[PATCH v3 1/6] net: stmmac: return error if no DMA configuration is found
From: Niklas Cassel <hidden>
Date: 2016-12-07 14:21:28
Also in:
lkml
Subsystem:
networking drivers, stmmac ethernet driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Maxime Chevallier, Linus Torvalds
From: Niklas Cassel <redacted> All drivers except pci glue layer calls stmmac_probe_config_dt. stmmac_probe_config_dt does a kzalloc dma_cfg. pci glue layer does kzalloc dma_cfg explicitly, so all current drivers does a kzalloc dma_cfg. Return an error if no DMA configuration is found, that way we can assume that the DMA configuration always exists. Signed-off-by: Niklas Cassel <redacted> --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 982c95213da4..14366800e5e6 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c@@ -1578,16 +1578,12 @@ static void stmmac_check_ether_addr(struct stmmac_priv *priv) */ static int stmmac_init_dma_engine(struct stmmac_priv *priv) { - int pbl = DEFAULT_DMA_PBL, fixed_burst = 0, aal = 0; - int mixed_burst = 0; int atds = 0; int ret = 0; - if (priv->plat->dma_cfg) { - pbl = priv->plat->dma_cfg->pbl; - fixed_burst = priv->plat->dma_cfg->fixed_burst; - mixed_burst = priv->plat->dma_cfg->mixed_burst; - aal = priv->plat->dma_cfg->aal; + if (!priv->plat->dma_cfg) { + dev_err(priv->device, "DMA configuration not found\n"); + return -EINVAL; } if (priv->extend_desc && (priv->mode == STMMAC_RING_MODE))
@@ -1599,8 +1595,12 @@ static int stmmac_init_dma_engine(struct stmmac_priv *priv) return ret; } - priv->hw->dma->init(priv->ioaddr, pbl, fixed_burst, mixed_burst, - aal, priv->dma_tx_phy, priv->dma_rx_phy, atds); + priv->hw->dma->init(priv->ioaddr, + priv->plat->dma_cfg->pbl, + priv->plat->dma_cfg->fixed_burst, + priv->plat->dma_cfg->mixed_burst, + priv->plat->dma_cfg->aal, + 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 +
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2.1.4