Hi, On 28/11/2013 02:20, Bo Shen wrote:
Hi Richard,
On 11/27/2013 06:09 PM, Richard Genoud wrote:
[Snip]
dma dma0chan4: prep_dma_cyclic: TO DEVICE buf@0x27950000 - 8 (65536/8192) dma dma0chan4: scanned 1 descriptors on freelist dma dma0chan4: scanned 1 descriptors on freelist dma dma0chan4: scanned 1 descriptors on freelist dma dma0chan4: scanned 1 descriptors on freelist dma dma0chan4: scanned 1 descriptors on freelist dma dma0chan4: scanned 1 descriptors on freelist dma dma0chan4: scanned 1 descriptors on freelist dma dma0chan4: scanned 1 descriptors on freelist dma dma0chan4: tx_submit: started 2 dma dma0chan4: channel 4 : imr = 0xff00ff, chsr = 0xff0000 dma dma0chan4: channel: s0x27b3eb20 d0xf0010024 ctrl0x91000590:0x20200010 cfg0x100022dd l0x27981d10 dma dma0chan4: channel 4 : imr = 0xff00ff, chsr = 0xff0010 dma dma0chan4: channel: s0x27950010 d0xf0010024 ctrl0x11000008:0x20200010 cfg0x100022dd l0x27a58344 dma dma0chan4: issue_pending [ blocks here forever (or at least a looooong time) ]
How can I reproduce this issue? Please help provide detail information about your operation.
On my side, I just do: --->8--- while true; do insmod snd-soc-atmel-pcm-dma.ko && insmod snd-soc-atmel_ssc_dai.ko && insmod snd-soc-wm8731.ko && insmod snd-soc-sam9x5-wm8731.ko; amixer cset numid=14,iface=MIXER,name='Output Mixer HiFi Playback Switch' on; aplay sample.wav; rmmod snd-soc-sam9x5-wm8731.ko && rmmod snd-soc-wm8731.ko && rmmod snd-soc-atmel_ssc_dai.ko && rmmod snd-soc-atmel-pcm-dma.ko; done ---8<---
It works well on my side on at91sam9g35ek board, based on v3.13-rc1
Ok, it's working with your script.
I was doing: modprobe snd-soc-wm8731 modprobe snd-soc-sam9x5-wm8731 amixer cset numid=14,iface=MIXER,name='Output Mixer HiFi Playback Switch' on aplay sample.wav # works ok rmmod snd-soc-sam9x5-wm8731 insmod /lib/modules/3.13.0-rc1/kernel/sound/soc/atmel/snd-soc-sam9x5-wm8731.ko amixer cset numid=14,iface=MIXER,name='Output Mixer HiFi Playback Switch' on aplay sample.wav # error aplay: pcm_write:1737: write error: Input/output error
=> I wasn't unloading snd-soc-wm8731
Thanks for your time !
Richard.