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powerpc: Fix link errors on 32-bit machines using legacy DMA
authorBenjamin Herrenschmidt <benh@kernel.crashing.org>
Mon, 13 Oct 2008 17:51:46 +0000 (17:51 +0000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Tue, 14 Oct 2008 23:13:29 +0000 (10:13 +1100)
The new merged DMA code will try to access isa_bridge_pcidev when
trying to DMA to/from legacy devices. This is however only defined
on 64-bit. Fixes this for now by adding the variable, even if it
stays NULL. In the long run, we'll make isa-bridge.c common to
32 and 64-bit.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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