Hello, I found that the commit, "fa0708b ARM: 8471/1: need to save/restore arm register(r11) when it is corrupted" is missed from 4.1-stable tree until 4.1.28. Without it, cpu_pm_enter() with specific test environment causes hang-up on arm. Any plan to apply the commit to 4.1-stable? Best Regards, - Seung-Woo Kim -- Seung-Woo Kim Samsung Software R&D Center -- -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html