net: stmmac: Fix null-function call in ISR on stmmac1000
authorMatt Corallo <linux@bluematt.me>
Thu, 30 Jun 2016 19:46:16 +0000 (19:46 +0000)
committerDavid S. Miller <davem@davemloft.net>
Sat, 2 Jul 2016 18:36:18 +0000 (14:36 -0400)
(resent due to overhelpful mail client corrupting patch)

At least on Meson GXBB, the CORE_IRQ_MTL_RX_OVERFLOW interrupt is thrown
with the stmmac1000 driver, which does not support set_rx_tail_ptr. With
this patch and the clock fixes, 1G ethernet works on ODROID-C2.

Signed-off-by: Matt Corallo <git@bluematt.me>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

index a473c18..e407126 100644 (file)
@@ -2804,7 +2804,7 @@ static irqreturn_t stmmac_interrupt(int irq, void *dev_id)
                                priv->tx_path_in_lpi_mode = true;
                        if (status & CORE_IRQ_TX_PATH_EXIT_LPI_MODE)
                                priv->tx_path_in_lpi_mode = false;
-                       if (status & CORE_IRQ_MTL_RX_OVERFLOW)
+                       if (status & CORE_IRQ_MTL_RX_OVERFLOW && priv->hw->dma->set_rx_tail_ptr)
                                priv->hw->dma->set_rx_tail_ptr(priv->ioaddr,
                                                        priv->rx_tail_addr,
                                                        STMMAC_CHAN0);