From f37f710353677639bc5d37ee785335994adf2529 Mon Sep 17 00:00:00 2001
From: Navid Emamdoost <navid.emamdoost@gmail.com>
Date: Sat, 14 Dec 2019 19:10:44 -0600
Subject: [PATCH] net: gemini: Fix memory leak in gmac_setup_txqs
Git-commit: f37f710353677639bc5d37ee785335994adf2529
Patch-mainline: v5.5-rc3
References: git-fixes
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: 4d5ae32f5e1e ("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>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/net/ethernet/cortina/gemini.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/cortina/gemini.c b/drivers/net/ethernet/cortina/gemini.c
index a8f4c69252ff..2814b96751b4 100644
--- a/drivers/net/ethernet/cortina/gemini.c
+++ b/drivers/net/ethernet/cortina/gemini.c
@@ -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;
}
--
2.16.4