RE: ibmvtpm byteswapping inconsistency

[David Laight]

From: Michal Suchánek
> building ibmvtpm I noticed gcc warning complaining that second word of
> struct ibmvtpm_crq in tpm_ibmvtpm_suspend is uninitialized.
> 
> The structure is defined as
> 
> struct ibmvtpm_crq {
>         u8 valid;
>         u8 msg;
>         __be16 len;
>         __be32 data;
>         __be64 reserved;
> } __attribute__((packed, aligned(8)));
> 
> initialized as
> 
>         struct ibmvtpm_crq crq;
>         u64 *buf = (u64 *) &crq;
...

Hrummfff....
What is that attribute for, seems pretty confusing and pointless to me.

I also suspect that if you want to access it as two 64bit words it
ought to be a union.

	David