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| author | Matthew Wilcox <willy@linux.intel.com> | 2009-03-17 08:54:10 -0400 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-03-20 10:48:14 -0700 |
| commit | 1c8d7b0a562da06d3ebe83f01b1ed553205d1ae4 (patch) | |
| tree | 79c84432f5aed5a08b3bef262a10d933daae6a9b /arch/x86/kernel/io_apic.c | |
| parent | f2440d9acbe866b917b16cc0f927366341ce9215 (diff) | |
| download | lwn-1c8d7b0a562da06d3ebe83f01b1ed553205d1ae4.tar.gz lwn-1c8d7b0a562da06d3ebe83f01b1ed553205d1ae4.zip | |
PCI MSI: Add support for multiple MSI
Add the new API pci_enable_msi_block() to allow drivers to
request multiple MSI and reimplement pci_enable_msi in terms of
pci_enable_msi_block. Ensure that the architecture back ends don't
have to know about multiple MSI.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'arch/x86/kernel/io_apic.c')
| -rw-r--r-- | arch/x86/kernel/io_apic.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kernel/io_apic.c b/arch/x86/kernel/io_apic.c index bc7ac4da90d7..a09549a6321b 100644 --- a/arch/x86/kernel/io_apic.c +++ b/arch/x86/kernel/io_apic.c @@ -3510,6 +3510,10 @@ int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) int index = 0; #endif + /* x86 doesn't support multiple MSI yet */ + if (type == PCI_CAP_ID_MSI && nvec > 1) + return 1; + irq_want = nr_irqs_gsi; sub_handle = 0; list_for_each_entry(msidesc, &dev->msi_list, list) { |