From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 904B11AC893; Thu, 15 Aug 2024 14:38:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723732719; cv=none; b=A0FBh9zPJ43hwFIO/wu4qO3onf8/e8CXdFqfmDtUf9//ItqWgzjfNTqMvVa9vBGIvnQhopZOF3RFZ97CFW2Sl3a1F7VatjVXMvf8R77pNIJ9bm48cdtOw74i48Zcb1S9/VEeJPj5hrVMYQBqZq5ZB+VXJNVaWP4LX1CSc9EHAKI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723732719; c=relaxed/simple; bh=dWbHzC88zZWf4Vq+wu7JAGNBaFZ1qHv27+8ScWz9ehM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=f2kHeqmD0nhic2iWwrkw4bx3ye4YPuLnZHirCQ6MRleICzRC1bX3CpOViYgQJ7UwPvrl8qIVnLoJ8JvYNY4uZSe5r+vFjWLPBswgRgy7tzqFjqQN38i2+8g3yE3RqjQqJh5c+019GddyOStBYQ8i0+MANK9wcujxNJ9jbxlewsI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=zBMu+p+x; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="zBMu+p+x" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 04E92C32786; Thu, 15 Aug 2024 14:38:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1723732719; bh=dWbHzC88zZWf4Vq+wu7JAGNBaFZ1qHv27+8ScWz9ehM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=zBMu+p+xaf7MwQ0Jnjlxna+gnjlW4fdhQrc4vBf+5LmVfgPXXIh3EbsqYkIOi1Thp 2ToocOZE8IwDBIAPGNrkyIccknRM6G0Ocdovz1HmkRe7R4/FCBmXobQek7tVcU7tfN 1maIape0NI026ky+mNY66q39OWjJJG4q4bqqp7KM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= , "Rafael J. Wysocki" , Sasha Levin Subject: [PATCH 5.10 266/352] ACPI: SBS: manage alarm sysfs attribute through psy core Date: Thu, 15 Aug 2024 15:25:32 +0200 Message-ID: <20240815131929.724126807@linuxfoundation.org> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240815131919.196120297@linuxfoundation.org> References: <20240815131919.196120297@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 5.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Thomas Weißschuh [ Upstream commit 6bad28cfc30988a845fb3f59a99f4b8a4ce8fe95 ] Let the power supply core register the attribute. This ensures that the attribute is created before the device is announced to userspace, avoiding a race condition. Signed-off-by: Thomas Weißschuh Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- drivers/acpi/sbs.c | 23 ++++++++++++----------- 1 file changed, 12 insertions(+), 11 deletions(-) diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c index e6d9f4de28000..54396cb8930a4 100644 --- a/drivers/acpi/sbs.c +++ b/drivers/acpi/sbs.c @@ -77,7 +77,6 @@ struct acpi_battery { u16 spec; u8 id; u8 present:1; - u8 have_sysfs_alarm:1; }; #define to_acpi_battery(x) power_supply_get_drvdata(x) @@ -462,12 +461,18 @@ static ssize_t acpi_battery_alarm_store(struct device *dev, return count; } -static const struct device_attribute alarm_attr = { +static struct device_attribute alarm_attr = { .attr = {.name = "alarm", .mode = 0644}, .show = acpi_battery_alarm_show, .store = acpi_battery_alarm_store, }; +static struct attribute *acpi_battery_attrs[] = { + &alarm_attr.attr, + NULL +}; +ATTRIBUTE_GROUPS(acpi_battery); + /* -------------------------------------------------------------------------- Driver Interface -------------------------------------------------------------------------- */ @@ -509,7 +514,10 @@ static int acpi_battery_read(struct acpi_battery *battery) static int acpi_battery_add(struct acpi_sbs *sbs, int id) { struct acpi_battery *battery = &sbs->battery[id]; - struct power_supply_config psy_cfg = { .drv_data = battery, }; + struct power_supply_config psy_cfg = { + .drv_data = battery, + .attr_grp = acpi_battery_groups, + }; int result; battery->id = id; @@ -539,10 +547,6 @@ static int acpi_battery_add(struct acpi_sbs *sbs, int id) goto end; } - result = device_create_file(&battery->bat->dev, &alarm_attr); - if (result) - goto end; - battery->have_sysfs_alarm = 1; end: printk(KERN_INFO PREFIX "%s [%s]: Battery Slot [%s] (battery %s)\n", ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device), @@ -554,11 +558,8 @@ static void acpi_battery_remove(struct acpi_sbs *sbs, int id) { struct acpi_battery *battery = &sbs->battery[id]; - if (battery->bat) { - if (battery->have_sysfs_alarm) - device_remove_file(&battery->bat->dev, &alarm_attr); + if (battery->bat) power_supply_unregister(battery->bat); - } } static int acpi_charger_add(struct acpi_sbs *sbs) -- 2.43.0