openwrtv3/target/linux/generic/patches-3.18/071-bgmac-activate-irqs-only-if-there-is-nothing-to-poll.patch

From 43f159c60a99318b1ef7d1d7c16c4dfdd06bfd90 Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Sun, 18 Jan 2015 19:49:59 +0100
Subject: [PATCH] bgmac: activate irqs only if there is nothing to poll

IRQs should only get activated when there is nothing to poll in the
queue any more and to after every poll.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/broadcom/bgmac.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -1167,10 +1167,10 @@ static int bgmac_poll(struct napi_struct
 		bgmac->int_status = 0;
 	}
 
-	if (handled < weight)
+	if (handled < weight) {
 		napi_complete(napi);
-
-	bgmac_chip_intrs_on(bgmac);
+		bgmac_chip_intrs_on(bgmac);
+	}
 
 	return handled;
 }