On Mon, Jul 26, 2010 at 1:44 PM, Dezhong Diao (dediao) <dediao@xxxxxxxxx> wrote:
> It is not a problem our hardware supports DMA directly to high memory.
Mine too. The existing dma-default.c does not handle high pages at
all, but applying your patch did not completely solve the problem on
my setup so I think something else is still going wrong. If I figure
it out I'll post a fix.
In the meantime could you please consider adding BUG() to the else clause, e.g.
+ if (addr) {
+ addr += offset;
+ __dma_sync_virtual(addr, size, direction);
+ kunmap_high(page);
+ } else
+ BUG()
Thanks.
