diff options
| author | Lorenzo Bianconi <lorenzo@kernel.org> | 2026-01-22 13:39:45 +0300 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2026-03-23 12:23:00 +0300 |
| commit | 7aed20bd9fe427b192cce80a164429584b298bbe (patch) | |
| tree | 4e66439638ddb384e96f7e641d1b7327bc5f04c1 | |
| parent | 6b470f36616e3448d44b0ef4b1de2a3e3a31b5be (diff) | |
| download | linux-7aed20bd9fe427b192cce80a164429584b298bbe.tar.xz | |
wifi: mt76: mt7996: Fix NPU stop procedure
Move mt7996_npu_hw_stop routine before disabling rx NAPIs in order to
fix NPU stop procedure used during device L1 SER recovery.
Add missing usleep_range in mt7996_npu_hw_stop().
Fixes: 377aa17d2aedc ("wifi: mt76: mt7996: Add NPU offload support to MT7996 driver")
Tested-by: Kang Yang <kang.yang@airoha.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260122-mt76-npu-eagle-offload-v2-1-2374614c0de6@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7996/mac.c | 3 | ||||
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7996/npu.c | 23 |
2 files changed, 15 insertions, 11 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c index 9c1715f4a3b8..00c6045622e3 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c @@ -2504,6 +2504,7 @@ void mt7996_mac_reset_work(struct work_struct *work) if (mtk_wed_device_active(&dev->mt76.mmio.wed)) mtk_wed_device_stop(&dev->mt76.mmio.wed); + mt7996_npu_hw_stop(dev); ieee80211_stop_queues(mt76_hw(dev)); set_bit(MT76_RESET, &dev->mphy.state); @@ -2530,8 +2531,6 @@ void mt7996_mac_reset_work(struct work_struct *work) mutex_lock(&dev->mt76.mutex); - mt7996_npu_hw_stop(dev); - mt76_wr(dev, MT_MCU_INT_EVENT, MT_MCU_INT_EVENT_DMA_STOPPED); if (mt7996_wait_reset_state(dev, MT_MCU_CMD_RESET_DONE)) { diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/npu.c b/drivers/net/wireless/mediatek/mt76/mt7996/npu.c index 1422533e59c7..9c3b241aae38 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/npu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/npu.c @@ -320,33 +320,38 @@ unlock: int mt7996_npu_hw_stop(struct mt7996_dev *dev) { struct airoha_npu *npu; - int i, err; + int i, err = 0; u32 info; + mutex_lock(&dev->mt76.mutex); + npu = rcu_dereference_protected(dev->mt76.mmio.npu, &dev->mt76.mutex); if (!npu) - return 0; + goto unlock; err = mt76_npu_send_msg(npu, 4, WLAN_FUNC_SET_WAIT_INODE_TXRX_REG_ADDR, 0, GFP_KERNEL); if (err) - return err; + goto unlock; for (i = 0; i < 10; i++) { err = mt76_npu_get_msg(npu, 3, WLAN_FUNC_GET_WAIT_NPU_INFO, &info, GFP_KERNEL); - if (err) - continue; + if (!err && !info) + break; - if (info) { - err = -ETIMEDOUT; - continue; - } + err = -ETIMEDOUT; + usleep_range(10000, 15000); } if (!err) err = mt76_npu_send_msg(npu, 6, WLAN_FUNC_SET_WAIT_INODE_TXRX_REG_ADDR, 0, GFP_KERNEL); + else + dev_err(dev->mt76.dev, "npu stop failed\n"); +unlock: + mutex_unlock(&dev->mt76.mutex); + return err; } |