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Using byte ordering functions and then memcpy() is risky and
prone to hide errors which are hard to track down. So, this
patch introduces the use of function put_unaligned_le16 which
makes the code clear. Here, use of variable tim_bitmap_le
and variable itself is removed. Also, to be compatible with the
changes header file is added too.
Coccinelle is used to do this change and semantic patch used for
this is as follows:
@a@
typedef __le16;
__le16 e16;
identifier tmp;
expression ptr;
expression y,e;
type T;
@@
- tmp = cpu_to_le16(y);
<+... when != tmp
(
- memcpy(ptr, (T)&tmp, \(2\|sizeof(__le16)\|sizeof(e16)\));
+ put_unaligned_le16(y,ptr);
|
- memcpy(ptr, (T)&tmp, ...);
+ put_unaligned_le16(y,ptr);
)
...+>
? tmp = e
@@ type T; identifier a.tmp; @@
- T tmp;
...when != tmp
Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
b5e38b10e4