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authorSean MacLennan <smaclennan@pikatech.com>2009-06-10 15:09:23 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-06-16 14:15:44 +1000
commit79290e4b692af8a76273bab38e41a3a385dedc7b (patch)
tree887697231707ac381198027a12eb0bbbd704edd6 /arch/powerpc/platforms/44x
parent247608234e944e3e8e4d503c54c19ccb63dd27f2 (diff)
powerpc/warp: Fix ISA_DMA_THRESHOLD default
If no device is passed to __dma_alloc_coherent, it defaults to using ISA_DMA_THRESHOLD for the mask. This patch provides a reasonable default rather than 0. Signed-off-by: Sean MacLennan <smaclennan@pikatech.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms/44x')
-rw-r--r--arch/powerpc/platforms/44x/warp.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/44x/warp.c b/arch/powerpc/platforms/44x/warp.c
index c5118802a28..42e09a9f77e 100644
--- a/arch/powerpc/platforms/44x/warp.c
+++ b/arch/powerpc/platforms/44x/warp.c
@@ -43,7 +43,13 @@ static int __init warp_probe(void)
{
unsigned long root = of_get_flat_dt_root();
- return of_flat_dt_is_compatible(root, "pika,warp");
+ if (!of_flat_dt_is_compatible(root, "pika,warp"))
+ return 0;
+
+ /* For __dma_alloc_coherent */
+ ISA_DMA_THRESHOLD = ~0L;
+
+ return 1;
}
define_machine(warp) {