From 1c1832c7cd35db90b126a984685b44858ad63d01 Mon Sep 17 00:00:00 2001 From: "Girish K.S" Date: Thu, 15 Jan 2015 10:41:47 +0900 Subject: net: sxgbe: Fix NULL dereferece when using DT When the MAC address is provided in the device tree file, the condition is true and kernel crashes due to NULL dereference. Signed-off-by: Girish K.S Signed-off-by: Byungho An Signed-off-by: Kukjin Kim Signed-off-by: David S. Miller --- drivers/net/ethernet/samsung/sxgbe/sxgbe_platform.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/net/ethernet/samsung') diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_platform.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_platform.c index 866560ea9e18..b02eed12bfc5 100644 --- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_platform.c +++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_platform.c @@ -108,10 +108,6 @@ static int sxgbe_platform_probe(struct platform_device *pdev) } } - /* Get MAC address if available (DT) */ - if (mac) - ether_addr_copy(priv->dev->dev_addr, mac); - priv = sxgbe_drv_probe(&(pdev->dev), plat_dat, addr); if (!priv) { pr_err("%s: main driver probe failed\n", __func__); @@ -125,6 +121,10 @@ static int sxgbe_platform_probe(struct platform_device *pdev) goto err_drv_remove; } + /* Get MAC address if available (DT) */ + if (mac) + ether_addr_copy(priv->dev->dev_addr, mac); + /* Get the TX/RX IRQ numbers */ for (i = 0, chan = 1; i < SXGBE_TX_QUEUES; i++) { priv->txq[i]->irq_no = irq_of_parse_and_map(node, chan++); -- cgit v1.2.3 From f7d855566ff69207be1052ceecbf455f89490b42 Mon Sep 17 00:00:00 2001 From: Byungho An Date: Thu, 15 Jan 2015 10:43:11 +0900 Subject: net: sxgbe: Fix waring for double kfree() This patch fixes double kfree() calls at init_rx_ring() because it causes static checker warning. Reported-by: Dan Carpenter Signed-off-by: Byungho An Signed-off-by: Kukjin Kim Signed-off-by: David S. Miller --- drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c | 21 ++++++++++----------- 1 file changed, 10 insertions(+), 11 deletions(-) (limited to 'drivers/net/ethernet/samsung') diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c index 698494481d18..b1a271853d85 100644 --- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c +++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c @@ -474,13 +474,19 @@ static int init_rx_ring(struct net_device *dev, u8 queue_no, /* allocate memory for RX skbuff array */ rx_ring->rx_skbuff_dma = kmalloc_array(rx_rsize, sizeof(dma_addr_t), GFP_KERNEL); - if (rx_ring->rx_skbuff_dma == NULL) - goto dmamem_err; + if (!rx_ring->rx_skbuff_dma) { + dma_free_coherent(priv->device, + rx_rsize * sizeof(struct sxgbe_rx_norm_desc), + rx_ring->dma_rx, rx_ring->dma_rx_phy); + goto error; + } rx_ring->rx_skbuff = kmalloc_array(rx_rsize, sizeof(struct sk_buff *), GFP_KERNEL); - if (rx_ring->rx_skbuff == NULL) - goto rxbuff_err; + if (!rx_ring->rx_skbuff) { + kfree(rx_ring->rx_skbuff_dma); + goto error; + } /* initialise the buffers */ for (desc_index = 0; desc_index < rx_rsize; desc_index++) { @@ -502,13 +508,6 @@ static int init_rx_ring(struct net_device *dev, u8 queue_no, err_init_rx_buffers: while (--desc_index >= 0) free_rx_ring(priv->device, rx_ring, desc_index); - kfree(rx_ring->rx_skbuff); -rxbuff_err: - kfree(rx_ring->rx_skbuff_dma); -dmamem_err: - dma_free_coherent(priv->device, - rx_rsize * sizeof(struct sxgbe_rx_norm_desc), - rx_ring->dma_rx, rx_ring->dma_rx_phy); error: return -ENOMEM; } -- cgit v1.2.3