linux-kernel - RE: [PATCH v9 09/13] cpufreq: amd-pstate: add driver working mode switch support

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Message-ID: <DM4PR12MB52784DC840E4AB591E07BF8A9CFB9@DM4PR12MB5278.namprd12.prod.outlook.com>
Date:   Fri, 6 Jan 2023 02:52:48 +0000
From:   "Yuan, Perry" <Perry.Yuan@....com>
To:     "Karny, Wyes" <Wyes.Karny@....com>,
        "rafael.j.wysocki@...el.com" <rafael.j.wysocki@...el.com>,
        "Limonciello, Mario" <Mario.Limonciello@....com>,
        "Huang, Ray" <Ray.Huang@....com>,
        "viresh.kumar@...aro.org" <viresh.kumar@...aro.org>
CC:     "Sharma, Deepak" <Deepak.Sharma@....com>,
        "Fontenot, Nathan" <Nathan.Fontenot@....com>,
        "Deucher, Alexander" <Alexander.Deucher@....com>,
        "Huang, Shimmer" <Shimmer.Huang@....com>,
        "Du, Xiaojian" <Xiaojian.Du@....com>,
        "Meng, Li (Jassmine)" <Li.Meng@....com>,
        "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v9 09/13] cpufreq: amd-pstate: add driver working mode
 switch support

[AMD Official Use Only - General]

Hi Wyes.

> -----Original Message-----
> From: Karny, Wyes <Wyes.Karny@....com>
> Sent: Friday, January 6, 2023 12:04 AM
> To: Yuan, Perry <Perry.Yuan@....com>; rafael.j.wysocki@...el.com;
> Limonciello, Mario <Mario.Limonciello@....com>; Huang, Ray
> <Ray.Huang@....com>; viresh.kumar@...aro.org
> Cc: Sharma, Deepak <Deepak.Sharma@....com>; Fontenot, Nathan
> <Nathan.Fontenot@....com>; Deucher, Alexander
> <Alexander.Deucher@....com>; Huang, Shimmer
> <Shimmer.Huang@....com>; Du, Xiaojian <Xiaojian.Du@....com>; Meng,
> Li (Jassmine) <Li.Meng@....com>; linux-pm@...r.kernel.org; linux-
> kernel@...r.kernel.org
> Subject: Re: [PATCH v9 09/13] cpufreq: amd-pstate: add driver working mode
> switch support
> 
> Hi Perry,
> 
> On 12/25/2022 10:04 PM, Perry Yuan wrote:
> -------------------------------->8--------------------------------
> > +
> > +static int amd_pstate_update_status(const char *buf, size_t size) {
> > +	int ret;
> > +	int mode_idx;
> > +
> > +	if (size > 7 || size < 3)
> > +		return -EINVAL;
> > +	mode_idx = get_mode_idx_from_str(buf, size);
> 
> if (size > 7 || size < 6) right?
> because possible strings are: "disable", "passive" and "active".
> 

Since I remove the "off" string for the v10 series, So Yes, It will be good to update the size checking.

Perry. 

> --
> Thanks & Regards,
> Wyes