[PATCH 03/11] wifi: mt76: mt7921: handle MT7902 irq_map quirk with mutable copy

[Philip Müller]

Hi Sean,

on Linus master tree we still have 'mt76_mmio_init(&dev->mt76, 
pcim_iomap_table(pdev)[0]);', hence your patch currently won't apply.

On 2/19/26 01:39, sean.wang at kernel.org wrote:
> From: Sean Wang <sean.wang at mediatek.com>
>
> MT7902 PCIe requires a different wm2_complete_mask value, so introduce a
> mutable per-device copy of the default irq_map and override the field
> only for this chip. Other devices continue using the shared const
> template.
>
> This is a prerequisite patch before enabling MT7902 PCIe support.
>
> Co-developed-by: Xiong Huang <xiong.huang at mediatek.com>
> Signed-off-by: Xiong Huang <xiong.huang at mediatek.com>
> Signed-off-by: Sean Wang <sean.wang at mediatek.com>
> ---
>   drivers/net/wireless/mediatek/mt76/mt7921/pci.c | 14 ++++++++++++++
>   1 file changed, 14 insertions(+)
>
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/pci.c b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
> index 65c7fe671137..5f857a21f362 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
> @@ -327,6 +327,20 @@ static int mt7921_pci_probe(struct pci_dev *pdev,
>   	dev->hif_ops = &mt7921_pcie_ops;
>   	dev->irq_map = &irq_map;
>   	mt76_mmio_init(&dev->mt76, regs);
> +
> +	if (id->device == 0x7902) {
> +		struct mt792x_irq_map *map;
> +
> +		/* MT7902 needs a mutable copy because wm2_complete_mask differs */
> +		map = devm_kmemdup(&pdev->dev, &irq_map,
> +				   sizeof(irq_map), GFP_KERNEL);
> +		if (!map)
> +			return -ENOMEM;
> +
> +		map->rx.wm2_complete_mask = 0;
> +		dev->irq_map = map;
> +	}
> +
>   	tasklet_init(&mdev->irq_tasklet, mt792x_irq_tasklet, (unsigned long)dev);
>   
>   	dev->phy.dev = dev;


-- 
Best, Philip