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authorOliver Hartkopp <oliver@hartkopp.net>2009-09-15 01:31:34 -0700
committerDavid S. Miller <davem@davemloft.net>2009-09-15 01:31:34 -0700
commit481a8199142c050b72bff8a1956a49fd0a75bbe0 (patch)
tree66bcd9798738a760c9982d62b9a39b57774e8349 /drivers/net
parent0b6a05c1dbebe8c616e2e5b0f52b7a01fd792911 (diff)
downloadop-kernel-dev-481a8199142c050b72bff8a1956a49fd0a75bbe0.zip
op-kernel-dev-481a8199142c050b72bff8a1956a49fd0a75bbe0.tar.gz
can: fix NOHZ local_softirq_pending 08 warning
When using nanosleep() in an userspace application we get a ratelimit warning NOHZ: local_softirq_pending 08 for 10 times. The echo of CAN frames is done from process context and softirq context only. Therefore the usage of netif_rx() was wrong (for years). This patch replaces netif_rx() with netif_rx_ni() which has to be used from process/softirq context. It also adds a missing comment that can_send() must no be used from hardirq context. Signed-off-by: Oliver Hartkopp <oliver@hartkopp.net> Signed-off-by: Urs Thuermann <urs@isnogud.escape.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/can/vcan.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/can/vcan.c b/drivers/net/can/vcan.c
index 6971f6c..80ac5631 100644
--- a/drivers/net/can/vcan.c
+++ b/drivers/net/can/vcan.c
@@ -80,7 +80,7 @@ static void vcan_rx(struct sk_buff *skb, struct net_device *dev)
skb->dev = dev;
skb->ip_summed = CHECKSUM_UNNECESSARY;
- netif_rx(skb);
+ netif_rx_ni(skb);
}
static netdev_tx_t vcan_tx(struct sk_buff *skb, struct net_device *dev)
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