Over at the prism54 project http://prism54.org , work has
just started on adapting the driver for the USB devices.
All of these Prism GT chipsets require a firmware to be loaded.
This , of course, is done by the kernel firmware loader routine request_firmware.
Now the curiousity; if we use a pointer to the data area as returned
from request_firmware, it doesn't work. If, however, we use the stack
(or a kmalloc'ed area) and copy over and pass the stack (or km'ed area)
address, then it works.
Only thing I could find is that request_firmware allocates the data area
using vmalloc. Why is this a problem ?
Thanks.
Margit
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