Commit cf503e8f authored Sep 03, 2009 by Dhananjay Phadke Committed by David S. Miller Sep 03, 2009

netxen: fix infinite loop on dma mapping failure



Fix a perpetual while() loop in unwinding partial
mapped tx skb on dma mapping failure.

Reported-by: "Juha Leppanen" <juha_motorsportcom@luukku.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 270e57e1

drivers/net/netxen/netxen_nic_main.c

+2 −2

Original line number	Original line	Diff line number	Diff line
	@@ -1577,8 +1577,8 @@ netxen_map_tx_skb(struct pci_dev *pdev,
	return 0;		return 0;

	unwind:		unwind:
	while (i > 0) {		while (--i >= 0) {
	nf = &pbuf->frag_array[i];		nf = &pbuf->frag_array[i+1];
	pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);		pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
	}		}