[PATCH] 2.4 fix pci_generic_prep_mwi export breakage

[Bjorn Helgaas <bjorn.helgaas@hp.com>]

I think the recent change to pci.c to export pci_generic_prep_mwi() 
is incorrect.

pci_generic_prep_mwi() is only defined if !HAVE_ARCH_PCI_MWI,
so it is wrong to export it.  In particular, it breaks on
ia64, because we define HAVE_ARCH_PCI_MWI.

It looks to me like the following patch should be applied.  This
removes the export and in fact makes pci_generic_prep_mwi() static
as it is in 2.5.

===== drivers/pci/pci.c 1.45 vs edited =====
--- 1.45/drivers/pci/pci.c	Sun Aug 31 07:52:15 2003
+++ edited/drivers/pci/pci.c	Tue Sep 16 13:24:31 2003
@@ -921,7 +921,7 @@
  *
  * RETURNS: An appriopriate -ERRNO error value on eror, or zero for success.
  */
-int
+static int
 pci_generic_prep_mwi(struct pci_dev *dev)
 {
 	u8 cacheline_size;
@@ -2151,7 +2151,6 @@
 EXPORT_SYMBOL(pci_set_master);
 EXPORT_SYMBOL(pci_set_mwi);
 EXPORT_SYMBOL(pci_clear_mwi);
-EXPORT_SYMBOL(pci_generic_prep_mwi);
 EXPORT_SYMBOL(pci_set_dma_mask);
 EXPORT_SYMBOL(pci_dac_set_dma_mask);
 EXPORT_SYMBOL(pci_assign_resource);
===== include/linux/pci.h 1.34 vs edited =====
--- 1.34/include/linux/pci.h	Sun Aug 31 07:52:15 2003
+++ edited/include/linux/pci.h	Tue Sep 16 13:16:15 2003
@@ -628,7 +628,6 @@
 #define HAVE_PCI_SET_MWI
 int pci_set_mwi(struct pci_dev *dev);
 void pci_clear_mwi(struct pci_dev *dev);
-int pci_generic_prep_mwi(struct pci_dev *dev);
 int pci_set_dma_mask(struct pci_dev *dev, u64 mask);
 int pci_dac_set_dma_mask(struct pci_dev *dev, u64 mask);
 int pci_assign_resource(struct pci_dev *dev, int i);