Currently pcibios_init is running pci_fixup_irqs in order to assign
IRQs to PCI devices, this is only done once at boot-time and causes
devices hot-plugged after boot time to not be allocated an IRQ.
This is fixed in this patch-set by delaying the allocation untill
device enable time by registering the function to be called later.
Signed-off-by: Matthew Minter <matt@xxxxxxxxxxxx>
---
arch/tile/kernel/pci.c | 10 +++++++---
arch/tile/kernel/pci_gx.c | 10 +++++++---
2 files changed, 14 insertions(+), 6 deletions(-)
diff --git a/arch/tile/kernel/pci.c b/arch/tile/kernel/pci.c
index 9475a74..e151d80 100644
--- a/arch/tile/kernel/pci.c
+++ b/arch/tile/kernel/pci.c
@@ -313,9 +313,6 @@ int __init pcibios_init(void)
}
}
- /* Do machine dependent PCI interrupt routing */
- pci_fixup_irqs(pci_common_swizzle, tile_map_irq);
-
/*
* This comes from the generic Linux PCI driver.
*
@@ -369,6 +366,13 @@ int __init pcibios_init(void)
}
subsys_initcall(pcibios_init);
+int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge)
+{
+ bridge->swizzle_irq = pci_common_swizzle;
+ bridge->map_irq = tile_map_irq;
+ return 0;
+}
+
/*
* No bus fixups needed.
*/
diff --git a/arch/tile/kernel/pci_gx.c b/arch/tile/kernel/pci_gx.c
index 4c017d0..7eb3e2b 100644
--- a/arch/tile/kernel/pci_gx.c
+++ b/arch/tile/kernel/pci_gx.c
@@ -887,9 +887,6 @@ int __init pcibios_init(void)
next_busno = bus->busn_res.end + 1;
}
- /* Do machine dependent PCI interrupt routing */
- pci_fixup_irqs(pci_common_swizzle, tile_map_irq);
-
/*
* This comes from the generic Linux PCI driver.
*
@@ -1038,6 +1035,13 @@ alloc_mem_map_failed:
}
subsys_initcall(pcibios_init);
+int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge)
+{
+ bridge->swizzle_irq = pci_common_swizzle;
+ bridge->map_irq = tile_map_irq;
+ return 0;
+}
+
/* No bus fixups needed. */
void pcibios_fixup_bus(struct pci_bus *bus)
{
--
2.6.2
--
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