edac: fix module initialization on several modules 2nd time

I implemented opstate_init() as a inline function in linux/edac.h.

added calling opstate_init() to:
	i82443bxgx_edac.c
	i82860_edac.c
	i82875p_edac.c
	i82975x_edac.c

I wrote a fixed patch of
edac-fix-module-initialization-on-several-modules.patch,
and tested building 2.6.25-rc7 with applying this. It was succeed.
I think the patch is now correct.

Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Hitoshi Mitake <h.mitake@gmail.com>
Signed-off-by: Doug Thompson <dougthompson@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/edac/i5000_edac.c b/drivers/edac/i5000_edac.c
index 5a85201..4a16b5b 100644
--- a/drivers/edac/i5000_edac.c
+++ b/drivers/edac/i5000_edac.c
@@ -1286,16 +1286,6 @@
 	if (PCI_FUNC(pdev->devfn) != 0)
 		return -ENODEV;
 
-	/* make sure error reporting method is sane */
-	switch (edac_op_state) {
-	case EDAC_OPSTATE_POLL:
-	case EDAC_OPSTATE_NMI:
-		break;
-	default:
-		edac_op_state = EDAC_OPSTATE_POLL;
-		break;
-	}
-
 	/* Ask the devices for the number of CSROWS and CHANNELS so
 	 * that we can calculate the memory resources, etc
 	 *
@@ -1478,6 +1468,9 @@
 
 	debugf2("MC: " __FILE__ ": %s()\n", __func__);
 
+       /* Ensure that the OPSTATE is set correctly for POLL or NMI */
+       opstate_init();
+
 	pci_rc = pci_register_driver(&i5000_driver);
 
 	return (pci_rc < 0) ? pci_rc : 0;
@@ -1501,5 +1494,6 @@
     ("Linux Networx (http://lnxi.com) Doug Thompson <norsk5@xmission.com>");
 MODULE_DESCRIPTION("MC Driver for Intel I5000 memory controllers - "
 		I5000_REVISION);
+
 module_param(edac_op_state, int, 0444);
 MODULE_PARM_DESC(edac_op_state, "EDAC Error Reporting state: 0=Poll,1=NMI");