[PATCH] 2.6 ppc64 RTAS: use dynamic buffer size

[Paul Mackerras]

Linas,

> Firmware expects error log sizes to be of a very specific size,
> but different versions of firmware appearently expect different
> sizes; using the wrong size results in a painful, hard-to-debug crash
> in firmware. Benh provided a patch for this some months ago, but
> appreantly missed this code path. This patch sets up the log buffer
> size dynamically; it also fixes a bug with the return code not being
> handled correctly.

Just small nit, but this hunk looks pointless:

> @@ -105,6 +111,7 @@
>  	err_args = rtas.args;
>  	rtas.args = save_args;
>
> +	err_args.rets = (rtas_arg_t *)&(err_args.args[2]);
>  	return err_args.rets[0];
>  }
>

The rest of it looks fine.  If you agree that this hunk can go, I'll
send the rest of it upstream.

Paul.

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