Revert "PCI: PCIE ASPM support"

[linux-2.6-omap-h63xx.git] / drivers / pci / dmar.c

diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c
index 5dfdfdac92e1bc83862707aab71d356d47a36eff..91b2dc956be5de68e1ebefe1585e6e79cea62fab 100644 (file)
--- a/drivers/pci/dmar.c
+++ b/drivers/pci/dmar.c
@@ -25,6 +25,7 @@
 
 #include <linux/pci.h>
 #include <linux/dmar.h>
+#include "iova.h"
 
 #undef PREFIX
 #define PREFIX "DMAR:"
@@ -263,8 +264,8 @@ parse_dmar_table(void)
        if (!dmar)
                return -ENODEV;
 
-       if (!dmar->width) {
-               printk (KERN_WARNING PREFIX "Zero: Invalid DMAR haw\n");
+       if (dmar->width < PAGE_SHIFT_4K - 1) {
+               printk(KERN_WARNING PREFIX "Invalid DMAR haw\n");
                return -EINVAL;
        }
 
@@ -301,11 +302,24 @@ parse_dmar_table(void)
 int __init dmar_table_init(void)
 {
 
-       parse_dmar_table();
+       int ret;
+
+       ret = parse_dmar_table();
+       if (ret) {
+               printk(KERN_INFO PREFIX "parse DMAR table failure.\n");
+               return ret;
+       }
+
        if (list_empty(&dmar_drhd_units)) {
                printk(KERN_INFO PREFIX "No DMAR devices found\n");
                return -ENODEV;
        }
+
+       if (list_empty(&dmar_rmrr_units)) {
+               printk(KERN_INFO PREFIX "No RMRR found\n");
+               return -ENODEV;
+       }
+
        return 0;
 }