uaudio patch, configurable buffer size

Alexander Leidinger Alexander at
Sun Mar 6 15:27:24 GMT 2005

On Sat, 5 Mar 2005 17:40:05 -0500
Mathew Kanner <mat at> wrote:

> Hi All,
> 	I couldn't use my usb device because the default buffer size
> (16*1024 bytes) was too much to be allocated (dma changes that
> happened a while ago).  The following is a patch to make it a tunable:

There's an open PR about it. It changes the buffer size. AFAIR it also
talks about changing the value of a parameter to a busdma call instead.
I've patched the busdma call and now the device is detected here (but I
don't hear any output...).

I think you should add another set of validation code: The buffer size
is divided by 2 in the code, so I think it should at least print a
warning if "buffsize % 2 != 0".

> 	Would love to hear if this works for anybody else,

I haven't tried it yet, maybe I get time to test it in the next days.

Can you also please have a look at PR usb/78028? It adds some info to


              To boldly go where I surely don't belong.                       Alexander @
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