mt76: mt7615: do not set MT76_STATE_PM at bootstrap

Remove MT76_STATE_PM in mt7615_init_device() and introduce
__mt7663s_mcu_drv_pmctrl for fw loading in mt7663s.
This patch fixes a crash at bootstrap for device (e.g. mt7622) that do
not support runtime-pm

Fixes: 7f2bc8ba11a0 ("mt76: connac: introduce wake counter for fw_pmctrl synchronization")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/e5a2618574007113d844874420f7855891abf167.1621085028.git.lorenzo@kernel.org

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/init.c b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
index 86341d1..d20f05a 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/mt7615/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
@@ -510,7 +510,6 @@ void mt7615_init_device(struct mt7615_dev *dev)
        mutex_init(&dev->pm.mutex);
        init_waitqueue_head(&dev->pm.wait);
        spin_lock_init(&dev->pm.txq_lock);
-       set_bit(MT76_STATE_PM, &dev->mphy.state);
        INIT_DELAYED_WORK(&dev->mphy.mac_work, mt7615_mac_work);
        INIT_DELAYED_WORK(&dev->phy.scan_work, mt7615_scan_work);
        INIT_DELAYED_WORK(&dev->coredump.work, mt7615_coredump_work);

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/sdio_mcu.c b/drivers/net/wireless/mediatek/mt76/mt7615/sdio_mcu.c
index 17fe418..d1be78b 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/mt7615/sdio_mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/sdio_mcu.c
@@ -51,16 +51,13 @@ mt7663s_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
        return ret;
 }
 
-static int mt7663s_mcu_drv_pmctrl(struct mt7615_dev *dev)
+static int __mt7663s_mcu_drv_pmctrl(struct mt7615_dev *dev)
 {
        struct sdio_func *func = dev->mt76.sdio.func;
        struct mt76_phy *mphy = &dev->mt76.phy;
        u32 status;
        int ret;
 
-       if (!test_and_clear_bit(MT76_STATE_PM, &mphy->state))
-               goto out;
-
        sdio_claim_host(func);
 
        sdio_writel(func, WHLPCR_FW_OWN_REQ_CLR, MCR_WHLPCR, NULL);
@@ -76,13 +73,21 @@ static int mt7663s_mcu_drv_pmctrl(struct mt7615_dev *dev)
        }
 
        sdio_release_host(func);
-
-out:
        dev->pm.last_activity = jiffies;
 
        return 0;
 }
 
+static int mt7663s_mcu_drv_pmctrl(struct mt7615_dev *dev)
+{
+       struct mt76_phy *mphy = &dev->mt76.phy;
+
+       if (test_and_clear_bit(MT76_STATE_PM, &mphy->state))
+               return __mt7663s_mcu_drv_pmctrl(dev);
+
+       return 0;
+}
+
 static int mt7663s_mcu_fw_pmctrl(struct mt7615_dev *dev)
 {
        struct sdio_func *func = dev->mt76.sdio.func;
@@ -123,7 +128,7 @@ int mt7663s_mcu_init(struct mt7615_dev *dev)
        struct mt7615_mcu_ops *mcu_ops;
        int ret;
 
-       ret = mt7663s_mcu_drv_pmctrl(dev);
+       ret = __mt7663s_mcu_drv_pmctrl(dev);
        if (ret)
                return ret;
 

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/usb_mcu.c b/drivers/net/wireless/mediatek/mt76/mt7615/usb_mcu.c
index c55698f..028ff43 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/mt7615/usb_mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/usb_mcu.c
@@ -55,10 +55,7 @@ int mt7663u_mcu_init(struct mt7615_dev *dev)
 
        dev->mt76.mcu_ops = &mt7663u_mcu_ops,
 
-       /* usb does not support runtime-pm */
-       clear_bit(MT76_STATE_PM, &dev->mphy.state);
        mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
-
        if (test_and_clear_bit(MT76_STATE_POWER_OFF, &dev->mphy.state)) {
                mt7615_mcu_restart(&dev->mt76);
                if (!mt76_poll_msec(dev, MT_CONN_ON_MISC,