From: Felix Fietkau <nbd@nbd.name>
Date: Mon, 7 Oct 2019 10:33:39 +0000 (+0200)
Subject: mt76: avoid enabling interrupt if NAPI poll is still pending
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=3e0705acd4de7821d42bea7fb01938ff05fd4d58;p=linux.git

mt76: avoid enabling interrupt if NAPI poll is still pending

if napi_complete() returns false, it means that polling is still pending.
Interrupts should not fire until the polling is no longer scheduled

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c
index 6442a45ba303e..3de744fb5e7a5 100644
--- a/drivers/net/wireless/mediatek/mt76/dma.c
+++ b/drivers/net/wireless/mediatek/mt76/dma.c
@@ -539,10 +539,8 @@ mt76_dma_rx_poll(struct napi_struct *napi, int budget)
 
 	rcu_read_unlock();
 
-	if (done < budget) {
-		napi_complete(napi);
+	if (done < budget && napi_complete(napi))
 		dev->drv->rx_poll_complete(dev, qid);
-	}
 
 	return done;
 }