Re: [PATCH v2] driver core: Update device link status correctly for SYNC_STATE_ONLY links

From: Michael Walle
Date: Tue May 26 2020 - 17:13:35 EST

Am 2020-05-26 21:43, schrieb Saravana Kannan:
When SYNC_STATE_ONLY support was added in commit 05ef983e0d65 ("driver
core: Add device link support for SYNC_STATE_ONLY flag"),
SYNC_STATE_ONLY links were treated similar to STATELESS links in terms
of not blocking consumer probe if the supplier hasn't probed yet.

That caused a SYNC_STATE_ONLY device link's status to not get updated.
Since SYNC_STATE_ONLY device link is no longer useful once the
consumer probes, commit 21c27f06587d ("driver core: Fix
SYNC_STATE_ONLY device link implementation") addresses the status
update issue by deleting the SYNC_STATE_ONLY device link instead of
complicating the status update code.

However, there are still some cases where we need to update the status
of a SYNC_STATE_ONLY device link. This is because a SYNC_STATE_ONLY
device link can later get converted into a normal MANAGED device link
when a normal MANAGED device link is created between a supplier and
consumer that already have a SYNC_STATE_ONLY device link between them.

If a SYNC_STATE_ONLY device link's status isn't maintained correctly
till it's converted to a normal MANAGED device link, then the normal
MANAGED device link will end up with a wrong link status. This can cause
a warning stack trace[1] when the consumer device probes successfully.

This commit fixes the SYNC_STATE_ONLY device link status update issue
where it wouldn't transition correctly from DL_STATE_DORMANT or
DL_STATE_AVAILABLE to DL_STATE_CONSUMER_PROBE. It also resets the status
back to DL_STATE_DORMANT or DL_STATE_AVAILABLE if the consumer probe
fails.

[1] - https://lore.kernel.org/lkml/20200522204120.3b3c9ed6@apollo/
Fixes: 05ef983e0d65 ("driver core: Add device link support for
SYNC_STATE_ONLY flag")
Fixes: 21c27f06587d ("driver core: Fix SYNC_STATE_ONLY device link
implementation")
Reported-by: Michael Walle <michael@xxxxxxxx>
Signed-off-by: Saravana Kannan <saravanak@xxxxxxxxxx>
---

v1->v2:
- Added code to "revert" the link status if consumer probe fails

Greg,

I think this is the issue Michael ran into. I'd like him to test the fix
before it's pulled in.

Michael,

If you can test this on the branch you saw the issue in and give a
Tested-by if it works, that'd be great.

with v2 I'm triggering the
WARN_ON(!(link->status & DL_FLAG_SYNC_STATE_ONLY));
in __device_links_no_driver().

I've added the debug output for this WARN_ON()

[ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd083]
[ 0.000000] Linux version 5.7.0-rc7-next-20200525-00001-ged5852b8c488-dirty (mw@apollo) (aarch64-linux-gnu-gcc (Debian 8.3.0-2) 8.3.0, GNU ld (GNU Binutils for Debian) 2.31.1) #836 SMP PREEMPT Tue May 26 23:08:57 CEST 2020
[ 0.000000] Machine model: Kontron SMARC-sAL28 (Single PHY) on SMARC Eval 2.0 carrier
[ 0.000000] efi: UEFI not found.
[ 0.000000] cma: Reserved 32 MiB at 0x00000000f9c00000
[ 0.000000] NUMA: No NUMA configuration found
[ 0.000000] NUMA: Faking a node at [mem 0x0000000080000000-0x00000020ffffffff]
[ 0.000000] NUMA: NODE_DATA [mem 0x20ff7fe100-0x20ff7fffff]
[ 0.000000] Zone ranges:
[ 0.000000] DMA [mem 0x0000000080000000-0x00000000bfffffff]
[ 0.000000] DMA32 [mem 0x00000000c0000000-0x00000000ffffffff]
[ 0.000000] Normal [mem 0x0000000100000000-0x00000020ffffffff]
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000080000000-0x00000000fbdfffff]
[ 0.000000] node 0: [mem 0x0000002080000000-0x00000020ffffffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000080000000-0x00000020ffffffff]
[ 0.000000] On node 0 totalpages: 1031680
[ 0.000000] DMA zone: 4096 pages used for memmap
[ 0.000000] DMA zone: 0 pages reserved
[ 0.000000] DMA zone: 262144 pages, LIFO batch:63
[ 0.000000] DMA32 zone: 3832 pages used for memmap
[ 0.000000] DMA32 zone: 245248 pages, LIFO batch:63
[ 0.000000] Normal zone: 8192 pages used for memmap
[ 0.000000] Normal zone: 524288 pages, LIFO batch:63
[ 0.000000] percpu: Embedded 30 pages/cpu s82904 r8192 d31784 u122880
[ 0.000000] pcpu-alloc: s82904 r8192 d31784 u122880 alloc=30*4096
[ 0.000000] pcpu-alloc: [0] 0 [0] 1
[ 0.000000] Detected PIPT I-cache on CPU0
[ 0.000000] CPU features: detected: GIC system register CPU interface
[ 0.000000] CPU features: detected: EL2 vector hardening
[ 0.000000] ARM_SMCCC_ARCH_WORKAROUND_1 missing from firmware
[ 0.000000] CPU features: detected: ARM errata 1165522, 1319367, or 1530923
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 1015560
[ 0.000000] Policy zone: Normal
[ 0.000000] Kernel command line: debug root=/dev/mmcblk1p2 rootwait
[ 0.000000] Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes, linear)
[ 0.000000] Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes, linear)
[ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[ 0.000000] software IO TLB: mapped [mem 0xbbfff000-0xbffff000] (64MB)
[ 0.000000] Memory: 3930016K/4126720K available (9532K kernel code, 1114K rwdata, 3556K rodata, 3200K init, 398K bss, 163936K reserved, 32768K cma-reserved)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
[ 0.000000] ftrace: allocating 32616 entries in 128 pages
[ 0.000000] ftrace: allocated 128 pages with 1 groups
[ 0.000000] rcu: Preemptible hierarchical RCU implementation.
[ 0.000000] rcu: RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=2.
[ 0.000000] Trampoline variant of Tasks RCU enabled.
[ 0.000000] Rude variant of Tasks RCU enabled.
[ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies.
[ 0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
[ 0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0
[ 0.000000] GICv3: GIC: Using split EOI/Deactivate mode
[ 0.000000] GICv3: 256 SPIs implemented
[ 0.000000] GICv3: 0 Extended SPIs implemented
[ 0.000000] GICv3: Distributor has no Range Selector support
[ 0.000000] GICv3: 16 PPIs implemented
[ 0.000000] GICv3: CPU0: found redistributor 0 region 0:0x0000000006040000
[ 0.000000] ITS [mem 0x06020000-0x0603ffff]
[ 0.000000] ITS@0x0000000006020000: allocated 65536 Devices @20fad80000 (flat, esz 8, psz 64K, shr 0)
[ 0.000000] ITS: using cache flushing for cmd queue
[ 0.000000] GICv3: using LPI property table @0x00000020fad30000
[ 0.000000] GIC: using cache flushing for LPI property table
[ 0.000000] GICv3: CPU0: using allocated LPI pending table @0x00000020fad40000
[ 0.000000] random: get_random_bytes called from start_kernel+0x604/0x7cc with crng_init=0
[ 0.000000] arch_timer: cp15 timer(s) running at 25.00MHz (phys).
[ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x5c40939b5, max_idle_ns: 440795202646 ns
[ 0.000002] sched_clock: 56 bits at 25MHz, resolution 40ns, wraps every 4398046511100ns
[ 0.000107] Console: colour dummy device 80x25
[ 0.000391] printk: console [tty0] enabled
[ 0.000439] Calibrating delay loop (skipped), value calculated using timer frequency.. 50.00 BogoMIPS (lpj=100000)
[ 0.000452] pid_max: default: 32768 minimum: 301
[ 0.000499] LSM: Security Framework initializing
[ 0.000551] Mount-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)
[ 0.000582] Mountpoint-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)
[ 0.001429] rcu: Hierarchical SRCU implementation.
[ 0.001578] Platform MSI: gic-its@6020000 domain created
[ 0.001651] PCI/MSI: /interrupt-controller@6000000/gic-its@6020000 domain created
[ 0.001850] EFI services will not be available.
[ 0.001946] smp: Bringing up secondary CPUs ...
[ 0.002223] Detected PIPT I-cache on CPU1
[ 0.002244] GICv3: CPU1: found redistributor 1 region 0:0x0000000006060000
[ 0.002250] GICv3: CPU1: using allocated LPI pending table @0x00000020fad50000
[ 0.002273] CPU1: Booted secondary processor 0x0000000001 [0x410fd083]
[ 0.002324] smp: Brought up 1 node, 2 CPUs
[ 0.002350] SMP: Total of 2 processors activated.
[ 0.002358] CPU features: detected: 32-bit EL0 Support
[ 0.002365] CPU features: detected: CRC32 instructions
[ 0.010433] CPU: All CPU(s) started at EL2
[ 0.010452] alternatives: patching kernel code
[ 0.011049] devtmpfs: initialized
[ 0.012987] KASLR disabled due to lack of seed
[ 0.013150] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[ 0.013167] futex hash table entries: 512 (order: 3, 32768 bytes, linear)
