Two observed problems on a dreamplug:
1. once the audio device gets touched, the kernel emits a continuous spew of "delay: estimated X, actual Y" errors; a thread on alsa-devel (
http://mailman.alsa-project.org/pipermail/alsa-devel/2012-April/051345.html) touched on the introduction of the message without resolution.
2. Null dereference in ap8xxxx; hangs the boot for a while, might make wireless unusable (haven't tried) but otherwise nonfatal:
Jun 6 02:28:03 plug kernel: uap_probe: vendor=0x02DF device=0x9104 class=0 function=1
Jun 6 02:28:03 plug kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000010
Jun 6 02:28:03 plug kernel: pgd = c0004000
Jun 6 02:28:03 plug kernel: [00000010] *pgd=00000000
Jun 6 02:28:03 plug kernel: Internal error: Oops: 17 [#1] PREEMPT
Jun 6 02:28:03 plug kernel: Modules linked in: uap8xxx(+) snd_usb_audio snd_pcm snd_page_alloc snd_hwdep snd_usbmidi_lib snd_seq_midi snd_rawmidi
snd_seq_midi_event snd_seq snd_timer snd_seq_device snd btmrvl_sdio btmrvl soundcore libertas_sdio libertas cdc_acm cfg80211 bluetooth rfkill raid1 md_mod uas sata_mv [last unloaded: scsi_wait_scan]
Jun 6 02:28:03 plug kernel: CPU: 0 Not tainted (3.3.7 #5)
Jun 6 02:28:03 plug kernel: PC is at uap_interrupt+0x30/0xbc [uap8xxx]
Jun 6 02:28:03 plug kernel: LR is at sbi_interrupt+0x188/0x1e4 [uap8xxx]
Jun 6 02:28:03 plug kernel: pc : [<bf17a030>] lr : [<bf17b220>] psr: 40000013
Jun 6 02:28:03 plug kernel: sp : dec37f78 ip : de8ec044 fp : 00000000
Jun 6 02:28:03 plug kernel: r10: 00000000 r9 : 00000000 r8 : 00000000
Jun 6 02:28:03 plug kernel: r7 : 00000001 r6 : dfac0000 r5 : 00000000 r4 : df9ac2e0
Jun 6 02:28:03 plug kernel: r3 : 00000000 r2 : dec37f80 r1 : 00000000 r0 : df9ac2e0
Jun 6 02:28:03 plug kernel: Flags: nZcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
Jun 6 02:28:03 plug kernel: Control: 0005397f Table: 1f86c000 DAC: 00000017
Jun 6 02:28:03 plug kernel: Process ksdioirqd/mmc0 (pid: 1088, stack limit = 0xdec36270)
Jun 6 02:28:03 plug kernel: Stack: (0xdec37f78 to 0xdec38000)
Jun 6 02:28:03 plug kernel: 7f60: df9ac2e0 bf17b220
Jun 6 02:28:03 plug kernel: 7f80: def70600 00000000 decb9800 7fffffff def87c00 c02eefd0 de8edd48 c02eef5c
Jun 6 02:28:03 plug kernel: 7fa0: 00000001 00000000 00000000 de8edd38 decb9800 c02eef5c 00000013 00000000
Jun 6 02:28:03 plug kernel: 7fc0: 00000000 00000000 00000000 c00328d4 00000000 00000000 decb9800 00000000
Jun 6 02:28:03 plug kernel: 7fe0: dec37fe0 dec37fe0 de8edd38 c0032850 c00095a4 c00095a4 2a637364 692a7064
Jun 6 02:28:03 plug kernel: [<bf17a030>] (uap_interrupt+0x30/0xbc [uap8xxx]) from [<bf17b220>] (sbi_interrupt+0x188/0x1e4 [uap8xxx])
Jun 6 02:28:03 plug kernel: [<bf17b220>] (sbi_interrupt+0x188/0x1e4 [uap8xxx]) from [<c02eefd0>] (sdio_irq_thread+0x74/0x234)
Jun 6 02:28:03 plug kernel: [<c02eefd0>] (sdio_irq_thread+0x74/0x234) from [<c00328d4>] (kthread+0x84/0x90)
Jun 6 02:28:03 plug kernel: [<c00328d4>] (kthread+0x84/0x90) from [<c00095a4>] (kernel_thread_exit+0x0/0x8)
Jun 6 02:28:03 plug kernel: Code: e59f2080 e59f3080 eb49c41e e5943004 (e5932010)
Jun 6 02:28:03 plug kernel: ---[ end trace 7e28f11f127572ed ]---