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authorDan Williams <dan.j.williams@intel.com>2009-09-08 20:55:21 -0400
committerDan Williams <dan.j.williams@intel.com>2009-09-08 20:55:21 -0400
commitbbb20089a3275a19e475dbc21320c3742e3ca423 (patch)
tree216fdc1cbef450ca688135c5b8969169482d9a48 /include/asm-generic/uaccess-unaligned.h
parent3e48e656903e9fd8bc805c6a2c4264d7808d315b (diff)
parent657a77fa7284d8ae28dfa48f1dc5d919bf5b2843 (diff)
Merge branch 'dmaengine' into async-tx-next
Conflicts: crypto/async_tx/async_xor.c drivers/dma/ioat/dma_v2.h drivers/dma/ioat/pci.c drivers/md/raid5.c
Diffstat (limited to 'include/asm-generic/uaccess-unaligned.h')
-rw-r--r--include/asm-generic/uaccess-unaligned.h26
1 files changed, 26 insertions, 0 deletions
diff --git a/include/asm-generic/uaccess-unaligned.h b/include/asm-generic/uaccess-unaligned.h
new file mode 100644
index 000000000000..67deb898f0c5
--- /dev/null
+++ b/include/asm-generic/uaccess-unaligned.h
@@ -0,0 +1,26 @@
1#ifndef __ASM_GENERIC_UACCESS_UNALIGNED_H
2#define __ASM_GENERIC_UACCESS_UNALIGNED_H
3
4/*
5 * This macro should be used instead of __get_user() when accessing
6 * values at locations that are not known to be aligned.
7 */
8#define __get_user_unaligned(x, ptr) \
9({ \
10 __typeof__ (*(ptr)) __x; \
11 __copy_from_user(&__x, (ptr), sizeof(*(ptr))) ? -EFAULT : 0; \
12 (x) = __x; \
13})
14
15
16/*
17 * This macro should be used instead of __put_user() when accessing
18 * values at locations that are not known to be aligned.
19 */
20#define __put_user_unaligned(x, ptr) \
21({ \
22 __typeof__ (*(ptr)) __x = (x); \
23 __copy_to_user((ptr), &__x, sizeof(*(ptr))) ? -EFAULT : 0; \
24})
25
26#endif /* __ASM_GENERIC_UACCESS_UNALIGNED_H */