1 files changed, 7 insertions, 1 deletions

diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index eee3555ced7c..d6047c441034 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -635,6 +635,12 @@ static void __init early_cmdline_parse(void)
 /* ibm,dynamic-reconfiguration-memory property supported */
 #define OV5_DRCONF_MEMORY       0x20
 #define OV5_LARGE_PAGES         0x10    /* large pages supported */
+/* PCIe/MSI support.  Without MSI full PCIe is not supported */
+#ifdef CONFIG_PCI_MSI
+#define OV5_MSI                 0x01    /* PCIe/MSI support */
+#else
+#define OV5_MSI                 0x00
+#endif /* CONFIG_PCI_MSI */
 
 /*
  * The architecture vector has an array of PVR mask/value pairs,
@@ -679,7 +685,7 @@ static unsigned char ibm_architecture_vec[] = {
         /* option vector 5: PAPR/OF options */
         3 - 2,                          /* length */
         0,                              /* don't ignore, don't halt */
-        OV5_LPAR | OV5_SPLPAR | OV5_LARGE_PAGES | OV5_DRCONF_MEMORY,
+        OV5_LPAR | OV5_SPLPAR | OV5_LARGE_PAGES | OV5_DRCONF_MEMORY | OV5_MSI,
 };
 
 /* Old method - ELF header with PT_NOTE sections */