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be2net: add dma_mapping_error() check for dma_map_page()

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The driver does not check value returned by dma_map_page. The patch
fixes this.

v2: Removed the bugfix for non-bug ;-) (thanks Sathya)

Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Acked-by: Sathya Perla <Sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ivan Vecera 2014-01-15 11:11:34 +01:00 committed by David S. Miller
parent d9aee591b0
commit ba42fad096
1 changed files with 9 additions and 2 deletions
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11
drivers/net/ethernet/emulex/benet/be_main.c
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@ -1776,6 +1776,7 @@ static void be_post_rx_frags(struct be_rx_obj *rxo, gfp_t gfp)
struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
struct be_queue_info *rxq = &rxo->q;
struct page *pagep = NULL;
struct device *dev = &adapter->pdev->dev;
struct be_eth_rx_d *rxd;
u64 page_dmaaddr = 0, frag_dmaaddr;
u32 posted, page_offset = 0;
@ -1788,9 +1789,15 @@ static void be_post_rx_frags(struct be_rx_obj *rxo, gfp_t gfp)
rx_stats(rxo)->rx_post_fail++;
break;
}
page_dmaaddr = dma_map_page(&adapter->pdev->dev, pagep,
0, adapter->big_page_size,
page_dmaaddr = dma_map_page(dev, pagep, 0,
adapter->big_page_size,
DMA_FROM_DEVICE);
if (dma_mapping_error(dev, page_dmaaddr)) {
put_page(pagep);
pagep = NULL;
rx_stats(rxo)->rx_post_fail++;
break;
}
page_info->page_offset = 0;
} else {
get_page(pagep);