Commit ccc57aac authored Jun 26, 2008 by Atsushi Nemoto Committed by Jeff Garzik Jun 27, 2008

tc35815: Fix receiver hangup on Rx FIFO overflow

On Rx FIFO overflow error, the controller consume a buffer descriptor
but currently the driver does not give it back to the controller.
This results unrecoverable 'Buffer List Exhausted' condition. This
patch fix this problem by moving a "fbl_count--" line to proper place.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

parent 59524a37

drivers/net/tc35815.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1736,7 +1736,6 @@ tc35815_rx(struct net_device *dev)
		skb = lp->rx_skbs[cur_bd].skb;
		prefetch(skb->data);
		lp->rx_skbs[cur_bd].skb = NULL;
		lp->fbl_count--;
		pci_unmap_single(lp->pci_dev,
		lp->rx_skbs[cur_bd].skb_dma,
		RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
		@@ -1792,6 +1791,7 @@ tc35815_rx(struct net_device *dev)
		#ifdef TC35815_USE_PACKEDBUFFER
		while (lp->fbl_curid != id)
		#else
		lp->fbl_count--;
		while (lp->fbl_count < RX_BUF_NUM)
		#endif
		{

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