[PATCH] USB: ehci: use packed, aligned(4) instead of removing the packed attribute

On Sunday 19 June 2011 22:02:23 Arnd Bergmann wrote:

In this case, we would have to do

struct s {
        char c[2];
} __packed;

struct t {
        struct s t1;
        unsigned short t2[3] __aligned(2);
} __packed;

To tell the compiler that t2 is indeed aligned, while struct t
is packed to include no padding around t.
 
I actually recently stumbled over code that gets this wrong,
see

http://git.kernel.org/?p=linux/kernel/git/arnd/playground.git;a=commit;h=284cef173aafd531a708f48e71a9cc7249fc8a98

Just to be clear: none of the ehci structures fall into this category.
I would assume that we actually have a few more drivers with this
bug in the kernel, but the patch proposed by Alexander would not
help with this problem, and the EHCI driver is still correct without
__packed.

	Arnd