1 # This patch fixes ixp4xx_copy_from for cases where the 'from'
2 # pointer is odd - that would cause all the accesses to be
3 # misaligned in the old code.
4 --- linux-2.6.12.2/.pc/ixp4xx_copy_from.patch/drivers/mtd/maps/ixp4xx.c 2005-09-21 22:35:38.761014739 -0700
5 +++ linux-2.6.12.2/drivers/mtd/maps/ixp4xx.c 2005-09-23 01:27:54.696223365 -0700
7 static void ixp4xx_copy_from(struct map_info *map, void *to,
8 unsigned long from, ssize_t len)
11 - u8 *dest = (u8 *) to;
12 - u16 *src = (u16 *) (map->map_priv_1 + from);
17 - for (i = 0; i < (len / 2); i++) {
19 - dest[i * 2] = BYTE0(data);
20 - dest[i * 2 + 1] = BYTE1(data);
21 + u8 *dest = (u8 *) to;
22 + u8 *src = (u8 *) (map->map_priv_1 + from);
24 + *dest++ = BYTE1(*(u16 *)(src-1)), ++src, --len;
27 + u16 data = *(u16 *)src; src += 2;
28 + *dest++ = BYTE0(data);
29 + *dest++ = BYTE1(data);
34 - dest[len - 1] = BYTE0(src[i]);
36 + *dest++ = BYTE0(*(u16 *)src);