Hi Richard, > Ok so -fno-optimize-sibling-calls is busted in older compiler. I am not sure that -fno-optimize-sibling-calls is busted as it appears that with this option it worked with the old compiler. However, I should note that I never confirmed if the issue was caused by having -fno-omit-frame-pointer versus -fomit-frame-pointer or the omission of the option -fno-optimize-sibling-calls. So basically, I am saying that having the following allows it to work. KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls Cheers Jon -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html