linux-kernel - Re: [PATCH v2 6/9] wifi: iwlwifi: mvm: Set THERMAL_TRIP_FLAG_RW

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Date: Thu, 15 Feb 2024 19:04:15 +0100
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Linux PM <linux-pm@...r.kernel.org>, 
	Miri Korenblit <miriam.rachel.korenblit@...el.com>
Cc: Lukasz Luba <lukasz.luba@....com>, LKML <linux-kernel@...r.kernel.org>, 
	Daniel Lezcano <daniel.lezcano@...aro.org>, 
	Stanislaw Gruszka <stanislaw.gruszka@...ux.intel.com>, 
	Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>, Zhang Rui <rui.zhang@...el.com>, 
	netdev@...r.kernel.org, "Rafael J. Wysocki" <rjw@...ysocki.net>, 
	Ido Schimmel <idosch@...dia.com>, Petr Machata <petrm@...dia.com>, linux-wireless@...r.kernel.org, 
	Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>, 
	Pengutronix Kernel Team <kernel@...gutronix.de>, 
	Manaf Meethalavalappu Pallikunhi <quic_manafm@...cinc.com>, Kalle Valo <kvalo@...nel.org>, 
	Johannes Berg <johannes@...solutions.net>
Subject: Re: [PATCH v2 6/9] wifi: iwlwifi: mvm: Set THERMAL_TRIP_FLAG_RW_TEMP directly

On Mon, Feb 12, 2024 at 7:42 PM Rafael J. Wysocki <rjw@...ysocki.net> wrote:
>
> From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
>
> It is now possible to flag trip points with THERMAL_TRIP_FLAG_RW_TEMP
> to allow their temperature to be set from user space via sysfs instead
> of using a nonzero writable trips mask during thermal zone registration,
> so make the iwlwifi code do that.
>
> No intentional functional impact.
>
> Note that this change is requisite for dropping the mask argument from
> thermal_zone_device_register_with_trips() going forward.
>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> ---
>
> v1 -> v2:
>    * Rename trip flag (Stanislaw).
>    * Fix coding mistake in iwl_mvm_thermal_zone_register().
>    * Add "wifi:" prefix to the subject (Kalle).

I think that all of the feedback on the v1 of this patch has been
addressed, so are there any more concerns regarding it?

If not, it would be nice to get an ACK for it, so it can be routed
through the PM tree.

> ---
>  drivers/net/wireless/intel/iwlwifi/mvm/tt.c |    6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
>
> Index: linux-pm/drivers/net/wireless/intel/iwlwifi/mvm/tt.c
> ===================================================================
> --- linux-pm.orig/drivers/net/wireless/intel/iwlwifi/mvm/tt.c
> +++ linux-pm/drivers/net/wireless/intel/iwlwifi/mvm/tt.c
> @@ -667,9 +667,6 @@ static  struct thermal_zone_device_ops t
>         .set_trip_temp = iwl_mvm_tzone_set_trip_temp,
>  };
>
> -/* make all trips writable */
> -#define IWL_WRITABLE_TRIPS_MSK (BIT(IWL_MAX_DTS_TRIPS) - 1)
> -
>  static void iwl_mvm_thermal_zone_register(struct iwl_mvm *mvm)
>  {
>         int i, ret;
> @@ -692,11 +689,12 @@ static void iwl_mvm_thermal_zone_registe
>         for (i = 0 ; i < IWL_MAX_DTS_TRIPS; i++) {
>                 mvm->tz_device.trips[i].temperature = THERMAL_TEMP_INVALID;
>                 mvm->tz_device.trips[i].type = THERMAL_TRIP_PASSIVE;
> +               mvm->tz_device.trips[i].flags = THERMAL_TRIP_FLAG_RW_TEMP;
>         }
>         mvm->tz_device.tzone = thermal_zone_device_register_with_trips(name,
>                                                         mvm->tz_device.trips,
>                                                         IWL_MAX_DTS_TRIPS,
> -                                                       IWL_WRITABLE_TRIPS_MSK,
> +                                                       0,
>                                                         mvm, &tzone_ops,
>                                                         NULL, 0, 0);
>         if (IS_ERR(mvm->tz_device.tzone)) {
>
>
>
>