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net: gemini: Fix memory leak in gmac_setup_txqs

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[ Upstream commit f37f710353677639bc5d37ee785335994adf2529 ]

In the implementation of gmac_setup_txqs() the allocated desc_ring is
leaked if TX queue base is not aligned. Release it via
dma_free_coherent.

Fixes: 4d5ae32f5e ("net: ethernet: Add a driver for Gemini gigabit ethernet")
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Navid Emamdoost 2019-12-14 19:10:44 -06:00 • committed by Greg Kroah-Hartman
commit 3740ae3cb4
1 changed files with 2 additions and 0 deletions
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2
drivers/net/ethernet/cortina/gemini.c
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@ -576,6 +576,8 @@ static int gmac_setup_txqs(struct net_device *netdev)
if (port->txq_dma_base & ~DMA_Q_BASE_MASK) {
dev_warn(geth->dev, "TX queue base is not aligned\n");
dma_free_coherent(geth->dev, len * sizeof(*desc_ring),
desc_ring, port->txq_dma_base);
kfree(skb_tab);
return -ENOMEM;
}