Ensure that the PCI module is initialized when using the x86 specific module as

it makes use of gPCI which is initialized during pci module init. Might help
with #5936.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36745 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/kernel/bus_managers/pci/arch/x86/pci_arch_module.cpp

@@ -3,6 +3,7 @@
  *	Distributed under the terms of the MIT License.
  */
 
+#include <PCI.h>
 #include <PCI_x86.h>
 #include "pci_msi.h"
 
@@ -12,7 +13,17 @@ pci_arch_module_std_ops(int32 op, ...)
 {
 	switch (op) {
 		case B_MODULE_INIT:
+		{
+			module_info *dummy;
+			status_t result = get_module(B_PCI_MODULE_NAME, &dummy);
+			if (result != B_OK)
+				return result;
+
+			return B_OK;
+		}
+
 		case B_MODULE_UNINIT:
+			put_module(B_PCI_MODULE_NAME);
 			return B_OK;
 	}