snd-rme9652_mem and the H-DSP

[Paul Davis <pbd@op.net>]

both the hammerfall and hammerfall-dsp require exactly the same kind
of memory allocation. the snd-rme9652_mem module, which allocates
a contiguous chunk of about 1.2MB of physical RAM, uses the "driver
index" to identify which snd-card is using a given buffer. this means
that if we try to use both a hammerfall and a hammerfall-dsp, things
don't work: both drivers pass "driver index" = 0 to the memory
module, and the second try (whatever it is) concludes that it already
has buffers allocated.

i propose using the card->number value instead, so that the numbers are
unique across all driver modules. 

the only other option i can see is to duplicate the code in
snd-rme9652_mem, which seems really dumb.

i also propose renaming the module to snd-hammerfall_mem to clearly
indicate its generic status, and moving it into its own directory. it
will be built if either CONFIG_SND_CARD_RME9652 and/or
CONFIG_SND_CARD_HDSP are defined.

let me know if this sounds like the right solution, or if you have a
better one.

--p




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