--- zzzz-none-000/linux-2.6.39.4/drivers/pci/probe.c	2011-08-03 19:43:28.000000000 +0000
+++ puma6-atom-6490-729/linux-2.6.39.4/drivers/pci/probe.c	2021-11-10 13:38:15.000000000 +0000
@@ -163,15 +163,18 @@
 			struct resource *res, unsigned int pos)
 {
 	u32 l, sz, mask;
-	u16 orig_cmd;
 
-	mask = type ? PCI_ROM_ADDRESS_MASK : ~0;
+#ifndef CONFIG_ARCH_GEN3
+	u16 orig_cmd;
 
 	if (!dev->mmio_always_on) {
 		pci_read_config_word(dev, PCI_COMMAND, &orig_cmd);
 		pci_write_config_word(dev, PCI_COMMAND,
 			orig_cmd & ~(PCI_COMMAND_MEMORY | PCI_COMMAND_IO));
 	}
+#endif
+
+	mask = type ? PCI_ROM_ADDRESS_MASK : ~0;
 
 	res->name = pci_name(dev);
 
@@ -180,9 +183,10 @@
 	pci_read_config_dword(dev, pos, &sz);
 	pci_write_config_dword(dev, pos, l);
 
+#ifndef CONFIG_ARCH_GEN3
 	if (!dev->mmio_always_on)
 		pci_write_config_word(dev, PCI_COMMAND, orig_cmd);
-
+#endif
 	/*
 	 * All bits set in sz means the device isn't working properly.
 	 * If the BAR isn't implemented, all bits must be 0.  If it's a