On Wed, Jun 11, 2014 at 02:47:31PM +0200, Mikko Perttunen wrote:
> On 05/06/14 16:09, Peter De Schrijver wrote:
> ...
> > +int tegra_fuse_readl(u32 offset, u32 *val)
> > +{
> > + if (!fuse_readl)
> > + return -ENXIO;
> > +
> > + *val = fuse_readl(offset);
> > +
> > + return 0;
> > +}
> > +
>
> -EPROBE_DEFER would be a better error value, so that drivers can work
Ok.
> even if they are initially probed before the fuse driver. Of course, if
> the fuse initialization is moved into machine init then this is a non-issue.
The exported function will always be initialized later because on Tegra20 it
requires APB DMA to be available. If you read the fuses directly, the system
sometimes hangs.
Cheers,
Peter.
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