target/linux/omap24xx/patches-2.6.38/534-cbus-retu-wdt-remove-unused-interfaces.patch

   1 Index: linux-2.6.38-rc6/drivers/cbus/retu-wdt.c
   2 ===================================================================
   3 --- linux-2.6.38-rc6.orig/drivers/cbus/retu-wdt.c       2011-03-04 15:45:37.533948567 +0100
   4 +++ linux-2.6.38-rc6/drivers/cbus/retu-wdt.c    2011-03-04 15:46:21.312816961 +0100
   5 @@ -52,7 +52,6 @@ static DEFINE_MUTEX(retu_wdt_mutex);
   6
   7  /* Current period of watchdog */
   8  static unsigned int period_val = RETU_WDT_DEFAULT_TIMER;
   9 -static int counter_param = RETU_WDT_MAX_TIMER;
  10
  11  struct retu_wdt_dev {
  12         struct device           *dev;
  13 @@ -109,56 +108,6 @@ static void retu_wdt_ping_work(struct wo
  14         retu_wdt_ping_enable(wdev);
  15  }
  16
  17 -static ssize_t retu_wdt_period_show(struct device *dev,
  18 -                               struct device_attribute *attr, char *buf)
  19 -{
  20 -       /* Show current max counter */
  21 -       return sprintf(buf, "%u\n", (u16)period_val);
  22 -}
  23 -
  24 -/*
  25 - * Note: This inteface is non-standard and likely to disappear!
  26 - * Use /dev/watchdog instead, that's the standard.
  27 - */
  28 -static ssize_t retu_wdt_period_store(struct device *dev,
  29 -                               struct device_attribute *attr,
  30 -                               const char *buf, size_t count)
  31 -{
  32 -       unsigned int new_period;
  33 -       int ret;
  34 -
  35 -#ifdef CONFIG_WATCHDOG_NOWAYOUT
  36 -       retu_wdt_ping_disable(retu_wdt);
  37 -#endif
  38 -
  39 -       if (sscanf(buf, "%u", &new_period) != 1) {
  40 -               printk(KERN_ALERT "retu_wdt_period_store: Invalid input\n");
  41 -               return -EINVAL;
  42 -       }
  43 -
  44 -       ret = retu_modify_counter(new_period);
  45 -       if (ret < 0)
  46 -               return ret;
  47 -
  48 -       return strnlen(buf, count);
  49 -}
  50 -
  51 -static ssize_t retu_wdt_counter_show(struct device *dev,
  52 -                               struct device_attribute *attr, char *buf)
  53 -{
  54 -       u16 counter;
  55 -
  56 -       /* Show current value in watchdog counter */
  57 -       counter = retu_read_reg(dev, RETU_REG_WATCHDOG);
  58 -
  59 -       /* Only the 5 LSB are important */
  60 -       return snprintf(buf, PAGE_SIZE, "%u\n", (counter & 0x3F));
  61 -}
  62 -
  63 -static DEVICE_ATTR(period, S_IRUGO | S_IWUSR, retu_wdt_period_show, \
  64 -                       retu_wdt_period_store);
  65 -static DEVICE_ATTR(counter, S_IRUGO, retu_wdt_counter_show, NULL);
  66 -
  67  static int retu_wdt_open(struct inode *inode, struct file *file)
  68  {
  69         if (test_and_set_bit(0, &retu_wdt->users))
  70 @@ -232,18 +181,6 @@ static long retu_wdt_ioctl(struct file *
  71         return 0;
  72  }
  73
  74 -/* Start kicking retu watchdog until user space starts doing the kicking */
  75 -static int __devinit retu_wdt_ping(void)
  76 -{
  77 -#ifdef CONFIG_WATCHDOG_NOWAYOUT
  78 -       retu_modify_counter(RETU_WDT_MAX_TIMER);
  79 -#else
  80 -       retu_wdt_ping_enable(retu_wdt);
  81 -#endif
  82 -
  83 -       return 0;
  84 -}
  85 -
  86  static const struct file_operations retu_wdt_fops = {
  87         .owner          = THIS_MODULE,
