On Tuesday 28 April 2009, Oliver Neukum wrote:
> Am Dienstag 28 April 2009 04:52:34 schrieb Sarah Sharp:
> > +/**
> > + * struct doorbell_array
> > + *
> > + * Section 5.6
> > + */
> > +struct xhci_doorbell_array {
> > + u32 doorbell[256];
> > +} __attribute__ ((packed));
>
> If you declare this packed, does gcc still give you atomic writes on
> all platforms or will it write bytewise?
For that matter ... why "packed"? To ensure that it can
be un-aligned? I thought it was pretty much guaranteed
that an array of same-size values will have no padding. :)
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