IOATDMA: fix section mismatches

Rename struct pci_driver data so that false section mismatch warnings won't
be produced.

Sam, ISTM that depending on variable names is the weakest & worst part of
modpost section checking.  Should __init_refok work here?  I got build
errors when I tried to use it, probably because the struct pci_driver probe
and remove methods are not marked "__init_refok".

WARNING: drivers/dma/ioatdma.o(.data+0x10): Section mismatch: reference to .init.text: (between 'ioat_pci_drv' and 'ioat_pci_tbl')
WARNING: drivers/dma/ioatdma.o(.data+0x14): Section mismatch: reference to .exit.text: (between 'ioat_pci_drv' and 'ioat_pci_tbl')
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Chris Leech <christopher.leech@intel.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/dma/ioatdma.c

@@ -556,7 +556,7 @@ static struct pci_device_id ioat_pci_tbl[] = {
 	{ 0, }
 };
 
-static struct pci_driver ioat_pci_drv = {
+static struct pci_driver ioat_pci_driver = {
 	.name 	= "ioatdma",
 	.id_table = ioat_pci_tbl,
 	.probe	= ioat_probe,
@@ -699,7 +699,7 @@ static int __devinit ioat_probe(struct pci_dev *pdev,
 	if (err)
 		goto err_set_dma_mask;
 
-	err = pci_request_regions(pdev, ioat_pci_drv.name);
+	err = pci_request_regions(pdev, ioat_pci_driver.name);
 	if (err)
 		goto err_request_regions;
 
@@ -828,14 +828,14 @@ static int __init ioat_init_module(void)
 	/* if forced, worst case is that rmmod hangs */
 	__unsafe(THIS_MODULE);
 
-	return pci_register_driver(&ioat_pci_drv);
+	return pci_register_driver(&ioat_pci_driver);
 }
 
 module_init(ioat_init_module);
 
 static void __exit ioat_exit_module(void)
 {
-	pci_unregister_driver(&ioat_pci_drv);
+	pci_unregister_driver(&ioat_pci_driver);
 }
 
 module_exit(ioat_exit_module);