qed: Fix mapping leak on LL2 rx flow

[ Upstream commit 752ecb2da11124a948567076b60767dc8034cfa5 ]

When receiving an Rx LL2 packet, qed fails to unmap the previous buffer.

Fixes: 0a7fb11c23c0 ("qed: Add Light L2 support");
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
index 62ae55b..7f00c7b 100644 (file)
--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
@@ -187,6 +187,8 @@ static void qed_ll2b_complete_rx_packet(struct qed_hwfn *p_hwfn,
        /* If need to reuse or there's no replacement buffer, repost this */
        if (rc)
                goto out_post;
+       dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr,
+                        cdev->ll2->rx_size, DMA_FROM_DEVICE);
 
        skb = build_skb(buffer->data, 0);
        if (!skb) {