linux-kernel - Re: [PATCH] power: supply: bq27xxx_battery: Notify also about status changes

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Message-ID: <20190426093243.zazld4wwv4qybwaf@pali>
Date:   Fri, 26 Apr 2019 11:32:43 +0200
From:   Pali Rohár <pali.rohar@...il.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     "Andrew F. Davis" <afd@...com>, Sebastian Reichel <sre@...nel.org>,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] power: supply: bq27xxx_battery: Notify also about status
 changes

On Friday 26 April 2019 11:26:48 Krzysztof Kozlowski wrote:
> User-space might be interested in receiving uevents when the charging
> starts/stops or if conditions of battery changes (e.g.
> over-temperature).  Notify about changes in battery also when the flags
> change, not only SoC.

This looks like a good idea.

> Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
> ---
>  drivers/power/supply/bq27xxx_battery.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c
> index 29b3a4056865..cb9306160c14 100644
> --- a/drivers/power/supply/bq27xxx_battery.c
> +++ b/drivers/power/supply/bq27xxx_battery.c
> @@ -1612,7 +1612,8 @@ void bq27xxx_battery_update(struct bq27xxx_device_info *di)
>  			di->charge_design_full = bq27xxx_battery_read_dcap(di);
>  	}
>  
> -	if (di->cache.capacity != cache.capacity)
> +	if ((di->cache.capacity != cache.capacity) || \
                                                      ^^
                                      You have there an extra backslash

> +	    (di->cache.flags != cache.flags))
>  		power_supply_changed(di->bat);
>  
>  	if (memcmp(&di->cache, &cache, sizeof(cache)) != 0)

-- 
Pali Rohár
pali.rohar@...il.com