wl12xx: allow runtime changing of debug_level
Currently, the debug level is set in compilation time (by the DEBUG_LEVEL const). This method has the advantage of compiling only the relevant messages, while optimizing out the unused ones. In order to allow runtime control over the debug_level, while optimizing out messages when debug messages are not needed, we combine some methods: 1. use dynamic_debug (pr_debug) rather then printk. 2. add debug_level module param in order to set debug level during insmod. 3. add debug_level sysfs file in order to allow dynamic control over the debug level. Since patches for pr_debug_hex_dump() implementation haven't been applied yet, we are still temporarly using print_hex_dump(). Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
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