From 70e3bb504ccfe6ba725ab120bdb516d205d834f9 Mon Sep 17 00:00:00 2001 From: Divy Le Ray <divy@chelsio.com> Date: Tue, 17 Nov 2009 16:38:28 +0000 Subject: [PATCH] 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> --- drivers/net/cxgb3/sge.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/cxgb3/sge.c b/drivers/net/cxgb3/sge.c index f86612857a73..6366061712f4 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, -- GitLab