diff options
| author | Michael S. Tsirkin <mst@mellanox.co.il> | 2006-02-14 19:52:22 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-03-24 01:35:14 +0300 |
| commit | 6e325a62a0a228cd0222783802b53cce04551776 (patch) | |
| tree | 5609f9e841024ca57ba8ee7a919955c7589444c7 /drivers/pci | |
| parent | e5548e960f38557825e50806b52cb24c9e730aa2 (diff) | |
| download | linux-6e325a62a0a228cd0222783802b53cce04551776.tar.xz | |
[PATCH] PCI: make MSI quirk inheritable from the pci bus
It turns out AMD 8131 quirk only affects MSI for devices behind the 8131 bridge.
Handle this by adding a flags field in pci_bus, inherited from parent to child.
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/msi.c | 3 | ||||
| -rw-r--r-- | drivers/pci/probe.c | 1 | ||||
| -rw-r--r-- | drivers/pci/quirks.c | 7 |
3 files changed, 9 insertions, 2 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index d5a67c1bcb98..4de1c17ee573 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -703,6 +703,9 @@ int pci_enable_msi(struct pci_dev* dev) if (dev->no_msi) return status; + if (dev->bus->bus_flags & PCI_BUS_FLAGS_NO_MSI) + return -EINVAL; + temp = dev->irq; status = msi_init(); diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 3bc0fcd71d03..542e7dfb371b 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -347,6 +347,7 @@ pci_alloc_child_bus(struct pci_bus *parent, struct pci_dev *bridge, int busnr) child->parent = parent; child->ops = parent->ops; child->sysdata = parent->sysdata; + child->bus_flags = parent->bus_flags; child->bridge = get_device(&bridge->dev); child->class_dev.class = &pcibus_class; diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index d71c31df7fdf..4970f47be72c 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -575,8 +575,11 @@ static void __init quirk_amd_8131_ioapic(struct pci_dev *dev) { unsigned char revid, tmp; - pci_msi_quirk = 1; - printk(KERN_WARNING "PCI: MSI quirk detected. pci_msi_quirk set.\n"); + if (dev->subordinate) { + printk(KERN_WARNING "PCI: MSI quirk detected. " + "PCI_BUS_FLAGS_NO_MSI set for subordinate bus.\n"); + dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; + } if (nr_ioapics == 0) return; |