From: Eric W. Biederman Date: Sat, 15 Mar 2014 01:06:26 +0000 (-0700) Subject: s2io: Don't receive packets when the napi budget == 0 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=99a09c26a8f353bc35087ffa8cc47ffdd6d5d5bc;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git s2io: 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/neterion/s2io.c b/drivers/net/ethernet/neterion/s2io.c index 56e3a9d42bb2..d44fdb91808e 100644 --- a/drivers/net/ethernet/neterion/s2io.c +++ b/drivers/net/ethernet/neterion/s2io.c @@ -2914,6 +2914,9 @@ static int rx_intr_handler(struct ring_info *ring_data, int budget) struct RxD1 *rxdp1; struct RxD3 *rxdp3; + if (budget <= 0) + return napi_pkts; + get_info = ring_data->rx_curr_get_info; get_block = get_info.block_index; memcpy(&put_info, &ring_data->rx_curr_put_info, sizeof(put_info));