MIPS: Octeon: Disallow MSI-X interrupt and fall back to MSI interrupts.

MSI-X interrupts are not supported yet for Octeon, return error if
MSI-X interrupts are requested by driver so that the driver will fall
back to use MSI interrupts.

Signed-off-by: Chandrakala Chavva <cchavva@caviumnetworks.com>
To: linux-mips@linux-mips.org
Cc: David Daney <ddaney@caviumnetworks.com>
Patchwork: https://patchwork.linux-mips.org/patch/1506/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David Daney <ddaney@caviumnetworks.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/mips/include/asm/pci.h b/arch/mips/include/asm/pci.h
index 3beea1479b43..576397c69920 100644
--- a/arch/mips/include/asm/pci.h
+++ b/arch/mips/include/asm/pci.h
@@ -140,6 +140,11 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
         return channel ? 15 : 14;
 }
 
+#ifdef CONFIG_CPU_CAVIUM_OCTEON
+/* MSI arch hook for OCTEON */
+#define arch_setup_msi_irqs arch_setup_msi_irqs
+#endif
+
 extern int pci_probe_only;
 
 extern char * (*pcibios_plat_setup)(char *str);