linux-kernel - Re: [PATCH v3 02/11] power: charger-manager: don't write through desc->properties

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Date:   Fri, 1 May 2020 15:48:08 +0200
From:   Sebastian Reichel <sebastian.reichel@...labora.com>
To:     Michał Mirosław <mirq-linux@...e.qmqm.pl>
Cc:     Andrey Smirnov <andrew.smirnov@...il.com>,
        Guenter Roeck <linux@...ck-us.net>,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH v3 02/11] power: charger-manager: don't write through
 desc->properties

Hi,

On Fri, May 01, 2020 at 03:30:08PM +0200, Michał Mirosław wrote:
> On Fri, May 01, 2020 at 02:38:49PM +0200, Sebastian Reichel wrote:
> > Hi,
> > 
> > On Fri, Apr 03, 2020 at 10:20:31PM +0200, Michał Mirosław wrote:
> > > psy_desc->properties will become pointer to const.  Avoid writing
> > > through the pointer to enable constification of the tables elsewhere.
> > > 
> > > Signed-off-by: Michał Mirosław <mirq-linux@...e.qmqm.pl>
> > For patches 1-3 I used my version, that I wrote in parallel while
> > reviewing a different patch series. It is slightly different, but
> > achieves the same goal.
> 
> There is a bug in the tree now regarding use of num_properties
> in charger-manager.  Following patch should fix it.

Thanks, I folded this into the charger-manager patch.

-- Sebastian

> Best Regards,
> Michał Mirosław
> 
> diff --git a/drivers/power/supply/charger-manager.c b/drivers/power/supply/charger-manager.c
> index a71e2ee81423..2ef53dc1f2fb 100644
> --- a/drivers/power/supply/charger-manager.c
> +++ b/drivers/power/supply/charger-manager.c
> @@ -1740,14 +1740,14 @@ static int charger_manager_probe(struct platform_device *pdev)
>  	}
>  	if (!power_supply_get_property(fuel_gauge,
>  					  POWER_SUPPLY_PROP_CHARGE_NOW, &val)) {
> -		properties[cm->charger_psy_desc.num_properties] =
> +		properties[num_properties] =
>  				POWER_SUPPLY_PROP_CHARGE_NOW;
>  		num_properties++;
>  	}
>  	if (!power_supply_get_property(fuel_gauge,
>  					  POWER_SUPPLY_PROP_CURRENT_NOW,
>  					  &val)) {
> -		properties[cm->charger_psy_desc.num_properties] =
> +		properties[num_properties] =
>  				POWER_SUPPLY_PROP_CURRENT_NOW;
>  		num_properties++;
>  	}

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