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Merge branch 'stmmac-dma-resources-fixes'

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Christophe JAILLET says:

====================
net: stmmac: Fixes and cleanups in 'alloc_dma_[rt]x_desc_resources()'

These patchs are all related to 'alloc_dma_[rt]x_desc_resources()' functions.

The 2 first fix an error path where some resources are leaking. I've
separated them into 2 patches because the issues have been introduced by
2 deferent commits.

The 3rd patch is just a clean-up.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2017-07-11 13:33:54 -07:00
commit f4e27944f9
1 changed files with 7 additions and 7 deletions
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14
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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@ -1449,7 +1449,7 @@ static void free_dma_rx_desc_resources(struct stmmac_priv *priv)
static void free_dma_tx_desc_resources(struct stmmac_priv *priv)
{
u32 tx_count = priv->plat->tx_queues_to_use;
u32 queue = 0;
u32 queue;
/* Free TX queue resources */
for (queue = 0; queue < tx_count; queue++) {
@ -1498,7 +1498,7 @@ static int alloc_dma_rx_desc_resources(struct stmmac_priv *priv)
sizeof(dma_addr_t),
GFP_KERNEL);
if (!rx_q->rx_skbuff_dma)
return -ENOMEM;
goto err_dma;
rx_q->rx_skbuff = kmalloc_array(DMA_RX_SIZE,
sizeof(struct sk_buff *),
@ -1561,13 +1561,13 @@ static int alloc_dma_tx_desc_resources(struct stmmac_priv *priv)
sizeof(*tx_q->tx_skbuff_dma),
GFP_KERNEL);
if (!tx_q->tx_skbuff_dma)
return -ENOMEM;
goto err_dma;
tx_q->tx_skbuff = kmalloc_array(DMA_TX_SIZE,
sizeof(struct sk_buff *),
GFP_KERNEL);
if (!tx_q->tx_skbuff)
goto err_dma_buffers;
goto err_dma;
if (priv->extend_desc) {
tx_q->dma_etx = dma_zalloc_coherent(priv->device,
@ -1577,7 +1577,7 @@ static int alloc_dma_tx_desc_resources(struct stmmac_priv *priv)
&tx_q->dma_tx_phy,
GFP_KERNEL);
if (!tx_q->dma_etx)
goto err_dma_buffers;
goto err_dma;
} else {
tx_q->dma_tx = dma_zalloc_coherent(priv->device,
DMA_TX_SIZE *
@ -1586,13 +1586,13 @@ static int alloc_dma_tx_desc_resources(struct stmmac_priv *priv)
&tx_q->dma_tx_phy,
GFP_KERNEL);
if (!tx_q->dma_tx)
goto err_dma_buffers;
goto err_dma;
}
}
return 0;
err_dma_buffers:
err_dma:
free_dma_tx_desc_resources(priv);
return ret;