Merge remote-tracking branches 'spi/topic/dw', 'spi/topic/dw-mid', 'spi/topic/fsl...

[mirror_ubuntu-hirsute-kernel.git] / drivers / net / ethernet / stmicro / stmmac / stmmac_main.c

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 6256b32cec37438ffb65f230fdb6ff035b10380b..a5b869eb46783e338708f93c31f33524116e637f 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -2232,6 +2232,12 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit)
 
                        frame_len = priv->hw->desc->get_rx_frame_len(p, coe);
 
+                       /*  check if frame_len fits the preallocated memory */
+                       if (frame_len > priv->dma_buf_sz) {
+                               priv->dev->stats.rx_length_errors++;
+                               break;
+                       }
+
                        /* ACS is set; GMAC core strips PAD/FCS for IEEE 802.3
                         * Type frames (LLC/LLC-SNAP)
                         */
@@ -3040,8 +3046,6 @@ int stmmac_suspend(struct net_device *ndev)
        priv->hw->dma->stop_tx(priv->ioaddr);
        priv->hw->dma->stop_rx(priv->ioaddr);
 
-       stmmac_clear_descriptors(priv);
-
        /* Enable Power down mode by programming the PMT regs */
        if (device_may_wakeup(priv->device)) {
                priv->hw->mac->pmt(priv->hw, priv->wolopts);
@@ -3099,7 +3103,12 @@ int stmmac_resume(struct net_device *ndev)
 
        netif_device_attach(ndev);
 
-       init_dma_desc_rings(ndev, GFP_ATOMIC);
+       priv->cur_rx = 0;
+       priv->dirty_rx = 0;
+       priv->dirty_tx = 0;
+       priv->cur_tx = 0;
+       stmmac_clear_descriptors(priv);
+
        stmmac_hw_setup(ndev, false);
        stmmac_init_tx_coalesce(priv);
        stmmac_set_rx_mode(ndev);