[Prism54-devel] prism54-usb firmware loading
Margit Schubert-While
margitsw at t-online.de
Fri Jun 11 14:24:07 UTC 2004
Helmar scribeth :
> I finally came to the conclusion that the problem may be related
> to the userspace/kernelspace issue. I added a "memcpy" to fetch
> chunks of the firmware into local memory of prism54u before it is
> sent via usb_bulk_msg.
Interesting. fw_entry->data is definitely in kernel space. Only thing that
may affect
things is that the firmware loader allocates this with "vmalloc" and not
"kmalloc".
AFAIK that means that the allocated area is not necessarily contiguous.
Feyd ?
Margit
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