[ 0.013938] thermal_sys: Registered thermal governor 'step_wise'
[ 0.014061] DMI not present or invalid.
[ 0.014244] NET: Registered protocol family 16
[ 0.015143] DMA: preallocated 4096 KiB GFP_KERNEL pool for atomic allocations
[ 0.015851] DMA: preallocated 4096 KiB GFP_KERNEL|GFP_DMA pool for atomic allocations
[ 0.016580] DMA: preallocated 4096 KiB GFP_KERNEL|GFP_DMA32 pool for atomic allocations
[ 0.016617] audit: initializing netlink subsys (disabled)
[ 0.016739] audit: type=2000 audit(0.016:1): state=initialized audit_enabled=0 res=1
[ 0.017038] cpuidle: using governor menu
[ 0.017107] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers.
[ 0.017137] ASID allocator initialised with 65536 entries
[ 0.017403] Serial: AMBA PL011 UART driver
[ 0.023156] platform 2140000.mmc: Link attempted to 5000000.iommu 0xc0
[ 0.023170] platform 2140000.mmc: Link done to 5000000.iommu 0xc0 0
[ 0.023193] platform 2150000.mmc: Link attempted to 5000000.iommu 0xc0
[ 0.023202] platform 2150000.mmc: Link done to 5000000.iommu 0xc0 0
[ 0.023265] platform 22c0000.dma-controller: Link attempted to 5000000.iommu 0xc0
[ 0.023275] platform 22c0000.dma-controller: Link done to 5000000.iommu 0xc0 0
[ 0.023317] platform 3100000.usb: Link attempted to 5000000.iommu 0xc0
[ 0.023325] platform 3100000.usb: Link done to 5000000.iommu 0xc0 0
[ 0.023341] platform 3110000.usb: Link attempted to 5000000.iommu 0xc0
[ 0.023349] platform 3110000.usb: Link done to 5000000.iommu 0xc0 0
[ 0.023375] platform 3400000.pcie: Link attempted to 5000000.iommu 0xc0
[ 0.023383] platform 3400000.pcie: Link done to 5000000.iommu 0xc0 0
[ 0.023406] platform 3500000.pcie: Link attempted to 5000000.iommu 0xc0
[ 0.023414] platform 3500000.pcie: Link done to 5000000.iommu 0xc0 0
[ 0.023431] platform 8380000.dma-controller: Link attempted to 5000000.iommu 0xc0
[ 0.023441] platform 8380000.dma-controller: Link done to 5000000.iommu 0xc0 0
[ 0.023540] platform 1f0000000.pcie: Link attempted to 5000000.iommu 0xc0
[ 0.023548] platform 1f0000000.pcie: Link done to 5000000.iommu 0xc0 0
[ 0.023591] platform f080000.display: Link attempted to 5000000.iommu 0xc0
[ 0.023600] platform f080000.display: Link done to 5000000.iommu 0xc0 0
[ 0.023867] Machine: Kontron SMARC-sAL28 (Single PHY) on SMARC Eval 2.0 carrier
[ 0.023877] SoC family: QorIQ LS1028A
[ 0.023882] SoC ID: svr:0x870b0110, Revision: 1.0
[ 0.026885] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages
[ 0.026899] HugeTLB registered 32.0 MiB page size, pre-allocated 0 pages
[ 0.026907] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[ 0.026915] HugeTLB registered 64.0 KiB page size, pre-allocated 0 pages
[ 0.027977] cryptd: max_cpu_qlen set to 1000
[ 0.029319] ------------[ cut here ]------------
[ 0.029332] sup:5000000.iommu - con:22c0000.dma-controller f:192 s:2
[ 0.029369] WARNING: CPU: 0 PID: 1 at drivers/base/core.c:993 __device_links_no_driver+0xf0/0xf8
[ 0.029377] Modules linked in:
[ 0.029387] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.7.0-rc7-next-20200525-00001-ged5852b8c488-dirty #836
[ 0.029396] Hardware name: Kontron SMARC-sAL28 (Single PHY) on SMARC Eval 2.0 carrier (DT)
[ 0.029407] pstate: 60000005 (nZCv daif -PAN -UAO BTYPE=--)
[ 0.029414] pc : __device_links_no_driver+0xf0/0xf8
[ 0.029421] lr : __device_links_no_driver+0xf0/0xf8
[ 0.029426] sp : ffff80001118bbb0
[ 0.029432] x29: ffff80001118bbb0 x28: 0000000000000000
[ 0.029440] x27: 0000000000000004 x26: ffff800010cd04e8
[ 0.029447] x25: ffff800010d51950 x24: ffff00207a41bc10
[ 0.029455] x23: 0000000000000001 x22: ffff800010bd4698
[ 0.029462] x21: ffff00207a41bcb0 x20: ffff00207a401080
[ 0.029469] x19: ffff00207a41bc90 x18: 0000000000000010
[ 0.029476] x17: 0000000057af2a13 x16: 00000000ad23dded
[ 0.029483] x15: ffffffffffffffff x14: 0720072007200720
[ 0.029490] x13: 0720072007200720 x12: 07200732073a0773
[ 0.029497] x11: 0720073207390731 x10: 073a076607200772
[ 0.029504] x9 : ffff800010091f64 x8 : 07720774076e076f
[ 0.029511] x7 : 0000000000000087 x6 : ffff00207ac21f00
[ 0.029518] x5 : 0000000000000000 x4 : 0000000000000000
[ 0.029525] x3 : 00000000ffffffff x2 : ffff80001101b6c8
[ 0.029531] x1 : 3ee0a21bc55cf800 x0 : 0000000000000000
[ 0.029539] Call trace:
[ 0.029546] __device_links_no_driver+0xf0/0xf8
[ 0.029553] device_links_no_driver+0x74/0x90
[ 0.029561] really_probe+0x1ac/0x318
[ 0.029568] driver_probe_device+0x40/0x90
[ 0.029574] device_driver_attach+0x7c/0x88
[ 0.029581] __driver_attach+0x60/0xe8
[ 0.029588] bus_for_each_dev+0x7c/0xd0
[ 0.029594] driver_attach+0x2c/0x38
[ 0.029600] bus_add_driver+0x194/0x1f8
[ 0.029607] driver_register+0x6c/0x128
[ 0.029614] __platform_driver_register+0x50/0x60
[ 0.029623] fsl_edma_init+0x24/0x30
[ 0.029631] do_one_initcall+0x54/0x298
[ 0.029639] kernel_init_freeable+0x1ec/0x268
[ 0.029648] kernel_init+0x1c/0x118
[ 0.029655] ret_from_fork+0x10/0x1c
[ 0.029662] ---[ end trace e2cf5516fda822af ]---
[ 0.029799] iommu: Default domain type: Translated
[ 0.029862] vgaarb: loaded
[ 0.030000] SCSI subsystem initialized
[ 0.030088] usbcore: registered new interface driver usbfs
[ 0.030113] usbcore: registered new interface driver hub
[ 0.030144] usbcore: registered new device driver usb
[ 0.030277] imx-i2c 2000000.i2c: can't get pinctrl, bus recovery not supported
[ 0.030456] i2c i2c-0: IMX I2C adapter registered
[ 0.030531] imx-i2c 2030000.i2c: can't get pinctrl, bus recovery not supported
[ 0.030607] i2c i2c-1: IMX I2C adapter registered
[ 0.030679] imx-i2c 2040000.i2c: can't get pinctrl, bus recovery not supported
[ 0.030778] i2c i2c-2: IMX I2C adapter registered
[ 0.030861] pps_core: LinuxPPS API ver. 1 registered
[ 0.030868] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@xxxxxxxx>
