From 244d62be91ddcea55ec6d456dbb7f71d411d21f0 Mon Sep 17 00:00:00 2001 From: "Lendacky, Thomas" Date: Thu, 4 Dec 2014 11:52:35 -0600 Subject: amd-xgbe: Prevent Tx cleanup stall When performing Tx cleanup, the dirty index counter is compared to the current index counter as one of the tests used to determine when to stop cleanup. The "less than" test will fail when the current index counter rolls over to zero causing cleanup to never occur again. Update the test to a "not equal" to avoid this situation. Signed-off-by: Tom Lendacky Signed-off-by: David S. Miller --- drivers/net/ethernet/amd/xgbe/xgbe-drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/ethernet/amd') diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c index 2349ea970255..d0e35302410f 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c +++ b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c @@ -1554,7 +1554,7 @@ static int xgbe_tx_poll(struct xgbe_channel *channel) spin_lock_irqsave(&ring->lock, flags); while ((processed < XGBE_TX_DESC_MAX_PROC) && - (ring->dirty < ring->cur)) { + (ring->dirty != ring->cur)) { rdata = XGBE_GET_DESC_DATA(ring, ring->dirty); rdesc = rdata->rdesc; -- cgit v1.2.3