diff options
Diffstat (limited to 'target/linux/generic/pending-5.10/850-0005-PCI-aardvark-Check-return-value-of-generic_handle_do.patch')
| -rw-r--r-- | target/linux/generic/pending-5.10/850-0005-PCI-aardvark-Check-return-value-of-generic_handle_do.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/generic/pending-5.10/850-0005-PCI-aardvark-Check-return-value-of-generic_handle_do.patch b/target/linux/generic/pending-5.10/850-0005-PCI-aardvark-Check-return-value-of-generic_handle_do.patch new file mode 100644 index 0000000000..0428d30f08 --- /dev/null +++ b/target/linux/generic/pending-5.10/850-0005-PCI-aardvark-Check-return-value-of-generic_handle_do.patch @@ -0,0 +1,36 @@ +From 69c1f2c6f45a556361fd8e8d2d4eb20e2c8d3d95 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org> +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 <pali@kernel.org> +Signed-off-by: Marek Behún <kabel@kernel.org> +--- + drivers/pci/controller/pci-aardvark.c | 4 +++- + 1 file changed, 3 insertions(+), 1 deletion(-) + +diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c +index 01dfe70d9c2c..4be05b52d835 100644 +--- a/drivers/pci/controller/pci-aardvark.c ++++ b/drivers/pci/controller/pci-aardvark.c +@@ -1437,7 +1437,9 @@ 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 (generic_handle_irq(virq) == -EINVAL) ++ dev_err_ratelimited(&pcie->pdev->dev, "unexpected INT%c IRQ\n", ++ (char)i + 'A'); + } + } + +-- +2.34.1 + |