[ 0.030882] PTP clock support registered
[ 0.031108] Advanced Linux Sound Architecture Driver Initialized.
[ 0.031461] clocksource: Switched to clocksource arch_sys_counter
[ 0.067525] VFS: Disk quotas dquot_6.6.0
[ 0.067570] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[ 0.070282] NET: Registered protocol family 2
[ 0.070514] tcp_listen_portaddr_hash hash table entries: 2048 (order: 3, 32768 bytes, linear)
[ 0.070538] TCP established hash table entries: 32768 (order: 6, 262144 bytes, linear)
[ 0.070630] TCP bind hash table entries: 32768 (order: 7, 524288 bytes, linear)
[ 0.070936] TCP: Hash tables configured (established 32768 bind 32768)
[ 0.071035] UDP hash table entries: 2048 (order: 4, 65536 bytes, linear)
[ 0.071063] UDP-Lite hash table entries: 2048 (order: 4, 65536 bytes, linear)
[ 0.071149] NET: Registered protocol family 1
[ 0.071169] PCI: CLS 0 bytes, default 64
[ 0.071528] hw perfevents: enabled with armv8_cortex_a72 PMU driver, 7 counters available
[ 0.071984] Initialise system trusted keyrings
[ 0.072111] workingset: timestamp_bits=44 max_order=20 bucket_order=0
[ 0.105492] Key type asymmetric registered
[ 0.105506] Asymmetric key parser 'x509' registered
[ 0.105533] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 248)
[ 0.105543] io scheduler mq-deadline registered
[ 0.105550] io scheduler kyber registered
[ 0.105982] pci-host-generic 1f0000000.pcie: host bridge /soc/pcie@1f0000000 ranges:
[ 0.106010] pci-host-generic 1f0000000.pcie: MEM 0x01f8000000..0x01f815ffff -> 0x0000000000
[ 0.106031] pci-host-generic 1f0000000.pcie: MEM 0x01f8160000..0x01f81cffff -> 0x0000000000
[ 0.106051] pci-host-generic 1f0000000.pcie: MEM 0x01f81d0000..0x01f81effff -> 0x0000000000
[ 0.106070] pci-host-generic 1f0000000.pcie: MEM 0x01f81f0000..0x01f820ffff -> 0x0000000000
[ 0.106090] pci-host-generic 1f0000000.pcie: MEM 0x01f8210000..0x01f822ffff -> 0x0000000000
[ 0.106109] pci-host-generic 1f0000000.pcie: MEM 0x01f8230000..0x01f824ffff -> 0x0000000000
[ 0.106123] pci-host-generic 1f0000000.pcie: MEM 0x01fc000000..0x01fc3fffff -> 0x0000000000
[ 0.106174] pci-host-generic 1f0000000.pcie: ECAM at [mem 0x1f0000000-0x1f00fffff] for [bus 00]
[ 0.106234] pci-host-generic 1f0000000.pcie: PCI host bridge to bus 0000:00
[ 0.106244] pci_bus 0000:00: root bus resource [bus 00]
[ 0.106253] pci_bus 0000:00: root bus resource [mem 0x1f8000000-0x1f815ffff] (bus address [0x00000000-0x0015ffff])
[ 0.106264] pci_bus 0000:00: root bus resource [mem 0x1f8160000-0x1f81cffff pref] (bus address [0x00000000-0x0006ffff])
[ 0.106275] pci_bus 0000:00: root bus resource [mem 0x1f81d0000-0x1f81effff] (bus address [0x00000000-0x0001ffff])
[ 0.106286] pci_bus 0000:00: root bus resource [mem 0x1f81f0000-0x1f820ffff pref] (bus address [0x00000000-0x0001ffff])
[ 0.106297] pci_bus 0000:00: root bus resource [mem 0x1f8210000-0x1f822ffff] (bus address [0x00000000-0x0001ffff])
[ 0.106308] pci_bus 0000:00: root bus resource [mem 0x1f8230000-0x1f824ffff pref] (bus address [0x00000000-0x0001ffff])
[ 0.106318] pci_bus 0000:00: root bus resource [mem 0x1fc000000-0x1fc3fffff] (bus address [0x00000000-0x003fffff])
[ 0.106340] pci 0000:00:00.0: [1957:e100] type 00 class 0x020001
[ 0.106382] pci 0000:00:00.0: BAR 0: [mem 0x1f8000000-0x1f803ffff 64bit] (from Enhanced Allocation, properties 0x0)
[ 0.106395] pci 0000:00:00.0: BAR 2: [mem 0x1f8160000-0x1f816ffff 64bit pref] (from Enhanced Allocation, properties 0x1)
[ 0.106407] pci 0000:00:00.0: VF BAR 0: [mem 0x1f81d0000-0x1f81dffff 64bit] (from Enhanced Allocation, properties 0x4)
[ 0.106419] pci 0000:00:00.0: VF BAR 2: [mem 0x1f81f0000-0x1f81fffff 64bit pref] (from Enhanced Allocation, properties 0x3)
[ 0.106444] pci 0000:00:00.0: PME# supported from D0 D3hot
[ 0.106458] pci 0000:00:00.0: VF(n) BAR0 space: [mem 0x1f81d0000-0x1f81effff 64bit] (contains BAR0 for 2 VFs)
[ 0.106469] pci 0000:00:00.0: VF(n) BAR2 space: [mem 0x1f81f0000-0x1f820ffff 64bit pref] (contains BAR2 for 2 VFs)
[ 0.106585] pci 0000:00:00.1: [1957:e100] type 00 class 0x020001
[ 0.106615] pci 0000:00:00.1: BAR 0: [mem 0x1f8040000-0x1f807ffff 64bit] (from Enhanced Allocation, properties 0x0)
[ 0.106627] pci 0000:00:00.1: BAR 2: [mem 0x1f8170000-0x1f817ffff 64bit pref] (from Enhanced Allocation, properties 0x1)
[ 0.106639] pci 0000:00:00.1: VF BAR 0: [mem 0x1f8210000-0x1f821ffff 64bit] (from Enhanced Allocation, properties 0x4)
[ 0.106650] pci 0000:00:00.1: VF BAR 2: [mem 0x1f8230000-0x1f823ffff 64bit pref] (from Enhanced Allocation, properties 0x3)
[ 0.106673] pci 0000:00:00.1: PME# supported from D0 D3hot
[ 0.106686] pci 0000:00:00.1: VF(n) BAR0 space: [mem 0x1f8210000-0x1f822ffff 64bit] (contains BAR0 for 2 VFs)
[ 0.106697] pci 0000:00:00.1: VF(n) BAR2 space: [mem 0x1f8230000-0x1f824ffff 64bit pref] (contains BAR2 for 2 VFs)
[ 0.106788] pci 0000:00:00.2: [1957:e100] type 00 class 0x020001
[ 0.106818] pci 0000:00:00.2: BAR 0: [mem 0x1f8080000-0x1f80bffff 64bit] (from Enhanced Allocation, properties 0x0)
[ 0.106830] pci 0000:00:00.2: BAR 2: [mem 0x1f8180000-0x1f818ffff 64bit pref] (from Enhanced Allocation, properties 0x1)
[ 0.106852] pci 0000:00:00.2: PME# supported from D0 D3hot
[ 0.106934] pci 0000:00:00.3: [1957:ee01] type 00 class 0x088001
[ 0.106967] pci 0000:00:00.3: BAR 0: [mem 0x1f8100000-0x1f811ffff 64bit] (from Enhanced Allocation, properties 0x0)
[ 0.106979] pci 0000:00:00.3: BAR 2: [mem 0x1f8190000-0x1f819ffff 64bit pref] (from Enhanced Allocation, properties 0x1)
[ 0.107000] pci 0000:00:00.3: PME# supported from D0 D3hot
[ 0.107086] pci 0000:00:00.4: [1957:ee02] type 00 class 0x088001
[ 0.107117] pci 0000:00:00.4: BAR 0: [mem 0x1f8120000-0x1f813ffff 64bit] (from Enhanced Allocation, properties 0x0)
