From d1def91cd7fcc82ac0bea9a46b5e31a7a005ecb6 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Fri, 14 Mar 2014 18:09:01 -0700 Subject: tilepro: 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/tile/tilepro.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/net/ethernet/tile') diff --git a/drivers/net/ethernet/tile/tilepro.c b/drivers/net/ethernet/tile/tilepro.c index 7e33973487ee..b94449b4bd34 100644 --- a/drivers/net/ethernet/tile/tilepro.c +++ b/drivers/net/ethernet/tile/tilepro.c @@ -831,6 +831,9 @@ static int tile_net_poll(struct napi_struct *napi, int budget) unsigned int work = 0; + if (budget <= 0) + goto done; + while (priv->active) { int index = qup->__packet_receive_read; if (index == qsp->__packet_receive_queue.__packet_write) -- cgit v1.2.3