diff options
Diffstat (limited to 'target/linux/generic/backport-5.10/821-v5.13-let-pci-host-bridges-declar-their-reliance-on-msi-domains.patch')
| -rw-r--r-- | target/linux/generic/backport-5.10/821-v5.13-let-pci-host-bridges-declar-their-reliance-on-msi-domains.patch | 44 |
1 files changed, 0 insertions, 44 deletions
diff --git a/target/linux/generic/backport-5.10/821-v5.13-let-pci-host-bridges-declar-their-reliance-on-msi-domains.patch b/target/linux/generic/backport-5.10/821-v5.13-let-pci-host-bridges-declar-their-reliance-on-msi-domains.patch deleted file mode 100644 index ee1acf4b9c..0000000000 --- a/target/linux/generic/backport-5.10/821-v5.13-let-pci-host-bridges-declar-their-reliance-on-msi-domains.patch +++ /dev/null @@ -1,44 +0,0 @@ -From 94e89b145371b68fa0ea294855adebcd03e0522e Mon Sep 17 00:00:00 2001 -From: Marc Zyngier <maz@kernel.org> -Date: Tue, 30 Mar 2021 16:11:41 +0100 -Subject: PCI/MSI: Let PCI host bridges declare their reliance on MSI domains - -There is a whole class of host bridges that cannot know whether -MSIs will be provided or not, as they rely on other blocks -to provide the MSI functionnality, using MSI domains. This is -the case for example on systems that use the ARM GIC architecture. - -Introduce a new attribute ('msi_domain') indicating that implicit -dependency, and use this property to set the NO_MSI flag when -no MSI domain is found at probe time. - -Link: https://lore.kernel.org/r/20210330151145.997953-11-maz@kernel.org -Signed-off-by: Marc Zyngier <maz@kernel.org> -Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> -Acked-by: Bjorn Helgaas <bhelgaas@google.com> ---- - drivers/pci/probe.c | 2 ++ - include/linux/pci.h | 1 + - 2 files changed, 3 insertions(+) - ---- a/drivers/pci/probe.c -+++ b/drivers/pci/probe.c -@@ -925,6 +925,8 @@ static int pci_register_host_bridge(stru - device_enable_async_suspend(bus->bridge); - pci_set_bus_of_node(bus); - pci_set_bus_msi_domain(bus); -+ if (bridge->msi_domain && !dev_get_msi_domain(&bus->dev)) -+ bus->bus_flags |= PCI_BUS_FLAGS_NO_MSI; - - if (!parent) - set_dev_node(bus->bridge, pcibus_to_node(bus)); ---- a/include/linux/pci.h -+++ b/include/linux/pci.h -@@ -548,6 +548,7 @@ struct pci_host_bridge { - unsigned int native_dpc:1; /* OS may use PCIe DPC */ - unsigned int preserve_config:1; /* Preserve FW resource setup */ - unsigned int size_windows:1; /* Enable root bus sizing */ -+ unsigned int msi_domain:1; /* Bridge wants MSI domain */ - - /* Resource alignment requirements */ - resource_size_t (*align_resource)(struct pci_dev *dev, |