ata: use module_pci_driver

This patch converts the drivers in drivers/ata/* to use module_pci_driver()
macro which makes the code smaller and a bit simpler.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: Mikael Pettersson <mikpe@it.uu.se>
Cc: Mark Lord <kernel@teksavvy.com>
Cc: Jeremy Higdon <jeremy@sgi.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/ata/sata_promise.c b/drivers/ata/sata_promise.c
index 000fcc9..489c817 100644
--- a/drivers/ata/sata_promise.c
+++ b/drivers/ata/sata_promise.c
@@ -1249,21 +1249,10 @@
 				 &pdc_ata_sht);
 }
 
-static int __init pdc_ata_init(void)
-{
-	return pci_register_driver(&pdc_ata_pci_driver);
-}
-
-static void __exit pdc_ata_exit(void)
-{
-	pci_unregister_driver(&pdc_ata_pci_driver);
-}
+module_pci_driver(pdc_ata_pci_driver);
 
 MODULE_AUTHOR("Jeff Garzik");
 MODULE_DESCRIPTION("Promise ATA TX2/TX4/TX4000 low-level driver");
 MODULE_LICENSE("GPL");
 MODULE_DEVICE_TABLE(pci, pdc_ata_pci_tbl);
 MODULE_VERSION(DRV_VERSION);
-
-module_init(pdc_ata_init);
-module_exit(pdc_ata_exit);