From c9324d1870f3a7d13297ae6b787c567606ab3c89 Mon Sep 17 00:00:00 2001 From: Giuseppe CAVALLARO Date: Thu, 4 Jul 2013 06:18:07 +0200 Subject: [PATCH] net:stmmac: fix memleak in the open method This patch is to fix a memory leak in the open method, it reviews error conditions freeing the resources previously allocated and not freed in cased of DMA failure. Signed-off-by: Giuseppe Cavallaro Signed-off-by: David S. Miller --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index f2d283d..f2ccb36 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -1552,7 +1552,7 @@ static int stmmac_open(struct net_device *dev) if (ret) { pr_err("%s: Cannot attach to PHY (error: %d)\n", __func__, ret); - goto open_error; + goto phy_error; } } @@ -1566,7 +1566,7 @@ static int stmmac_open(struct net_device *dev) ret = stmmac_init_dma_engine(priv); if (ret < 0) { pr_err("%s: DMA initialization failed\n", __func__); - goto open_error; + goto init_error; } /* Copy the MAC addr into the HW */ @@ -1585,7 +1585,7 @@ static int stmmac_open(struct net_device *dev) if (unlikely(ret < 0)) { pr_err("%s: ERROR: allocating the IRQ %d (error: %d)\n", __func__, dev->irq, ret); - goto open_error; + goto init_error; } /* Request the Wake IRQ in case of another line is used for WoL */ @@ -1595,7 +1595,7 @@ static int stmmac_open(struct net_device *dev) if (unlikely(ret < 0)) { pr_err("%s: ERROR: allocating the WoL IRQ %d (%d)\n", __func__, priv->wol_irq, ret); - goto open_error_wolirq; + goto wolirq_error; } } @@ -1606,7 +1606,7 @@ static int stmmac_open(struct net_device *dev) if (unlikely(ret < 0)) { pr_err("%s: ERROR: allocating the LPI IRQ %d (%d)\n", __func__, priv->lpi_irq, ret); - goto open_error_lpiirq; + goto lpiirq_error; } } @@ -1664,17 +1664,17 @@ static int stmmac_open(struct net_device *dev) return 0; -open_error_lpiirq: +lpiirq_error: if (priv->wol_irq != dev->irq) free_irq(priv->wol_irq, dev); - -open_error_wolirq: +wolirq_error: free_irq(dev->irq, dev); -open_error: +init_error: + free_dma_desc_resources(priv); if (priv->phydev) phy_disconnect(priv->phydev); - +phy_error: clk_disable_unprepare(priv->stmmac_clk); return ret; -- 2.7.4