diff options
Diffstat (limited to 'nixos/modules/omnia-kernel-patches/0049-PCI-aardvark-Dispose-bridge-irq-prior-to-removing-br.patch')
| -rw-r--r-- | nixos/modules/omnia-kernel-patches/0049-PCI-aardvark-Dispose-bridge-irq-prior-to-removing-br.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/nixos/modules/omnia-kernel-patches/0049-PCI-aardvark-Dispose-bridge-irq-prior-to-removing-br.patch b/nixos/modules/omnia-kernel-patches/0049-PCI-aardvark-Dispose-bridge-irq-prior-to-removing-br.patch new file mode 100644 index 0000000..95519e9 --- /dev/null +++ b/nixos/modules/omnia-kernel-patches/0049-PCI-aardvark-Dispose-bridge-irq-prior-to-removing-br.patch @@ -0,0 +1,41 @@ +From f771fdb6b6dfeab92087c7e3dbc27794b1066585 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org> +Date: Wed, 24 Aug 2022 15:59:49 +0200 +Subject: [PATCH 49/53] PCI: aardvark: Dispose bridge irq prior to removing + bridge 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 bridge irq is 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: 815bc3136867 ("PCI: aardvark: Use separate INTA interrupt for emulated root bridge") +Signed-off-by: Pali Rohár <pali@kernel.org> +--- + drivers/pci/controller/pci-aardvark.c | 5 +++++ + 1 file changed, 5 insertions(+) + +diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c +index 671d89fd91fc..65cd1095984f 100644 +--- a/drivers/pci/controller/pci-aardvark.c ++++ b/drivers/pci/controller/pci-aardvark.c +@@ -1574,6 +1574,11 @@ static int advk_pcie_init_rp_irq_domain(struct advk_pcie *pcie) + + static void advk_pcie_remove_rp_irq_domain(struct advk_pcie *pcie) + { ++ int virq; ++ ++ virq = irq_find_mapping(pcie->rp_irq_domain, 0); ++ if (virq > 0) ++ irq_dispose_mapping(virq); + irq_domain_remove(pcie->rp_irq_domain); + } + +-- +2.37.3 + |