From: Eric W. Biederman Date: Sat, 15 Mar 2014 01:09:01 +0000 (-0700) Subject: tilepro: Don't receive packets when the napi budget == 0 X-Git-Tag: v3.15-rc1~113^2~145^2~3 X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=d1def91cd7fcc82ac0bea9a46b5e31a7a005ecb6;p=~emulex%2Finfiniband.git 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 --- diff --git a/drivers/net/ethernet/tile/tilepro.c b/drivers/net/ethernet/tile/tilepro.c index 7e33973487e..b94449b4bd3 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)