diff options
Diffstat (limited to 'nixos/modules/omnia-kernel-patches/0048-PCI-aardvark-Dispose-INTx-irqs-prior-to-removing-INT.patch')
| -rw-r--r-- | nixos/modules/omnia-kernel-patches/0048-PCI-aardvark-Dispose-INTx-irqs-prior-to-removing-INT.patch | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/nixos/modules/omnia-kernel-patches/0048-PCI-aardvark-Dispose-INTx-irqs-prior-to-removing-INT.patch b/nixos/modules/omnia-kernel-patches/0048-PCI-aardvark-Dispose-INTx-irqs-prior-to-removing-INT.patch new file mode 100644 index 0000000..4ad24e9 --- /dev/null +++ b/nixos/modules/omnia-kernel-patches/0048-PCI-aardvark-Dispose-INTx-irqs-prior-to-removing-INT.patch @@ -0,0 +1,44 @@ +From 83765ecae23eaebcf1821ee49acf4e600cf0ac78 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org> +Date: Sat, 9 Jul 2022 16:55:54 +0200 +Subject: [PATCH 48/53] PCI: aardvark: Dispose INTx irqs prior to removing INTx + domain +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Documentation for irq_domain_remove() says that all mapping within the +domain must be disposed prior to domain remove. + +Currently INTx irqs are not disposed in pci-aardvark.c device unbind callback +which cause that kernel crashes after unloading driver and trying to read +/sys/kernel/debug/irq/irqs/<num> or /proc/interrupts. + +Fixes: 526a76991b7b ("PCI: aardvark: Implement driver 'remove' function and allow to build it as module") +Signed-off-by: Pali Rohár <pali@kernel.org> +--- + drivers/pci/controller/pci-aardvark.c | 8 ++++++++ + 1 file changed, 8 insertions(+) + +diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c +index 4834198cc86b..671d89fd91fc 100644 +--- a/drivers/pci/controller/pci-aardvark.c ++++ b/drivers/pci/controller/pci-aardvark.c +@@ -1528,6 +1528,14 @@ static int advk_pcie_init_irq_domain(struct advk_pcie *pcie) + + static void advk_pcie_remove_irq_domain(struct advk_pcie *pcie) + { ++ int virq, i; ++ ++ for (i = 0; i < PCI_NUM_INTX; i++) { ++ virq = irq_find_mapping(pcie->irq_domain, i); ++ if (virq > 0) ++ irq_dispose_mapping(virq); ++ } ++ + irq_domain_remove(pcie->irq_domain); + } + +-- +2.37.3 + |