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ARM: dmabounce: simplify dma_set_mask() 

Simplify the dmabounce specific code in dma_set_mask().  We can just
omit setting the dma mask if dmabounce is enabled (we will have already
set dma mask via callbacks when the device is created in that case.)

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
hifive-unleashed-5.1
Russell King 2011-07-08 14:02:21 +01:00
parent 5c8598fca1
commit 3973c33775
1 changed files with 2 additions and 8 deletions
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10
arch/arm/include/asm/dma-mapping.h
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@ -133,18 +133,12 @@ static inline int dma_supported(struct device *dev, u64 mask)
static inline int dma_set_mask(struct device *dev, u64 dma_mask)
{
#ifdef CONFIG_DMABOUNCE
if (dev->archdata.dmabounce) {
if (dma_mask >= ISA_DMA_THRESHOLD)
return 0;
else
return -EIO;
}
#endif
if (!dev->dma_mask || !dma_supported(dev, dma_mask))
return -EIO;
#ifndef CONFIG_DMABOUNCE
*dev->dma_mask = dma_mask;
#endif
return 0;
}