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authorIvan Vecera <ivecera@redhat.com>2014-01-15 11:11:34 +0100
committerDavid S. Miller <davem@davemloft.net>2014-01-15 16:50:32 -0800
commitba42fad0964a41f0830e80c1b6be49c1e6bfcc01 (patch)
tree1855dfebb3c7f90e843895adbc9485808a5eb095
parentd9aee591b0f06bd44cd577b757d3f267bc35fe4d (diff)
downloadlinux-ba42fad0964a41f0830e80c1b6be49c1e6bfcc01.tar.gz
be2net: add dma_mapping_error() check for dma_map_page()
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>
-rw-r--r--drivers/net/ethernet/emulex/benet/be_main.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index bf40fdaecfa..a37039d353c 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -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);