irq16:pcm0 consumes much of processors time on SMP

[muff muff]

Hello list,

I have problem in handling interrupts
of my pcm0 device.

It consumes about 30% processors time continuously and it doesn't
matter if I compile sound driver directly to the kernel or as a
mudule. In the time of messurement I didnot play any sound or use
this device for 
playing music. It is right after the machine boots.

The top commands shows:

53 root -60 -179 OK 12K *Giant 0  28:29 36.33% 36.33% irq16: pcm0

Almost all time it is in *Giant state.

I have dual Pentium III 450Mhz and ofcourse
kernel compiled with SMP and APIC_IO.

Thank you for any suggestion.

Regards,

Muff

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