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| author | Changcheng Deng <deng.changcheng@zte.com.cn> | 2021-11-25 01:43:11 +0000 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2021-12-20 19:10:09 -0600 |
| commit | 92c550f9ffd2884bb5def52b5c0485a35e452784 (patch) | |
| tree | dd6479a2a852b3e59c5a55bdab56bbbdf0f905a6 /drivers/soc | |
| parent | 6fc61c39ee1adb5f4115d288c876772fcd8b6979 (diff) | |
| download | linux-92c550f9ffd2884bb5def52b5c0485a35e452784.tar.bz2 | |
PM: AVS: qcom-cpr: Use div64_ul instead of do_div
do_div() does a 64-by-32 division. Here the divisor is an unsigned long
which on some platforms is 64 bit wide. So use div64_ul instead of do_div
to avoid a possible truncation.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Changcheng Deng <deng.changcheng@zte.com.cn>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211125014311.45942-1-deng.changcheng@zte.com.cn
Diffstat (limited to 'drivers/soc')
| -rw-r--r-- | drivers/soc/qcom/cpr.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/soc/qcom/cpr.c b/drivers/soc/qcom/cpr.c index 1d818a8ba208..e9b854ed1bdf 100644 --- a/drivers/soc/qcom/cpr.c +++ b/drivers/soc/qcom/cpr.c @@ -1010,7 +1010,7 @@ static int cpr_interpolate(const struct corner *corner, int step_volt, return corner->uV; temp = f_diff * (uV_high - uV_low); - do_div(temp, f_high - f_low); + temp = div64_ul(temp, f_high - f_low); /* * max_volt_scale has units of uV/MHz while freq values |