Re: Hammerfall (hdsp) initialization problem

[Takashi Iwai <tiwai@suse.de>]

At Tue, 27 Jul 2004 12:07:06 -0400,
Jean-Marc Valin wrote:
> 
> > The problem is that you have to know the PCI pointer to call
> > dma_alloc_coherent() correctly beforehand.  Otherwise you'll get only
> > ZONE_DMA under 16MB region.
> 
> Still, there must be *something* that can be done, no? What are other
> OSs doing about that? I mean, the card manual doesn't say "if you insert
> this card after boot, it won't work", so I don't see why ALSA
> fundamentally couldn't support hot-plugging cards.

Of course hotplug is supported (how can you read above in such a way?)
The question is only the memory preallocation for the cardbus device.

hdsp driver and/or memalloc.c should be changed to handle properly the
buffer preservation after replugging.  Most likely the pci device
pointer is changed after replug.  Can anyone check whether pci_dev
pointer is changed at each time?


Takashi


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