net: mvneta: fix the Rx desc buffer DMA unmapping

With CONFIG_DMA_API_DEBUG enabled we now get a warning when using the
mvneta driver:

  mvneta d0030000.ethernet: DMA-API: device driver frees DMA memory with
  wrong function [device address=0x000000001165b000] [size=4096 bytes]
  [mapped as page] [unmapped as single]

This is because when using the s/w buffer management, the Rx descriptor
buffer is mapped with dma_map_page but unmapped with dma_unmap_single.
This patch fixes this by using the right unmapping function.

Fixes: 562e2f467e71 ("net: mvneta: Improve the buffer allocation method for SWBM")
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index bc80a678abc30e22910400c5c39f847317aac8ec..2db9708f2e2461d2c7f76fe56167294a86db9fc2 100644 (file)
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -2008,8 +2008,8 @@ static int mvneta_rx_swbm(struct napi_struct *napi,
                                skb_add_rx_frag(rxq->skb, frag_num, page,
                                                frag_offset, frag_size,
                                                PAGE_SIZE);
-                               dma_unmap_single(dev->dev.parent, phys_addr,
-                                                PAGE_SIZE, DMA_FROM_DEVICE);
+                               dma_unmap_page(dev->dev.parent, phys_addr,
+                                              PAGE_SIZE, DMA_FROM_DEVICE);
                                rxq->left_size -= frag_size;
                        }
                } else {