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[2001:1c00:c32:7800:5bfa:a036:83f0:f9ec]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a8a62038d6fsm31568966b.61.2024.09.04.12.58.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 04 Sep 2024 12:58:59 -0700 (PDT) Message-ID: Date: Wed, 4 Sep 2024 21:58:59 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH RFC v3 5/9] power: supply: sysfs: rework uevent property loop To: =?UTF-8?Q?Thomas_Wei=C3=9Fschuh?= , Sebastian Reichel , Armin Wolf Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org References: <20240904-power-supply-extensions-v3-0-62efeb93f8ec@weissschuh.net> <20240904-power-supply-extensions-v3-5-62efeb93f8ec@weissschuh.net> Content-Language: en-US, nl From: Hans de Goede In-Reply-To: <20240904-power-supply-extensions-v3-5-62efeb93f8ec@weissschuh.net> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Hi, On 9/4/24 9:25 PM, Thomas Weißschuh wrote: > Instead of looping through all properties known to be supported by the > psy, loop over all known properties and decide based on the return value > of power_supply_get_property() whether the property existed. > > This makes the code shorter now and even more so when power supply > extensions are added. > It also simplifies the locking, as it can all happen inside > power_supply_get_property(). > > Signed-off-by: Thomas Weißschuh Thanks, patch looks good to me: Reviewed-by: Hans de Goede Regards, Hans p.s. Last review for me in this set. I'm afraid I don't have the bandwidth atm to also review the actual extension API. > --- > drivers/power/supply/power_supply_sysfs.c | 26 +++++--------------------- > 1 file changed, 5 insertions(+), 21 deletions(-) > > diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c > index 4ab08386bcb7..915a4ba62258 100644 > --- a/drivers/power/supply/power_supply_sysfs.c > +++ b/drivers/power/supply/power_supply_sysfs.c > @@ -290,6 +290,8 @@ static ssize_t power_supply_show_property(struct device *dev, > dev_dbg_ratelimited(dev, > "driver has no data for `%s' property\n", > attr->attr.name); > + else if (ret == -EINVAL) /* property is not supported */ > + return -ENODATA; > else if (ret != -ENODEV && ret != -EAGAIN) > dev_err_ratelimited(dev, > "driver failed to report `%s' property: %zd\n", > @@ -451,11 +453,7 @@ static int add_prop_uevent(const struct device *dev, struct kobj_uevent_env *env > > int power_supply_uevent(const struct device *dev, struct kobj_uevent_env *env) > { > - const struct power_supply *psy = dev_get_drvdata(dev); > - const enum power_supply_property *battery_props = > - power_supply_battery_info_properties; > - unsigned long psy_drv_properties[POWER_SUPPLY_ATTR_CNT / > - sizeof(unsigned long) + 1] = {0}; > + struct power_supply *psy = dev_get_drvdata(dev); > int ret = 0, j; > char *prop_buf; > > @@ -483,22 +481,8 @@ int power_supply_uevent(const struct device *dev, struct kobj_uevent_env *env) > if (ret) > goto out; > > - for (j = 0; j < psy->desc->num_properties; j++) { > - set_bit(psy->desc->properties[j], psy_drv_properties); > - ret = add_prop_uevent(dev, env, psy->desc->properties[j], > - prop_buf); > - if (ret) > - goto out; > - } > - > - for (j = 0; j < power_supply_battery_info_properties_size; j++) { > - if (test_bit(battery_props[j], psy_drv_properties)) > - continue; > - if (!power_supply_battery_info_has_prop(psy->battery_info, > - battery_props[j])) > - continue; > - ret = add_prop_uevent(dev, env, battery_props[j], > - prop_buf); > + for (j = 0; j < POWER_SUPPLY_ATTR_CNT; j++) { > + ret = add_prop_uevent(dev, env, j, prop_buf); > if (ret) > goto out; > } >