[U-Boot] [PATCH] net: Protect net_state from reentrant net_loop()

[Joe Hershberger]

On Tue, May 8, 2018 at 8:55 AM, Leonid Iziumtsev
<leonid.iziumtsev at gmail.com> wrote:
> Global variable "net_state" is used in net_loop() state-machine.
> But it happens that some times the net_loop() can be called
> multiple times in the same call stack. For example when the
> netconsole is enabled and we print the message while some other
> net protocol is in action. Netconsole will overwrite the "net_state"
> and that will break the logic for earlier started protocol.
>
> To protect the state save and restore "net_state" variable each
> time when we enter and exit net_loop().
>
> Signed-off-by: Leonid Iziumtsev <leonid.iziumtsev at se.atlascopco.com>

Acked-by: Joe Hershberger <joe.hershberger at ni.com>