From: Stefan Wahren <stefan.wah...@i2se.com>
Date: Tue, 18 Oct 2016 13:27:31 +0200
> The MTU of the QCA7000 is independent from it's host interface (UART,SPI).
> So move the change_mtu function to qca_common.
>
> Signed-off-by: Stefan Wahren <stefan.wah...@i2se.com>
> ---
> drivers/net/ethernet/qualcomm/qca_common.c | 11 +++++++++++
> drivers/net/ethernet/qualcomm/qca_common.h | 3 +++
> drivers/net/ethernet/qualcomm/qca_spi.c | 13 +------------
> 3 files changed, 15 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/net/ethernet/qualcomm/qca_common.c
> b/drivers/net/ethernet/qualcomm/qca_common.c
> index 26453a9..9020c57 100644
> --- a/drivers/net/ethernet/qualcomm/qca_common.c
> +++ b/drivers/net/ethernet/qualcomm/qca_common.c
> @@ -154,3 +154,14 @@ qcafrm_fsm_decode(struct qcafrm_handle *handle, u8 *buf,
> u16 buf_len, u8 recv_by
>
> return ret;
> }
> +
> +int
> +qcacmn_netdev_change_mtu(struct net_device *dev, int new_mtu)
> +{
> + if ((new_mtu < QCAFRM_ETHMINMTU) || (new_mtu > QCAFRM_ETHMAXMTU))
> + return -EINVAL;
In net-next this limiting is implemented by the driver properly setting
netdev->min_mtu and netdev->max_mtu respectively.
And once you do that, you no longer need this method at all.
