diff options
| author | Florian Fainelli <f.fainelli@gmail.com> | 2017-08-24 16:01:13 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-08-24 18:23:21 -0700 |
| commit | c2062ee3d9615828109ffe8089fbf69bed394d05 (patch) | |
| tree | a9caed4a4de4a9c9f238fd6ab03c572c92807ea1 | |
| parent | d4fec855905fa8bd5fb1c59f73ad2d74a944876a (diff) | |
net: systemport: Free DMA coherent descriptors on errors
In case bcm_sysport_init_tx_ring() is not able to allocate ring->cbs, we
would return with an error, and call bcm_sysport_fini_tx_ring() and it
would see that ring->cbs is NULL and do nothing. This would leak the
coherent DMA descriptor area, so we need to free it on error before
returning.
Reported-by: Eric Dumazet <edumazet@gmail.com>
Fixes: 80105befdb4b ("net: systemport: add Broadcom SYSTEMPORT Ethernet MAC driver")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/broadcom/bcmsysport.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c index e6add99cc31c..c28fa5a8734c 100644 --- a/drivers/net/ethernet/broadcom/bcmsysport.c +++ b/drivers/net/ethernet/broadcom/bcmsysport.c @@ -1346,6 +1346,8 @@ static int bcm_sysport_init_tx_ring(struct bcm_sysport_priv *priv, ring->cbs = kcalloc(size, sizeof(struct bcm_sysport_cb), GFP_KERNEL); if (!ring->cbs) { + dma_free_coherent(kdev, sizeof(struct dma_desc), + ring->desc_cpu, ring->desc_dma); netif_err(priv, hw, priv->netdev, "CB allocation failed\n"); return -ENOMEM; } |