[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>
diff --git a/drivers/watchdog/rc32434_wdt.c b/drivers/watchdog/rc32434_wdt.c
index f3553fa..68fb226 100644
--- a/drivers/watchdog/rc32434_wdt.c
+++ b/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 <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/bootinfo.h>
-#include <asm/time.h>
-#include <asm/mach-rc32434/integ.h>
+#include <asm/mach-rc32434/integ.h> /* For the Watchdog registers */
+
+#define PFX KBUILD_MODNAME ": "
#define VERSION "0.4"
@@ -90,12 +90,16 @@
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 @@
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 @@
{
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 @@
.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 @@
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 @@
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 @@
.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 @@
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 @@
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 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);