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authorDivy Le Ray <divy@chelsio.com>2009-11-17 16:38:28 +0000
committerDavid S. Miller <davem@davemloft.net>2009-11-18 05:11:14 -0800
commit70e3bb504ccfe6ba725ab120bdb516d205d834f9 (patch)
tree901ee7ceb689f00d9fc899b45e1eefb1a238dcfe
parent4acc5a8eb42c3a5a7df570face5f03fb37fff349 (diff)
cxgb3: fix premature page unmap
unmap Rx page only when guaranteed that this page won't be used anymore to allocate rx page chunks. Signed-off-by: Divy Le Ray <divy@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/cxgb3/sge.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/cxgb3/sge.c b/drivers/net/cxgb3/sge.c
index f86612857a7..6366061712f 100644
--- a/drivers/net/cxgb3/sge.c
+++ b/drivers/net/cxgb3/sge.c
@@ -879,7 +879,7 @@ recycle:
pci_dma_sync_single_for_cpu(adap->pdev, dma_addr, len,
PCI_DMA_FROMDEVICE);
(*sd->pg_chunk.p_cnt)--;
- if (!*sd->pg_chunk.p_cnt)
+ if (!*sd->pg_chunk.p_cnt && sd->pg_chunk.page != fl->pg_chunk.page)
pci_unmap_page(adap->pdev,
sd->pg_chunk.mapping,
fl->alloc_size,
@@ -2088,7 +2088,7 @@ static void lro_add_page(struct adapter *adap, struct sge_qset *qs,
PCI_DMA_FROMDEVICE);
(*sd->pg_chunk.p_cnt)--;
- if (!*sd->pg_chunk.p_cnt)
+ if (!*sd->pg_chunk.p_cnt && sd->pg_chunk.page != fl->pg_chunk.page)
pci_unmap_page(adap->pdev,
sd->pg_chunk.mapping,
fl->alloc_size,