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ARM: dmabounce: fix map_single() error return value

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When map_single() is unable to obtain a safe buffer, we must return
the dma_addr_t error value, which is ~0 rather than 0.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2011-07-03 23:24:21 +01:00
parent ca56a95eed
commit 178783622c
1 changed files with 1 additions and 1 deletions
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2
arch/arm/common/dmabounce.c
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@ -255,7 +255,7 @@ static inline dma_addr_t map_single(struct device *dev, void *ptr, size_t size,
if (buf == 0) { if (buf == 0) {
dev_err(dev, "%s: unable to map unsafe buffer %p!\n", dev_err(dev, "%s: unable to map unsafe buffer %p!\n",
__func__, ptr); __func__, ptr);
return 0; return ~0;
} }
dev_dbg(dev, dev_dbg(dev,