[U-Boot] [PATCH] [v2] tsec: fix the return value for tsec_eth_init() and tsec_standard_init()

[Timur Tabi <timur@freescale.com>]

Reinhard Meyer (-VC) wrote:

> That poses the general question what a function that initializes several
> devices should do if one of the devices should return an error and what
> to return if ALL devices return an error.

I believe the consensus is that any device initialization function that
returns an error is simply ignored and skipped, which is what my patch does:

	for (i = 0; i < num; i++) {
		ret = tsec_initialize(bis, &tsecs[i]);
		if (ret > 0)
			count += ret;
	}

I could have done "if (ret >= 0)", but that's less efficient.

> At least in the last case I would assume to return the error code of one
> of the devices.

But which error code?  What if the first device returns -1, and the second
one returns -2?

> In the cases where not all, but at least one of the devices get initialized
> without error, the number of successful devices might be returned.

That's what we do today.

> However, in most contexts that might not be helpful to the rest of the
> system anyway.
> 
>