238181] systemd[1]: System time before build time, advancing clock.

    [    5.439140] IPv6: Loaded, but administratively disabled, reboot required to enable

    [    5.563080] systemd[1]: systemd 241 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN2 +IDN -PCRE2 default-hierarchy=hybrid)

    [    5.589103] systemd[1]: Detected architecture arm.

    [    5.659426] systemd[1]: Set hostname to <samplerbox>.

    [    8.136422] random: systemd: uninitialized urandom read (16 bytes read)

    [    8.454686] random: systemd: uninitialized urandom read (16 bytes read)

    [    8.467467] systemd[1]: Listening on initctl Compatibility Named Pipe.

    [    8.494437] random: systemd: uninitialized urandom read (16 bytes read)

    [    8.507256] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.

    [    8.535132] systemd[1]: Listening on udev Control Socket.

    [    8.563405] systemd[1]: Listening on Journal Socket.

    [    8.611751] systemd[1]: Starting Load Kernel Modules...

    [    8.661744] systemd[1]: Condition check resulted in Huge Pages File System being skipped.

    [    8.718250] systemd[1]: Starting Create list of required static device nodes for the current kernel...

    [    8.939906] i2c /dev entries driver

    [  10.690822] systemd[1]: Starting File System Check on Root Device...

    [  10.898150] systemd[1]: Starting Apply Kernel Variables...

    [  11.030153] systemd[1]: Condition check resulted in FUSE Control File System being skipped.

    [  11.217841] systemd[1]: Mounting Kernel Configuration File System...

    [  11.506741] systemd[1]: Started File System Check on Root Device.

    [  11.706469] systemd[1]: Started Apply Kernel Variables.

    [  11.749962] systemd[1]: Mounted Kernel Configuration File System.

    [  11.891236] systemd[1]: Starting Remount Root and Kernel File Systems...

    [  11.947422] systemd[1]: Started Journal Service.

    [  12.980713] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)

    [  14.389957] systemd-journald[93]: Received request to flush runtime journal from PID 1

    [  16.312245] mc: Linux media interface: v0.10

    [  16.556352] vc_sm_cma: module is from the staging directory, the quality is unknown, you have been warned.

    [  16.559460] bcm2835_vc_sm_cma_probe: Videocore shared memory driver

    [  16.559502] [vc_sm_connected_init]: start

    [  16.648788] [vc_sm_connected_init]: installed successfully

    [  16.723125] videodev: Linux video capture interface: v2.00

    [  16.936569] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.

    [  16.941069] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.

    [  16.988566] bcm2835_v4l2: module is from the staging directory, the quality is unknown, you have been warned.

    [  17.022186] bcm2835_isp: module is from the staging directory, the quality is unknown, you have been warned.

    [  17.071235] bcm2835_codec: module is from the staging directory, the quality is unknown, you have been warned.

    [  17.175308] bcm2835-isp bcm2835-isp: Device node output[0] registered as /dev/video13

    [  17.182074] bcm2835-isp bcm2835-isp: Device node capture[0] registered as /dev/video14

    [  17.206769] bcm2835-isp bcm2835-isp: Device node capture[1] registered as /dev/video15

    [  17.212548] bcm2835-isp bcm2835-isp: Device node stats[2] registered as /dev/video16

    [  17.212605] bcm2835-isp bcm2835-isp: Register output node 0 with media controller

    [  17.212642] bcm2835-isp bcm2835-isp: Register capture node 1 with media controller

    [  17.212672] bcm2835-isp bcm2835-isp: Register capture node 2 with media controller

    [  17.212701] bcm2835-isp bcm2835-isp: Register capture node 3 with media controller

    [  17.226221] bcm2835-codec bcm2835-codec: Device registered as /dev/video10

    [  17.226315] bcm2835-codec bcm2835-codec: Loaded V4L2 decode

    [  17.227381] bcm2835-isp bcm2835-isp: Loaded V4L2 bcm2835-isp

    [  17.298697] bcm2835-codec bcm2835-codec: Device registered as /dev/video11

    [  17.298802] bcm2835-codec bcm2835-codec: Loaded V4L2 encode

    [  17.372001] bcm2835-codec bcm2835-codec: Device registered as /dev/video12

    [  17.372109] bcm2835-codec bcm2835-codec: Loaded V4L2 isp

    [  20.598371] cfg80211: Loading compiled-in X.509 certificates for regulatory database

    [  21.218907] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'

    [  22.097172] brcmfmac: F1 signature read @0x18000000=0x1541a9a6

    [  22.107958] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43430-sdio for chip BCM43430/1

    [  22.108481] usbcore: registered new interface driver brcmfmac

    [  22.143502] brcmfmac mmc1:0001:1: Direct firmware load for brcm/brcmfmac43430-sdio.raspberrypi,model-zero-w.txt failed with error -2

    [  22.442506] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43430-sdio for chip BCM43430/1

    [  22.442778] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available (err=-2), device may have limited channels available

    [  22.444096] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM43430/1 wl0: Oct 22 2019 01:59:28 version 7.45.98.94 (r723000 CY) FWID 01-3b33decd

    [  22.458127] apple 0003:05AC:026C.0001: hiddev96,hidraw0: USB HID v1.10 Device [Apple Inc. Magic Keyboard with Numeric Keypad] on usb-20980000.usb-1/input0

    [  22.649823] input: Apple Inc. Magic Keyboard with Numeric Keypad as /devices/platform/soc/20980000.usb/usb1/1-1/1-1:1.1/0003:05AC:026C.0002/input/input3

    [  22.767935] apple 0003:05AC:026C.0002: input,hiddev97,hidraw1: USB HID v1.10 Keyboard [Apple Inc. Magic Keyboard with Numeric Keypad] on usb-20980000.usb-1/input1

    [  25.205255] random: crng init done

    [  25.205289] random: 7 urandom warning(s) missed due to ratelimiting

    [  26.324655] fuse: init (API version 7.32)

    [  31.331165] 8021q: 802.1Q VLAN Support v1.8

    [  39.661065] brcmfmac: brcmf_cfg80211_set_power_mgmt: power save enabled

    [  451.617136] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)