[U-Boot] image-fit: switch ENOLINK to ENOENT

[Jonathan Gray]

On Thu, Sep 08, 2016 at 08:48:53AM -0400, Tom Rini wrote:
> On Thu, Sep 08, 2016 at 10:01:52PM +1000, Jonathan Gray wrote:
> > On Wed, Sep 07, 2016 at 02:00:19PM -0400, Tom Rini wrote:
> > > On Sat, Sep 03, 2016 at 08:30:14AM +1000, Jonathan Gray wrote:
> > > 
> > > > ENOLINK is not required by POSIX and does not exist on OpenBSD
> > > > and likely other systems.
> > > > 
> > > > Signed-off-by: Jonathan Gray <jsg at jsg.id.au>
> > > 
> > > Applied to u-boot/master, thanks!
> > 
> > Thanks for applying this and the other patch.
> > 
> > In tools/kwboot.c I've also locally changed EPROTO and EBADMSG as they
> > aren't on OpenBSD either.
> > 
> > They are in POSIX however so I am trying to get them into OpenBSD,
> > but it will need some time to be scheduled as introducing errnos
> > involves cranking the major version of libc due to the size of the array
> > with errno strings changing.
> > 
> > I wasn't sure if the following would be accepted for that reason,
> > thoughts?
> 
> Well, looking over the code in question, we're talking about error
> handling during xmodem transfers.  What are the errno values that get
> used there by xmodem tools?  Thanks!

I don't see how xmodem tools would use those errno values themselves?
>From what I understood, kwboot attaches directly to serial /dev devices
and handles xmodem and terminal emulation itself.

In the kwboot case nothing in the return path seems to check for
specific errno values.  The return sequence looks like

kwboot_xm_sendblock
kwboot_xmodem
main
perror("xmodem");