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    SubjectRe: [PATCH v4 04/10] net: eth: altera: add optional function to start tx dma
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    On 7/8/20 2:23 AM, Ooi, Joyce wrote:
    > From: Dalon Westergreen <dalon.westergreen@intel.com>
    >
    > Allow for optional start up of tx dma if the start_txdma
    > function is defined in altera_dmaops.
    >
    > Signed-off-by: Dalon Westergreen <dalon.westergreen@intel.com>
    > Signed-off-by: Joyce Ooi <joyce.ooi@intel.com>
    > ---
    > v2: no change
    > v3: no change
    > v4: no change
    > ---
    > drivers/net/ethernet/altera/altera_tse.h | 1 +
    > drivers/net/ethernet/altera/altera_tse_main.c | 5 +++++
    > 2 files changed, 6 insertions(+)
    >
    > diff --git a/drivers/net/ethernet/altera/altera_tse.h b/drivers/net/ethernet/altera/altera_tse.h
    > index 7d0c98fc103e..26c5541fda27 100644
    > --- a/drivers/net/ethernet/altera/altera_tse.h
    > +++ b/drivers/net/ethernet/altera/altera_tse.h
    > @@ -401,6 +401,7 @@ struct altera_dmaops {
    > int (*init_dma)(struct altera_tse_private *priv);
    > void (*uninit_dma)(struct altera_tse_private *priv);
    > void (*start_rxdma)(struct altera_tse_private *priv);
    > + void (*start_txdma)(struct altera_tse_private *priv);
    > };
    >
    > /* This structure is private to each device.
    > diff --git a/drivers/net/ethernet/altera/altera_tse_main.c b/drivers/net/ethernet/altera/altera_tse_main.c
    > index a3749ffdcac9..0a724e4d2c8c 100644
    > --- a/drivers/net/ethernet/altera/altera_tse_main.c
    > +++ b/drivers/net/ethernet/altera/altera_tse_main.c
    > @@ -1244,6 +1244,9 @@ static int tse_open(struct net_device *dev)
    >
    > priv->dmaops->start_rxdma(priv);
    >
    > + if (priv->dmaops->start_txdma)
    > + priv->dmaops->start_txdma(priv);
    > +
    > /* Start MAC Rx/Tx */
    > spin_lock(&priv->mac_cfg_lock);
    > tse_set_mac(priv, true);
    > @@ -1646,6 +1649,7 @@ static const struct altera_dmaops altera_dtype_sgdma = {
    > .init_dma = sgdma_initialize,
    > .uninit_dma = sgdma_uninitialize,
    > .start_rxdma = sgdma_start_rxdma,
    > + .start_txdma = NULL,
    > };
    >
    > static const struct altera_dmaops altera_dtype_msgdma = {
    > @@ -1665,6 +1669,7 @@ static const struct altera_dmaops altera_dtype_msgdma = {
    > .init_dma = msgdma_initialize,
    > .uninit_dma = msgdma_uninitialize,
    > .start_rxdma = msgdma_start_rxdma,
    > + .start_txdma = NULL,
    > };
    >
    > static const struct of_device_id altera_tse_ids[] = {
    >
    Reviewed-by: Thor Thayer <thor.thayer@linux.intel.com>

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