watchdog: Use module_pci_driver

This patch converts the PCI watchdog drivers so that they use the
module_pci_driver() macro. This makes the code smaller and simpler.
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Cc: Thomas Mingarelli <thomas.mingarelli@hp.com>
Cc: Marc Vertes <marc.vertes@sigfox.com>

drivers/watchdog/hpwdt.c

@@ -861,16 +861,6 @@ static struct pci_driver hpwdt_driver = {
 	.remove = __devexit_p(hpwdt_exit),
 };
 
-static void __exit hpwdt_cleanup(void)
-{
-	pci_unregister_driver(&hpwdt_driver);
-}
-
-static int __init hpwdt_init(void)
-{
-	return pci_register_driver(&hpwdt_driver);
-}
-
 MODULE_AUTHOR("Tom Mingarelli");
 MODULE_DESCRIPTION("hp watchdog driver");
 MODULE_LICENSE("GPL");
@@ -889,5 +879,4 @@ module_param(allow_kdump, int, 0);
 MODULE_PARM_DESC(allow_kdump, "Start a kernel dump after NMI occurs");
 #endif /* !CONFIG_HPWDT_NMI_DECODING */
 
-module_init(hpwdt_init);
-module_exit(hpwdt_cleanup);
+module_pci_driver(hpwdt_driver);

drivers/watchdog/i6300esb.c

@@ -492,19 +492,7 @@ static struct pci_driver esb_driver = {
 	.shutdown       = esb_shutdown,
 };
 
-static int __init watchdog_init(void)
-{
-	return pci_register_driver(&esb_driver);
-}
-
-static void __exit watchdog_cleanup(void)
-{
-	pci_unregister_driver(&esb_driver);
-	pr_info("Watchdog Module Unloaded\n");
-}
-
-module_init(watchdog_init);
-module_exit(watchdog_cleanup);
+module_pci_driver(esb_driver);
 
 MODULE_AUTHOR("Ross Biro and David Härdeman");
 MODULE_DESCRIPTION("Watchdog driver for Intel 6300ESB chipsets");

drivers/watchdog/pcwd_pci.c

@@ -707,6 +707,7 @@ static int __devinit pcipcwd_card_init(struct pci_dev *pdev,
 		goto err_out_disable_device;
 	}
 
+	spin_lock_init(&pcipcwd_private.io_lock);
 	pcipcwd_private.pdev = pdev;
 	pcipcwd_private.io_addr = pci_resource_start(pdev, 0);
 
@@ -814,22 +815,7 @@ static struct pci_driver pcipcwd_driver = {
 	.remove		= __devexit_p(pcipcwd_card_exit),
 };
 
-static int __init pcipcwd_init_module(void)
-{
-	spin_lock_init(&pcipcwd_private.io_lock);
-
-	return pci_register_driver(&pcipcwd_driver);
-}
-
-static void __exit pcipcwd_cleanup_module(void)
-{
-	pci_unregister_driver(&pcipcwd_driver);
-
-	pr_info("Watchdog Module Unloaded\n");
-}
-
-module_init(pcipcwd_init_module);
-module_exit(pcipcwd_cleanup_module);
+module_pci_driver(pcipcwd_driver);
 
 MODULE_AUTHOR("Wim Van Sebroeck <wim@iguana.be>");
 MODULE_DESCRIPTION("Berkshire PCI-PC Watchdog driver");

drivers/watchdog/via_wdt.c

@@ -202,6 +202,9 @@ static int __devinit wdt_probe(struct pci_dev *pdev,
 		goto err_out_release;
 	}
 
+	if (timeout < 1 || timeout > WDT_TIMEOUT_MAX)
+		timeout = WDT_TIMEOUT;
+
 	wdt_dev.timeout = timeout;
 	watchdog_set_nowayout(&wdt_dev, nowayout);
 	if (readl(wdt_mem) & VIA_WDT_FIRED)
@@ -250,20 +253,7 @@ static struct pci_driver wdt_driver = {
 	.remove		= __devexit_p(wdt_remove),
 };
 
-static int __init wdt_init(void)
-{
-	if (timeout < 1 || timeout > WDT_TIMEOUT_MAX)
-		timeout = WDT_TIMEOUT;
-	return pci_register_driver(&wdt_driver);
-}
-
-static void __exit wdt_exit(void)
-{
-	pci_unregister_driver(&wdt_driver);
-}
-
-module_init(wdt_init);
-module_exit(wdt_exit);
+module_pci_driver(wdt_driver);
 
 MODULE_AUTHOR("Marc Vertes");
 MODULE_DESCRIPTION("Driver for watchdog timer on VIA chipset");

drivers/watchdog/wdt_pci.c

@@ -739,39 +739,7 @@ static struct pci_driver wdtpci_driver = {
 	.remove		= __devexit_p(wdtpci_remove_one),
 };
 
-
-/**
- *	wdtpci_cleanup:
- *
- *	Unload the watchdog. You cannot do this with any file handles open.
- *	If your watchdog is set to continue ticking on close and you unload
- *	it, well it keeps ticking. We won't get the interrupt but the board
- *	will not touch PC memory so all is fine. You just have to load a new
- *	module in xx seconds or reboot.
- */
-
-static void __exit wdtpci_cleanup(void)
-{
-	pci_unregister_driver(&wdtpci_driver);
-}
-
-
-/**
- *	wdtpci_init:
- *
- *	Set up the WDT watchdog board. All we have to do is grab the
- *	resources we require and bitch if anyone beat us to them.
- *	The open() function will actually kick the board off.
- */
-
-static int __init wdtpci_init(void)
-{
-	return pci_register_driver(&wdtpci_driver);
-}
-
-
-module_init(wdtpci_init);
-module_exit(wdtpci_cleanup);
+module_pci_driver(wdtpci_driver);
 
 MODULE_AUTHOR("JP Nollmann, Alan Cox");
 MODULE_DESCRIPTION("Driver for the ICS PCI-WDT500/501 watchdog cards");