From: Sean Wang Date: Thu, 19 Feb 2026 00:39:59 +0000 (-0600) Subject: wifi: mt76: mt7921: handle MT7902 irq_map quirk with mutable copy X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=222606f43b587c9fb4ae063d04db146100c8951c;p=thirdparty%2Flinux.git wifi: mt76: mt7921: handle MT7902 irq_map quirk with mutable copy 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 Signed-off-by: Xiong Huang Signed-off-by: Sean Wang Link: https://patch.msgid.link/20260219004007.19733-3-sean.wang@kernel.org Signed-off-by: Felix Fietkau --- diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/pci.c b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c index 65c7fe6711370..5f857a21f362d 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;