From patchwork Wed Sep 4 19:25:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Patchwork-Id: 13791294 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A9AA21E7665; Wed, 4 Sep 2024 19:25:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725477957; cv=none; b=dPIwcCaN3e5hqLSoYBhxvWiDHS7PP06GyQ60eRsryWdwOw4sZ8hkHn6nKa6lUokuj6hvPB0OfOXI7dUo4ItJ5lX2crtXUfjJ4ReKGILBmxRH69ex6j2YX/+TWb7fuNVVO6sBUo/RsTPH5sHZ87TQT4c7ymOYsNTfu/oBCtZHeSQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725477957; c=relaxed/simple; bh=X7lrjE7x1vAygc53rzcx7av5ytjIigJ+NYfn3S4SJ4A=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=NvuewoTBHCbcym67NQVZp7H1LdMcM9GAczd7qXgpLVBUYt5AiKhfyF7vQr3FAYSis/gufm/TDglEaIdfvhffpgJPuapN3nYi8z02aRvkpS0mioZNHRNu/0TOJJLE+48rhBUBQJ4AdUvBDgl1UlkTQlNRtYyIX8h9lTAzDQm66W8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net; spf=pass smtp.mailfrom=weissschuh.net; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b=Jx/VexhN; arc=none smtp.client-ip=159.69.126.157 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b="Jx/VexhN" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1725477950; bh=X7lrjE7x1vAygc53rzcx7av5ytjIigJ+NYfn3S4SJ4A=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=Jx/VexhNKkiGnsolG8rjeSiBr7Irw/YxP8gy/7S/pgwWwny5e2IJ296vj8A/rERoU zPWlMMUZJn5HvxpoxIyczJx46Mx+Fm/GdqKlxAeNbqfL8TFPNLNLOgyewFl2YtsDXy GJrapuGVkR8nsTzh4MQ1EUwAMzSf+w8BgafNVYXg= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Wed, 04 Sep 2024 21:25:38 +0200 Subject: [PATCH RFC v3 5/9] power: supply: sysfs: rework uevent property loop Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240904-power-supply-extensions-v3-5-62efeb93f8ec@weissschuh.net> References: <20240904-power-supply-extensions-v3-0-62efeb93f8ec@weissschuh.net> In-Reply-To: <20240904-power-supply-extensions-v3-0-62efeb93f8ec@weissschuh.net> To: Sebastian Reichel , Armin Wolf , Hans de Goede Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?q?Thomas?= =?utf-8?q?_Wei=C3=9Fschuh?= X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1725477949; l=2599; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=X7lrjE7x1vAygc53rzcx7av5ytjIigJ+NYfn3S4SJ4A=; b=1vjSgYQ94s1oECkeX/DTp6kXRi0vegsS8A+3bSox8QyG7q4IaF/lpF7hURPFC3nBLw0Ur+J7R zd4tZe3Y7+6BNHlv0Pp71iL610FFS1nFBH1ULfOTpYmNT6sdr6Q6ObY X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= 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 Reviewed-by: Hans de Goede --- 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; }