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PCI: mediatek: Fix IRQ domain leak when MSI allocation fails

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In mtk_pcie_init_irq_domain(), if mtk_pcie_allocate_msi_domains()
fails after port->irq_domain has been successfully created via
irq_domain_create_linear(), the function returns directly without
cleaning up the allocated IRQ domain, resulting in a resource leak.

Add irq_domain_remove() call in the error path to properly release the
INTx IRQ domain before returning the error.

Fixes: 43e6409db6 ("PCI: mediatek: Add MSI support for MT2712 and MT7622")
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://patch.msgid.link/20251119023308.476-1-vulab@iscas.ac.cn
This commit is contained in:
Haotian Zhang 2025-11-19 10:33:08 +08:00 committed by Manivannan Sadhasivam
parent 8f0b4cce44
commit 7f0cdcddf8
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/pci/controller/pcie-mediatek.c
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@ -585,8 +585,10 @@ static int mtk_pcie_init_irq_domain(struct mtk_pcie_port *port,
if (IS_ENABLED(CONFIG_PCI_MSI)) {
ret = mtk_pcie_allocate_msi_domains(port);
if (ret)
if (ret) {
irq_domain_remove(port->irq_domain);
return ret;
}
}
return 0;