  88         .write          = retu_wdt_write,
  89 @@ -252,8 +189,6 @@ static const struct file_operations retu
  90         .release        = retu_wdt_release,
  91  };
  92
  93 -/*----------------------------------------------------------------------------*/
  94 -
  95  static int __init retu_wdt_probe(struct platform_device *pdev)
  96  {
  97         struct retu_wdt_dev *wdev;
  98 @@ -265,18 +200,6 @@ static int __init retu_wdt_probe(struct
  99
 100         wdev->dev = &pdev->dev;
 101
 102 -       ret = device_create_file(&pdev->dev, &dev_attr_period);
 103 -       if (ret) {
 104 -               dev_err(&pdev->dev, "Error creating sysfs period\n");
 105 -               goto free1;
 106 -       }
 107 -
 108 -       ret = device_create_file(&pdev->dev, &dev_attr_counter);
 109 -       if (ret) {
 110 -               dev_err(&pdev->dev, "Error creating sysfs counter\n");
 111 -               goto free2;
 112 -       }
 113 -
 114         platform_set_drvdata(pdev, wdev);
 115         retu_wdt = wdev;
 116         wdev->retu_wdt_miscdev.parent = &pdev->dev;
 117 @@ -286,38 +209,21 @@ static int __init retu_wdt_probe(struct
 118
 119         ret = misc_register(&(wdev->retu_wdt_miscdev));
 120         if (ret)
 121 -               goto free3;
 122 +               goto err_free_wdev;
 123
 124         INIT_DELAYED_WORK(&wdev->ping_work, retu_wdt_ping_work);
 125
 126 -       /* passed as module parameter? */
 127 -       ret = retu_modify_counter(counter_param);
 128 -       if (ret == -EINVAL) {
 129 -               ret = retu_modify_counter(RETU_WDT_DEFAULT_TIMER);
 130 -               dev_dbg(&pdev->dev, "Initializing to default value\n");
 131 -       }
 132 -
 133 -       /* Kick the watchdog for kernel booting to finish */
 134 +       /* Kick the watchdog for kernel booting to finish.
 135 +        * If nowayout is not set, we start the ping work. */
 136 +#ifdef CONFIG_WATCHDOG_NOWAYOUT
 137         retu_modify_counter(RETU_WDT_MAX_TIMER);
 138 -
 139 -       ret = retu_wdt_ping();
 140 -       if (ret < 0) {
 141 -               dev_err(&pdev->dev, "Failed to ping\n");
 142 -               goto free4;
 143 -       }
 144 +#else
 145 +       retu_wdt_ping_enable(retu_wdt);
 146 +#endif
 147
 148         return 0;
 149
 150 -free4:
 151 -       misc_deregister(&wdev->retu_wdt_miscdev);
 152 -
 153 -free3:
 154 -       device_remove_file(&pdev->dev, &dev_attr_counter);
 155 -
 156 -free2:
 157 -       device_remove_file(&pdev->dev, &dev_attr_period);
 158 -
 159 -free1:
 160 +err_free_wdev:
 161         kfree(wdev);
 162
 163         return ret;
 164 @@ -329,8 +235,6 @@ static int __devexit retu_wdt_remove(str
 165
 166         wdev = platform_get_drvdata(pdev);
 167         misc_deregister(&wdev->retu_wdt_miscdev);
 168 -       device_remove_file(&pdev->dev, &dev_attr_period);
 169 -       device_remove_file(&pdev->dev, &dev_attr_counter);
 170         cancel_delayed_work_sync(&wdev->ping_work);
 171         kfree(wdev);
 172
 173 @@ -356,9 +260,7 @@ static void __exit retu_wdt_exit(void)
 174
 175  module_init(retu_wdt_init);
 176  module_exit(retu_wdt_exit);
 177 -module_param(counter_param, int, 0);
 178
 179  MODULE_DESCRIPTION("Retu WatchDog");
 180  MODULE_AUTHOR("Amit Kucheria");
 181  MODULE_LICENSE("GPL");
 182 -