diff options
Diffstat (limited to 'drivers/watchdog/watchdog_core.c')
| -rw-r--r-- | drivers/watchdog/watchdog_core.c | 49 |
1 files changed, 29 insertions, 20 deletions
diff --git a/drivers/watchdog/watchdog_core.c b/drivers/watchdog/watchdog_core.c index 5b55ccae06d4..6152dba4b52c 100644 --- a/drivers/watchdog/watchdog_core.c +++ b/drivers/watchdog/watchdog_core.c @@ -33,7 +33,8 @@ #include <linux/init.h> /* For __init/__exit/... */ #include <linux/idr.h> /* For ida_* macros */ #include <linux/err.h> /* For IS_ERR macros */ -#include <linux/of.h> /* For of_get_timeout_sec */ +#include <linux/of.h> /* For of_alias_get_id */ +#include <linux/property.h> /* For device_property_read_u32 */ #include <linux/suspend.h> #include "watchdog_core.h" /* For watchdog_dev_register/... */ @@ -137,8 +138,7 @@ int watchdog_init_timeout(struct watchdog_device *wdd, } /* try to get the timeout_sec property */ - if (dev && dev->of_node && - of_property_read_u32(dev->of_node, "timeout-sec", &t) == 0) { + if (dev && device_property_read_u32(dev, "timeout-sec", &t) == 0) { if (t && !watchdog_timeout_invalid(wdd, t)) { wdd->timeout = t; return 0; @@ -237,7 +237,7 @@ void watchdog_set_restart_priority(struct watchdog_device *wdd, int priority) } EXPORT_SYMBOL_GPL(watchdog_set_restart_priority); -static int __watchdog_register_device(struct watchdog_device *wdd) +static int ___watchdog_register_device(struct watchdog_device *wdd) { int ret, id = -1; @@ -260,12 +260,12 @@ static int __watchdog_register_device(struct watchdog_device *wdd) if (wdd->parent) { ret = of_alias_get_id(wdd->parent->of_node, "watchdog"); if (ret >= 0) - id = ida_simple_get(&watchdog_ida, ret, - ret + 1, GFP_KERNEL); + id = ida_alloc_range(&watchdog_ida, ret, ret, + GFP_KERNEL); } if (id < 0) - id = ida_simple_get(&watchdog_ida, 0, MAX_DOGS, GFP_KERNEL); + id = ida_alloc_max(&watchdog_ida, MAX_DOGS - 1, GFP_KERNEL); if (id < 0) return id; @@ -273,19 +273,20 @@ static int __watchdog_register_device(struct watchdog_device *wdd) ret = watchdog_dev_register(wdd); if (ret) { - ida_simple_remove(&watchdog_ida, id); + ida_free(&watchdog_ida, id); if (!(id == 0 && ret == -EBUSY)) return ret; /* Retry in case a legacy watchdog module exists */ - id = ida_simple_get(&watchdog_ida, 1, MAX_DOGS, GFP_KERNEL); + id = ida_alloc_range(&watchdog_ida, 1, MAX_DOGS - 1, + GFP_KERNEL); if (id < 0) return id; wdd->id = id; ret = watchdog_dev_register(wdd); if (ret) { - ida_simple_remove(&watchdog_ida, id); + ida_free(&watchdog_ida, id); return ret; } } @@ -309,7 +310,7 @@ static int __watchdog_register_device(struct watchdog_device *wdd) pr_err("watchdog%d: Cannot register reboot notifier (%d)\n", wdd->id, ret); watchdog_dev_unregister(wdd); - ida_simple_remove(&watchdog_ida, id); + ida_free(&watchdog_ida, id); return ret; } } @@ -336,6 +337,22 @@ static int __watchdog_register_device(struct watchdog_device *wdd) return 0; } +static int __watchdog_register_device(struct watchdog_device *wdd) +{ + const char *dev_str; + int ret; + + ret = ___watchdog_register_device(wdd); + if (ret) { + dev_str = wdd->parent ? dev_name(wdd->parent) : + (const char *)wdd->info->identity; + pr_err("%s: failed to register watchdog device (err = %d)\n", + dev_str, ret); + } + + return ret; +} + /** * watchdog_register_device() - register a watchdog device * @wdd: watchdog device @@ -349,7 +366,6 @@ static int __watchdog_register_device(struct watchdog_device *wdd) int watchdog_register_device(struct watchdog_device *wdd) { - const char *dev_str; int ret = 0; mutex_lock(&wtd_deferred_reg_mutex); @@ -359,13 +375,6 @@ int watchdog_register_device(struct watchdog_device *wdd) watchdog_deferred_registration_add(wdd); mutex_unlock(&wtd_deferred_reg_mutex); - if (ret) { - dev_str = wdd->parent ? dev_name(wdd->parent) : - (const char *)wdd->info->identity; - pr_err("%s: failed to register watchdog device (err = %d)\n", - dev_str, ret); - } - return ret; } EXPORT_SYMBOL_GPL(watchdog_register_device); @@ -382,7 +391,7 @@ static void __watchdog_unregister_device(struct watchdog_device *wdd) unregister_reboot_notifier(&wdd->reboot_nb); watchdog_dev_unregister(wdd); - ida_simple_remove(&watchdog_ida, wdd->id); + ida_free(&watchdog_ida, wdd->id); } /** |