From: Kamal Heib kamalheib1@gmail.com
[ Upstream commit 85e1d42663a0c163002961d2685be952067b0dc2 ]
Fix memory leak in error path of mtk_add_mac() by make sure to free the allocated netdev.
Fixes: e3cbf478f846 ('staging: mt7621-eth: add the drivers core files') Signed-off-by: Kamal Heib kamalheib1@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/staging/mt7621-eth/mtk_eth_soc.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/mt7621-eth/mtk_eth_soc.c b/drivers/staging/mt7621-eth/mtk_eth_soc.c index 2c7a2e666bfb..381d9d270bf5 100644 --- a/drivers/staging/mt7621-eth/mtk_eth_soc.c +++ b/drivers/staging/mt7621-eth/mtk_eth_soc.c @@ -2012,8 +2012,10 @@ static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np) mac->hw_stats = devm_kzalloc(eth->dev, sizeof(*mac->hw_stats), GFP_KERNEL); - if (!mac->hw_stats) - return -ENOMEM; + if (!mac->hw_stats) { + err = -ENOMEM; + goto free_netdev; + } spin_lock_init(&mac->hw_stats->stats_lock); mac->hw_stats->reg_offset = id * MTK_STAT_OFFSET; } @@ -2037,7 +2039,8 @@ static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np) err = register_netdev(eth->netdev[id]); if (err) { dev_err(eth->dev, "error bringing up device\n"); - return err; + err = -ENOMEM; + goto free_netdev; } eth->netdev[id]->irq = eth->irq; netif_info(eth, probe, eth->netdev[id], @@ -2045,6 +2048,10 @@ static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np) eth->netdev[id]->base_addr, eth->netdev[id]->irq);
return 0; + +free_netdev: + free_netdev(eth->netdev[id]); + return err; }
static int mtk_probe(struct platform_device *pdev)