On Sun, 2015-11-15 at 15:31 +0800, Dave Young wrote:
> cfg80211 module prints a lot of messages like below. Actually printing
> once is acceptable but sometimes it will print again and again, it looks
> very annoying. It is better to change these detail messages to debugging
> only.

So maybe add some wrapper that does a pr_info then
a pr_debug for the second and subsequent uses like:

#define pr_info_once_then_debug(fmt, ...)                       \
({                                                              \
        static bool __print_once __read_mostly;                 \
                                                                \
        if (!__print_once) {                                    \
                __print_once = true;                            \
                pr_info(fmt, ##__VA_ARGS__);                    \
        } else {                                                \
                pr_debug(fmt, ##__VA_ARGS__);                   \
        }                                                       \
})

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