Re: [PATCH] generic device DMA (dma_pool update)

Andrew Morton
2002-12-31T23:19:30Z

David Brownell wrote:
>
> void *mempool_alloc_td (int mem_flags, void *pool)
> {
> struct td *td;
> dma_addr_t dma;
>
> td = dma_pool_alloc (pool, mem_flags, &dma);
> if (!td)
> return td;
> td->td_dma = dma; /* feed to the hardware */
> ... plus other init
> return td;
> }

The existing mempool code can be used to implement this, I believe. The
pool->alloc callback is passed an opaque void *, and it returns
a void * which can point at any old composite caller-defined blob.