Patchwork [07/11] net: ll_temac: Fix DMA map size bug

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Submitter Michal Simek
Date Oct. 4, 2012, 6:14 p.m.
Message ID <1349374497-9540-7-git-send-email-monstr@monstr.eu>
Download mbox | patch
Permalink /patch/189233/
State Not Applicable
Delegated to: David Miller
Headers show

Comments

Michal Simek - Oct. 4, 2012, 6:14 p.m.
DMA allocates skb->len instead of headlen
which is used for DMA.
The same fix was applied to the axienet driver.

Signed-off-by: Michal Simek <monstr@monstr.eu>
CC: Anirudha Sarangi <anirudh@xilinx.com>
CC: John Linn <John.Linn@xilinx.com>
CC: Grant Likely <grant.likely@secretlab.ca>
CC: Rob Herring <rob.herring@calxeda.com>
CC: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/xilinx/ll_temac_main.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

Patch

diff --git a/drivers/net/ethernet/xilinx/ll_temac_main.c b/drivers/net/ethernet/xilinx/ll_temac_main.c
index 482b572..8786d92 100644
--- a/drivers/net/ethernet/xilinx/ll_temac_main.c
+++ b/drivers/net/ethernet/xilinx/ll_temac_main.c
@@ -710,8 +710,8 @@  static int temac_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 
 	cur_p->app0 |= STS_CTRL_APP0_SOP;
 	cur_p->len = skb_headlen(skb);
-	cur_p->phys = dma_map_single(ndev->dev.parent, skb->data, skb->len,
-				     DMA_TO_DEVICE);
+	cur_p->phys = dma_map_single(ndev->dev.parent, skb->data,
+				skb_headlen(skb), DMA_TO_DEVICE);
 	cur_p->app4 = (unsigned long)skb;
 
 	for (ii = 0; ii < num_frag; ii++) {