[ 0.107129] pci 0000:00:00.4: BAR 2: [mem 0x1f81a0000-0x1f81affff 64bit pref] (from Enhanced Allocation, properties 0x1)
[ 0.107150] pci 0000:00:00.4: PME# supported from D0 D3hot
[ 0.107238] pci 0000:00:00.5: [1957:eef0] type 00 class 0x020801
[ 0.107268] pci 0000:00:00.5: BAR 0: [mem 0x1f8140000-0x1f815ffff 64bit] (from Enhanced Allocation, properties 0x0)
[ 0.107279] pci 0000:00:00.5: BAR 2: [mem 0x1f81b0000-0x1f81bffff 64bit pref] (from Enhanced Allocation, properties 0x1)
[ 0.107291] pci 0000:00:00.5: BAR 4: [mem 0x1fc000000-0x1fc3fffff 64bit] (from Enhanced Allocation, properties 0x0)
[ 0.107312] pci 0000:00:00.5: PME# supported from D0 D3hot
[ 0.107399] pci 0000:00:00.6: [1957:e100] type 00 class 0x020001
[ 0.107428] pci 0000:00:00.6: BAR 0: [mem 0x1f80c0000-0x1f80fffff 64bit] (from Enhanced Allocation, properties 0x0)
[ 0.107440] pci 0000:00:00.6: BAR 2: [mem 0x1f81c0000-0x1f81cffff 64bit pref] (from Enhanced Allocation, properties 0x1)
[ 0.107481] pci 0000:00:00.6: PME# supported from D0 D3hot
[ 0.108243] pci 0000:00:1f.0: [1957:e001] type 00 class 0x080700
[ 0.108289] OF: /soc/pcie@1f0000000: no msi-map translation for rid 0xf8 on (null)
[ 0.108599] layerscape-pcie 3400000.pcie: host bridge /soc/pcie@3400000 ranges:
[ 0.108624] layerscape-pcie 3400000.pcie: IO 0x8000010000..0x800001ffff -> 0x0000000000
[ 0.108641] layerscape-pcie 3400000.pcie: MEM 0x8040000000..0x807fffffff -> 0x0040000000
[ 0.108727] layerscape-pcie 3400000.pcie: PCI host bridge to bus 0001:00
[ 0.108737] pci_bus 0001:00: root bus resource [bus 00-ff]
[ 0.108745] pci_bus 0001:00: root bus resource [io 0x0000-0xffff]
[ 0.108754] pci_bus 0001:00: root bus resource [mem 0x8040000000-0x807fffffff] (bus address [0x40000000-0x7fffffff])
[ 0.108774] pci 0001:00:00.0: [1957:82c1] type 01 class 0x060400
[ 0.108835] pci 0001:00:00.0: supports D1 D2
[ 0.108842] pci 0001:00:00.0: PME# supported from D0 D1 D2 D3hot
[ 0.110259] pci_bus 0001:01: busn_res: [bus 01-ff] end is updated to 01
[ 0.110273] pci 0001:00:00.0: PCI bridge to [bus 01]
[ 0.110361] layerscape-pcie 3500000.pcie: host bridge /soc/pcie@3500000 ranges:
[ 0.110385] layerscape-pcie 3500000.pcie: IO 0x8800010000..0x880001ffff -> 0x0000000000
[ 0.110401] layerscape-pcie 3500000.pcie: MEM 0x8840000000..0x887fffffff -> 0x0040000000
[ 0.110478] layerscape-pcie 3500000.pcie: PCI host bridge to bus 0002:00
[ 0.110488] pci_bus 0002:00: root bus resource [bus 00-ff]
[ 0.110497] pci_bus 0002:00: root bus resource [io 0x10000-0x1ffff] (bus address [0x0000-0xffff])
[ 0.110508] pci_bus 0002:00: root bus resource [mem 0x8840000000-0x887fffffff] (bus address [0x40000000-0x7fffffff])
[ 0.110528] pci 0002:00:00.0: [1957:82c1] type 01 class 0x060400
[ 0.110586] pci 0002:00:00.0: supports D1 D2
[ 0.110593] pci 0002:00:00.0: PME# supported from D0 D1 D2 D3hot
[ 0.112016] pci_bus 0002:01: busn_res: [bus 01-ff] end is updated to 01
[ 0.112029] pci 0002:00:00.0: PCI bridge to [bus 01]
[ 0.112294] IPMI message handler: version 39.2
[ 0.112320] ipmi device interface
[ 0.112347] ipmi_si: IPMI System Interface driver
[ 0.112467] ipmi_si: Unable to find any System Interface(s)
[ 0.112817] ------------[ cut here ]------------
[ 0.112825] sup:5000000.iommu - con:8380000.dma-controller f:192 s:2
[ 0.112858] WARNING: CPU: 1 PID: 1 at drivers/base/core.c:993 __device_links_no_driver+0xf0/0xf8
[ 0.112866] Modules linked in:
[ 0.112876] CPU: 1 PID: 1 Comm: swapper/0 Tainted: G W 5.7.0-rc7-next-20200525-00001-ged5852b8c488-dirty #836
[ 0.112885] Hardware name: Kontron SMARC-sAL28 (Single PHY) on SMARC Eval 2.0 carrier (DT)
[ 0.112895] pstate: 60000005 (nZCv daif -PAN -UAO BTYPE=--)
[ 0.112903] pc : __device_links_no_driver+0xf0/0xf8
[ 0.112910] lr : __device_links_no_driver+0xf0/0xf8
[ 0.112915] sp : ffff80001118bbb0
[ 0.112920] x29: ffff80001118bbb0 x28: 0000000000000000
[ 0.112928] x27: 0000000000000006 x26: ffff800010cd04e8
[ 0.112936] x25: ffff800010d51960 x24: ffff00207a422010
[ 0.112943] x23: 0000000000000001 x22: ffff800010bd4698
[ 0.112950] x21: ffff00207a4220b0 x20: ffff00207a401300
[ 0.112957] x19: ffff00207a422090 x18: 0000000000000010
[ 0.112964] x17: 0000000000000001 x16: 0000000000000001
[ 0.112971] x15: ffffffffffffffff x14: 0720072007200720
[ 0.112978] x13: 0720072007200720 x12: 07200732073a0773
[ 0.112985] x11: 0720073207390731 x10: 073a076607200772
[ 0.112992] x9 : ffff800010091f64 x8 : 07720774076e076f
[ 0.112999] x7 : 000000000000012b x6 : ffff00207ac21f00
[ 0.113006] x5 : 0000000000000000 x4 : 0000000000000000
[ 0.113013] x3 : 00000000ffffffff x2 : ffff80001101b6c8
[ 0.113020] x1 : 3ee0a21bc55cf800 x0 : 0000000000000000
[ 0.113027] Call trace:
[ 0.113034] __device_links_no_driver+0xf0/0xf8
[ 0.113041] device_links_no_driver+0x74/0x90
[ 0.113049] really_probe+0x1ac/0x318
[ 0.113056] driver_probe_device+0x40/0x90
[ 0.113062] device_driver_attach+0x7c/0x88
[ 0.113069] __driver_attach+0x60/0xe8
[ 0.113076] bus_for_each_dev+0x7c/0xd0
[ 0.113082] driver_attach+0x2c/0x38
[ 0.113088] bus_add_driver+0x194/0x1f8
[ 0.113095] driver_register+0x6c/0x128
[ 0.113102] __platform_driver_register+0x50/0x60
[ 0.113110] fsl_qdma_driver_init+0x24/0x30
[ 0.113118] do_one_initcall+0x54/0x298
[ 0.113126] kernel_init_freeable+0x1ec/0x268
[ 0.113136] kernel_init+0x1c/0x118
[ 0.113142] ret_from_fork+0x10/0x1c
[ 0.113148] ---[ end trace e2cf5516fda822b0 ]---
[ 0.114250] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 0.114933] 21c0500.serial: ttyS0 at MMIO 0x21c0500 (irq = 16, base_baud = 12500000) is a 16550A
[ 2.251687] printk: console [ttyS0] enabled
[ 2.256149] 21c0600.serial: ttyS1 at MMIO 0x21c0600 (irq = 16, base_baud = 12500000) is a 16550A
[ 2.265257] 2270000.serial: ttyLP2 at MMIO 0x2270000 (irq = 17, base_baud = 12500000) is a FSL_LPUART
