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ARM: Use GFP_DMA only for masks _less_ than 32-bit

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We were using GFP_DMA for masks other than 0xffffffff, which is
wrong when some masks are initialized to 0xffffffffffffffff.
This caused such masks to obtain memory from the precious DMA
pool.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2009-10-25 22:36:10 +00:00
parent ce63e6bd0a
commit c06e004c72
1 changed files with 2 additions and 2 deletions
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4
arch/arm/mm/dma-mapping.c
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@@ -205,7 +205,7 @@ __dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp,
order = get_order(size); order = get_order(size);
if (mask != 0xffffffff) if (mask < 0xffffffffULL)
gfp |= GFP_DMA; gfp |= GFP_DMA;
page = alloc_pages(gfp, order); page = alloc_pages(gfp, order);
@@ -289,7 +289,7 @@ __dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp,
if (!mask) if (!mask)
goto error; goto error;
if (mask != 0xffffffff) if (mask < 0xffffffffULL)
gfp |= GFP_DMA; gfp |= GFP_DMA;
virt = kmalloc(size, gfp); virt = kmalloc(size, gfp);
if (!virt) if (!virt)