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authorEric W. Biederman <ebiederm@xmission.com>2014-03-15 05:09:01 +0400
committerDavid S. Miller <davem@davemloft.net>2014-03-15 06:52:48 +0400
commitd1def91cd7fcc82ac0bea9a46b5e31a7a005ecb6 (patch)
treeee08d7ef557b5e37911ff6381c26dce4506ec08d /drivers/net/ethernet/tile
parentd110ec4533261e7f9d89bfeeae80cc50fd9e7468 (diff)
downloadlinux-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.c3
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)