diff options
| -rw-r--r-- | drivers/clk/msm/clock-debug.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/clk/msm/clock-debug.c b/drivers/clk/msm/clock-debug.c index 00a86ba55171..0fe93ede17cc 100644 --- a/drivers/clk/msm/clock-debug.c +++ b/drivers/clk/msm/clock-debug.c @@ -1,6 +1,7 @@ /* * Copyright (C) 2007 Google, Inc. - * Copyright (c) 2007-2014, 2016, The Linux Foundation. All rights reserved. + * Copyright (c) 2007-2014, 2016-2017, The Linux Foundation. All rights + * reserved. * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and @@ -77,6 +78,7 @@ static int clock_debug_measure_get(void *data, u64 *val) else is_hw_gated = 0; + mutex_lock(&clock->prepare_lock); ret = clk_set_parent(measure, clock); if (!ret) { /* @@ -107,6 +109,7 @@ static int clock_debug_measure_get(void *data, u64 *val) */ meas_rate = clk_get_rate(clock); sw_rate = clk_get_rate(measure->parent); + mutex_unlock(&clock->prepare_lock); if (sw_rate && meas_rate >= (sw_rate * 2)) *val *= DIV_ROUND_CLOSEST(meas_rate, sw_rate); |