From ba7e46ef9d4550f76efb70739728c50bbf94c3a9 Mon Sep 17 00:00:00 2001 From: Ezequiel Garcia Date: Fri, 30 May 2014 13:40:06 -0300 Subject: [PATCH] net: mvneta: Fix missing DMA region unmap The Tx descriptor release code currently calls dma_unmap_single() and dev_kfree_skb_any() if the descriptor is associated with a non-NULL skb. This is true only for the last fragment of the packet. This is wrong, however, since every descriptor buffer is DMA mapped and needs to be unmapped. Signed-off-by: Ezequiel Garcia Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/mvneta.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c index 57a2e76835c0b6..f95e7cadb01bf7 100644 --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -1291,11 +1291,10 @@ static void mvneta_txq_bufs_free(struct mvneta_port *pp, mvneta_txq_inc_get(txq); - if (!skb) - continue; - dma_unmap_single(pp->dev->dev.parent, tx_desc->buf_phys_addr, tx_desc->data_size, DMA_TO_DEVICE); + if (!skb) + continue; dev_kfree_skb_any(skb); } }