[PATCH 4.17 207/324] net: macb: Free RX ring for all queues

[Greg Kroah-Hartman]

4.17-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Harini Katakam <harini.kata...@xilinx.com>

[ Upstream commit e50b770ea5c9eff0013e8ae714d20182ed50d5e6 ]

rx ring is allocated for all queues in macb_alloc_consistent.
Free the same for all queues instead of just Q0.

Signed-off-by: Harini Katakam <harini.kata...@xilinx.com>
Reviewed-by: Claudiu Beznea <claudiu.bez...@microchip.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Sasha Levin <alexander.le...@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/net/ethernet/cadence/macb_main.c |   11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -1818,13 +1818,7 @@ static void macb_free_consistent(struct
        struct macb_queue *queue;
        unsigned int q;
 
-       queue = &bp->queues[0];
        bp->macbgem_ops.mog_free_rx_buffers(bp);
-       if (queue->rx_ring) {
-               dma_free_coherent(&bp->pdev->dev, RX_RING_BYTES(bp),
-                               queue->rx_ring, queue->rx_ring_dma);
-               queue->rx_ring = NULL;
-       }
 
        for (q = 0, queue = bp->queues; q < bp->num_queues; ++q, ++queue) {
                kfree(queue->tx_skb);
@@ -1834,6 +1828,11 @@ static void macb_free_consistent(struct
                                          queue->tx_ring, queue->tx_ring_dma);
                        queue->tx_ring = NULL;
                }
+               if (queue->rx_ring) {
+                       dma_free_coherent(&bp->pdev->dev, RX_RING_BYTES(bp),
+                                         queue->rx_ring, queue->rx_ring_dma);
+                       queue->rx_ring = NULL;
+               }
        }
 }