From 69c1f2c6f45a556361fd8e8d2d4eb20e2c8d3d95 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Pali=20Roh=C3=A1r?= Date: Thu, 18 Mar 2021 17:04:32 +0100 Subject: [PATCH] PCI: aardvark: Check return value of generic_handle_domain_irq() when processing INTx IRQ MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit It is possible that we receive spurious INTx interrupt. Check for the return value of generic_handle_domain_irq() when processing INTx IRQ. Signed-off-by: Pali Rohár Signed-off-by: Marek Behún --- drivers/pci/controller/pci-aardvark.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/pci/controller/pci-aardvark.c +++ b/drivers/pci/controller/pci-aardvark.c @@ -1441,7 +1441,9 @@ static void advk_pcie_handle_int(struct PCIE_ISR1_REG); virq = irq_find_mapping(pcie->irq_domain, i); - generic_handle_irq(virq); + if (generic_handle_irq(virq) == -EINVAL) + dev_err_ratelimited(&pcie->pdev->dev, "unexpected INT%c IRQ\n", + (char)i + 'A'); } }