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authorWim Van Sebroeck <wim@iguana.be>2011-11-29 19:24:16 +0400
committerWim Van Sebroeck <wim@iguana.be>2012-01-06 18:22:04 +0400
commitff0b3cd4a416bc727b0797b95b229b278d2a28f2 (patch)
treecd6bdc2304ee8fd751f3bd79607c7bcaf337e198 /include/linux/watchdog.h
parentb8ec61189f3b4cd9d1b2856342f5d7676151d01c (diff)
downloadlinux-ff0b3cd4a416bc727b0797b95b229b278d2a28f2.tar.xz
watchdog: add nowayout helpers to Watchdog Timer Driver Kernel API
Add two nowayout helpers for the Watchdog Timer Driver Kernel API. And apply this to the already converted drivers. Note: s3c2410_wdt lost the nowayout feature during the conversion. Reviewed-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'include/linux/watchdog.h')
-rw-r--r--include/linux/watchdog.h21
1 files changed, 16 insertions, 5 deletions
diff --git a/include/linux/watchdog.h b/include/linux/watchdog.h
index 111843f88b2a..43ba5b3ce2a3 100644
--- a/include/linux/watchdog.h
+++ b/include/linux/watchdog.h
@@ -53,11 +53,7 @@ struct watchdog_info {
#ifdef __KERNEL__
-#ifdef CONFIG_WATCHDOG_NOWAYOUT
-#define WATCHDOG_NOWAYOUT 1
-#else
-#define WATCHDOG_NOWAYOUT 0
-#endif
+#include <linux/bitops.h>
struct watchdog_ops;
struct watchdog_device;
@@ -122,6 +118,21 @@ struct watchdog_device {
#define WDOG_NO_WAY_OUT 3 /* Is 'nowayout' feature set ? */
};
+#ifdef CONFIG_WATCHDOG_NOWAYOUT
+#define WATCHDOG_NOWAYOUT 1
+#define WATCHDOG_NOWAYOUT_INIT_STATUS (1 << WDOG_NO_WAY_OUT)
+#else
+#define WATCHDOG_NOWAYOUT 0
+#define WATCHDOG_NOWAYOUT_INIT_STATUS 0
+#endif
+
+/* Use the following function to set the nowayout feature */
+static inline void watchdog_set_nowayout(struct watchdog_device *wdd, int nowayout)
+{
+ if (nowayout)
+ set_bit(WDOG_NO_WAY_OUT, &wdd->status);
+}
+
/* Use the following functions to manipulate watchdog driver specific data */
static inline void watchdog_set_drvdata(struct watchdog_device *wdd, void *data)
{