We don't initialize it, we don't use it, remove it.
We can bring it back if we ever wish to have support for devices
who have smaller than 32-bit DMA limitations but I don't think
we care much anymore.
Signed-off-by: Benjamin Herrenschmidt <b...@kernel.crashing.org>
---
arch/powerpc/Kconfig | 2 +-
arch/powerpc/kernel/dma.c | 10 +---------
2 files changed, 2 insertions(+), 10 deletions(-)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 22b0940..4efbfba 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -712,7 +712,7 @@ config ISA
config ZONE_DMA
bool
- default y
+ default n
config NEED_DMA_MAP_STATE
def_bool (PPC64 || NOT_COHERENT_CACHE)
diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c
index e24e0ae..6306d4e 100644
--- a/arch/powerpc/kernel/dma.c
+++ b/arch/powerpc/kernel/dma.c
@@ -63,16 +63,8 @@ void *dma_direct_alloc_coherent(struct device *dev, size_t
size,
return NULL;
}
- switch (zone) {
- case ZONE_DMA:
- flag |= GFP_DMA;
- break;
-#ifdef CONFIG_ZONE_DMA32
- case ZONE_DMA32:
+ if (zone == ZONE_DMA32)
flag |= GFP_DMA32;
- break;
-#endif
- };
/* ignore region specifiers */
flag &= ~(__GFP_HIGHMEM);
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