PCI: Revert "PCI: i386/x86_84: disable PCI resource decode on device disable"

This reverts commit 53e4d30dd6.

It was found that it caused unneeded problems (see
http://bugzilla.kernel.org/show_bug.cgi?id=7082 for details of one such
issue.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

arch/i386/pci/common.c

@@ -343,7 +343,6 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
 
 void pcibios_disable_device (struct pci_dev *dev)
 {
-	pcibios_disable_resources(dev);
 	if (pcibios_disable_irq)
 		pcibios_disable_irq(dev);
 }

arch/i386/pci/i386.c

@@ -242,15 +242,6 @@ int pcibios_enable_resources(struct pci_dev *dev, int mask)
 	return 0;
 }
 
-void pcibios_disable_resources(struct pci_dev *dev)
-{
-	u16 cmd;
-
-	pci_read_config_word(dev, PCI_COMMAND, &cmd);
-	cmd &= ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
-	pci_write_config_word(dev, PCI_COMMAND, cmd);
-}
-
 /*
  *  If we set up a device for bus mastering, we need to check the latency
  *  timer as certain crappy BIOSes forget to set it properly.

arch/i386/pci/pci.h

@@ -43,7 +43,6 @@ extern unsigned int pcibios_max_latency;
 
 void pcibios_resource_survey(void);
 int pcibios_enable_resources(struct pci_dev *, int);
-void pcibios_disable_resources(struct pci_dev *);
 
 /* pci-pc.c */