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ARM: dmabounce: fix map_single() error return value
author
Russell King
<rmk+kernel@arm.linux.org.uk>
Sun, 3 Jul 2011 22:24:21 +0000
(23:24 +0100)
committer
Russell King
<rmk+kernel@arm.linux.org.uk>
Sun, 3 Jul 2011 22:24:21 +0000
(23:24 +0100)
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>
arch/arm/common/dmabounce.c
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diff --git
a/arch/arm/common/dmabounce.c
b/arch/arm/common/dmabounce.c
index
e568163
..
841df7d
100644
(file)
--- a/
arch/arm/common/dmabounce.c
+++ b/
arch/arm/common/dmabounce.c
@@
-255,7
+255,7
@@
static inline dma_addr_t map_single(struct device *dev, void *ptr, size_t size,
if (buf == 0) {
dev_err(dev, "%s: unable to map unsafe buffer %p!\n",
__func__, ptr);
- return 0;
+ return
~
0;
}
dev_dbg(dev,