From patchwork Sun Jun 4 15:22:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 689812 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2979FC7EE29 for ; Sun, 4 Jun 2023 15:24:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229886AbjFDPYg (ORCPT ); Sun, 4 Jun 2023 11:24:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39088 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229449AbjFDPYf (ORCPT ); Sun, 4 Jun 2023 11:24:35 -0400 Received: from cloudserver094114.home.pl (cloudserver094114.home.pl [79.96.170.134]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 63349CE; Sun, 4 Jun 2023 08:24:34 -0700 (PDT) Received: from localhost (127.0.0.1) (HELO v370.home.net.pl) by /usr/run/smtp (/usr/run/postfix/private/idea_relay_lmtp) via UNIX with SMTP (IdeaSmtpServer 5.2.0) id 4b94dd63f174b4c0; Sun, 4 Jun 2023 17:24:32 +0200 Received: from kreacher.localnet (unknown [195.136.19.94]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by v370.home.net.pl (Postfix) with ESMTPSA id 69A92961C82; Sun, 4 Jun 2023 17:24:32 +0200 (CEST) From: "Rafael J. Wysocki" To: Linux ACPI Cc: LKML , Michal Wilczynski , Josh Triplett , Hanjun Guo Subject: [RFT][PATCH v1 3/4] ACPI: tiny-power-button: Eliminate the driver notify callback Date: Sun, 04 Jun 2023 17:22:48 +0200 Message-ID: <5392458.Sb9uPGUboI@kreacher> In-Reply-To: <1847933.atdPhlSkOF@kreacher> References: <1847933.atdPhlSkOF@kreacher> MIME-Version: 1.0 X-CLIENT-IP: 195.136.19.94 X-CLIENT-HOSTNAME: 195.136.19.94 X-VADE-SPAMSTATE: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvhedrfeeljedgkeekucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecujffqoffgrffnpdggtffipffknecuuegrihhlohhuthemucduhedtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvfevufffkfgjfhgggfgtsehtufertddttdejnecuhfhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqnecuggftrfgrthhtvghrnhepvdffueeitdfgvddtudegueejtdffteetgeefkeffvdeftddttdeuhfegfedvjefhnecukfhppeduleehrddufeeirdduledrleegnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepudelhedrudefiedrudelrdelgedphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqedpnhgspghrtghpthhtohephedprhgtphhtthhopehlihhnuhigqdgrtghpihesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehmihgthhgrlhdrfihilhgtiiihnhhskhhisehinhhtvghlrdgtohhmpdhrtghpthhtohepjhhoshhhsehjohhshhhtrhhiphhlvghtthdrohhrghdprhgtphht thhopehguhhohhgrnhhjuhhnsehhuhgrfigvihdrtghomh X-DCC--Metrics: v370.home.net.pl 1024; Body=5 Fuz1=5 Fuz2=5 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org From: Rafael J. Wysocki Rework the ACPI tiny-power-button driver to install a notify handler or a fixed event handler for the device it binds to by itself and drop its notify callback. This will allow acpi_device_install_notify_handler() and acpi_device_remove_notify_handler() to be simplified going forward. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/tiny-power-button.c | 49 ++++++++++++++++++++++++++++++++------- 1 file changed, 41 insertions(+), 8 deletions(-) Index: linux-pm/drivers/acpi/tiny-power-button.c =================================================================== --- linux-pm.orig/drivers/acpi/tiny-power-button.c +++ linux-pm/drivers/acpi/tiny-power-button.c @@ -19,18 +19,52 @@ static const struct acpi_device_id tiny_ }; MODULE_DEVICE_TABLE(acpi, tiny_power_button_device_ids); -static int acpi_noop_add(struct acpi_device *device) +static void acpi_tiny_power_button_notify(acpi_handle handle, u32 event, void *data) { - return 0; + kill_cad_pid(power_signal, 1); } -static void acpi_noop_remove(struct acpi_device *device) +static void acpi_tiny_power_button_notify_run(void *not_used) { + acpi_tiny_power_button_notify(NULL, ACPI_FIXED_HARDWARE_EVENT, NULL); } -static void acpi_tiny_power_button_notify(struct acpi_device *device, u32 event) +static u32 acpi_tiny_power_button_event(void *not_used) { - kill_cad_pid(power_signal, 1); + acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_tiny_power_button_notify_run, NULL); + return ACPI_INTERRUPT_HANDLED; +} + +static int acpi_tiny_power_button_add(struct acpi_device *device) +{ + acpi_status status; + + if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON) { + status = acpi_install_fixed_event_handler(ACPI_EVENT_POWER_BUTTON, + acpi_tiny_power_button_event, + NULL); + } else { + status = acpi_install_notify_handler(device->handle, + ACPI_DEVICE_NOTIFY, + acpi_tiny_power_button_notify, + NULL); + } + if (ACPI_FAILURE(status)) + return -ENODEV; + + return 0; +} + +static void acpi_tiny_power_button_remove(struct acpi_device *device) +{ + if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON) { + acpi_remove_fixed_event_handler(ACPI_EVENT_POWER_BUTTON, + acpi_tiny_power_button_event); + } else { + acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, + acpi_tiny_power_button_notify); + } + acpi_os_wait_events_complete(); } static struct acpi_driver acpi_tiny_power_button_driver = { @@ -38,9 +72,8 @@ static struct acpi_driver acpi_tiny_powe .class = "tiny-power-button", .ids = tiny_power_button_device_ids, .ops = { - .add = acpi_noop_add, - .remove = acpi_noop_remove, - .notify = acpi_tiny_power_button_notify, + .add = acpi_tiny_power_button_add, + .remove = acpi_tiny_power_button_remove, }, };