dev_WARN_ONCE() is like WARN_ONCE(), but with a struct device *argument
to print device context.
Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
include/linux/printk.h | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/include/linux/printk.h b/include/linux/printk.h
index a9d1b05f6f..42c29e04dd 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -205,4 +205,17 @@ static inline void print_hex_dump_debug(const char *prefix_str, int prefix_type,
#define print_hex_dump_bytes(prefix_str, prefix_type, buf, len) \
print_hex_dump_debug(prefix_str, prefix_type, 16, 1, buf, len, true)
+#define dev_WARN_ONCE(dev, condition, format...) ({ \
+ static int __warned; \
+ int __ret_warn_once = !!(condition); \
+ \
+ if (unlikely(__ret_warn_once)) { \
+ if (!__warned) { \
+ __warned = 1; \
+ dev_warn(dev, format); \
+ } \
+ } \
+ unlikely(__ret_warn_once); \
+})
+
#endif
--
2.30.2
