From: Eric W. Biederman Date: Sat, 15 Mar 2014 01:08:21 +0000 (-0700) Subject: tilegx: Don't receive packets when the napi budget == 0 X-Git-Tag: v3.15-rc1~113^2~145^2~4 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d110ec4533261e7f9d89bfeeae80cc50fd9e7468;p=platform%2Fkernel%2Flinux-exynos.git 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 --- diff --git a/drivers/net/ethernet/tile/tilegx.c b/drivers/net/ethernet/tile/tilegx.c index 17503da..b43f1b3 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,