Commit 50ff44be authored Mar 11, 2014 by Eric W. Biederman Committed by David S. Miller Mar 13, 2014

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" <ebiederm@xmission.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 310c4d4e

drivers/net/ethernet/realtek/8139cp.c

+1 −4

Original line number	Diff line number	Diff line
		@@ -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;