From patchwork Wed Mar 10 13:24:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 397403 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 546F8C1551E for ; Wed, 10 Mar 2021 13:25:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 25AB96500C for ; Wed, 10 Mar 2021 13:25:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233383AbhCJNZb (ORCPT ); Wed, 10 Mar 2021 08:25:31 -0500 Received: from mail.kernel.org ([198.145.29.99]:46424 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233120AbhCJNY4 (ORCPT ); Wed, 10 Mar 2021 08:24:56 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 22D6B64FF7; Wed, 10 Mar 2021 13:24:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1615382696; bh=kmdz5iAEnrtsvLj+hKc5HQ3LxXB7RPoDFjo2ozU22to=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jRLJ71d/vjTR4gRwYisXKOOJGQO553q/V9AZNG7tp58mBkV86Qyd6EhIhXPpzQGrK WAqpHWTKg9jJPPU2Jr/A8uXxLkWTgEwL+OsSgpJT9rURCKYDBcaQzxDD9V36nzEUMr K+7vetBAKhrNVKT8jjAJgkM5C9aCO7lHQrftcBGE= From: gregkh@linuxfoundation.org To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Andy Shevchenko , Hans de Goede , Sasha Levin Subject: [PATCH 5.4 09/24] platform/x86: acer-wmi: Cleanup accelerometer device handling Date: Wed, 10 Mar 2021 14:24:21 +0100 Message-Id: <20210310132320.834384334@linuxfoundation.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210310132320.550932445@linuxfoundation.org> References: <20210310132320.550932445@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Greg Kroah-Hartman From: Hans de Goede [ Upstream commit 9feb0763e4985ccfae632de3bb2f029cc8389842 ] Cleanup accelerometer device handling: -Drop acer_wmi_accel_destroy instead directly call input_unregister_device. -The information tracked by the CAP_ACCEL flag mirrors acer_wmi_accel_dev being NULL. Drop the CAP flag, this is a preparation change for allowing users to override the capability flags. Dropping the flag stops users from causing a NULL pointer dereference by forcing the capability. Reviewed-by: Andy Shevchenko Signed-off-by: Hans de Goede Link: https://lore.kernel.org/r/20201019185628.264473-3-hdegoede@redhat.com Signed-off-by: Sasha Levin --- drivers/platform/x86/acer-wmi.c | 20 ++++++-------------- 1 file changed, 6 insertions(+), 14 deletions(-) diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c index daf692fe7f77..167d0446f560 100644 --- a/drivers/platform/x86/acer-wmi.c +++ b/drivers/platform/x86/acer-wmi.c @@ -211,7 +211,6 @@ struct hotkey_function_type_aa { #define ACER_CAP_BLUETOOTH BIT(2) #define ACER_CAP_BRIGHTNESS BIT(3) #define ACER_CAP_THREEG BIT(4) -#define ACER_CAP_ACCEL BIT(5) /* * Interface type flags @@ -1516,7 +1515,7 @@ static int acer_gsensor_event(void) struct acpi_buffer output; union acpi_object out_obj[5]; - if (!has_cap(ACER_CAP_ACCEL)) + if (!acer_wmi_accel_dev) return -1; output.length = sizeof(out_obj); @@ -1890,8 +1889,6 @@ static int __init acer_wmi_accel_setup(void) gsensor_handle = acpi_device_handle(adev); acpi_dev_put(adev); - interface->capability |= ACER_CAP_ACCEL; - acer_wmi_accel_dev = input_allocate_device(); if (!acer_wmi_accel_dev) return -ENOMEM; @@ -1917,11 +1914,6 @@ err_free_dev: return err; } -static void acer_wmi_accel_destroy(void) -{ - input_unregister_device(acer_wmi_accel_dev); -} - static int __init acer_wmi_input_setup(void) { acpi_status status; @@ -2076,7 +2068,7 @@ static int acer_resume(struct device *dev) if (has_cap(ACER_CAP_BRIGHTNESS)) set_u32(data->brightness, ACER_CAP_BRIGHTNESS); - if (has_cap(ACER_CAP_ACCEL)) + if (acer_wmi_accel_dev) acer_gsensor_init(); return 0; @@ -2266,8 +2258,8 @@ error_device_alloc: error_platform_register: if (wmi_has_guid(ACERWMID_EVENT_GUID)) acer_wmi_input_destroy(); - if (has_cap(ACER_CAP_ACCEL)) - acer_wmi_accel_destroy(); + if (acer_wmi_accel_dev) + input_unregister_device(acer_wmi_accel_dev); return err; } @@ -2277,8 +2269,8 @@ static void __exit acer_wmi_exit(void) if (wmi_has_guid(ACERWMID_EVENT_GUID)) acer_wmi_input_destroy(); - if (has_cap(ACER_CAP_ACCEL)) - acer_wmi_accel_destroy(); + if (acer_wmi_accel_dev) + input_unregister_device(acer_wmi_accel_dev); remove_debugfs(); platform_device_unregister(acer_platform_device);