dev_WARN_ONCE() is like WARN_ONCE(), but with a struct device *argument to print device context.
Signed-off-by: Sascha Hauer <[email protected]> --- 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
