Merge branch 'napi_budget_zero'

Eric W. Biederman says:

====================
Don't receive packets when the napi budget == 0

To the best of understanding processing any received packets when the
napi budget == 0 is broken driver behavior.  At the same time I don't
think we have ever cared before so there are a handful of drivers that
need fixes.

I care now as I will shortly be using htis in netpoll to get the
tx queue processing without the rx queue processing.

Drivers that need fixes are few and far between, and so far I have only
found two of them.  More similar patches later if I find more drivers
that need fixes.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 4 deletions

diff --git a/drivers/net/ethernet/realtek/8139cp.c b/drivers/net/ethernet/realtek/8139cp.c
index a3c1daa7ad5c..2bc728e65e24 100644
--- a/drivers/net/ethernet/realtek/8139cp.c
+++ b/drivers/net/ethernet/realtek/8139cp.c
@@ -476,7 +476,7 @@ rx_status_loop:
 	rx = 0;
 	cpw16(IntrStatus, cp_rx_intr_mask);
 
-	while (1) {
+	while (rx < budget) {
 		u32 status, len;
 		dma_addr_t mapping, new_mapping;
 		struct sk_buff *skb, *new_skb;
@@ -554,9 +554,6 @@ rx_next:
 		else
 			desc->opts1 = cpu_to_le32(DescOwn | cp->rx_buf_sz);
 		rx_tail = NEXT_RX(rx_tail);
-
-		if (rx >= budget)
-			break;
 	}
 
 	cp->rx_tail = rx_tail;