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authorDave Airlie <airlied@starflyer.(none)>2005-09-25 13:14:45 +1000
committerDave Airlie <airlied@linux.ie>2005-09-25 13:14:45 +1000
commit4e0c1159d83a658d1ffba5bc3442f4ec4cadb436 (patch)
tree36a5079ba7ba9b9e0f2f633356705b980940eac4 /include/linux/byteorder
parentea98a92ff18c03bf7f4d21536986cbbcb4c10cd9 (diff)
parentef6bd6eb90ad72ee8ee7ba8b271f27102e9a90c1 (diff)
update from upstream
Diffstat (limited to 'include/linux/byteorder')
-rw-r--r--include/linux/byteorder/generic.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/byteorder/generic.h b/include/linux/byteorder/generic.h
index 5fde6f4d6c1e..04bd756efc67 100644
--- a/include/linux/byteorder/generic.h
+++ b/include/linux/byteorder/generic.h
@@ -5,6 +5,10 @@
* linux/byteorder_generic.h
* Generic Byte-reordering support
*
+ * The "... p" macros, like le64_to_cpup, can be used with pointers
+ * to unaligned data, but there will be a performance penalty on
+ * some architectures. Use get_unaligned for unaligned data.
+ *
* Francois-Rene Rideau <fare@tunes.org> 19970707
* gathered all the good ideas from all asm-foo/byteorder.h into one file,
* cleaned them up.