提交 176f792f 编写于 作者: E Eric W. Biederman 提交者: David S. Miller

tc35815: 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: N"Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 d1def91c
......@@ -1645,6 +1645,9 @@ static int tc35815_poll(struct napi_struct *napi, int budget)
int received = 0, handled;
u32 status;
if (budget <= 0)
return received;
spin_lock(&lp->rx_lock);
status = tc_readl(&tr->Int_Src);
do {
......
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