[ 2.275312] arm-smmu 5000000.iommu: probing hardware configuration...
[ 2.281800] arm-smmu 5000000.iommu: SMMUv2 with:
[ 2.286442] arm-smmu 5000000.iommu: stage 1 translation
[ 2.291787] arm-smmu 5000000.iommu: stage 2 translation
[ 2.297122] arm-smmu 5000000.iommu: nested translation
[ 2.302370] arm-smmu 5000000.iommu: stream matching with 128 register groups
[ 2.309538] arm-smmu 5000000.iommu: 64 context banks (0 stage-2 only)
[ 2.316102] arm-smmu 5000000.iommu: Supported page sizes: 0x61311000
[ 2.322573] arm-smmu 5000000.iommu: Stage-1: 48-bit VA -> 48-bit IPA
[ 2.329044] arm-smmu 5000000.iommu: Stage-2: 48-bit IPA -> 48-bit PA
[ 2.336017] at24 0-0050: supply vcc not found, using dummy regulator
[ 2.343189] at24 0-0050: 4096 byte 24c32 EEPROM, writable, 32 bytes/write
[ 2.350061] at24 1-0057: supply vcc not found, using dummy regulator
[ 2.357203] at24 1-0057: 8192 byte 24c64 EEPROM, writable, 32 bytes/write
[ 2.364071] at24 2-0050: supply vcc not found, using dummy regulator
[ 2.371205] at24 2-0050: 4096 byte 24c32 EEPROM, writable, 32 bytes/write
[ 2.378152] mpt3sas version 34.100.00.00 loaded
[ 2.383576] spi-nor spi1.0: mx25u3235f (4096 Kbytes)
[ 2.392502] spi-nor spi0.0: w25q32dw (4096 Kbytes)
[ 2.399966] 10 fixed-partitions partitions found on MTD device 20c0000.spi
[ 2.406887] Creating 10 MTD partitions on "20c0000.spi":
[ 2.412237] 0x000000000000-0x000000010000 : "rcw"
[ 2.423775] 0x000000010000-0x000000100000 : "failsafe bootloader"
[ 2.439768] 0x000000100000-0x000000140000 : "failsafe DP firmware"
[ 2.447799] 0x000000140000-0x0000001e0000 : "failsafe trusted firmware"
[ 2.455792] 0x0000001e0000-0x000000200000 : "reserved"
[ 2.463786] 0x000000200000-0x000000210000 : "configuration store"
[ 2.471793] 0x000000210000-0x000000300000 : "bootloader"
[ 2.479800] 0x000000300000-0x000000340000 : "DP firmware"
[ 2.487782] 0x000000340000-0x0000003e0000 : "trusted firmware"
[ 2.495791] 0x0000003e0000-0x000000400000 : "bootloader environment"
[ 2.504383] libphy: Fixed MDIO Bus: probed
[ 2.508665] mscc_felix 0000:00:00.5: Link attempted to 5000000.iommu 0x54
[ 2.515490] mscc_felix 0000:00:00.5: Link done to 5000000.iommu 0x54 2
[ 2.522081] mscc_felix 0000:00:00.5: Adding to iommu group 0
[ 2.527897] mscc_felix 0000:00:00.5: device is disabled, skipping
[ 2.534057] fsl_enetc 0000:00:00.0: Link attempted to 5000000.iommu 0x54
[ 2.540793] fsl_enetc 0000:00:00.0: Link done to 5000000.iommu 0x54 2
[ 2.547287] fsl_enetc 0000:00:00.0: Adding to iommu group 1
[ 2.659477] fsl_enetc 0000:00:00.0: enabling device (0400 -> 0402)
[ 2.665722] fsl_enetc 0000:00:00.0: no MAC address specified for SI1, using 0e:87:05:e9:99:e2
[ 2.674289] fsl_enetc 0000:00:00.0: no MAC address specified for SI2, using 32:0b:6b:3a:49:50
[ 2.683200] libphy: Freescale ENETC MDIO Bus: probed
[ 2.689766] fsl_enetc 0000:00:00.1: Link attempted to 5000000.iommu 0x54
[ 2.696523] fsl_enetc 0000:00:00.1: Link done to 5000000.iommu 0x54 2
[ 2.703027] fsl_enetc 0000:00:00.1: Adding to iommu group 2
[ 2.708717] fsl_enetc 0000:00:00.1: device is disabled, skipping
[ 2.714770] fsl_enetc 0000:00:00.2: Link attempted to 5000000.iommu 0x54
[ 2.721503] fsl_enetc 0000:00:00.2: Link done to 5000000.iommu 0x54 2
[ 2.727995] fsl_enetc 0000:00:00.2: Adding to iommu group 3
[ 2.733665] fsl_enetc 0000:00:00.2: device is disabled, skipping
[ 2.739717] fsl_enetc 0000:00:00.6: Link attempted to 5000000.iommu 0x54
[ 2.746450] fsl_enetc 0000:00:00.6: Link done to 5000000.iommu 0x54 2
[ 2.752940] fsl_enetc 0000:00:00.6: Adding to iommu group 4
[ 2.758606] fsl_enetc 0000:00:00.6: device is disabled, skipping
[ 2.764687] fsl_enetc_mdio 0000:00:00.3: Link attempted to 5000000.iommu 0x54
[ 2.771858] fsl_enetc_mdio 0000:00:00.3: Link done to 5000000.iommu 0x54 2
[ 2.778786] fsl_enetc_mdio 0000:00:00.3: Adding to iommu group 5
[ 2.891472] fsl_enetc_mdio 0000:00:00.3: enabling device (0400 -> 0402)
[ 2.898295] libphy: FSL PCIe IE Central MDIO Bus: probed
[ 2.903665] igb: Intel(R) Gigabit Ethernet Network Driver - version 5.6.0-k
[ 2.910659] igb: Copyright (c) 2007-2014 Intel Corporation.
[ 2.916345] dwc3 3100000.usb: Link attempted to 5000000.iommu 0x54
[ 2.922556] dwc3 3100000.usb: Link done to 5000000.iommu 0x44 2
[ 2.928513] dwc3 3100000.usb: Adding to iommu group 6
[ 2.933887] dwc3 3110000.usb: Link attempted to 5000000.iommu 0x54
[ 2.940101] dwc3 3110000.usb: Link done to 5000000.iommu 0x44 2
[ 2.946065] dwc3 3110000.usb: Adding to iommu group 7
[ 2.951512] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 2.958069] ehci-pci: EHCI PCI platform driver
[ 2.962698] xhci-hcd xhci-hcd.0.auto: xHCI Host Controller
[ 2.968219] xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 1
[ 2.976061] xhci-hcd xhci-hcd.0.auto: hcc params 0x0220f66d hci version 0x100 quirks 0x0000000002010010
[ 2.985516] xhci-hcd xhci-hcd.0.auto: irq 21, io mem 0x03100000
[ 2.991841] hub 1-0:1.0: USB hub found
[ 2.995623] hub 1-0:1.0: 1 port detected
[ 2.999673] xhci-hcd xhci-hcd.0.auto: xHCI Host Controller
[ 3.005189] xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 2
[ 3.012885] xhci-hcd xhci-hcd.0.auto: Host supports USB 3.0 SuperSpeed
[ 3.019477] usb usb2: We don't know the algorithms for LPM for this host, disabling LPM.
[ 3.027812] hub 2-0:1.0: USB hub found
[ 3.031592] hub 2-0:1.0: 1 port detected
[ 3.035670] xhci-hcd xhci-hcd.1.auto: xHCI Host Controller
[ 3.041188] xhci-hcd xhci-hcd.1.auto: new USB bus registered, assigned bus number 3
[ 3.049019] xhci-hcd xhci-hcd.1.auto: hcc params 0x0220f66d hci version 0x100 quirks 0x0000000002010010
[ 3.058478] xhci-hcd xhci-hcd.1.auto: irq 22, io mem 0x03110000
[ 3.064739] hub 3-0:1.0: USB hub found
[ 3.068519] hub 3-0:1.0: 1 port detected
