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MALI: midgard: Fix power coefficient overflow

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Change-Id: Ie0ceca32a33a5a8da56d3a32913e819a7e31e45b
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
This commit is contained in:
Finley Xiao 2019-07-11 19:08:57 +08:00
parent a6815de5f5
commit e2f291faa9
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/arm/midgard/ipa/mali_kbase_ipa_simple.c
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@ -99,6 +99,7 @@ static int model_static_coeff(struct kbase_ipa_model *model, u32 *coeffp)
struct kbase_ipa_model_simple_data *model_data =
(struct kbase_ipa_model_simple_data *) model->model_data;
struct thermal_zone_device *gpu_tz = model_data->gpu_tz;
u64 coeffp_big;
if (gpu_tz) {
int ret;
@ -115,9 +116,8 @@ static int model_static_coeff(struct kbase_ipa_model *model, u32 *coeffp)
temp_scaling_factor = calculate_temp_scaling_factor(model_data->ts,
temp);
*coeffp = model_data->static_coefficient * temp_scaling_factor;
*coeffp /= 1000000;
coeffp_big = (u64)model_data->static_coefficient * temp_scaling_factor;
*coeffp = div_u64(coeffp_big, 1000000);
return 0;
}