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authorMatthew Wilcox <willy@linux.intel.com>2009-03-17 08:54:10 -0400
committerJesse Barnes <jbarnes@virtuousgeek.org>2009-03-20 10:48:14 -0700
commit1c8d7b0a562da06d3ebe83f01b1ed553205d1ae4 (patch)
tree79c84432f5aed5a08b3bef262a10d933daae6a9b /arch/powerpc/kernel/msi.c
parentf2440d9acbe866b917b16cc0f927366341ce9215 (diff)
downloadlinux-1c8d7b0a562da06d3ebe83f01b1ed553205d1ae4.tar.bz2
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/powerpc/kernel/msi.c')
-rw-r--r--arch/powerpc/kernel/msi.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/msi.c b/arch/powerpc/kernel/msi.c
index 3bb7d3dd28be..0c16e2a854e5 100644
--- a/arch/powerpc/kernel/msi.c
+++ b/arch/powerpc/kernel/msi.c
@@ -19,6 +19,10 @@ int arch_msi_check_device(struct pci_dev* dev, int nvec, int type)
return -ENOSYS;
}
+ /* PowerPC doesn't support multiple MSI yet */
+ if (type == PCI_CAP_ID_MSI && nvec > 1)
+ return 1;
+
if (ppc_md.msi_check_device) {
pr_debug("msi: Using platform check routine.\n");
return ppc_md.msi_check_device(dev, nvec, type);