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n810: More retu-wdt cleanups
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@25863 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
mb
@@ -0,0 +1,182 @@
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Index: linux-2.6.38-rc6/drivers/cbus/retu-wdt.c
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===================================================================
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--- linux-2.6.38-rc6.orig/drivers/cbus/retu-wdt.c 2011-03-04 15:45:37.533948567 +0100
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+++ linux-2.6.38-rc6/drivers/cbus/retu-wdt.c 2011-03-04 15:46:21.312816961 +0100
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@@ -52,7 +52,6 @@ static DEFINE_MUTEX(retu_wdt_mutex);
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/* Current period of watchdog */
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static unsigned int period_val = RETU_WDT_DEFAULT_TIMER;
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-static int counter_param = RETU_WDT_MAX_TIMER;
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struct retu_wdt_dev {
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struct device *dev;
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@@ -109,56 +108,6 @@ static void retu_wdt_ping_work(struct wo
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retu_wdt_ping_enable(wdev);
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}
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-static ssize_t retu_wdt_period_show(struct device *dev,
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- struct device_attribute *attr, char *buf)
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-{
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- /* Show current max counter */
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- return sprintf(buf, "%u\n", (u16)period_val);
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-}
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-
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-/*
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- * Note: This inteface is non-standard and likely to disappear!
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- * Use /dev/watchdog instead, that's the standard.
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- */
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-static ssize_t retu_wdt_period_store(struct device *dev,
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- struct device_attribute *attr,
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- const char *buf, size_t count)
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-{
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- unsigned int new_period;
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- int ret;
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-
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-#ifdef CONFIG_WATCHDOG_NOWAYOUT
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- retu_wdt_ping_disable(retu_wdt);
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-#endif
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-
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- if (sscanf(buf, "%u", &new_period) != 1) {
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- printk(KERN_ALERT "retu_wdt_period_store: Invalid input\n");
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- return -EINVAL;
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- }
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-
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- ret = retu_modify_counter(new_period);
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- if (ret < 0)
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- return ret;
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-
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- return strnlen(buf, count);
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-}
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-
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-static ssize_t retu_wdt_counter_show(struct device *dev,
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- struct device_attribute *attr, char *buf)
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-{
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- u16 counter;
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-
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- /* Show current value in watchdog counter */
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- counter = retu_read_reg(dev, RETU_REG_WATCHDOG);
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-
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- /* Only the 5 LSB are important */
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- return snprintf(buf, PAGE_SIZE, "%u\n", (counter & 0x3F));
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-}
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-
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-static DEVICE_ATTR(period, S_IRUGO | S_IWUSR, retu_wdt_period_show, \
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- retu_wdt_period_store);
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-static DEVICE_ATTR(counter, S_IRUGO, retu_wdt_counter_show, NULL);
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-
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static int retu_wdt_open(struct inode *inode, struct file *file)
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{
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if (test_and_set_bit(0, &retu_wdt->users))
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@@ -232,18 +181,6 @@ static long retu_wdt_ioctl(struct file *
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return 0;
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}
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-/* Start kicking retu watchdog until user space starts doing the kicking */
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-static int __devinit retu_wdt_ping(void)
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-{
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-#ifdef CONFIG_WATCHDOG_NOWAYOUT
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- retu_modify_counter(RETU_WDT_MAX_TIMER);
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-#else
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- retu_wdt_ping_enable(retu_wdt);
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-#endif
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-
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- return 0;
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-}
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-
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static const struct file_operations retu_wdt_fops = {
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.owner = THIS_MODULE,
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.write = retu_wdt_write,
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@@ -252,8 +189,6 @@ static const struct file_operations retu
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.release = retu_wdt_release,
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};
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-/*----------------------------------------------------------------------------*/
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-
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static int __init retu_wdt_probe(struct platform_device *pdev)
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{
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struct retu_wdt_dev *wdev;
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@@ -265,18 +200,6 @@ static int __init retu_wdt_probe(struct
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wdev->dev = &pdev->dev;
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- ret = device_create_file(&pdev->dev, &dev_attr_period);
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- if (ret) {
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- dev_err(&pdev->dev, "Error creating sysfs period\n");
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- goto free1;
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- }
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-
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- ret = device_create_file(&pdev->dev, &dev_attr_counter);
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- if (ret) {
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- dev_err(&pdev->dev, "Error creating sysfs counter\n");
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- goto free2;
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- }
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-
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platform_set_drvdata(pdev, wdev);
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retu_wdt = wdev;
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wdev->retu_wdt_miscdev.parent = &pdev->dev;
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@@ -286,38 +209,21 @@ static int __init retu_wdt_probe(struct
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ret = misc_register(&(wdev->retu_wdt_miscdev));
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if (ret)
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- goto free3;
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+ goto err_free_wdev;
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INIT_DELAYED_WORK(&wdev->ping_work, retu_wdt_ping_work);
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- /* passed as module parameter? */
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- ret = retu_modify_counter(counter_param);
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- if (ret == -EINVAL) {
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- ret = retu_modify_counter(RETU_WDT_DEFAULT_TIMER);
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- dev_dbg(&pdev->dev, "Initializing to default value\n");
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- }
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-
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- /* Kick the watchdog for kernel booting to finish */
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+ /* Kick the watchdog for kernel booting to finish.
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+ * If nowayout is not set, we start the ping work. */
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+#ifdef CONFIG_WATCHDOG_NOWAYOUT
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retu_modify_counter(RETU_WDT_MAX_TIMER);
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-
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- ret = retu_wdt_ping();
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- if (ret < 0) {
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- dev_err(&pdev->dev, "Failed to ping\n");
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- goto free4;
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- }
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+#else
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+ retu_wdt_ping_enable(retu_wdt);
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+#endif
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return 0;
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-free4:
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- misc_deregister(&wdev->retu_wdt_miscdev);
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-
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-free3:
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- device_remove_file(&pdev->dev, &dev_attr_counter);
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-
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-free2:
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- device_remove_file(&pdev->dev, &dev_attr_period);
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-
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-free1:
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+err_free_wdev:
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kfree(wdev);
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return ret;
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@@ -329,8 +235,6 @@ static int __devexit retu_wdt_remove(str
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wdev = platform_get_drvdata(pdev);
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misc_deregister(&wdev->retu_wdt_miscdev);
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- device_remove_file(&pdev->dev, &dev_attr_period);
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- device_remove_file(&pdev->dev, &dev_attr_counter);
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cancel_delayed_work_sync(&wdev->ping_work);
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kfree(wdev);
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@@ -356,9 +260,7 @@ static void __exit retu_wdt_exit(void)
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module_init(retu_wdt_init);
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module_exit(retu_wdt_exit);
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-module_param(counter_param, int, 0);
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MODULE_DESCRIPTION("Retu WatchDog");
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MODULE_AUTHOR("Amit Kucheria");
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MODULE_LICENSE("GPL");
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-
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