netdev - [PATCH 2/3] ixgb: Add missing dma_mapping_error-call in ixgb_alloc_rx

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Date:	Sat, 16 Mar 2013 11:32:04 +0100
From:	Christoph Paasch <christoph.paasch@...ouvain.be>
To:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	Bruce Allan <bruce.w.allan@...el.com>,
	Alex Duyck <alexander.h.duyck@...el.com>
Cc:	e1000-devel@...ts.sourceforge.net, netdev@...r.kernel.org,
	David Miller <davem@...emloft.net>
Subject: [PATCH 2/3] ixgb: Add missing dma_mapping_error-call in ixgb_alloc_rx_buffers

After dma_map_single, dma_mapping_error must be called. It seems safe to
not free the skb allocated in this function, as the skb can be reused
later.

Additionally this patch fixes one coding-style error.

Signed-off-by: Christoph Paasch <christoph.paasch@...ouvain.be>
---
 drivers/net/ethernet/intel/ixgb/ixgb_main.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/ixgb/ixgb_main.c b/drivers/net/ethernet/intel/ixgb/ixgb_main.c
index e23f023..6662c7c 100644
--- a/drivers/net/ethernet/intel/ixgb/ixgb_main.c
+++ b/drivers/net/ethernet/intel/ixgb/ixgb_main.c
@@ -2155,6 +2155,10 @@ map_skb:
 		                                  skb->data,
 		                                  adapter->rx_buffer_len,
 						  DMA_FROM_DEVICE);
+		if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
+			adapter->alloc_rx_buff_failed++;
+			break;
+		}
 
 		rx_desc = IXGB_RX_DESC(*rx_ring, i);
 		rx_desc->buff_addr = cpu_to_le64(buffer_info->dma);
@@ -2164,7 +2168,8 @@ map_skb:
 		rx_desc->status = 0;
 
 
-		if (++i == rx_ring->count) i = 0;
+		if (++i == rx_ring->count)
+			i = 0;
 		buffer_info = &rx_ring->buffer_info[i];
 	}
 
-- 
1.8.1.227.g44fe835

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