[PATCH] mt76: mt7615: do not set MT76_STATE_PM at bootstrap

[PATCH] mt76: mt7615: do not set MT76_STATE_PM at bootstrap

[Lorenzo Bianconi]

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: 129fac01ffe85 ("mt76: connac: introduce wake counter for fw_pmctrl synchronization")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
 .../net/wireless/mediatek/mt76/mt7615/init.c  |  1 -
 .../wireless/mediatek/mt76/mt7615/sdio_mcu.c  | 19 ++++++++++++-------
 .../wireless/mediatek/mt76/mt7615/usb_mcu.c   |  3 ---
 3 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/init.c b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
index 86341d1f82f3..d20f05a7717d 100644
--- 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 17fe4187d1de..d1be78b0711c 100644
--- 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 c55698f9c49a..028ff432d811 100644
--- 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,
-- 
2.30.2

Re: [PATCH] mt76: mt7615: do not set MT76_STATE_PM at bootstrap

[Kalle Valo]

Lorenzo Bianconi <lorenzo@kernel.org> wrote:

> 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: 129fac01ffe85 ("mt76: connac: introduce wake counter for fw_pmctrl synchronization")
> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>

Lorenzo, you wanted to have this to v5.13, right?

Fixes tag is wrong:

Git commit not found or invalid id: 129fac01ffe85

Please provide me the correct commit id and I can fix it during commit.

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/3ff8e1901f38a943c4ca487a93d036ed368b46e1.1619543861.git.lorenzo@kernel.org/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches

Re: [PATCH] mt76: mt7615: do not set MT76_STATE_PM at bootstrap

[Lorenzo Bianconi]

[-- Attachment #1: Type: text/plain, Size: 962 bytes --]

> Lorenzo Bianconi <lorenzo@kernel.org> wrote:
> 
> > 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: 129fac01ffe85 ("mt76: connac: introduce wake counter for fw_pmctrl synchronization")
> > Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
> 
> Lorenzo, you wanted to have this to v5.13, right?
> 

yes, right

> Fixes tag is wrong:

ops, sorry. Fixed in v2

Regards,
Lorenzo

> 
> Git commit not found or invalid id: 129fac01ffe85
> 
> Please provide me the correct commit id and I can fix it during commit.
> 
> -- 
> https://patchwork.kernel.org/project/linux-wireless/patch/3ff8e1901f38a943c4ca487a93d036ed368b46e1.1619543861.git.lorenzo@kernel.org/
> 
> https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
> 

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