[ 3.072559] xhci-hcd xhci-hcd.1.auto: xHCI Host Controller
[ 3.078075] xhci-hcd xhci-hcd.1.auto: new USB bus registered, assigned bus number 4
[ 3.085772] xhci-hcd xhci-hcd.1.auto: Host supports USB 3.0 SuperSpeed
[ 3.092357] usb usb4: We don't know the algorithms for LPM for this host, disabling LPM.
[ 3.100693] hub 4-0:1.0: USB hub found
[ 3.104556] hub 4-0:1.0: 1 port detected
[ 3.108685] usbcore: registered new interface driver usb-storage
[ 3.115477] rtc-rv8803 0-0032: Voltage low, temperature compensation stopped.
[ 3.122652] rtc-rv8803 0-0032: Voltage low, data loss detected.
[ 3.129672] rtc-rv8803 0-0032: Voltage low, data is invalid.
[ 3.135424] rtc-rv8803 0-0032: registered as rtc0
[ 3.140826] rtc-rv8803 0-0032: Voltage low, data is invalid.
[ 3.146516] rtc-rv8803 0-0032: hctosys: unable to read the hardware clock
[ 3.153411] i2c /dev entries driver
[ 3.162811] sp805-wdt c000000.watchdog: registration successful
[ 3.168849] sp805-wdt c010000.watchdog: registration successful
[ 3.175345] qoriq-cpufreq qoriq-cpufreq: Freescale QorIQ CPU frequency scaling driver
[ 3.183972] sdhci: Secure Digital Host Controller Interface driver
[ 3.190232] sdhci: Copyright(c) Pierre Ossman
[ 3.194656] sdhci-pltfm: SDHCI platform and OF driver helper
[ 3.201034] sdhci-esdhc 2140000.mmc: Link attempted to 5000000.iommu 0x54
[ 3.207913] sdhci-esdhc 2140000.mmc: Link done to 5000000.iommu 0x44 2
[ 3.214728] sdhci-esdhc 2140000.mmc: Adding to iommu group 8
[ 3.247591] mmc0: SDHCI controller on 2140000.mmc [2140000.mmc] using ADMA
[ 3.254738] sdhci-esdhc 2150000.mmc: Link attempted to 5000000.iommu 0x54
[ 3.261670] sdhci-esdhc 2150000.mmc: Link done to 5000000.iommu 0x44 2
[ 3.268488] sdhci-esdhc 2150000.mmc: Adding to iommu group 9
[ 3.302025] mmc1: SDHCI controller on 2150000.mmc [2150000.mmc] using ADMA
[ 3.310942] usbcore: registered new interface driver usbhid
[ 3.316639] usbhid: USB HID core driver
[ 3.321829] wm8904 2-001a: supply DCVDD not found, using dummy regulator
[ 3.328964] wm8904 2-001a: supply DBVDD not found, using dummy regulator
[ 3.336051] wm8904 2-001a: supply AVDD not found, using dummy regulator
[ 3.343070] wm8904 2-001a: supply CPVDD not found, using dummy regulator
[ 3.350290] wm8904 2-001a: supply MICVDD not found, using dummy regulator
[ 3.360310] wm8904 2-001a: revision A
[ 3.373907] ------------[ cut here ]------------
[ 3.378655] sup:22c0000.dma-controller - con:f140000.audio-controller f:192 s:2
[ 3.386461] WARNING: CPU: 0 PID: 1 at drivers/base/core.c:993 __device_links_no_driver+0xf0/0xf8
[ 3.395312] Modules linked in:
[ 3.398406] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 5.7.0-rc7-next-20200525-00001-ged5852b8c488-dirty #836
[ 3.409698] Hardware name: Kontron SMARC-sAL28 (Single PHY) on SMARC Eval 2.0 carrier (DT)
[ 3.418027] pstate: 60000005 (nZCv daif -PAN -UAO BTYPE=--)
[ 3.419539] usb 3-1: new high-speed USB device number 2 using xhci-hcd
[ 3.423644] pc : __device_links_no_driver+0xf0/0xf8
[ 3.423655] lr : __device_links_no_driver+0xf0/0xf8
[ 3.423666] sp : ffff80001118bbb0
[ 3.443376] x29: ffff80001118bbb0 x28: 0000000000000000
[ 3.448734] x27: 0000000000000006 x26: ffff800010cd04e8
[ 3.454090] x25: ffff800010d51960 x24: ffff00207a422c10
[ 3.459444] x23: 0000000000000001 x22: ffff800010bd4698
[ 3.464797] x21: ffff00207a422cb0 x20: ffff00207a401380
[ 3.470150] x19: ffff00207a422c90 x18: 0000000000000001
[ 3.475502] x17: 0000000000000000 x16: 0000000000000003
[ 3.480855] x15: ffffffffffffffff x14: ffff800010ff9948
[ 3.486208] x13: ffff8000112cbe08 x12: ffff8000112cbdfa
[ 3.491560] x11: 0720072007200720 x10: 00000000000009f0
[ 3.496914] x9 : ffff800010091f64 x8 : ffff00207ae50a50
[ 3.502266] x7 : 0000000000000000 x6 : 0000000000000001
[ 3.507618] x5 : 0000000000012890 x4 : 0000000000000000
[ 3.512970] x3 : ffff80206ea0e000 x2 : ffff80001101b6c8
[ 3.518322] x1 : 3ee0a21bc55cf800 x0 : 0000000000000000
[ 3.523676] Call trace:
[ 3.526148] __device_links_no_driver+0xf0/0xf8
[ 3.530715] device_links_no_driver+0x74/0x90
[ 3.535110] really_probe+0x1ac/0x318
[ 3.538805] driver_probe_device+0x40/0x90
[ 3.542936] device_driver_attach+0x7c/0x88
[ 3.547153] __driver_attach+0x60/0xe8
[ 3.550934] bus_for_each_dev+0x7c/0xd0
[ 3.554803] driver_attach+0x2c/0x38
[ 3.558409] bus_add_driver+0x194/0x1f8
[ 3.562278] driver_register+0x6c/0x128
[ 3.566151] __platform_driver_register+0x50/0x60
[ 3.570897] fsl_sai_driver_init+0x24/0x30
[ 3.575028] do_one_initcall+0x54/0x298
[ 3.578902] kernel_init_freeable+0x1ec/0x268
[ 3.583300] kernel_init+0x1c/0x118
[ 3.586819] ret_from_fork+0x10/0x1c
[ 3.590421] ---[ end trace e2cf5516fda822b1 ]---
[ 3.596351] ------------[ cut here ]------------
[ 3.601142] sup:22c0000.dma-controller - con:f150000.audio-controller f:192 s:2
[ 3.608880] WARNING: CPU: 0 PID: 1 at drivers/base/core.c:993 __device_links_no_driver+0xf0/0xf8
[ 3.617729] Modules linked in:
[ 3.620818] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 5.7.0-rc7-next-20200525-00001-ged5852b8c488-dirty #836
[ 3.632109] Hardware name: Kontron SMARC-sAL28 (Single PHY) on SMARC Eval 2.0 carrier (DT)
[ 3.640437] pstate: 60000005 (nZCv daif -PAN -UAO BTYPE=--)
[ 3.646052] pc : __device_links_no_driver+0xf0/0xf8
[ 3.650966] lr : __device_links_no_driver+0xf0/0xf8
[ 3.655876] sp : ffff80001118bbb0
[ 3.659214] x29: ffff80001118bbb0 x28: 0000000000000000
[ 3.664568] x27: 0000000000000006 x26: ffff800010cd04e8
[ 3.669921] x25: ffff800010d51960 x24: ffff00207a423010
[ 3.675273] x23: 0000000000000001 x22: ffff800010bd4698
[ 3.680625] x21: ffff00207a4230b0 x20: ffff00207a401400
[ 3.685977] x19: ffff00207a423090 x18: 0000000000000010
[ 3.691329] x17: 0000000000000000 x16: 0000000000000003
[ 3.696681] x15: ffffffffffffffff x14: 0720072007200720
