[PATCH net-next] net: airoha: move get_sport() callback at the beginning of airoha_enable_gdm2_loopback()

[Simon Horman]

On Mon, Jun 08, 2026 at 11:24:15PM +0200, Lorenzo Bianconi wrote:
> Move the get_sport() callback invocation at the beginning of
> airoha_enable_gdm2_loopback() routine in order to avoid leaving the
> hardware in a partially configured state if get_sport() fails.
> Previously, get_sport() was called after GDM2 forwarding, loopback,
> channel, length, VIP and IFC registers had already been programmed.
> A failure at that point would return an error leaving GDM2 with
> loopback enabled but WAN port, PPE CPU port and flow control mappings
> not configured.
> Performing the get_sport() lookup before any register write guarantees
> the routine either completes the full configuration sequence or exits
> with no side effects on the hardware.
> 
> Signed-off-by: Lorenzo Bianconi <lorenzo at kernel.org>

Reviewed-by: Simon Horman <horms at kernel.org>