# Re: \[PATCH v2 1/2\] cpupower: Fix amd cpu (family \< 0x17) active state issue

- From: Shuah Khan \<skhan@linuxfoundation.org\>
- Date: 2021-07-22 15:21:38 
- List: linux-pm
- Page: https://ratatoskr.run/linux-pm/2021/07/1454633
- Thread: https://ratatoskr.run/linux-pm/2021/07/1454633/t.md

```text
On 5/30/21 12:58 AM, 徐福海 wrote:
> From: xufuhai<redacted>
>
> For the old  AMD processor (family < 0x17), cpupower will call the
> amd_pci_get_num_boost_states function, but for the non-root user
> pci_read_byte function (implementation comes from the psutil library),
> val will be set to 0xff, indicating that there is no read function
> callback. At this time, the original logic will set the cpupower turbo
> active state to yes. This is an obvious issue~
>
> Reproduce procedure:
> 	cpupower frequency-info
>

Please resend this patch and the following from the same
address as the Signed-off-by.

https://patchwork.kernel.org/project/linux-pm/patch/2dccdf57-1546-e55e-2efe-3ac91ed7f043@gmail.com/

thanks,
-- Shuah
```