[WATCHDOG] rc32434_wdt: clean-up driver

Clean-up the rc32434 driver code:
	- name the platform driver rc32434_wdt_driver
	- Replace KBUILD_MODNAME ": " with PFX define.
	- Cleanup include files
	- Order the ioctl's
Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

drivers/watchdog/rc32434_wdt.c

@@ -17,22 +17,22 @@
  *
  */
 
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/fs.h>
-#include <linux/mm.h>
-#include <linux/miscdevice.h>
-#include <linux/watchdog.h>
-#include <linux/reboot.h>
-#include <linux/smp_lock.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/uaccess.h>
-
-#include <asm/bootinfo.h>
-#include <asm/time.h>
-#include <asm/mach-rc32434/integ.h>
+#include <linux/module.h>		/* For module specific items */
+#include <linux/moduleparam.h>		/* For new moduleparam's */
+#include <linux/types.h>		/* For standard types (like size_t) */
+#include <linux/errno.h>		/* For the -ENODEV/... values */
+#include <linux/kernel.h>		/* For printk/panic/... */
+#include <linux/fs.h>			/* For file operations */
+#include <linux/miscdevice.h>		/* For MODULE_ALIAS_MISCDEV
+							(WATCHDOG_MINOR) */
+#include <linux/watchdog.h>		/* For the watchdog specific items */
+#include <linux/init.h>			/* For __init/__exit/... */
+#include <linux/platform_device.h>	/* For platform_driver framework */
+#include <linux/uaccess.h>		/* For copy_to_user/put_user/... */
+
+#include <asm/mach-rc32434/integ.h>	/* For the Watchdog registers */
+
+#define PFX KBUILD_MODNAME ": "
 
 #define VERSION "0.4"
 
@@ -90,12 +90,16 @@ static void rc32434_wdt_start(void)
 	or = 1 << RC32434_WTC_EN;
 
 	SET_BITS(wdt_reg->wtc, or, nand);
+
+	printk(KERN_INFO PFX "Started watchdog timer.\n");
 }
 
 static void rc32434_wdt_stop(void)
 {
 	/* Disable WDT */
 	SET_BITS(wdt_reg->wtc, 0, 1 << RC32434_WTC_EN);
+
+	printk(KERN_INFO PFX "Stopped watchdog timer.\n");
 }
 
 static int rc32434_wdt_set(int new_timeout)
@@ -103,8 +107,7 @@ static int rc32434_wdt_set(int new_timeout)
 	int max_to = WTCOMP2SEC((u32)-1);
 
 	if (new_timeout < 0 || new_timeout > max_to) {
-		printk(KERN_ERR KBUILD_MODNAME
-			": timeout value must be between 0 and %d",
+		printk(KERN_ERR PFX "timeout value must be between 0 and %d",
 			max_to);
 		return -EINVAL;
 	}
@@ -137,11 +140,10 @@ static int rc32434_wdt_release(struct inode *inode, struct file *file)
 {
 	if (expect_close == 42) {
 		rc32434_wdt_stop();
-		printk(KERN_INFO KBUILD_MODNAME ": disabling watchdog timer\n");
 		module_put(THIS_MODULE);
 	} else {
-		printk(KERN_CRIT KBUILD_MODNAME
-			": device closed unexpectedly. WDT will not stop !\n");
+		printk(KERN_CRIT PFX
+			"device closed unexpectedly. WDT will not stop!\n");
 		rc32434_wdt_ping();
 	}
 	clear_bit(0, &rc32434_wdt_device.inuse);
@@ -185,8 +187,9 @@ static long rc32434_wdt_ioctl(struct file *file, unsigned int cmd,
 		.identity =		"RC32434_WDT Watchdog",
 	};
 	switch (cmd) {
-	case WDIOC_KEEPALIVE:
-		rc32434_wdt_ping();
+	case WDIOC_GETSUPPORT:
+		if (copy_to_user(argp, &ident, sizeof(ident)))
+			return -EFAULT;
 		break;
 	case WDIOC_GETSTATUS:
 	case WDIOC_GETBOOTSTATUS:
@@ -194,10 +197,6 @@ static long rc32434_wdt_ioctl(struct file *file, unsigned int cmd,
 		if (copy_to_user(argp, &value, sizeof(int)))
 			return -EFAULT;
 		break;
-	case WDIOC_GETSUPPORT:
-		if (copy_to_user(argp, &ident, sizeof(ident)))
-			return -EFAULT;
-		break;
 	case WDIOC_SETOPTIONS:
 		if (copy_from_user(&value, argp, sizeof(int)))
 			return -EFAULT;
@@ -212,6 +211,9 @@ static long rc32434_wdt_ioctl(struct file *file, unsigned int cmd,
 			return -EINVAL;
 		}
 		break;
+	case WDIOC_KEEPALIVE:
+		rc32434_wdt_ping();
+		break;
 	case WDIOC_SETTIMEOUT:
 		if (copy_from_user(&new_timeout, argp, sizeof(int)))
 			return -EFAULT;
@@ -242,8 +244,8 @@ static struct miscdevice rc32434_wdt_miscdev = {
 	.fops	= &rc32434_wdt_fops,
 };
 
-static char banner[] __devinitdata = KERN_INFO KBUILD_MODNAME
-		": Watchdog Timer version " VERSION ", timer margin: %d sec\n";
+static char banner[] __devinitdata = KERN_INFO PFX
+		"Watchdog Timer version " VERSION ", timer margin: %d sec\n";
 
 static int __devinit rc32434_wdt_probe(struct platform_device *pdev)
 {
@@ -252,22 +254,19 @@ static int __devinit rc32434_wdt_probe(struct platform_device *pdev)
 
 	r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rb532_wdt_res");
 	if (!r) {
-		printk(KERN_ERR KBUILD_MODNAME
-			"failed to retrieve resources\n");
+		printk(KERN_ERR PFX "failed to retrieve resources\n");
 		return -ENODEV;
 	}
 
 	wdt_reg = ioremap_nocache(r->start, r->end - r->start);
 	if (!wdt_reg) {
-		printk(KERN_ERR KBUILD_MODNAME
-			"failed to remap I/O resources\n");
+		printk(KERN_ERR PFX "failed to remap I/O resources\n");
 		return -ENXIO;
 	}
 
 	ret = misc_register(&rc32434_wdt_miscdev);
 	if (ret < 0) {
-		printk(KERN_ERR KBUILD_MODNAME
-			"failed to register watchdog device\n");
+		printk(KERN_ERR PFX "failed to register watchdog device\n");
 		goto unmap;
 	}
 
@@ -287,7 +286,7 @@ static int __devexit rc32434_wdt_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static struct platform_driver rc32434_wdt = {
+static struct platform_driver rc32434_wdt_driver = {
 	.probe	= rc32434_wdt_probe,
 	.remove	= __devexit_p(rc32434_wdt_remove),
 	.driver	= {
@@ -297,12 +296,12 @@ static struct platform_driver rc32434_wdt = {
 
 static int __init rc32434_wdt_init(void)
 {
-	return platform_driver_register(&rc32434_wdt);
+	return platform_driver_register(&rc32434_wdt_driver);
 }
 
 static void __exit rc32434_wdt_exit(void)
 {
-	platform_driver_unregister(&rc32434_wdt);
+	platform_driver_unregister(&rc32434_wdt_driver);
 }
 
 module_init(rc32434_wdt_init);