amd8111e: 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>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/amd/amd8111e.c b/drivers/net/ethernet/amd/amd8111e.c
index 2061b471fd161b92cd9c4161fa15b955b63a28e2..26efaaa5e73fd292de512fc428e9af84126fcbb9 100644 (file)
--- a/drivers/net/ethernet/amd/amd8111e.c
+++ b/drivers/net/ethernet/amd/amd8111e.c
@@ -720,6 +720,9 @@ static int amd8111e_rx_poll(struct napi_struct *napi, int budget)
        int rx_pkt_limit = budget;
        unsigned long flags;
 
+       if (rx_pkt_limit <= 0)
+               goto rx_not_empty;
+
        do{
                /* process receive packets until we use the quota*/
                /* If we own the next entry, it's a new packet. Send it up. */