DMA problem in net2280?

Dave:

While doing some testing today, I found that net2280 wasn't working
right.  When DMA is enabled, the bulk-OUT data buffers presented to
g_file_storage contain nothing but 0x6b bytes.  With DMA disabled
everything works okay, so this definitely has to be something wrong in
the controller driver.

I haven't noticed any recent changes that would cause this, and in fact 
I tested net2280 a few weeks ago (can't remember exactly when) with no 
problems.  So maybe this was caused by a change elsewhere, like in the 
DMA API.  Regardless, it needs to be fixed.

Have you seen this, or can you confirm it?

Alan Stern


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