From 50ff44be401b4d78388024b3e425e979904f304e Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Tue, 11 Mar 2014 14:31:43 -0700 Subject: [PATCH] 8139cp: Don't receive packets when the napi budget == 0 Processing any incoming packets with a with a napi budget of 0 is incorrect driver behavior. This matters as netpoll will shortly call drivers with a budget of 0 to avoid receive packet processing happening in hard irq context. Signed-off-by: "Eric W. Biederman" Signed-off-by: David S. Miller --- drivers/net/ethernet/realtek/8139cp.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/net/ethernet/realtek/8139cp.c b/drivers/net/ethernet/realtek/8139cp.c index a3c1daa..2bc728e 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; -- 2.7.4