Commit 62e04f8a authored by Felix Fietkau's avatar Felix Fietkau
Browse files

mt76x2: disable WLAN core before probe 



If the WLAN core is still active during initialization, it might cause
the MCU or DMA to hang. This can happen during soft reboot, so disable
the core + clock early to avoid this issue.

Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
parent d6500cf3

drivers/net/wireless/mediatek/mt76/mt76x2_init_common.c

+4 −0
Original line number Diff line number Diff line
@@ -39,6 +39,9 @@ void mt76x2_reset_wlan(struct mt76x2_dev *dev, bool enable) 
{

	u32 val;



	if (!enable)

		goto out;



	val = mt76_rr(dev, MT_WLAN_FUN_CTRL);



	val &= ~MT_WLAN_FUN_CTRL_FRC_WL_ANT_SEL;
@@ -54,6 +57,7 @@ void mt76x2_reset_wlan(struct mt76x2_dev *dev, bool enable) 
	mt76_wr(dev, MT_WLAN_FUN_CTRL, val);

	udelay(20);



out:

	mt76x2_set_wlan_state(dev, enable);

}

EXPORT_SYMBOL_GPL(mt76x2_reset_wlan);

drivers/net/wireless/mediatek/mt76/mt76x2_pci.c

+1 −0
Original line number Diff line number Diff line
@@ -53,6 +53,7 @@ mt76pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) 
		return -ENOMEM;



	mt76_mmio_init(&dev->mt76, pcim_iomap_table(pdev)[0]);

	mt76x2_reset_wlan(dev, false);



	dev->mt76.rev = mt76_rr(dev, MT_ASIC_VERSION);

	dev_info(dev->mt76.dev, "ASIC revision: %08x\n", dev->mt76.rev);

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