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wifi: mt76: mt7915: release hif2 reference on probe IRQ failure

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The hif2 reference obtained by mt7915_pci_init_hif2() is only released on
error paths that key off dev->hif2, which is not assigned until after the
IRQ setup. If pci_alloc_irq_vectors() or the primary devm_request_irq()
fails, the reference leaks. Drop it explicitly on those paths via
mt7915_put_hif2().

Fixes: f68d67623d ("mt76: mt7915: add Wireless Ethernet Dispatch support")
Link: https://patch.msgid.link/20260727150434.1778520-4-nbd@nbd.name
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau
2026-08-01 14:49:43 +00:00
parent 15b960014f
commit 8370aebd26
1 changed files with 6 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/net/wireless/mediatek/mt76/mt7915/pci.c
+6 -2
View File
@@ -144,16 +144,20 @@ static int mt7915_pci_probe(struct pci_dev *pdev,
hif2 = mt7915_pci_init_hif2(pdev);
ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);
if (ret < 0)
if (ret < 0) {
mt7915_put_hif2(hif2);
goto free_device;
}
irq = pdev->irq;
}
ret = devm_request_irq(mdev->dev, irq, mt7915_irq_handler,
IRQF_SHARED, KBUILD_MODNAME, dev);
if (ret)
if (ret) {
mt7915_put_hif2(hif2);
goto free_wed_or_irq_vector;
}
/* master switch of PCIe tnterrupt enable */
mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);