diff mbox series

mt76: mt7921: add missing bh-disable around rx napi schedule

Message ID e409d1226c837d609b80611a569ff3cf93b88093.1654241613.git.lorenzo@kernel.org (mailing list archive)
State Accepted
Delegated to: Felix Fietkau
Headers show
Series mt76: mt7921: add missing bh-disable around rx napi schedule | expand

Commit Message

Lorenzo Bianconi June 3, 2022, 7:35 a.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: Lorenzo Bianconi <lorenzo@kernel.org>
---
 drivers/net/wireless/mediatek/mt76/mt7921/mac.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
index a630ddbf19e5..01ed779d3976 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
@@ -1538,8 +1538,10 @@  void mt7921_pm_wake_work(struct work_struct *work)
 			mt76_connac_pm_dequeue_skbs(mphy, &dev->pm);
 			mt76_worker_schedule(&mdev->sdio.txrx_worker);
 		} else {
+			local_bh_disable();
 			mt76_for_each_q_rx(mdev, i)
 				napi_schedule(&mdev->napi[i]);
+			local_bh_enable();
 			mt76_connac_pm_dequeue_skbs(mphy, &dev->pm);
 			mt7921_mcu_tx_cleanup(dev);
 		}