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_nv.c b/drivers/ata/sata_nv.c
index 55d6179..85ee499 100644
--- a/drivers/ata/sata_nv.c
+++ b/drivers/ata/sata_nv.c
@@ -2510,22 +2510,11 @@
 	nv_ck804_host_stop(host);
 }
 
-static int __init nv_init(void)
-{
-	return pci_register_driver(&nv_pci_driver);
-}
+module_pci_driver(nv_pci_driver);
 
-static void __exit nv_exit(void)
-{
-	pci_unregister_driver(&nv_pci_driver);
-}
-
-module_init(nv_init);
-module_exit(nv_exit);
 module_param_named(adma, adma_enabled, bool, 0444);
 MODULE_PARM_DESC(adma, "Enable use of ADMA (Default: false)");
 module_param_named(swncq, swncq_enabled, bool, 0444);
 MODULE_PARM_DESC(swncq, "Enable use of SWNCQ (Default: true)");
 module_param_named(msi, msi_enabled, bool, 0444);
 MODULE_PARM_DESC(msi, "Enable use of MSI (Default: false)");
-