From: Michal Schmidt <mschm...@redhat.com>
Date: Fri, 26 Jun 2015 17:50:00 +0200
> With CONFIG_DMA_API_DEBUG=y bnx2x triggers the error "DMA-API: device
> driver frees DMA memory with wrong function".
> On archs where PAGE_SIZE > SGE_PAGE_SIZE it also triggers "DMA-API:
> device driver frees DMA memory with different size".
>
> Fix this by making the mapping and unmapping symmetric:
> - Do not map the whole pool page at once. Instead map the
> SGE_PAGE_SIZE-sized pieces individually, so they can be unmapped in
> the same manner.
> - What's mapped using dma_map_page() must be unmapped using
> dma_unmap_page().
>
> Tested on ppc64.
>
> Fixes: 4cace675d687 ("bnx2x: Alloc 4k fragment for each rx ring buffer
> element")
> Signed-off-by: Michal Schmidt <mschm...@redhat.com>
Applied, thank you.
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