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.