From: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Date: Thu, 22 Nov 2007 20:19:39 +0000 (+0100)
Subject: plip: use netif_rx_ni() for packet receive
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=f6ce5cca74b8681fdf1d7307edc66a7213b43f6f;p=linux-beck.git

plip: use netif_rx_ni() for packet receive

netif_rx is meant to be called from interrupts because it doesn't wake
up ksoftirqd.  For calling from outside interrupts, netif_rx_ni exists.

This fixes plip to use netif_rx_ni.  It fixes the infamous error "NOHZ:
local_softirq_panding 08" that happens on some machines with NOHZ and
plip --- it is caused by the fact that softirq is pending and ksoftirqd
is sleeping.

Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/net/plip.c b/drivers/net/plip.c
index 5071fcd8a0bd..baf2cbfc8863 100644
--- a/drivers/net/plip.c
+++ b/drivers/net/plip.c
@@ -663,7 +663,7 @@ plip_receive_packet(struct net_device *dev, struct net_local *nl,
 	case PLIP_PK_DONE:
 		/* Inform the upper layer for the arrival of a packet. */
 		rcv->skb->protocol=plip_type_trans(rcv->skb, dev);
-		netif_rx(rcv->skb);
+		netif_rx_ni(rcv->skb);
 		dev->last_rx = jiffies;
 		dev->stats.rx_bytes += rcv->length.h;
 		dev->stats.rx_packets++;