From: Joao Pinto <joao.pi...@synopsys.com>
Date: Mon, 13 Mar 2017 16:12:40 +0000
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> index e60e077..44db2e3 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> @@ -1732,6 +1732,10 @@ static void stmmac_check_ether_addr(struct stmmac_priv
> *priv)
> */
> static int stmmac_init_dma_engine(struct stmmac_priv *priv)
> {
> + u32 rx_channels_count = priv->plat->rx_queues_to_use;
> + u32 tx_channels_count = priv->plat->tx_queues_to_use;
> + u32 dummy_dma_rx_phy, dummy_dma_tx_phy = 0;
> + u32 chan = 0;
> int atds = 0;
> int ret = 0;
>
dummy_dma_rx_phy is declared, but not initialized:
> @@ -1749,19 +1753,43 @@ static int stmmac_init_dma_engine(struct stmmac_priv
> *priv)
> return ret;
> }
>
> - priv->hw->dma->init(priv->ioaddr, priv->plat->dma_cfg,
> - priv->dma_tx_phy, priv->dma_rx_phy, atds);
> -
> if (priv->synopsys_id >= DWMAC_CORE_4_00) {
> - priv->rx_tail_addr = priv->dma_rx_phy +
> - (DMA_RX_SIZE * sizeof(struct dma_desc));
> - priv->hw->dma->set_rx_tail_ptr(priv->ioaddr, priv->rx_tail_addr,
> - STMMAC_CHAN0);
> + /* DMA Configuration */
> + priv->hw->dma->init(priv->ioaddr, priv->plat->dma_cfg,
> + dummy_dma_tx_phy, dummy_dma_rx_phy, atds);
> +
Yet it is used here, still uninitialized.
The compiler even warns about this.
