diff options
| author | Eric W. Biederman <ebiederm@xmission.com> | 2014-03-15 05:09:01 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-03-15 06:52:48 +0400 |
| commit | d1def91cd7fcc82ac0bea9a46b5e31a7a005ecb6 (patch) | |
| tree | ee08d7ef557b5e37911ff6381c26dce4506ec08d /drivers/net/ethernet/tile | |
| parent | d110ec4533261e7f9d89bfeeae80cc50fd9e7468 (diff) | |
| download | linux-d1def91cd7fcc82ac0bea9a46b5e31a7a005ecb6.tar.xz | |
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" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/tile')
| -rw-r--r-- | drivers/net/ethernet/tile/tilepro.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/tile/tilepro.c b/drivers/net/ethernet/tile/tilepro.c index 7e33973487ee..b94449b4bd34 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) |