diff options
Diffstat (limited to 'pkgs/patches-linux-5.15/0010-PCI-mvebu-Disallow-mapping-interrupts-on-emulated-br.patch')
| -rw-r--r-- | pkgs/patches-linux-5.15/0010-PCI-mvebu-Disallow-mapping-interrupts-on-emulated-br.patch | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/pkgs/patches-linux-5.15/0010-PCI-mvebu-Disallow-mapping-interrupts-on-emulated-br.patch b/pkgs/patches-linux-5.15/0010-PCI-mvebu-Disallow-mapping-interrupts-on-emulated-br.patch new file mode 100644 index 0000000..cfcb1e5 --- /dev/null +++ b/pkgs/patches-linux-5.15/0010-PCI-mvebu-Disallow-mapping-interrupts-on-emulated-br.patch @@ -0,0 +1,51 @@ +From 7931a2a131998d990e5f9732fc3dc448ec672046 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org> +Date: Fri, 17 Sep 2021 13:42:10 +0200 +Subject: [PATCH 10/90] PCI: mvebu: Disallow mapping interrupts on emulated + bridges +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Interrupt support on mvebu emulated bridges is not implemented yet. + +So properly indicate return value to callers that they cannot request +interrupts from emulated bridge. + +Signed-off-by: Pali Rohár <pali@kernel.org> +Cc: stable@vger.kernel.org +--- + drivers/pci/controller/pci-mvebu.c | 10 ++++++++++ + 1 file changed, 10 insertions(+) + +diff --git a/drivers/pci/controller/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c +index 5bf1889cfb38..0a8b552364aa 100644 +--- a/drivers/pci/controller/pci-mvebu.c ++++ b/drivers/pci/controller/pci-mvebu.c +@@ -787,6 +787,15 @@ static struct pci_ops mvebu_pcie_ops = { + .write = mvebu_pcie_wr_conf, + }; + ++static int mvebu_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) ++{ ++ /* Interrupt support on mvebu emulated bridges is not implemented yet */ ++ if (dev->bus->number == 0) ++ return 0; /* Proper return code 0 == NO_IRQ */ ++ ++ return of_irq_parse_and_map_pci(dev, slot, pin); ++} ++ + static resource_size_t mvebu_pcie_align_resource(struct pci_dev *dev, + const struct resource *res, + resource_size_t start, +@@ -1279,6 +1288,7 @@ static int mvebu_pcie_probe(struct platform_device *pdev) + bridge->sysdata = pcie; + bridge->ops = &mvebu_pcie_ops; + bridge->align_resource = mvebu_pcie_align_resource; ++ bridge->map_irq = mvebu_pcie_map_irq; + + return pci_host_probe(bridge); + } +-- +2.34.1 + |