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 70E351AC8BB; Thu, 15 Aug 2024 14:00:14 +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=1723730414; cv=none; b=b3mvDWHUlU72PbsLMZRtMBZDBDjBfXEowFLIVjWTUxnSMxyDrHq6KKial1yrEtwamA38Z80Dw4sOmj9O+2ukq7FFxODQKCxNbFosInBysuuQ3UQIFsZ8Q7znhgm6KZNZjj3+MvUUCoTdGULXDRNiCZW+P3vMyLftb7FCqFL/Ro4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723730414; c=relaxed/simple; bh=QemSNOpTZJjyRE2bWHymkBisLeZmQNbaYthD9gjoaEs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=uWvdNWloS4l5WSYWAAb/cBhH2JwmF01gvNfx1Ehvx3RuRESrsT3GCFVxah//DPGFIWXO+BZ4Vlc7O4TCfPtnyL+mFUW9FRFZ5kxDUl4gGxvZIli0sGzr6n0yX2NCDp2gZj1G7mSl69s9t+FQZe6pYJILWWazP3UTcaerOCsxmJo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ndKAcx1f; 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="ndKAcx1f" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A0C04C4AF0D; Thu, 15 Aug 2024 14:00:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1723730414; bh=QemSNOpTZJjyRE2bWHymkBisLeZmQNbaYthD9gjoaEs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ndKAcx1faOoVoW5cdc1N/xrrpQ5AGk3gjPjYm+YE2cFgNSkuuY4YO+GI85WRjtPwn LC0p9AbrhkSVQ6nYeLvMgg/G4Xj5E1g/6ZcaFRiKTR2IBu/lknkPoEYYKTBhPV6k4T JRKTRJosFkkogEGlx/RHvxvJXa8S1iIWJpYV2frk= 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 5.15 371/484] ACPI: battery: create alarm sysfs attribute atomically Date: Thu, 15 Aug 2024 15:23:49 +0200 Message-ID: <20240815131955.769601637@linuxfoundation.org> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240815131941.255804951@linuxfoundation.org> References: <20240815131941.255804951@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 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Thomas Weißschuh [ Upstream commit a231eed10ed5a290129fda36ad7bcc263c53ff7d ] Let the power supply core register the attribute. This ensures that the attribute is created before the device is announced to userspace, avoid a race condition. Signed-off-by: Thomas Weißschuh Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- drivers/acpi/battery.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index c7569151fd02a..aed4132985a96 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -676,12 +676,18 @@ 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); + /* * The Battery Hooking API * @@ -818,7 +824,10 @@ static void __exit battery_hook_exit(void) static int sysfs_add_battery(struct acpi_battery *battery) { - struct power_supply_config psy_cfg = { .drv_data = battery, }; + struct power_supply_config psy_cfg = { + .drv_data = battery, + .attr_grp = acpi_battery_groups, + }; bool full_cap_broken = false; if (!ACPI_BATTERY_CAPACITY_VALID(battery->full_charge_capacity) && @@ -863,7 +872,7 @@ static int sysfs_add_battery(struct acpi_battery *battery) return result; } battery_hook_add_battery(battery); - return device_create_file(&battery->bat->dev, &alarm_attr); + return 0; } static void sysfs_remove_battery(struct acpi_battery *battery) @@ -874,7 +883,6 @@ static void sysfs_remove_battery(struct acpi_battery *battery) return; } battery_hook_remove_battery(battery); - device_remove_file(&battery->bat->dev, &alarm_attr); power_supply_unregister(battery->bat); battery->bat = NULL; mutex_unlock(&battery->sysfs_lock); -- 2.43.0