device: Add dev_<level>_once variants

[android-x86/kernel.git] / include / linux / device.h

diff --git a/include/linux/device.h b/include/linux/device.h
index ce1f216..99fb07c 100644 (file)
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -1118,6 +1118,41 @@ do {                                                  \
 })
 #endif
 
+#ifdef CONFIG_PRINTK
+#define dev_level_once(dev_level, dev, fmt, ...)                       \
+do {                                                                   \
+       static bool __print_once __read_mostly;                         \
+                                                                       \
+       if (!__print_once) {                                            \
+               __print_once = true;                                    \
+               dev_level(dev, fmt, ##__VA_ARGS__);                     \
+       }                                                               \
+} while (0)
+#else
+#define dev_level_once(dev_level, dev, fmt, ...)                       \
+do {                                                                   \
+       if (0)                                                          \
+               dev_level(dev, fmt, ##__VA_ARGS__);                     \
+} while (0)
+#endif
+
+#define dev_emerg_once(dev, fmt, ...)                                  \
+       dev_level_once(dev_emerg, dev, fmt, ##__VA_ARGS__)
+#define dev_alert_once(dev, fmt, ...)                                  \
+       dev_level_once(dev_alert, dev, fmt, ##__VA_ARGS__)
+#define dev_crit_once(dev, fmt, ...)                                   \
+       dev_level_once(dev_crit, dev, fmt, ##__VA_ARGS__)
+#define dev_err_once(dev, fmt, ...)                                    \
+       dev_level_once(dev_err, dev, fmt, ##__VA_ARGS__)
+#define dev_warn_once(dev, fmt, ...)                                   \
+       dev_level_once(dev_warn, dev, fmt, ##__VA_ARGS__)
+#define dev_notice_once(dev, fmt, ...)                                 \
+       dev_level_once(dev_notice, dev, fmt, ##__VA_ARGS__)
+#define dev_info_once(dev, fmt, ...)                                   \
+       dev_level_once(dev_info, dev, fmt, ##__VA_ARGS__)
+#define dev_dbg_once(dev, fmt, ...)                                    \
+       dev_level_once(dev_info, dev, fmt, ##__VA_ARGS__)
+
 #define dev_level_ratelimited(dev_level, dev, fmt, ...)                        \
 do {                                                                   \
        static DEFINE_RATELIMIT_STATE(_rs,                              \