diff --git a/arch/arm/kernel/perf_event_msm_krait.c b/arch/arm/kernel/perf_event_msm_krait.c index 49aae5a66b65099da13094baab7b164b14d3e94f..34f9b4e5b099dd8f2bc1652bcdd7d4d1a2935613 100644 --- a/arch/arm/kernel/perf_event_msm_krait.c +++ b/arch/arm/kernel/perf_event_msm_krait.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2011-2014, The Linux Foundation. All rights reserved. + * Copyright (c) 2011-2014, 2016 The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -208,9 +208,6 @@ static unsigned int get_krait_evtinfo(unsigned int krait_evt_type, code = (krait_evt_type & 0x00FF0) >> 4; group = krait_evt_type & 0x0000F; - if ((group > 3) || (reg > KRAIT_MAX_L1_REG)) - return -EINVAL; - if (prefix != KRAIT_EVT_PREFIX && prefix != KRAIT_VENUMEVT_PREFIX) return -EINVAL; @@ -221,6 +218,9 @@ static unsigned int get_krait_evtinfo(unsigned int krait_evt_type, reg += VENUM_BASE_OFFSET; } + if ((group > 3) || (reg > KRAIT_MAX_L1_REG)) + return -EINVAL; + evtinfo->group_setval = 0x80000000 | (code << (group * 8)); evtinfo->groupcode = reg; evtinfo->armv7_evt_type = evt_type_base[reg] | group;