It is possible that we receive spurious INTx interrupt. So add needed check before calling generic_handle_irq() function. Signed-off-by: Pali Rohár <pali@xxxxxxxxxx> Reviewed-by: Marek Behún <kabel@xxxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx --- drivers/pci/controller/pci-aardvark.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c index 36fcc077ec72..59f91fad2481 100644 --- a/drivers/pci/controller/pci-aardvark.c +++ b/drivers/pci/controller/pci-aardvark.c @@ -1226,7 +1226,11 @@ static void advk_pcie_handle_int(struct advk_pcie *pcie) PCIE_ISR1_REG); virq = irq_find_mapping(pcie->irq_domain, i); - generic_handle_irq(virq); + if (virq) + generic_handle_irq(virq); + else + dev_err_ratelimited(&pcie->pdev->dev, "unexpected INT%c IRQ\n", + (char)i+'A'); } } -- 2.20.1
