On 2021/4/7 16:32, Jarkko Nikula wrote:
> Hi
>
> On 3/31/21 4:36 PM, Yicong Yang wrote:
>> + ret = device_property_read_u64(dev, "clk_rate", &ctlr->clk_rate_khz);
>> + if (ret) {
>> + dev_err(dev, "failed to get clock frequency, ret = %d\n", ret);
>> + return ret;
>> + }
>> +
>> + ctlr->clk_rate_khz = DIV_ROUND_UP_ULL(ctlr->clk_rate_khz, HZ_PER_KHZ);
>> +
>
> I'd use a temp variable here for reading the "clk_rate" property in Hertz and calculating the derived kHz value from it. As a bonus allow to use u32 for clk_rate_khz instead of u64. u32 will still provide plenty of headroom :-)
>
> Reason for temp variable is for me it's confusing to see statement like "rate_khz = rate_khz / 1000".
>
I can get this addressed in the updated version. Thanks for the suggestion!
