From: Mintz, Yuval <Yuval.Mintz@cavium.com>
Date: Tue, 14 Mar 2017 13:26:00 +0000 (+0200)
Subject: qed: Fix mapping leak on LL2 rx flow
X-Git-Tag: v4.1.12-107.0.20170801_2000~109
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=85efde6f6d3b46a6bb654dfc97a583835acabb4d;p=users%2Fjedix%2Flinux-maple.git

qed: Fix mapping leak on LL2 rx flow

Orabug: 25933053, 26439680

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: Brian Maly <brian.maly@oracle.com>
---

diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
index 62c6152c5a96..0d7f00881076 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
@@ -211,6 +211,8 @@ 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) {