diff mbox series

[1/2] mt76: mt7915: add missing bh-disable around tx napi enable/schedule

Message ID 20220602195206.31061-1-nbd@nbd.name (mailing list archive)
State Accepted
Delegated to: Felix Fietkau
Headers show
Series [1/2] mt76: mt7915: add missing bh-disable around tx napi enable/schedule | expand

Commit Message

Felix Fietkau June 2, 2022, 7:52 p.m. UTC
napi_schedule() can call __raise_softirq_irqoff(), which can perform softirq
handling, so it must not be called in a pure process context with BH enabled.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
 drivers/net/wireless/mediatek/mt76/mt7915/mac.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
index 27b3080469a1..00d670fa26c9 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
@@ -2183,8 +2183,10 @@  void mt7915_mac_reset_work(struct work_struct *work)
 
 	mt76_worker_enable(&dev->mt76.tx_worker);
 
+	local_bh_disable();
 	napi_enable(&dev->mt76.tx_napi);
 	napi_schedule(&dev->mt76.tx_napi);
+	local_bh_enable();
 
 	ieee80211_wake_queues(mt76_hw(dev));
 	if (ext_phy)