On Tue, 2014-03-18 at 14:13 +0100, Geert Uytterhoeven wrote: > > no_printk keeps all side effects like > > performing any function calls made by the > > statement or accessing any volatiles. > That's true... > > Using > > do { if (0) no_printk(fmt, ##__VA_ARGS__); } while (0) > > does not have any side-effects. > ... but all current users in include/ have the side-effects. I believe that's intentional, but <shrug>. I prefer debug statements to have _no_ side effects when not compiled-in/enabled. Opinions vary. cheers, Joe -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html