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powerpc: Remove superfluous WARN_ON() from dma-noncoherent.c

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I can't tell why this WARN_ON exists, and there's no comment
explaining it.  Whether the pmd is present or not, pte_alloc_kernel()
seems to handle both cases.

Booting a 440 kernel with 64K PAGE_SIZE triggers the warning, but boot
successfully completes and I see no problems beyond that.

Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Hollis Blanchard 2008-11-10 14:33:36 +00:00 committed by Paul Mackerras
parent efc3624c94
commit 7526ff76f8
1 changed files with 0 additions and 1 deletions
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arch/powerpc/lib/dma-noncoherent.c
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@ -320,7 +320,6 @@ static int __init dma_alloc_init(void)
ret = -ENOMEM;
break;
}
WARN_ON(!pmd_none(*pmd));
pte = pte_alloc_kernel(pmd, CONSISTENT_BASE);
if (!pte) {