[ 3.702034] x13: 0720072007200720 x12: 0720072007200720
[ 3.707388] x11: 0720072007200720 x10: 00000000000009f0
[ 3.712740] x9 : ffff800010091f64 x8 : ffff00207ae50a50
[ 3.718092] x7 : 00000000ffffffff x6 : 0000000000000001
[ 3.723445] x5 : 0000000000026318 x4 : 0000000000000000
[ 3.728797] x3 : ffff80206ea0e000 x2 : ffff80001101b6c8
[ 3.734148] x1 : 3ee0a21bc55cf800 x0 : 0000000000000000
[ 3.739501] Call trace:
[ 3.741971] __device_links_no_driver+0xf0/0xf8
[ 3.746536] device_links_no_driver+0x74/0x90
[ 3.750931] really_probe+0x1ac/0x318
[ 3.754624] driver_probe_device+0x40/0x90
[ 3.758755] device_driver_attach+0x7c/0x88
[ 3.762972] __driver_attach+0x60/0xe8
[ 3.766753] bus_for_each_dev+0x7c/0xd0
[ 3.770619] driver_attach+0x2c/0x38
[ 3.774225] bus_add_driver+0x194/0x1f8
[ 3.778094] driver_register+0x6c/0x128
[ 3.781966] __platform_driver_register+0x50/0x60
[ 3.786711] fsl_sai_driver_init+0x24/0x30
[ 3.790841] do_one_initcall+0x54/0x298
[ 3.794714] kernel_init_freeable+0x1ec/0x268
[ 3.799110] kernel_init+0x1c/0x118
[ 3.802630] ret_from_fork+0x10/0x1c
[ 3.806232] ---[ end trace e2cf5516fda822b2 ]---
[ 3.814231] NET: Registered protocol family 10
[ 3.820479] Segment Routing with IPv6
[ 3.824834] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
[ 3.831872] NET: Registered protocol family 17
[ 3.836563] Bridge firewalling registered
[ 3.840986] 8021q: 802.1Q VLAN Support v1.8
[ 3.845354] Key type dns_resolver registered
[ 3.850170] registered taskstats version 1
[ 3.854411] Loading compiled-in X.509 certificates
[ 3.865482] fsl-edma 22c0000.dma-controller: Link attempted to 5000000.iommu 0x54
[ 3.870243] mmc1: new HS400 MMC card at address 0001
[ 3.873227] fsl-edma 22c0000.dma-controller: Link done to 5000000.iommu 0x44 2
[ 3.886624] fsl-edma 22c0000.dma-controller: Adding to iommu group 10
[ 3.893881] mmcblk1: mmc1:0001 S0J58X 29.6 GiB
[ 3.897220] pcieport 0001:00:00.0: Link attempted to 5000000.iommu 0x54
[ 3.899125] mmcblk1boot0: mmc1:0001 S0J58X partition 1 31.5 MiB
[ 3.906282] pcieport 0001:00:00.0: Link done to 5000000.iommu 0x54 2
[ 3.911856] mmcblk1boot1: mmc1:0001 S0J58X partition 2 31.5 MiB
[ 3.918769] pcieport 0001:00:00.0: Adding to iommu group 11
[ 3.923955] mmcblk1rpmb: mmc1:0001 S0J58X partition 3 4.00 MiB, chardev (245:0)
[ 3.931177] pcieport 0001:00:00.0: AER: enabled with IRQ 24
[ 3.940995] mmcblk1: p1 p2
[ 3.944231] pcieport 0002:00:00.0: Link attempted to 5000000.iommu 0x54
[ 3.952783] pcieport 0002:00:00.0: Link done to 5000000.iommu 0x54 2
[ 3.960461] pcieport 0002:00:00.0: Adding to iommu group 12
[ 3.967139] mmc0: Tuning failed, falling back to fixed sampling clock
[ 3.973690] mmc0: tuning execution failed: -11
[ 3.978715] mmc0: error -11 whilst initialising SD card
[ 3.986303] pcieport 0002:00:00.0: AER: enabled with IRQ 26
[ 3.992238] hub 3-1:1.0: USB hub found
[ 3.996205] hub 3-1:1.0: 7 ports detected
[ 4.000757] fsl-qdma 8380000.dma-controller: Link attempted to 5000000.iommu 0x54
[ 4.008679] fsl-qdma 8380000.dma-controller: Link done to 5000000.iommu 0x44 2
[ 4.016152] fsl-qdma 8380000.dma-controller: Adding to iommu group 13
[ 4.022739] random: fast init done
[ 4.031806] asoc-simple-card sound: wm8904-hifi <-> f150000.audio-controller mapping ok
[ 4.042202] asoc-simple-card sound: wm8904-hifi <-> f140000.audio-controller mapping ok
[ 4.050453] asoc-simple-card sound: ASoC: no DMI vendor name!
[ 4.060914] irq: no irq domain found for sl28cpld@4a !
[ 4.066219] irq: no irq domain found for sl28cpld@4a !
[ 4.071577] gpio-keys buttons0: Found button without gpio or irq
[ 4.077719] gpio-keys: probe of buttons0 failed with error -22
[ 4.083992] ALSA device list:
[ 4.086990] #0: f150000.audio-controller-wm8904-hifi
[ 4.097062] EXT4-fs (mmcblk1p2): INFO: recovery required on readonly filesystem
[ 4.104524] EXT4-fs (mmcblk1p2): write access will be enabled during recovery
[ 4.129244] EXT4-fs (mmcblk1p2): recovery complete
[ 4.136609] EXT4-fs (mmcblk1p2): mounted filesystem with ordered data mode. Opts: (null)
[ 4.145056] VFS: Mounted root (ext4 filesystem) readonly on device 179:2.
[ 4.152637] devtmpfs: mounted
[ 4.165237] mmc0: new ultra high speed SDR104 SDHC card at address 1234
[ 4.167777] Freeing unused kernel memory: 3200K
[ 4.176808] Run /sbin/init as init process
[ 4.180973] with arguments:
[ 4.181560] mmcblk0: mmc0:1234 SA16G 14.4 GiB
[ 4.183988] /sbin/init
[ 4.183994] with environment:
[ 4.184003] HOME=/
[ 4.197079] TERM=linux
[ 4.197109] mmcblk0: p1
[ 4.250330] EXT4-fs (mmcblk1p2): re-mounted. Opts: (null)
[ 4.343586] usb 3-1.6: new full-speed USB device number 3 using xhci-hcd
[ 4.426118] udevd[128]: starting version 3.2.8
[ 4.432917] random: udevd: uninitialized urandom read (16 bytes read)
[ 4.440809] random: udevd: uninitialized urandom read (16 bytes read)
[ 4.447516] random: udevd: uninitialized urandom read (16 bytes read)
[ 4.459626] udevd[128]: specified group 'kvm' unknown
[ 4.487594] udevd[129]: starting eudev-3.2.8
[ 6.745883] fsl_enetc 0000:00:00.0 gbe0: renamed from eth0
[ 9.579015] urandom_read: 3 callbacks suppressed
[ 9.579028] random: dd: uninitialized urandom read (512 bytes read)
[ 9.740749] Qualcomm Atheros AR8031/AR8033 0000:00:00.0:05: attached PHY driver [Qualcomm Atheros AR8031/AR8033] (mii_bus:phy_addr=0000:00:00.0:05, irq=POLL)
[ 9.773881] fsl_enetc 0000:00:00.0 gbe0: Link is Down
[ 9.833227] random: dropbear: uninitialized urandom read (32 bytes read)
[ 11.812081] fsl_enetc 0000:00:00.0 gbe0: Link is Up - 10Mbps/Full - flow control off
[ 11.819966] IPv6: ADDRCONF(NETDEV_CHANGE): gbe0: link becomes ready
[ 12.835873] fsl_enetc 0000:00:00.0 gbe0: Link is Down
[ 14.884068] fsl_enetc 0000:00:00.0 gbe0: Link is Up - 1Gbps/Full - flow control off


-michael