msi: introduce ARCH_SUPPORTS_MSI Kconfig option (rev2)

Allows architectures to advertise that they support MSI rather than listing
each architecture as a PCI_MSI dependency.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index 5ea5bc70cb82..70efe8f285a6 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -1,10 +1,14 @@
 #
 # PCI configuration
 #
+config ARCH_SUPPORTS_MSI
+        bool
+        default n
+
 config PCI_MSI
         bool "Message Signaled Interrupts (MSI and MSI-X)"
         depends on PCI
-        depends on (X86_LOCAL_APIC && X86_IO_APIC) || IA64 || SPARC64
+        depends on ARCH_SUPPORTS_MSI
         help
            This allows device drivers to enable MSI (Message Signaled
            Interrupts).  Message Signaled Interrupts enable a device to