about sound/core/pcm_lib.c:1997: capture read error (DMA or IRQ trouble?)

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Dear ALL:


                after long time amr-wb codec loopback test. (above 90 hours)
                I got the following kernel message.  it comes from
snd_pcm_lib_read1()
                function. 
                ALSA sound/core/pcm_lib.c:1997: capture read error (DMA or IRQ
trouble?)
                ALSA sound/core/pcm_lib.c:1997: capture read error (DMA or IRQ
trouble?)
                ALSA sound/core/pcm_lib.c:1997: capture read error (DMA or IRQ
trouble?)
                ALSA sound/core/pcm_lib.c:1997: capture read error (DMA or IRQ
trouble?)
                ALSA sound/core/pcm_lib.c:1997: capture read error (DMA or IRQ
trouble?)
                ALSA sound/core/pcm_lib.c:1997: capture read error (DMA or IRQ
trouble?)

                What should I do? My platform is ARM926, with Kernel 2.6.19.2
                ALSA version is 1.0.13.

Best Regards,
Akio

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