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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>
This commit is contained in:
Eric W. Biederman 2014-03-14 18:09:01 -07:00 committed by David S. Miller
parent d110ec4533
commit d1def91cd7
1 changed files with 3 additions and 0 deletions
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3
drivers/net/ethernet/tile/tilepro.c
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@ -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)