Commit 37a68e00 authored by Felix Fietkau's avatar Felix Fietkau
Browse files

mt76: disable bh in mt76_dma_rx_poll 



Fixes potential RCU issues and avoids calling ieee80211_rx_napi with softirq
enabled.

Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
parent 2703bafc

drivers/net/wireless/mediatek/mt76/dma.c

+2 −0
Original line number Diff line number Diff line
@@ -538,6 +538,7 @@ mt76_dma_rx_poll(struct napi_struct *napi, int budget) 
	dev = container_of(napi->dev, struct mt76_dev, napi_dev);

	qid = napi - dev->napi;



	local_bh_disable();

	rcu_read_lock();



	do {
@@ -547,6 +548,7 @@ mt76_dma_rx_poll(struct napi_struct *napi, int budget) 
	} while (cur && done < budget);



	rcu_read_unlock();

	local_bh_enable();



	if (done < budget && napi_complete(napi))

		dev->drv->rx_poll_complete(dev, qid);