A minor typo:
...
> Avoiding unaligned accesses
> ===========================
>
> The easiest way to avoid unaligned access is to use the get_unaligned() and
> put_unaligned() macros provided by the <asm/unaligned.h> header file.
>
> Going back to an earlier example of code that potentially causes unaligned
> access:
>
> void myfunc(u8 *data, u32 value)
> {
> [...]
> *((u32 *) data) = cpu_to_le32(value);
> [...]
> }
>
> To avoid the unaligned memory access, you would rewrite it as follows:
>
> void myfunc(u8 *data, u32 value)
> {
> [...]
> value = cpu_to_le32(value);
> put_unaligned(value, data);
> [...]
> }
>
> The get_unaligned() macro works similarly. Assuming 'data' is a pointer to
> memory and you wish to avoid unaligned access, its usage is as follows:
>
> u32 value = get_unaligned(data);
>
> These macros work work for memory accesses of any length (not just 32 bits as
^^^^^^^^^
remove one of them :)
Honza
--
Jan Kara <[email protected]>
SuSE CR Labs
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
