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/pata_acpi.c b/drivers/ata/pata_acpi.c
index b63ca3b..09723b7 100644
--- a/drivers/ata/pata_acpi.c
+++ b/drivers/ata/pata_acpi.c
@@ -273,22 +273,10 @@
 #endif
 };
 
-static int __init pacpi_init(void)
-{
-	return pci_register_driver(&pacpi_pci_driver);
-}
-
-static void __exit pacpi_exit(void)
-{
-	pci_unregister_driver(&pacpi_pci_driver);
-}
-
-module_init(pacpi_init);
-module_exit(pacpi_exit);
+module_pci_driver(pacpi_pci_driver);
 
 MODULE_AUTHOR("Alan Cox");
 MODULE_DESCRIPTION("SCSI low-level driver for ATA in ACPI mode");
 MODULE_LICENSE("GPL");
 MODULE_DEVICE_TABLE(pci, pacpi_pci_tbl);
 MODULE_VERSION(DRV_VERSION);
-