From d110ec4533261e7f9d89bfeeae80cc50fd9e7468 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Fri, 14 Mar 2014 18:08:21 -0700 Subject: [PATCH] tilegx: 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/tilegx.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/tile/tilegx.c b/drivers/net/ethernet/tile/tilegx.c index 17503da9f7a5..b43f1b3b9632 100644 --- a/drivers/net/ethernet/tile/tilegx.c +++ b/drivers/net/ethernet/tile/tilegx.c @@ -659,6 +659,9 @@ static int tile_net_poll(struct napi_struct *napi, int budget) struct info_mpipe *info_mpipe = container_of(napi, struct info_mpipe, napi); + if (budget <= 0) + goto done; + instance = info_mpipe->instance; while ((n = gxio_mpipe_iqueue_try_peek( &info_mpipe->iqueue, -- 2.20.1