Re: pci_alloc_consistent usage

[Christoph Hellwig <hch@infradead.org>]

On Tue, May 27, 2003 at 07:07:49PM +0900, Atsushi Nemoto wrote:
> >>>>> On Tue, 27 May 2003 11:17:40 +0200, Ralf Baechle <ralf@linux-mips.org> 
> >>>>> said:
> ralf> Use the value returned by pci_alloc_consistent in *dma_handle
> ralf> instead of trying to do any conversions with of
> ralf> pci_alloc_consistent's return value.
> 
> How about virt_to_page()?
> 
> Currently, many sound drivers (including ALSA) pass a
> pci_alloc_consistent's return value to virt_to_page.

You are not allow to do so.  Any driver doing this is broken.